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中国科学院昆明植物研究所知识管理系统
Knowledge Management System of Kunming Institute of Botany,CAS
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李德铢 [58]
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0.05) between wild (AR = 4.651), semi-cultivated (AR = 5.091) and cultivated (AR = 5.132) populations of C. taliensis, which suggested that the genetic background of long-lived woody plant was not easy to be changed, and there were moderate high gene flow between populations. However, there was a significant difference (P < 0.05) between wild (AR = 5.9) and cultivated (AR = 7.1) populations distributed in the same place in Yun county, Yunnan province, which may result from the hybridization and introgression of species in the tea garden and anthropogenic damages to the wild population. The hypothesis of hybrid origin of C. grandibracteata was tested by morphological and microsatellites analyses. Compared with other species, the locules in ovary of C. grandibracteata are variable, which showed a morphological intermediate and mosaic. Except one private allele, Ninety-nine percent alleles of C. grandibracteata were shared with these of C. taliensis and C. sinensis var. assamica. And C. grandibracteata was nested in the cluster of C. taliensis in the UPGMA tree. Conclusively, our results supported the hypothesis of hybrid origin of C. grandibracteata partly. The speciation of C. grandibracteata was derived from hybridization and asymmetrical introgression potentially. It is possible that C. taliensis was one of its parents, but it still needs more evidences to prove that C. sinensis var. assamica was another parent.","jscount":"1","jsurl":"/simple-search?field1=all&rpp=10&accurate=false&advanced=false&sort_by=2&isNonaffiliated=false&search_type=-1&query1=Chromosome%2BNumber&order=desc&&fq=dc.project.title_filter%3ACamellia%5C+taliensis%5C+%5C%28W.%5C+W.%5C+Smith%5C%29%5C+Melchior%2C%5C+a%5C+member%5C+of%5C+Camellia%5C+sect.%5C+Thea%2C%5C+is%5C+an%5C+indigenous%5C+species%5C+in%5C+local%5C+natural%5C+forest%5C+and%5C+has%5C+a%5C+long%5C+cultivative%5C+history%5C+in%5C+western%5C+Yunnan%5C+and%5C+its%5C+neighborhood%2C%5C+where%5C+the%5C+domestications%5C+of%5C+this%5C+species%5C+in%5C+different%5C+historical%5C+periods%5C+and%5C+in%5C+different%5C+ways%5C+can%5C+be%5C+found.%5C+C.%5C+taliensis%5C+is%5C+an%5C+important%5C+contributor%5C+to%5C+the%5C+formations%5C+of%5C+tea%5C+landraces%5C+by%5C+hybridization%5C+and%5C+introgression.%5C+In%5C+the%5C+present%5C+study%2C%5C+14%5C+microsatellite%5C+loci%5C+screened%5C+from%5C+37%5C+loci%5C+were%5C+used%5C+to%5C+explore%5C+the%5C+genetic%5C+diversity%5C+about%5C+this%5C+species%5C+with%5C+579%5C+samples%5C+from%5C+25%5C+populations%5C+%5C%2816%5C+wild%5C+populations%2C%5C+4%5C+semi%5C-cultivated%5C+populations%5C+and%5C+5%5C+cultivated%5C+populations%5C%29.%5C+At%5C+the%5C+same%5C+time%2C%5C+the%5C+potential%5C+hybrid%5C+speciation%5C+of%5C+C.%5C+grandibracteata%2C%5C+was%5C+investigated%5C+using%5C+39%5C+individuals%5C+from%5C+2%5C+populations%2C%5C+along%5C+with%5C+C.%5C+taliensis%5C+and%5C+C.%5C+sinensis%5C+var.%5C+assamica%5C+%5C%2883%5C+individuals%5C+from%5C+4%5C+populations%5C%29%5C+by%5C+the%5C+same%5C+microsatellite%5C+markers.%5C+C.%5C+taliensis%5C+had%5C+a%5C+moderate%5C+high%5C+level%5C+of%5C+genetic%5C+diversity%5C+%5C%28A%5C+%3D%5C+14.3%2C%5C+Ne%3D%5C+5.7%2C%5C+HE%5C+%3D%5C+0.666%2C%5C+I%5C+%3D%5C+1.753%2C%5C+AR%5C+%3D%5C+7.2%2C%5C+PPB%5C+%3D%5C+100%25%5C%29.%5C+This%5C+may%5C+result%5C+from%5C+several%5C+factors%5C+including%5C+K%5C-strategy%2C%5C+genetic%5C+background%2C%5C+gene%5C+flow%5C+between%5C+populations%2C%5C+hybridization%5C+and%5C+introgression%5C+among%5C+species.%5C+Between%5C+wild%5C+populations%5C+of%5C+C.%5C+taliensis%2C%5C+the%5C+gene%5C+flow%5C+was%5C+moderate%5C+high%5C+%5C%28Nm%5C+%3D%5C+1.197%5C%29%2C%5C+and%5C+genetic%5C+variation%5C+was%5C+less%5C+than%5C+20%25%5C+%5C%28GST%5C+%3D%5C+0.147%2C%5C+FST%5C+%3D%5C+0.173%5C%29%2C%5C+which%5C+was%5C+similar%5C+to%5C+other%5C+research%5C+results%5C+of%5C+long%5C-lived%5C+woody%5C+plants%2C%5C+and%5C+reflected%5C+the%5C+genetic%5C+structure%5C+of%5C+its%5C+ancestry%5C+to%5C+same%5C+extent.%5C+There%5C+was%5C+a%5C+high%5C+significant%5C+correlation%5C+between%5C+geographic%5C+distance%5C+and%5C+Nei%E2%80%99s%5C+genetic%5C+distance%5C+%5C%28r%5C+%3D%5C+0.372%2C%5C+P%5C+%3D%5C+0.001%5C%29%5C+of%5C+populations%2C%5C+which%5C+accorded%5C+with%5C+isolation%5C+by%5C+distance%5C+model.%5C+Inferring%5C+from%5C+Bayesian%5C+clustering%5C+of%5C+genotypes%2C%5C+all%5C+individuals%5C+of%5C+C.%5C+taliensis%5C+were%5C+divided%5C+into%5C+two%5C+groups%2C%5C+conflicting%5C+with%5C+the%5C+result%5C+based%5C+on%5C+Nei%E2%80%99s%5C+genetic%5C+distance%5C+and%5C+real%5C+geographic%5C+distribution%2C%5C+which%5C+suggested%5C+there%5C+were%5C+heavy%5C+and%5C+non%5C-random%5C+influences%5C+by%5C+human%5C+practices.