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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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GST,p < 0.001) and low levels of seed-based gene flow. C. debaoensis (Cycadaceae) is an endangered species restricted to the border of Guangxi and Yunnan province in southwest China. This species has been classified into two types: sand and karst, according to the soil matrix they grow on. We examined chloroplast sequence variation of the cpDNA sequences from 11 populations of this species. Significant population genetic differentiation was detected (GST= 0.684 and FST = 0.74160). There was marked genetic differentiation between populations in the sand and karst regions and no expansion was detected. Climate changes during glacial periods have had significant effects on the current distribution of cycads. The molecular phylogenetic data, together with the geographic distribution of the haplotypes, suggest that C. debaoensis experienced range contraction during glacial periods, and that the current populations are still confined to the original refugia in southwest China which have favorable habitats in glacial period. These results imply that small refugia were maintained in both sand and karst regions during the LGM (last glacial maximum). This species had no postglacial recolonization and only stayed in these refugia up to now. The low within-population diversity of C. debaoensis suggests that there were strong bottleneck events or founder effects within each separate region during the Quaternary climatic oscillations. Relatively high genetic and haplotype diversities were detected in the newly discovered populations, which located at intermediate locality of sand regions and had morphological variation; this is probably the consequence of the admixture of different haplotypes colonizing the area from separate sources. C. micholitzii occurs in the Annan Highlands in central Vietnam near the Laos border. C. bifida occurs in North Vietnam; its distribution extends across the border into adjacent localities in Guangxi and Yunnan in China. For the comparability between them,theywere considered as the same species C. micholitzii by many academicians. The cpDNA sequences from 11 populations showed that these very controversial species, C. micholitzii and C. bifida, is paraphyletic and should belong to the same species C. micholitzii. AMOVA analysis showed that the component of among-population within region/species (76.46%) was unexpectedly larger than the among-species/region component (14.97%), which also indicates that there is no justification for recognizing two species as C. micholitzii and C. bifida. This hypothesis was also supported by the geological data, especially the neotectonic history of the indo-china block, which started to move south since Oligocene and cause the geographic isolation of these two groups. Therefore, the most likely explanation to the phenotypic similarities between these two groups may be the retention of ancestral polymorphisms in the paraphyletic group due to incomplete lineage sorting. Furthermore, the similarities may also be ascribed to pollen-mediated gene flow among geographically proximate populations and/or phenotypic convergence under similar selection schemes in the same region. C.micholitzi had the higest genetic diversity (HT = 0.980,) and genetic differentiation (GST = 0.830, NST = 0.915) among the C. micholitzii complex. The high genetic diversity might be attributed to its long evolutionary history, highly diverse habitats. The ineffective mode of seed dispersal and dramatic neotectonic movement in the distribution range of this species could result in the high genetic differentiation. 