%5C+According%5C+to%5C+allelic%5C+richness%2C%5C+there%5C+were%5C+no%5C+significant%5C+differences%5C+%5C%28P%5C+%3E%5C+0.05%5C%29%5C+between%5C+wild%5C+%5C%28AR%5C+%3D%5C+4.651%5C%29%2C%5C+semi%5C-cultivated%5C+%5C%28AR%5C+%3D%5C+5.091%5C%29%5C+and%5C+cultivated%5C+%5C%28AR%5C+%3D%5C+5.132%5C%29%5C+populations%5C+of%5C+C.%5C+taliensis%2C%5C+which%5C+suggested%5C+that%5C+the%5C+genetic%5C+background%5C+of%5C+long%5C-lived%5C+woody%5C+plant%5C+was%5C+not%5C+easy%5C+to%5C+be%5C+changed%2C%5C+and%5C+there%5C+were%5C+moderate%5C+high%5C+gene%5C+flow%5C+between%5C+populations.%5C+However%2C%5C+there%5C+was%5C+a%5C+significant%5C+difference%5C+%5C%28P%5C+%3C%5C+0.05%5C%29%5C+between%5C+wild%5C+%5C%28AR%5C+%3D%5C+5.9%5C%29%5C+and%5C+cultivated%5C+%5C%28AR%5C+%3D%5C+7.1%5C%29%5C+populations%5C+distributed%5C+in%5C+the%5C+same%5C+place%5C+in%5C+Yun%5C+county%2C%5C+Yunnan%5C+province%2C%5C+which%5C+may%5C+result%5C+from%5C+the%5C+hybridization%5C+and%5C+introgression%5C+of%5C+species%5C+in%5C+the%5C+tea%5C+garden%5C+and%5C+anthropogenic%5C+damages%5C+to%5C+the%5C+wild%5C+population.%5C+The%5C+hypothesis%5C+of%5C+hybrid%5C+origin%5C+of%5C+C.%5C+grandibracteata%5C+was%5C+tested%5C+by%5C+morphological%5C+and%5C+microsatellites%5C+analyses.%5C+Compared%5C+with%5C+other%5C+species%2C%5C+the%5C+locules%5C+in%5C+ovary%5C+of%5C+C.%5C+grandibracteata%5C+are%5C+variable%2C%5C+which%5C+showed%5C+a%5C+morphological%5C+intermediate%5C+and%5C+mosaic.%5C+Except%5C+one%5C+private%5C+allele%2C%5C+Ninety%5C-nine%5C+percent%5C+alleles%5C+of%5C+C.%5C+grandibracteata%5C+were%5C+shared%5C+with%5C+these%5C+of%5C+C.%5C+taliensis%5C+and%5C+C.%5C+sinensis%5C+var.%5C+assamica.%5C+And%5C+C.%5C+grandibracteata%5C+was%5C+nested%5C+in%5C+the%5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Scholarship Council","jscount":"1","jsurl":"/simple-search?field1=all&rpp=10&accurate=false&advanced=false&sort_by=2&isNonaffiliated=false&search_type=-1&query1=Chromosome%2BNumber&order=desc&&fq=dc.project.title_filter%3AChina%5C+Scholarship%5C+Council"},{"jsname":"Cold stress is one of the major environmental factors that adversely influence plants growth. Cold stress not only limits plants geographic distribution, but also reduces plants yield by shortening growing season, which brought billions of dollars economic losses for global crop. In nature, responses of overwintering plants to low temperature can be divided into three distinct phases: cold acclimation (CA), freezing, and post-freezing recovery (PFR). Until now, plenty intensive study about molecular mechanism of cold stress mainly focused on the above-zero low temperature phase. However, the studies on the freezing phase below zero and the following PFR phase with temperature going up to above-zero were rare. The previous research form our lab hinted that the responses of plants to freezing and PFR were complex and important. Except for passive reflection, there were also crucial active responses during this process. Several special rules were presented at the different levels including gene expression, signal transduction and membrane lipids changes, and fully understanding these rules would be helpful for us to explore the responses of plants to low temperature and then proceed to improve the freezing resistance of plants. In the present study, the mechanisms of respond to freezing and PFR of model plant Arabidopsis thaliana and its close relative Thellungiella halophlia that with extreme tolerance to abiotic stresses were carried out, including regulation of gene expression, signal transduction pathway and membrane lipids changes three levels which were essential for the freezing resistance of plants. Ground on these work, we obtained results from the following five aspects. First, the complete picture of A. thaliana responding to freezing and PFR at transcriptome level was elaborated and three functional genes closely related to the phases were identified. Second, the cis-elements with high frequent presence in differentially expressed genes were elucidated, and the practical binding of one elements among them was experimental verified during freezing and PFR. Moreover, we predicted the new elements which would respond to freezing and PFR. Third, the regulation of freezing stress by microRNA in A. thaliana was preliminarily investigated and 36 functional genes possibly regulated by miRNA during freezing and PFR were gained. Fourth, the negative effect of phytohormone Auxin on A. thaliana subjected to freezing stress was identified. Fifth, for the freezing-resistant plant T. halophlia, the rules of membrane lipids composition changes under freezing stress were uncovered.","jscount":"1","jsurl":"/simple-search?field1=all&rpp=10&accurate=false&advanced=false&sort_by=2&isNonaffiliated=false&search_type=-1&query1=Chromosome%2BNumber&order=desc&&fq=dc.project.title_filter%3ACold%5C+stress%5C+is%5C+one%5C+of%5C+the%5C+major%5C+environmental%5C+factors%5C+that%5C+adversely%5C+influence%5C+plants%5C+growth.%5C+Cold%5C+stress%5C+not%5C+only%5C+limits%5C+plants%5C+geographic%5C+distribution%2C%5C+but%5C+also%5C+reduces%5C+plants%5C+yield%5C+by%5C+shortening%5C+growing%5C+season%2C%5C+which%5C+brought%5C+billions%5C+of%5C+dollars%5C+economic%5C+losses%5C+for%5C+global%5C+crop.