2. Phylogeographic analysis based on nuclear ribosomal sequences, We sequenced the nrDNA ITS in all 27 populations sampled, 7 haplotypes were identified, among which C. micholitzii had 6, while C. multipinnata, C. longipetiolula and C. debaoensis shared the remaining one. Compared to chloroplast genes, nuclear genes had higher correlation between genetic and geographical distance, but lower interspecies differentiation (54.42% vs 25.24%). Phylogeographical structure of C. micholitzii and C.bifida based on ITS Variation was consistent with the morphology differentiation. This similar in nuclear gene should be ascribed to pollen-mediated gene flow among geographically proximate populations.Long-distance gene flow over the two groups was clearly interrupted, which brought on the nrDNA genetic differenciation between the geographically isolated groups, to a certain extent affected the morphological variation. 3. Interspecies relationships among Cycas micholitzii complex, We analysed chloroplast sequence variation of the atpB-rbcL and psbA-trnH intergenic spacers in 27 populations sampled of C. micholitzii complex, AMOVA analysis showed that the component of among-species/region component (59.21%). However, phylogenic analysis showed that the haplotypes of C. micholitzii complex couldn`t grouped into four clusters closely corresponding to the narrowly defined C. micholitzi, C. multipinnata, C. debaoensis and C. longipetiolula. We concluded that the conflict may result from several factors: firstly incomplete lineage sorting of C. micholitzii; secondly hybridization/introgression of sympatrically cycads, which would be supported by evidence base on nrDNA ITS sequences; thirdly intramolecular recombination in cpDNA of cycads; eventually the neotectonic movement in the distribution range of this species.","jscount":"1","jsurl":"/simple-search?field1=all&rpp=10&accurate=false&advanced=false&sort_by=2&isNonaffiliated=false&search_type=-1&query1=Species%2BRecognition&order=desc&&fq=dc.project.title_filter%3ACycas%5C+micholitzii%5C+complex%5C+is%5C+composed%5C+of%5C+5%5C+species%5C%3A%5C+C.%5C+micholitzii%5C+Dyer%2C%5C+C.%5C+bifida%5C+%5C%28Dyer%5C%29%5C+K.%5C+D.%5C+Hill%2CC.%5C+longipetiolula%5C+D.%5C+Y.%5C+Wang%2C%5C+C.%5C+debaoensis%5C+Y.%5C+C.%5C+Zhong%5C+et%5C+C%5C+J.%5C+Chen%2C%5C+C.%5C+multipinnata%5C+C%5C+J.%5C+Chen%5C+et%5C+S.%5C+Y.%5C+Yang%EF%BC%8Cand%5C+distributed%5C+from%5C+southwest%5C+China%5C+to%5C+central%5C+Vietnam%5C+and%5C+eastern%5C+Laos.%5C+Based%5C+on%5C+sequence%5C+data%5C+from%5C+two%5C+maternally%5C+inherited%5C+cpDNA%5C+and%5C+one%5C+biparentally%5C+nuclear%5C+DNA%5C+fragments%2C%5C+our%5C+study%5C+revealed%5C+the%5C+population%5C+genetic%5C+structure%5C+of%5C+C.%5C+micholitzii%5C+complex%5C+and%5C+explored%5C+the%5C+potential%5C+causes.%5C+The%5C+evolutionary%5C+and%5C+demographic%5C+histories%5C+were%5C+investigated.%5C+The%5C+genetic%5C+relationship%5C+among%5C+species%5C+in%5C+the%5C+complex%5C+was%5C+also%5C+clarified.The%5C+results%5C+were%5C+summarized%5C+as%5C+follows%5C%3A%5C+1.