%5C+In%5C+nature%2C%5C+responses%5C+of%5C+overwintering%5C+plants%5C+to%5C+low%5C+temperature%5C+can%5C+be%5C+divided%5C+into%5C+three%5C+distinct%5C+phases%5C%3A%5C+cold%5C+acclimation%5C+%5C%28CA%5C%29%2C%5C+freezing%2C%5C+and%5C+post%5C-freezing%5C+recovery%5C+%5C%28PFR%5C%29.%5C+Until%5C+now%2C%5C+plenty%5C+intensive%5C+study%5C+about%5C+molecular%5C+mechanism%5C+of%5C+cold%5C+stress%5C+mainly%5C+focused%5C+on%5C+the%5C+above%5C-zero%5C+low%5C+temperature%5C+phase.%5C+However%2C%5C+the%5C+studies%5C+on%5C+the%5C+freezing%5C+phase%5C+below%5C+zero%5C+and%5C+the%5C+following%5C+PFR%5C+phase%5C+with%5C+temperature%5C+going%5C+up%5C+to%5C+above%5C-zero%5C+were%5C+rare.%5C+The%5C+previous%5C+research%5C+form%5C+our%5C+lab%5C+hinted%5C+that%5C+the%5C+responses%5C+of%5C+plants%5C+to%5C+freezing%5C+and%5C+PFR%5C+were%5C+complex%5C+and%5C+important.%5C+Except%5C+for%5C+passive%5C+reflection%2C%5C+there%5C+were%5C+also%5C+crucial%5C+active%5C+responses%5C+during%5C+this%5C+process.%5C+Several%5C+special%5C+rules%5C+were%5C+presented%5C+at%5C+the%5C+different%5C+levels%5C+including%5C+gene%5C+expression%2C%5C+signal%5C+transduction%5C+and%5C+membrane%5C+lipids%5C+changes%2C%5C+and%5C+fully%5C+understanding%5C+these%5C+rules%5C+would%5C+be%5C+helpful%5C+for%5C+us%5C+to%5C+explore%5C+the%5C+responses%5C+of%5C+plants%5C+to%5C+low%5C+temperature%5C+and%5C+then%5C+proceed%5C+to%5C+improve%5C+the%5C+freezing%5C+resistance%5C+of%5C+plants.%5C+In%5C+the%5C+present%5C+study%2C%5C+the%5C+mechanisms%5C+of%5C+respond%5C+to%5C+freezing%5C+and%5C+PFR%5C+of%5C+model%5C+plant%5C+Arabidopsis%5C+thaliana%5C+and%5C+its%5C+close%5C+relative%5C+Thellungiella%5C+halophlia%5C+that%5C+with%5C+extreme%5C+tolerance%5C+to%5C+abiotic%5C+stresses%5C+were%5C+carried%5C+out%2C%5C+including%5C+regulation%5C+of%5C+gene%5C+expression%2C%5C+signal%5C+transduction%5C+pathway%5C+and%5C+membrane%5C+lipids%5C+changes%5C+three%5C+levels%5C+which%5C+were%5C+essential%5C+for%5C+the%5C+freezing%5C+resistance%5C+of%5C+plants.%5C+Ground%5C+on%5C+these%5C+work%2C%5C+we%5C+obtained%5C+results%5C+from%5C+the%5C+following%5C+five%5C+aspects.%5C+First%2C%5C+the%5C+complete%5C+picture%5C+of%5C+A.%5C+thaliana%5C+responding%5C+to%5C+freezing%5C+and%5C+PFR%5C+at%5C+transcriptome%5C+level%5C+was%5C+elaborated%5C+and%5C+three%5C+functional%5C+genes%5C+closely%5C+related%5C+to%5C+the%5C+phases%5C+were%5C+identified.%5C+Second%2C%5C+the%5C+cis%5C-elements%5C+with%5C+high%5C+frequent%5C+presence%5C+in%5C+differentially%5C+expressed%5C+genes%5C+were%5C+elucidated%2C%5C+and%5C+the%5C+practical%5C+binding%5C+of%5C+one%5C+elements%5C+among%5C+them%5C+was%5C+experimental%5C+verified%5C+during%5C+freezing%5C+and%5C+PFR.%5C+Moreover%2C%5C+we%5C+predicted%5C+the%5C+new%5C+elements%5C+which%5C+would%5C+respond%5C+to%5C+freezing%5C+and%5C+PFR.%5C+Third%2C%5C+the%5C+regulation%5C+of%5C+freezing%5C+stress%5C+by%5C+microRNA%5C+in%5C+A.%5C+thaliana%5C+was%5C+preliminarily%5C+investigated%5C+and%5C+36%5C+functional%5C+genes%5C+possibly%5C+regulated%5C+by%5C+miRNA%5C+during%5C+freezing%5C+and%5C+PFR%5C+were%5C+gained.%5C+Fourth%2C%5C+the%5C+negative%5C+effect%5C+of%5C+phytohormone%5C+Auxin%5C+on%5C+A.%5C+thaliana%5C+subjected%5C+to%5C+freezing%5C+stress%5C+was%5C+identified.%5C+Fifth%2C%5C+for%5C+the%5C+freezing%5C-resistant%5C+plant%5C+T.%5C+halophlia%2C%5C+the%5C+rules%5C+of%5C+membrane%5C+lipids%5C+composition%5C+changes%5C+under%5C+freezing%5C+stress%5C+were%5C+uncovered."},{"jsname":"Construction Program of Biology First-class Discipline in Guizhou[CINYL [2017] 009]","jscount":"1","jsurl":"/simple-search?field1=all&rpp=10&accurate=false&advanced=false&sort_by=2&isNonaffiliated=false&search_type=-1&query1=Chromosome%2BNumber&order=desc&&fq=dc.project.title_filter%3AConstruction%5C+Program%5C+of%5C+Biology%5C+First%5C-class%5C+Discipline%5C+in%5C+Guizhou%5C%5BCINYL%5C+%5C%5B2017%5C%5D%5C+009%5C%5D"},{"jsname":"Cyatheaceae species, usually called tree ferns, are considered as relicts of a time when dinosaurs were common. In recent several decades, the number of Cyatheaceae plants decreases dramatically. In order to find the reasons and provide directions for protecting these endangered plants, the biological characteristics of Cyatheaceae were surveyed. Using AFLP and cpDNA sequence variations, the genetic diversity and phylogeography of Sphaeropteris brunoniana were also analyzed. Based on these findings, implications for conservation strategies were discussed for this relict tree fern. Main results of the dissertation were summarized as follows, (1) Cyatheaceae plants have extensive distribution in Yunnan, China, and most of them distribute in southeast of Yunnan. In southeast, they usually inhabit margins of evergreen broad-leaved forests or secondary coniferous forests; however, the population update is very different and the age structure is unscientific. The spore of Cyatheaceae is trilete, radially symmetrical, and perinous. The spores of Alsophila species feature a ridged perine and a granular, verrucate or smooth exine. The spores of