%5C+Phylogeographic%5C+analysis%5C+based%5C+on%5C+chloroplast%5C+sequences%EF%BC%8CWe%5C+examined%5C+chloroplast%5C+sequence%5C+variation%5C+of%5C+the%5C+atpB%5C-rbcLand%5C+psbA%5C-trnHintergenic%5C+spacers%5C+in%5C+27%5C+populations%5C+of%5C+C.%5C+micholitzii%5C+complex%2C%5C+recovering%5C+26%5C+haplotypes.%5C+The%5C+average%5C+within%5C-population%5C+diversity%5C+%5C%28HS%5C+%3D%5C+0.140%5C%29%5C+was%5C+low%5C+while%5C+total%5C+diversity%5C+%5C%28HT%5C+%3D%5C+0.911%5C%29%5C+was%5C+high.%5C+Population%5C+differentiation%5C+was%5C+also%5C+high%5C%28GST%5C+%3D%5C+0.846%2C%5C+NST%5C+%3D%5C+0.919%5C%29%2C%5C+indicating%5C+significant%5C+phylogeographical%5C+structure%5C+%5C%28NST%5C+%3E%5C+GST%2Cp%5C+%3C%5C+0.001%5C%29%5C+and%5C+low%5C+levels%5C+of%5C+seed%5C-based%5C+gene%5C+flow.%5C+C.%5C+debaoensis%5C+%5C%28Cycadaceae%5C%29%5C+is%5C+an%5C+endangered%5C+species%5C+restricted%5C+to%5C+the%5C+border%5C+of%5C+Guangxi%5C+and%5C+Yunnan%5C+province%5C+in%5C+southwest%5C+China.%5C+This%5C+species%5C+has%5C+been%5C+classified%5C+into%5C+two%5C+types%5C%3A%5C+sand%5C+and%5C+karst%2C%5C+according%5C+to%5C+the%5C+soil%5C+matrix%5C+they%5C+grow%5C+on.%5C+We%5C+examined%5C+chloroplast%5C+sequence%5C+variation%5C+of%5C+the%5C+cpDNA%5C+sequences%5C+from%5C+11%5C+populations%5C+of%5C+this%5C+species.%5C+Significant%5C+population%5C+genetic%5C+differentiation%5C+was%5C+detected%5C+%5C%28GST%3D%5C+0.684%5C+and%5C+FST%5C+%3D%5C+0.74160%5C%29.%5C+There%5C+was%5C+marked%5C+genetic%5C+differentiation%5C+between%5C+populations%5C+in%5C+the%5C+sand%5C+and%5C+karst%5C+regions%5C+and%5C+no%5C+expansion%5C+was%5C+detected.%5C+Climate%5C+changes%5C+during%5C+glacial%5C+periods%5C+have%5C+had%5C+significant%5C+effects%5C+on%5C+the%5C+current%5C+distribution%5C+of%5C+cycads.%5C+The%5C+molecular%5C+phylogenetic%5C+data%2C%5C+together%5C+with%5C+the%5C+geographic%5C+distribution%5C+of%5C+the%5C+haplotypes%2C%5C+suggest%5C+that%5C+C.%5C+debaoensis%5C+experienced%5C+range%5C+contraction%5C+during%5C+glacial%5C+periods%2C%5C+and%5C+that%5C+the%5C+current%5C+populations%5C+are%5C+still%5C+confined%5C+to%5C+the%5C+original%5C+refugia%5C+in%5C+southwest%5C+China%5C+which%5C+have%5C+favorable%5C+habitats%5C+in%5C+glacial%5C+period.%5C+These%5C+results%5C+imply%5C+that%5C+small%5C+refugia%5C+were%5C+maintained%5C+in%5C+both%5C+sand%5C+and%5C+karst%5C+regions%5C+during%5C+the%5C+LGM%5C+%5C%28last%5C+glacial%5C+maximum%5C%29.%5C+This%5C+species%5C+had%5C+no%5C+postglacial%5C+recolonization%5C+and%5C+only%5C+stayed%5C+in%5C+these%5C+refugia%5C+up%5C+to%5C+now.%5C+The%5C+low%5C+within%5C-population%5C+diversity%5C+of%5C+C.%5C+debaoensis%5C+suggests%5C+that%5C+there%5C+were%5C+strong%5C+bottleneck%5C+events%5C+or%5C+founder%5C+effects%5C+within%5C+each%5C+separate%5C+region%5C+during%5C+the%5C+Quaternary%5C+climatic%5C+oscillations.%5C+Relatively%5C+high%5C+genetic%5C+and%5C+haplotype%5C+diversities%5C+were%5C+detected%5C+in%5C+the%5C+newly%5C+discovered%5C+populations%2C%5C+which%5C+located%5C+at%5C+intermediate%5C+locality%5C+of%5C+sand%5C+regions%5C+and%5C+had%5C+morphological%5C+variation%5C%3B%5C+this%5C+is%5C+probably%5C+the%5C+consequence%5C+of%5C+the%5C+admixture%5C+of%5C+different%5C+haplotypes%5C+colonizing%5C+the%5C+area%5C+from%5C+separate%5C+sources.%5C+%5C+C.%5C+micholitzii%5C+occurs%5C+in%5C+the%5C+Annan%5C+Highlands%5C+in%5C+central%5C+Vietnam%5C+near%5C+the%5C+Laos%5C+border.%5C+C.%5C+bifida%5C+occurs%5C+in%5C+North%5C+Vietnam%5C%3B%5C+its%5C+distribution%5C+extends%5C+across%5C+the%5C+border%5C+into%5C+adjacent%5C+localities%5C+in%5C+Guangxi%5C+and%5C+Yunnan%5C+in%5C+China.%5C+For%5C+the%5C+comparability%5C+between%5C+them%2Ctheywere%5C+considered%5C+as%5C+the%5C+same%5C+species%5C+C.%5C+micholitzii%5C+by%5C+many%5C+acad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Science Foundation, GAR[P506/14/13541S]","jscount":"1","jsurl":"/simple-search?field1=all&rpp=10&accurate=false&advanced=false&sort_by=2&isNonaffiliated=false&search_type=-1&query1=Species%2BRecognition&order=desc&&fq=dc.project.title_filter%3ACzech%5C+Science%5C+Foundation%2C%5C+GAR%5C%5BP506%5C%2F14%5C%2F13541S%5C%5D"},{"jsname":"Friends of the Royal Botanic Gardens Victoria","jscount":"1","jsurl":"/simple-search?field1=all&rpp=10&accurate=false&advanced=false&sort_by=2&isNonaffiliated=false&search_type=-1&query1=Species%2BRecognition&order=desc&&fq=dc.project.title_filter%3AFriends%5C+of%5C+the%5C+Royal%5C+Botanic%5C+Gardens%5C+Victoria"},{"jsname":"How has natural selection determined the evolution of gene regulation by acting on major regulatory factors? This question has been attractive to many evolutionary biologists for a long time. MicroRNAs (miRNAs) are endogenous posttranscriptional repressors and play essential roles in diverse biological processes in plants. To understand how natural selection has targeted on the entire lay of miRNA regulatory modules during flower development, we resequenced 31 miRNA target sites involved in flower development from five rice populations. We found that purifying selection serves as a major evolutionary force to act on the conserved miRNA binding sites, leading to the globally reduced genetic variation in highly conserved miRNA binding sequences within the entire rice samples. Conversely, positive selection allows variations at nonconserved miRNA binding sites and acts on them in a population-specific behaviour. Further analysis revealed that the polymorphisms within target sites may serve as raw materials for diverse functions of miRNAs by means of the destabilization of duplex, abolishment of existing target sites, and creation of novel ones. Together, the above-mentioned results indicate that variations at conserved binding sites are likely deleterious during rice flower development, whereas variants at nonconserved binding sites may be conductive to flower development-related phenotypic diversities and rice population adaption to variable environmental conditions as well. To further assess functional effects and evolutionary significance of variable alleles at the target genes, we reported the detailed characterization of the haplotype and linkage disequilibrium (LD) patterns of the entire target gene (LOC_Os01g18850，SPL 1) and the 1.4 Mb flanking regions in three rice populations, namely japonica, indica and O. rufipogon. The genetic profile of SNPs at target site and its flanking regions revealed high haplotype frequency, low haplotype diversity and strong LD in two cultivatedricepopulations. By contrast, we observed the opposite phenomena in O. rufipogon. Using the long-range haplotype (LRT) test, we found strong evidence of recent positive selection for SNP 3C/T alleles at target site in the combined O. sativa. Comparsion between the two rice subpopulations indicated that the major haplotype mh 2 containing SNP 3C accounts for half of all haplotypes in indica, while mh 3 containing SNP 3T is 91% in japonica. Moreover, the extent of LD is stronger in