S. brunoniana are characterized by an incipient granular outermost layer and a verrucate exine. The metaphase chromosome numbers of gametophytes in the three examined species, viz. A. podophylla, A. gigantea and A. austro-yunnanensis, are 69, indicating that they are diploid and do not display variety in chromosome number. The chemical constituents of S. brunoniana are main simple and familiar compounds, such as saccharides, fatty acids and alcohols, and stigmasterols. (2) An unexpectedly high level of nDNA genetic diversity and low cpDNA diversity were detected in S. brunoniana. (3) This study showed that the genetic differentiation among populations within regions was low and between regions was significant. (4) There were several refugia of S. brunoniana in Yunnan during glacial periods. The Hainan populations were likely new colonizations and originated from Southeast Asia. (5) To retain existing genetic diversity, whether in situ or ex situ conservation or collection of germplasm is used, the populations of the two regions should be considered equally. Furthermore, ex situ conservation of this species should be preferably conducted on large populations.","jscount":"1","jsurl":"/simple-search?field1=all&rpp=10&accurate=false&advanced=false&sort_by=2&isNonaffiliated=false&search_type=-1&query1=Chromosome%2BNumber&order=desc&&fq=dc.project.title_filter%3ACyatheaceae%5C+species%2C%5C+usually%5C+called%5C+tree%5C+ferns%2C%5C+are%5C+considered%5C+as%5C+relicts%5C+of%5C+a%5C+time%5C+when%5C+dinosaurs%5C+were%5C+common.%5C+In%5C+recent%5C+several%5C+decades%2C%5C+the%5C+number%5C+of%5C+Cyatheaceae%5C+plants%5C+decreases%5C+dramatically.%5C+In%5C+order%5C+to%5C+find%5C+the%5C+reasons%5C+and%5C+provide%5C+directions%5C+for%5C+protecting%5C+these%5C+endangered%5C+plants%2C%5C+the%5C+biological%5C+characteristics%5C+of%5C+Cyatheaceae%5C+were%5C+surveyed.%5C+Using%5C+AFLP%5C+and%5C+cpDNA%5C+sequence%5C+variations%2C%5C+the%5C+genetic%5C+diversity%5C+and%5C+phylogeography%5C+of%5C+Sphaeropteris%5C+brunoniana%5C+were%5C+also%5C+analyzed.%5C+Based%5C+on%5C+these%5C+findings%2C%5C+implications%5C+for%5C+conservation%5C+strategies%5C+were%5C+discussed%5C+for%5C+this%5C+relict%5C+tree%5C+fern.%5C+Main%5C+results%5C+of%5C+the%5C+dissertation%5C+were%5C+summarized%5C+as%5C+follows%2C%5C+%5C%281%5C%29%5C+Cyatheaceae%5C+plants%5C+have%5C+extensive%5C+distribution%5C+in%5C+Yunnan%2C%5C+China%2C%5C+and%5C+most%5C+of%5C+them%5C+distribute%5C+in%5C+southeast%5C+of%5C+Yunnan.%5C+In%5C+southeast%2C%5C+they%5C+usually%5C+inhabit%5C+margins%5C+of%5C+evergreen%5C+broad%5C-leaved%5C+forests%5C+or%5C+secondary%5C+coniferous%5C+forests%5C%3B%5C+however%2C%5C+the%5C+population%5C+update%5C+is%5C+very%5C+different%5C+and%5C+the%5C+age%5C+structure%5C+is%5C+unscientific.%5C+The%5C+spore%5C+of%5C+Cyatheaceae%5C+is%5C+trilete%2C%5C+radially%5C+symmetrical%2C%5C+and%5C+perinous.%5C+The%5C+spores%5C+of%5C+Alsophila%5C+species%5C+feature%5C+a%5C+ridged%5C+perine%5C+and%5C+a%5C+granular%2C%5C+verrucate%5C+or%5C+smooth%5C+exine.%5C+The%5C+spores%5C+of%5C+S.%5C+brunoniana%5C+are%5C+characterized%5C+by%5C+an%5C+incipient%5C+granular%5C+outermost%5C+layer%5C+and%5C+a%5C+verrucate%5C+exine.%5C+The%5C+metaphase%5C+chromosome%5C+numbers%5C+of%5C+gametophytes%5C+in%5C+the%5C+three%5C+examined%5C+species%2C%5C+viz.%5C+A.%5C+podophylla%2C%5C+A.%5C+gigantea%5C+and%5C+A.%5C+austro%5C-yunnanensis%2C%5C+are%5C+69%2C%5C+indicating%5C+that%5C+they%5C+are%5C+diploid%5C+and%5C+do%5C+not%5C+display%5C+variety%5C+in%5C+chromosome%5C+number.%5C+The%5C+chemical%5C+constituents%5C+of%5C+S.%5C+brunoniana%5C+are%5C+main%5C+simple%5C+and%5C+familiar%5C+compounds%2C%5C+such%5C+as%5C+saccharides%2C%5C+fatty%5C+acids%5C+and%5C+alcohols%2C%5C+and%5C+stigmasterols.%5C+%5C%282%5C%29%5C+An%5C+unexpectedly%5C+high%5C+level%5C+of%5C+nDNA%5C+genetic%5C+diversity%5C+and%5C+low%5C+cpDNA%5C+diversity%5C+were%5C+detected%5C+in%5C+S.%5C+brunoniana.%5C+%5C%283%5C%29%5C+This%5C+study%5C+showed%5C+that%5C+the%5C+genetic%5C+differentiation%5C+among%5C+populations%5C+within%5C+regions%5C+was%5C+low%5C+and%5C+between%5C+regions%5C+was%5C+significant.%5C+%5C%284%5C%29%5C+There%5C+were%5C+several%5C+refugia%5C+of%5C+S.%5C+brunoniana%5C+in%5C+Yunnan%5C+during%5C+glacial%5C+periods.%5C+The%5C+Hainan%5C+populations%5C+were%5C+likely%5C+new%5C+colonizations%5C+and%5C+originated%5C+from%5C+Southeast%5C+Asia.%5C+%5C%285%5C%29%5C+To%5C+retain%5C+existing%5C+genetic%5C+diversity%2C%5C+whether%5C+in%5C+situ%5C+or%5C+ex%5C+situ%5C+conservation%5C+or%5C+collection%5C+of%5C+germplasm%5C+is%5C+used%2C%5C+the%5C+populations%5C+of%5C+the%5C+two%5C+regions%5C+should%5C+be%5C+considered%5C+equally.%5C+Furthermore%2C%5C+ex%5C+situ%5C+conservation%5C+of%5C+this%5C+species%5C+should%5C+be%5C+preferably%5C+conducted%5C+on%5C+large%5C+populations."