japonica than that in inidca. These differences suggest that independent evolutionary events may have occurred in target sequences of two cultivated rice populations and stronger positive selection acted on japonica. Next, we examined geographic distribution of polymorphic variants at target sites. We found that the major alleles SNP 3T and tightly linked SNP 4A in japonica appear to be associated with the adaption to the northern climates during rice flower development.","jscount":"1","jsurl":"/simple-search?field1=all&rpp=10&accurate=false&advanced=false&sort_by=2&isNonaffiliated=false&search_type=-1&query1=Species%2BRecognition&order=desc&&fq=dc.project.title_filter%3AHow%5C+has%5C+natural%5C+selection%5C+determined%5C+the%5C+evolution%5C+of%5C+gene%5C+regulation%5C+by%5C+acting%5C+on%5C+major%5C+regulatory%5C+factors%5C%3F%5C+This%5C+question%5C+has%5C+been%5C+attractive%5C+to%5C+many%5C+evolutionary%5C+biologists%5C+for%5C+a%5C+long%5C+time.%5C+MicroRNAs%5C+%5C%28miRNAs%5C%29%5C+are%5C+endogenous%5C+posttranscriptional%5C+repressors%5C+and%5C+play%5C+essential%5C+roles%5C+in%5C+diverse%5C+biological%5C+processes%5C+in%5C+plants.%5C+To%5C+understand%5C+how%5C+natural%5C+selection%5C+has%5C+targeted%5C+on%5C+the%5C+entire%5C+lay%5C+of%5C+miRNA%5C+regulatory%5C+modules%5C+during%5C+flower%5C+development%2C%5C+we%5C+resequenced%5C+31%5C+miRNA%5C+target%5C+sites%5C+involved%5C+in%5C+flower%5C+development%5C+from%5C+five%5C+rice%5C+populations.%5C+We%5C+found%5C+that%5C+purifying%5C+selection%5C+serves%5C+as%5C+a%5C+major%5C+evolutionary%5C+force%5C+to%5C+act%5C+on%5C+the%5C+conserved%5C+miRNA%5C+binding%5C+sites%2C%5C+leading%5C+to%5C+the%5C+globally%5C+reduced%5C+genetic%5C+variation%5C+in%5C+highly%5C+conserved%5C+miRNA%5C+binding%5C+sequences%5C+within%5C+the%5C+entire%5C+rice%5C+samples.%5C+Conversely%2C%5C+positive%5C+selection%5C+allows%5C+variations%5C+at%5C+nonconserved%5C+miRNA%5C+binding%5C+sites%5C+and%5C+acts%5C+on%5C+them%5C+in%5C+a%5C+population%5C-specific%5C+behaviour.%5C+Further%5C+analysis%5C+revealed%5C+that%5C+the%5C+polymorphisms%5C+within%5C+target%5C+sites%5C+may%5C+serve%5C+as%5C+raw%5C+materials%5C+for%5C+diverse%5C+functions%5C+of%5C+miRNAs%5C+by%5C+means%5C+of%5C+the%5C+destabilization%5C+of%5C+duplex%2C%5C+abolishment%5C+of%5C+existing%5C+target%5C+sites%2C%5C+and%5C+creation%5C+of%5C+novel%5C+ones.%5C+Together%2C%5C+the%5C+above%5C-mentioned%5C+results%5C+indicate%5C+that%5C+variations%5C+at%5C+conserved%5C+binding%5C+sites%5C+are%5C+likely%5C+deleterious%5C+during%5C+rice%5C+flower%5C+development%2C%5C+whereas%5C+variants%5C+at%5C+nonconserved%5C+binding%5C+sites%5C+may%5C+be%5C+conductive%5C+to%5C+flower%5C+development%5C-related%5C+phenotypic%5C+diversities%5C+and%5C+rice%5C+population%5C+adaption%5C+to%5C+variable%5C+environmental%5C+conditions%5C+as%5C+well.%5C+To%5C+further%5C+assess%5C+functional%5C+effects%5C+and%5C+evolutionary%5C+significance%5C+of%5C+variable%5C+alleles%5C+at%5C+the%5C+target%5C+genes%2C%5C+we%5C+reported%5C+the%5C+detailed%5C+characterization%5C+of%5C+the%5C+haplotype%5C+and%5C+linkage%5C+disequilibrium%5C+%5C%28LD%5C%29%5C+patterns%5C+of%5C+the%5C+entire%5C+target%5C+gene%5C+%5C%28LOC_Os01g18850%EF%BC%8CSPL%5C+1%5C%29%5C+and%5C+the%5C+1.4%5C+Mb%5C+flanking%5C+regions%5C+in%5C+three%5C+rice%5C+populations%2C%5C+namely%5C+japonica%2C%5C+indica%5C+and%5C+O.%5C+rufipogon.