},{"jsname":"Cytology study can reveal important biological features of plants and answers to a certain degree in phylogeny and distribution of genetic materials and so forth. By hard working of cytologists, chromosome data of plants have been increased to a great abundance, but yet disorderly distributed in different magazines, which made researches based on the whole chromosome data of one taxon rarely launched. Scientific databases have become increasingly indispensable as researching data growing daily. As Cytological studies are booming in China, in order to fill the absence of digital and statistical data of plant chromosome researches and chromosome atlas, we started to develop a Chinese Seed Plants Chromosome Database, aiming to construct a database and start to record published chromosome data of Chinese seed plants. Based on this database, we chose the part of gymnosperms and gave a discussion to the features of its chromosomes’ evolution and variation. Cytological experiments have been applied to some important phyto-groups for phylogeny research and germplasm identification.Part I: The Chinese Seed Plants Chromosome Database and Discussion on the features of Gymnosperms chromosomes，1 The Chinese Seed Plants Chromosome Database，The frame of database was constructed by Microsoft Access 2003. 19 items of data were included in, they are: Chinese and Latin names of family, genus and species; plant pictures, mitosis metaphase and karyotype figures; morphological characteristics and distributions of the plant; chromosome numbers and basic numbers; karyotype formula; karyotype description; origin of the plant material; literature and the source of photos. In this database, data can be checked and shared easily by extracted out in species sorted interface or family sorted interface. 120 species in 29 genera and 10 families of Gymnospers have been collected and input to the database. In Angiosperms, 61 species in 10 genera of family Magnoliaceae and 80 species in 3 genera of family Theaceae have been collected and input to the database.2 Discussion on the features of evolution and variation of Gymnosperms chromosomes，By data collection of the database, we analyzed chromosome features of the group Gymnosperm. Plants of Gymnosperm had been through a long historical evolution on earth, fossil records of which originated from the late Devonian period. Once an authoritative and major classification level in the plant kingdom, most Gymnosperms have been extinct unless conifers, cycads, Ginkgo and Getales. Three main features of Gymnosperm chromosomes are: relatively large chromosome, which can be recognized from figures in the database; constant chromosome numbers, in most families of Gymnosperm the basic chromosome number keeps a certain value; comparatively low variation, karyotype under family level differs a little. The variation of chromosomes in Gymnosperm is dominated by Robertsonian changes. Contrary to common variation type in Angiosperms, the variation from high unsymmetric karyotype to low unsymmetric karyotype was found in existence in Gymnosperm.Part II: cytology research on some important phyto-groups，3 Karyomorphology of three species in the order Huerteales and their phylogenetic implications，The karyomorphology of three species in Dipentodon (Dipentodontaceae), Perrottetia (Celastraceae), and Tapiscia (Tapisciaceae), namely Dipentodon sinicus, Perrottetia racemosa, and Tapiscia sinensis, was investigated in the study. Recent molecular research has discovered close relationships among these three genera, which has led to the establishment of the order Huerteales with Perrottetia being placed in Dipentodontaceae. Herein we report the chromosome numbers of D. sinicus and P. racemosa for the first time, and present their karyotype formulas as 2n = 34 = 22sm + 12st (D. sinicus), 2n = 20 = 11m + 9sm (P. racemosa), and 2n = 30 = 22m(2SAT) + 8sm (T. sinensis). Asymmetry of their karyotypes is categorized to be Type 3B in D. sinicus, Type 2A in P. racemosa, and Type 2A in T. sinensis. Each of the species shows special cytological features. Compared with Perrottetia, Dipentodon has a different basic chromosome number, a higher karyotype asymmetry, and different karyomorphology of its interphase nuclei, mitotic prophase, and metaphase. Thus, on the basis of these results, we have reservations regarding the suggestion of placing Dipentodon and Perrottetia together in the family Dipentodontaceae.4 Genomic analyses of intergeneric hybrids between Michelia crassipes and M. calcicola by GISH，Genomic in situ hybridization (GISH) is becoming the method of choice for identifying parental chromosomes in interspecific hybrids. Interspecific F1 hybrid between Michelia crassipes and M. calcicola, tow highly ornamental species in Michelia of Magnolicaceae, has been analized by double-colored GISH with its parents’ genome as the probe. Research gave the results that the chromosome number of the F1 hybrid is 2n=38 as the same of species in Michelia and other genera in Magnoliaceae, the basic chromosome is x=19, the karyotype formula is 2n=38=32m+6sm, and the asymmetry of karyotype is 1B type. Based on chromosome data of Michelia in our database, the karyotype of this genus is featured mostly by metacentric chromosomes and submetacentric chromosomes. In Mechelia, the variation range of submetacentric chromosomes is 4 to 18 and of the karyotype asymmetry is 1A to 2B type. Both the karyotype and karyotype asymmetry type of F1 hybrid is among the variation range of Michelia. The figure of GISH showed that all the 38 chromosomes of F1 hybrid have crossing parental signals, and signal on the no.1 and no.7 chromosome showed differences, which proved that both the parental genome have been transmitted to and recombinated in F1 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Light International Fellowship for Chinese Botanists at Missouri Botanical Garden","jscount":"1","jsurl":"/simple-search?field1=all&rpp=10&accurate=false&advanced=false&sort_by=2&isNonaffiliated=false&search_type=-1&query1=Chromosome%2BNumber&order=desc&&fq=dc.project.title_filter%3AGlory%5C+Light%5C+International%5C+Fellowship%5C+for%5C+Chinese%5C+Botanists%5C+at%5C+Missouri%5C+Botanical%5C+Garden"},{"jsname":"Interdisciplinary Research Project of Kunming Institute of Botany[KIB2017003]","jscount":"1","jsurl":"/simple-search?field1=all&rpp=10&accurate=false&advanced=false&sort_by=2&isNonaffiliated=false&search_type=-1&query1=Chromosome%2BNumber&order=desc&&fq=dc.project.title_filter%3AInterdisciplinary%5C+Research%5C+Project%5C+of%5C+Kunming%5C+Institute%5C+of%5C+Botany%5C%5BKIB2017003%5C%5D"},{"jsname":"Japan Society for the Promotion of Science[1264402271]","jscount":"1","jsurl":"/simple-search?field1=all&rpp=10&accurate=false&advanced=false&sort_by=2&isNonaffiliated=false&search_type=-1&query1=Chromosome%2BNumber&order=desc&&fq=dc.project.title_filter%3AJapan%5C+Society%5C+for%5C+the%5C+Promotion%5C+of%5C+Science%5C%5B1264402271%5C%5D"},{"jsname":"Kunming Institute of Botany, Chinese Academy of Sciences","jscount":"1","jsurl":"/simple-search?field1=all&rpp=10&accurate=false&advanced=false&sort_by=2&isNonaffiliated=false&search_type=-1&query1=Chromosome%2BNumber&order=desc&&fq=dc.project.title_filter%3AKunming%5C+Institute%5C+of%5C+Botany%2C%5C+Chinese%5C+Academy%5C+of%5C+Sciences"},{"jsname":"Large-scale Scientific Facilities of the Chinese Academy of Sciences[2017-LSFGBOWS-01]","jscount":"1","jsurl":"/simple-search?field1=all&rpp=10&accurate=false&advanced=false&sort_by=2&isNonaffiliated=false&search_type=-1&query1=Chromosome%2BNumber&order=desc&&fq=dc.project.title_filter%3ALarge%5C-scale%5C+Scientific%5C+Facilities%5C+of%5C+the%5C+Chinese%5C+Academy%5C+of%5C+Sciences%5C%5B2017%5C-LSFGBOWS%5C-01%5C%5D"},{"jsname":"Ministry of Science and Technology, Taiwan[106-2311-B-001-005]","jscount":"1","jsurl":"/simple-search?field1=all&rpp=10&accurate=false&advanced=false&sort_by=2&isNonaffiliated=false&search_type=-1&query1=Chromosome%2BNumber&order=desc&&fq=dc.project.title_filter%3AMinistry%5C+of%5C+Science%5C+and%5C+Technology%2C%5C+Taiwan%5C%5B106%5C-2311%5C-B%5C-001%5C-005%5C%5D"},{"jsname":"Moringa oleifera Lam. (Moringaceae) is an economically important multi-purpose tree indigenous to northwest India. Featured by richness in proteins, minerals and Vitamins, leaves of M. oleifera are used as highly nutrient vegetable and cattle fodder. Besides, the seed powder is used in water purification, and the seed oil is acquired for edibles, lubricating and cosmetics. Due to its multiple applications and commercial benefits, M. oleifera has been broadly introduced and cultivated around the world, and has been identified as the important one in agri-horti-silviculture programs. Mastering the reproductive characteristics and bionomics of a species is the foundation of fine variety breeding. And understanding the breeding system of M. oleifera provides basic evidence for the establishment of breeding techniques. Both traditional methods and modern DNA marker were applied to study the component parts of breeding system of M. oleifera introduced to Yunnan, China. Floral development, anthesis phenology, flowering pattern, species and visiting frequency of pollinating insects, as well as foraging behavior of pollinators were observed. Furthermore, the type of breeding system, outcrossing rate and gene flow were also tested by means of fluorescence, paraffin sections, outcrossing index, pollen-ovule ratio, and microsatellites. Then the findings are as follows. 1. Morphological differentiation of flower bud could be divided into 5 stages: bract differentiation, sepal differentiation, petal differentiation, stamen differentiation, and pistil differentiation. Abnormality of male and female reproductive structure is rare that do not prevent successful breeding. 