%5C+The%5C+genetic%5C+profile%5C+of%5C+SNPs%5C+at%5C+target%5C+site%5C+and%5C+its%5C+flanking%5C+regions%5C+revealed%5C+high%5C+haplotype%5C+frequency%2C%5C+low%5C+haplotype%5C+diversity%5C+and%5C+strong%5C+LD%5C+in%5C+two%5C+cultivatedricepopulations.%5C+By%5C+contrast%2C%5C+we%5C+observed%5C+the%5C+opposite%5C+phenomena%5C+in%5C+O.%5C+rufipogon.%5C+Using%5C+the%5C+long%5C-range%5C+haplotype%5C+%5C%28LRT%5C%29%5C+test%2C%5C+we%5C+found%5C+strong%5C+evidence%5C+of%5C+recent%5C+positive%5C+selection%5C+for%5C+SNP%5C+3C%5C%2FT%5C+alleles%5C+at%5C+target%5C+site%5C+in%5C+the%5C+combined%5C+O.%5C+sativa.%5C+Comparsion%5C+between%5C+the%5C+two%5C+rice%5C+subpopulations%5C+indicated%5C+that%5C+the%5C+major%5C+haplotype%5C+mh%5C+2%5C+containing%5C+SNP%5C+3C%5C+accounts%5C+for%5C+half%5C+of%5C+all%5C+haplotypes%5C+in%5C+indica%2C%5C+while%5C+mh%5C+3%5C+containing%5C+SNP%5C+3T%5C+is%5C+91%25%5C+in%5C+japonica.%5C+Moreover%2C%5C+the%5C+extent%5C+of%5C+LD%5C+is%5C+stronger%5C+in%5C+japonica%5C+than%5C+that%5C+in%5C+inidca.%5C+These%5C+differences%5C+suggest%5C+that%5C+independent%5C+evolutionary%5C+events%5C+may%5C+have%5C+occurred%5C+in%5C+target%5C+sequences%5C+of%5C+two%5C+cultivated%5C+rice%5C+populations%5C+and%5C+stronger%5C+positive%5C+selection%5C+acted%5C+on%5C+japonica.%5C+Next%2C%5C+we%5C+examined%5C+geographic%5C+distribution%5C+of%5C+polymorphic%5C+variants%5C+at%5C+target%5C+sites.%5C+We%5C+found%5C+that%5C+the%5C+major%5C+alleles%5C+SNP%5C+3T%5C+and%5C+tightly%5C+linked%5C+SNP%5C+4A%5C+in%5C+japonica%5C+appear%5C+to%5C+be%5C+associated%5C+with%5C+the%5C+adaption%5C+to%5C+the%5C+northern%5C+climates%5C+during%5C+rice%5C+flower%5C+development."},{"jsname":"In our continuing efforts to find anti - HBV (hepatitis B virus ) agents from natural sources, the chemical constituents of Curculigo orchioides Gaertn.were investigated intensively to result in the isolation and identification of 83 compounds from the 90% EtOH extract of rhizomers. The types of isolates involved in phenols and phenolic glycosides, cycloartenols and cycloartane saponins, monoterpenoids, sesquiterpenoids, cycolodipeptides, liglans, orcinosides A-C), four phenolic derivatives (orcinosides H-J and orcinol A) linked with heterocycle, and two phenolic glycosides (orcinosides K-L) contained chlorine atom, were elucidated based on spectroscopic methods (1H NMR, 13C NMR, HSQC, HMBC, COSY, ROESY, IR, MS, UV). Additionally, our investigation revealed the presence of C. orchioides for the first time. cyclic dipeptides from steroids, heterocycles, sugars, and fatty acids. Among them, 26 new compounds, including three novel dimeric phenol glycosides (Those findings enlarged the knowledge of chemical constituents from C. orchioides. The isolateswere evaluated for their anti-HBV activities in the HBV transfected Hep G 2.2.15 cell line in vitro. The results demonstrated that the phenolic glycoside dimers, phenolic derivatives linked with heterocycle, phenolic glycosides contained chlorine atom, and cyclic dipeptides had inhibitory action on the production of HBsAg and HBeAg. The most active compound, orcinol B (21), showed an IC50 value of 2.22 mM in inhibiting HBsAg secretion with a selectivity index (SI = 1.75) and an IC50 value of 0.83 mM (SI = 4.66) in inhibiting HBeAg secretion of the Hep G2.2.15 cells. Compound 11, possessed a heterocycle in the molecule, exhibited moderate inhibitory activities against HBsAg and HBeAg with IC50 value of 2.17 and 1.60 mM, respectively; T he compound 