2. With a few individuals flowering throughout the year, florescence of population appears twice a year, respectively in spring and autumn. Each blooming period lasts about 2 months, among which the stage of full blossom lasts about 1 month. The blooming period of a single flower is 7d, and anthesis time is forenoon. Pollen viability lasts from blooming to 24h after flowering, tested by TTC. While stigma reception lasts from 24h to 72h after blooming, tested by benzidine and hydrogen peroxide. Mature anthers and stigma are apart from time and space. Flavor rises up right away after blossom and continues to 48h.3. The OCI is 5, and P/O is 988.9±564.4. The breeding system of M. oleifera is outcrossing, partially self-compatible, and demand for pollinators. Self-incompatibility is gametophytic.4. A total of twenty polymorphic microsatellite markers were developed by method of FIASCO. The number of alleles per locus ranged from two to six, with an average of three. The expected (HE) and observed (HO) heterozygosities ranged from 0.3608 to 0.7606 (average of 0.5455) and from 0.0000 to 0.8750 (average of 0.4562), respectively. Seven loci were significantly deviated from Hardy-Weinberg equilibrium.5. Paternity analysis by SSR was used to estimate the outcrossing rate and gene flow of M. oleifera. The analysis was carried out in an experimental population with 12 maternal trees and 60 paternal trees. 155 seeds out of 288 seeds were confirmed pollen donors by 8 microsatellite loci at 95% strict confidence level. The multilocus outcrossing rate is tm=0.797，and single-locus outcrossing rate is ts=0.742. Most of pollen dispersal is within 20m, and the amount of downwind distribution is not significantly distinct from the upwind.6. The natural fruiting rate of M. oleifera is low under scale cultivation, and is limited by pollinators. Most reliable pollinators are Xylocopa valga andScolia vittifornis.7. Artificial xenogamy could improve fruit setting and the yield of seeds in practice.","jscount":"1","jsurl":"/simple-search?field1=all&rpp=10&accurate=false&advanced=false&sort_by=2&isNonaffiliated=false&search_type=-1&query1=Chromosome%2BNumber&order=desc&&fq=dc.project.title_filter%3AMoringa%5C+oleifera%5C+Lam.%5C+%5C%28Moringaceae%5C%29%5C+is%5C+an%5C+economically%5C+important%5C+multi%5C-purpose%5C+tree%5C+indigenous%5C+to%5C+northwest%5C+India.%5C+Featured%5C+by%5C+richness%5C+in%5C+proteins%2C%5C+minerals%5C+and%5C+Vitamins%2C%5C+leaves%5C+of%5C+M.%5C+oleifera%5C+are%5C+used%5C+as%5C+highly%5C+nutrient%5C+vegetable%5C+and%5C+cattle%5C+fodder.%5C+Besides%2C%5C+the%5C+seed%5C+powder%5C+is%5C+used%5C+in%5C+water%5C+purification%2C%5C+and%5C+the%5C+seed%5C+oil%5C+is%5C+acquired%5C+for%5C+edibles%2C%5C+lubricating%5C+and%5C+cosmetics.%5C+Due%5C+to%5C+its%5C+multiple%5C+applications%5C+and%5C+commercial%5C+benefits%2C%5C+M.%5C+oleifera%5C+has%5C+been%5C+broadly%5C+introduced%5C+and%5C+cultivated%5C+around%5C+the%5C+world%2C%5C+and%5C+has%5C+been%5C+identified%5C+as%5C+the%5C+important%5C+one%5C+in%5C+agri%5C-horti%5C-silviculture%5C+programs.%5C+Mastering%5C+the%5C+reproductive%5C+characteristics%5C+and%5C+bionomics%5C+of%5C+a%5C+species%5C+is%5C+the%5C+foundation%5C+of%5C+fine%5C+variety%5C+breeding.%5C+And%5C+understanding%5C+the%5C+breeding%5C+system%5C+of%5C+M.%5C+oleifera%5C+provides%5C+basic%5C+evidence%5C+for%5C+the%5C+establishment%5C+of%5C+breeding%5C+techniques.%5C+Both%5C+traditional%5C+methods%5C+and%5C+modern%5C+DNA%5C+marker%5C+were%5C+applied%5C+to%5C+study%5C+the%5C+component%5C+parts%5C+of%5C+breeding%5C+system%5C+of%5C+M.%5C+oleifera%5C+introduced%5C+to%5C+Yunnan%2C%5C+China.%5C+Floral%5C+development%2C%5C+anthesis%5C+phenology%2C%5C+flowering%5C+pattern%2C%5C+species%5C+and%5C+visiting%5C+frequency%5C+of%5C+pollinating%5C+insects%2C%5C+as%5C+well%5C+as%5C+foraging%5C+behavior%5C+of%5C+pollinators%5C+were%5C+observed.%5C+Furthermore%2C%5C+the%5C+type%5C+of%5C+breeding%5C+system%2C%5C+outcrossing%5C+rate%5C+and%5C+gene%5C+flow%5C+were%5C+also%5C+tested%5C+by%5C+means%5C+of%5C+fluorescence%2C%5C+paraffin%5C+sections%2C%5C+outcrossing%5C+index%2C%5C+pollen%5C-ovule%5C+ratio%2C%5C+and%5C+microsatellites.%5C+Then%5C+the%5C+findings%5C+are%5C+as%5C+follows.%5C+1.%5C+Morphological%5C+differentiation%5C+of%5C+flower%5C+bud%5C+could%5C+be%5C+divided%5C+into%5C+5%5C+stages%5C%3A%5C+bract%5C+differentiation%2C%5C+sepal%5C+differentiation%2C%5C+petal%5C+differentiation%2C%5C+stamen%5C+differentiation%2C%5C+and%5C+pistil%5C+differentiation.%5C+Abnormality%5C+of%5C+male%5C+and%5C+female%5C+reproductive%5C+structure%5C+is%5C+rare%5C+that%5C+do%5C+not%5C+prevent%5C+successful%5C+breeding.%5C+2.%5C+With%5C+a%5C+few%5C+individuals%5C+flowering%5C+throughout%5C+the%5C+year%2C%5C+florescence%5C+of%5C+population%5C+appears%5C+twice%5C+a%5C+year%2C%5C+respectively%5C+in%5C+spring%5C+and%5C+autumn.%5C+Each%5C+blooming%5C+period%5C+lasts%5C+about%5C+2%5C+months%2C%5C+among%5C+which%5C+the%5C+stage%5C+of%5C+full%5C+blossom%5C+lasts%5C+about%5C+1%5C+month.%5C+The%5C+blooming%5C+period%5C+of%5C+a%5C+single%5C+flower%5C+is%5C+7d%2C%5C+and%5C+anthesis%5C+time%5C+is%5C+forenoon.%5C+Pollen%5C+viability%5C+lasts%5C+from%5C+blooming%5C+to%5C+24h%5C+after%5C+flowering%2C%5C+tested%5C+by%5C+TTC.%5C+While%5C+stigma%5C+reception%5C+lasts%5C+from%5C+24h%5C+to%5C+72h%5C+after%5C+blooming%2C%5C+tested%5C+by%5C+benzidine%5C+and%5C+hydrogen%5C+peroxide.%5C+Mature%5C+anthers%5C+and%5C+stigma%5C+are%5C+apart%5C+from%5C+time%5C+and%5C+space.%5C+Flavor%5C+rises%5C+up%5C+right%5C+away%5C+after%5C+blossom%5C+and%5C+continues%5C+to%5C+48h.3.%5C+The%5C+OCI%5C+is%5C+5%2C%5C+and%5C+P%5C%2FO%5C+is%5C+988.9%C2%B1564.4.%5C+The%5C+breeding%5C+system%5C+of%5C+M.%5C+oleifera%5C+is%5C+outcrossing%2C%5C+partially%5C+self%5C-compatible%2C%5C+and%5C+demand%5C+for%5C+pollinators.%5C+Self%5C-incompatibility%5C+is%5C+gametophytic.4.%5C+A%5C+total%5C+of%5C+twenty%5C+polymorphic%5C+microsatellite%5C+markers%5C+were%5C+developed%5C+by%5C+method%5C+of%5C+FIASCO.%5C+The%5C+number%5C+of%5C+alleles%5C+per%5C+locus%5C+ranged%5C+from%5C+two%5C+to%5C+six%2C%5C+with%5C+an%5C+average%5C+of%5C+three.%5C+The%5C+expected%5C+%5C%28HE%5C%29%5C+and%5C+observed%5C+%5C%28HO%5C%29%5C+heterozygosities%5C+ranged%5C+from%5C+0.3608%5C+to%5C+0.7606%5C+%5C%28average%5C+of%5C+0.5455%5C%29%5C+and%5C+from%5C+0.0000%5C+to%5C+0.8750%5C+%5C%28average%5C+of%5C+0.4562%5C%29%2C%5C+respectively.%5C+Seven%5C+loci%5C+were%5C+significantly%5C+deviated%5C+from%5C+Hardy%5C-Weinberg%5C+equilibrium.5.%5C+Paternity%5C+analysis%5C+by%5C+SSR%5C+was%5C+used%5C+to%5C+estimate%5C+the%5C+outcrossing%5C+rate%5C+and%5C+gene%5C+flow%5C+of%5C+M.%5C+oleifera.%5C+The%5C+analysis%5C+was%5C+carried%5C+out%5C+in%5C+an%5C+experimental%5C+population%5C+with%5C+12%5C+maternal%5C+trees%5C+and%5C+60%5C+paternal%5C+trees.%5C+155%5C+seeds%5C+out%5C+of%5C+288%5C+seeds%5C+were%5C+confirmed%5C+pollen%5C+donors%5C+by%5C+8%5C+microsatellite%5C+loci%5C+at%5C+95%25%5C+strict%5C+confidence%5C+level.%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Project","dc.project.title_filter")'>
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Systematics and Biogeography of Aralia L. (Araliaceae):Revision of Aralia Sects. Aralia, Humiles, Nanae, andSciadodendron
期刊论文
出版物, 3111, 卷号: 57, 期号: 0, 页码: 1-172
Authors:
Jun Wen
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Submit date：2017/07/24
Aralia
Aralia Sect. Aralia
Aralia Sect. Dimorphanthus
Aralia Sect. Humiles
Aralia Sect. Nanae
Aralia Sect. pentapanax
Aralia Sect. Sciadodendron
Biogeography
Araliaceae
Systematics
HANDBOOKOF BIOLOGICAL STATISTICS
期刊论文
出版物, 3111, 期号: 0, 页码: 1-291
Authors:
JOHN H. MCDONALD
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Submit date：2017/07/24
Effector-triggered immunity by the plantpathogen Phytophthora
期刊论文
TRENDS in Microbiology, 3111, 卷号: 14, 期号: 11, 页码: 470-473
Authors:
Dinah Qutob
;
Jennifer Tedman-Jones
;
Mark Gijzen
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Submit date：2017/07/24
Evolutionary ecology of plant-plant interactions
期刊论文
出版物, 3111, 页码: 1-144
Authors:
Zuo Z(作者)
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Submit date：2017/07/19
De novo genome assembly of the endangered Acer yangbiense, a plant species with extremely small populations endemic to Yunnan Province, China
期刊论文
GIGASCIENCE, 2019, 卷号: 8, 期号: 7, 页码: 10
Authors:
Yang, Jing
;
Wariss, Hafiz Muhammad
;
Tao, Lidan
;
Zhang, Rengang
;
Yun, Quanzheng
;
Hollingsworth, Peter
;
Dao, Zhiling
;
Luo, Guifen
;
Guo, Huijun
;
Ma, Yongpeng
;
Sun, Weibang
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Submit date：2019/10/28
Acer yangbiense
PSESP
PacBio sequencing
genome assembly
genome annotation
Prevalence of isomeric plastomes and effectiveness of plastome super-barcodes in yews (Taxus) worldwide
期刊论文
SCIENTIFIC REPORTS, 2019, 卷号: 9, 页码: 11
Authors:
Fu, Chao-Nan
;
Wu, Chung-Shien
;
Ye, Lin-Jiang
;
Mo, Zhi-Qiong
;
Liu, Jie
;
Chang, Yu-Wen
;
Li, De-Zhu
;
Chaw, Shu-Miaw
;
Gao, Lian-Ming
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Submit date：2019/03/25
Genome Mining of Streptomyces sp. YIM 130001 Isolated From Lichen Affords New Thiopeptide Antibiotic
期刊论文
FRONTIERS IN MICROBIOLOGY, 2018, 卷号: 9, 页码: 12
Authors:
Schneider, Olha
;
Simic, Nebojsa
;
Aachmann, Finn Lillelund
;
Rueckert, Christian
;
Kristiansen, Kare Andre
;
Kalinowski, Joern
;
Jiang, Yi
;
Wang, Lisong
;
Jiang, Cheng-Lin
;
Lale, Rahmi
;
Zotchev, Sergey B.
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Submit date：2019/03/29
new Streptomyces sp. from lichen
antibacterial activity
genome mining
new thiopeptide antibiotic
berninamycins
中国植物学会八十五周年学术年会论文集摘要汇编
会议录
Editors:
植物学会
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Submit date：2018/10/24
A global plastid phylogeny uncovers extensive cryptic speciation in the fern genus
Hymenasplenium
(Aspleniaceae)
期刊论文
MOLECULAR PHYLOGENETICS AND EVOLUTION, 2018, 卷号: 127, 页码: 203-216
Authors:
Xu, Ke-Wang
;
Zhou, Xin-Mao
;
Yin, Qian-Yi
;
Zhang, Liang
;
Ngan Thi Lu
;
Knapp, Ralf
;
Thien Tam Luong
;
He, Hai
;
Fan, Qiang
;
Zhao, Wan-Yi
;
Gao, Xin-Fen
;
Liao, Wen-Bo
;
Zhang, Li-Bing
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Submit date：2018/12/27
Asplenium
Cryptic Species
Eupolypods Ii
Fern Phylogeny
Pantropical Distribution
Phylogeny and staminal evolution of Salvia (Lamiaceae, Nepetoideae) in East Asia
期刊论文
ANNALS OF BOTANY, 2018, 卷号: 122, 期号: 4, 页码: 649-668
Authors:
Hu, Guo-Xiong
;
Takano, Atsuko
;
Drew, Bryan T.
;
Liu, En-De
;
Soltis, Douglas E.
;
Soltis, Pamela S.
;
Peng, Hua
;
Xiang, Chun-Lei
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Submit date：2018/11/06
Salvia
Phylogeny
Staminal Evolution
Stamen Movement
Mentheae
Salvia Sonchifolia
Salvia Plebeia
Subg. Glutinaria
Sect. Sobiso