13, connected with two chlorine atom, showed an IC50 value of 1.38 mM in inhibiting HBsAg secretion and an IC50 value of 1.76 mM inhibiting HBeAg secretion of the Hep G2.2.15 cells. Compounds 5 and 20 showed potent anti-HBV activity, inhibiting HBsAg secretion with IC50 of 1.85 mM and 3.51 mM, respectively. Our extensive investigation on the chemical constituents of C. orchioides led to the isolation of phenolic glycoside dimers, phenolic dervatives linked with heterocycle, phenolic glycosides contained chlorine atom, and cyclic dipeptides from C. orchioides. To the best of our knowledge, it was the first time to investigate the anti - HBV activities of C. orchioides; it was also for the first time to report the phenolic dervatives from C. orchioides with anti-HBV activity. Up to now, no other documents reported the dimeric phenol glycosides from the family Hypoxidaceae except our latest paper. It was also found for the first time that the heterocycle moieties, existed as a substituent of phenolic glycosides in C. orchioides, characterized by the different linkage pattern for heterocycle with the C-atom in the phenolic glycosides, or with the substitutes in the phenolic glycosides. Those finding including phenolic glycoside dimers, phenolic dervatives linked with heterocycle, phenolic glycosides contained chlorine atom, and cyclo-dipeptides from C. orchioides provided fundamental substance for further exploring of C. orchioides.","jscount":"1","jsurl":"/simple-search?field1=all&rpp=10&accurate=false&advanced=false&sort_by=2&isNonaffiliated=false&search_type=-1&query1=Species%2BRecognition&order=desc&&fq=dc.project.title_filter%3AIn%5C+our%5C+continuing%5C+efforts%5C+to%5C+find%5C+anti%5C+%5C-%5C+HBV%5C+%5C%28hepatitis%5C+B%5C+virus%5C+%5C%29%5C+agents%5C+from%5C+natural%5C+sources%2C%5C+the%5C+chemical%5C+constituents%5C+of%5C+Curculigo%5C+orchioides%5C+Gaertn.were%5C+investigated%5C+intensively%5C+to%5C+result%5C+in%5C+the%5C+isolation%5C+and%5C+identification%5C+of%5C+83%5C+compounds%5C+from%5C+the%5C+90%25%5C+EtOH%5C+extract%5C+of%5C+rhizomers.%5C+The%5C+types%5C+of%5C+isolates%5C+involved%5C+in%5C+phenols%5C+and%5C+phenolic%5C+glycosides%2C%5C+cycloartenols%5C+and%5C+cycloartane%5C+saponins%2C%5C+monoterpenoids%2C%5C+sesquiterpenoids%2C%5C+cycolodipeptides%2C%5C+liglans%2C%5C+orcinosides%5C+A%5C-C%5C%29%2C%5C+four%5C+phenolic%5C+derivatives%5C+%5C%28orcinosides%5C+H%5C-J%5C+and%5C+orcinol%5C+A%5C%29%5C+linked%5C+with%5C+heterocycle%2C%5C+and%5C+two%5C+phenolic%5C+glycosides%5C+%5C%28orcinosides%5C+K%5C-L%5C%29%5C+contained%5C+chlorine%5C+atom%2C%5C+were%5C+elucidated%5C+based%5C+on%5C+spectroscopic%5C+methods%5C+%5C%281H%5C+NMR%2C%5C+13C%5C+NMR%2C%5C+HSQC%2C%5C+HMBC%2C%5C+COSY%2C%5C+ROESY%2C%5C+IR%2C%5C+MS%2C%5C+UV%5C%29.%5C+Additionally%2C%5C+our%5C+investigation%5C+revealed%5C+the%5C+presence%5C+of%5C+C.%5C+orchioides%5C+for%5C+the%5C+first%5C+time.%5C+cyclic%5C+dipeptides%5C+from%5C+steroids%2C%5C+heterocycles%2C%5C+sugars%2C%5C+and%5C+fatty%5C+acids.%5C+Among%5C+them%2C%5C+26%5C+new%5C+compounds%2C%5C+including%5C+three%5C+novel%5C+dimeric%5C+phenol%5C+glycosides%5C+%5C%28Those%5C+findings%5C+enlarged%5C+the%5C+knowledge%5C+of%5C+chemical%5C+constituents%5C+from%5C+C.%5C+orchioides.%5C+The%5C+isolateswere%5C+evaluated%5C+for%5C+their%5C+anti%5C-HBV%5C+activities%5C+in%5C+the%5C+HBV%5C+transfected%5C+Hep%5C+G%5C+2.2.15%5C+cell%5C+line%5C+in%5C+vitro.%5C+The%5C+results%5C+demonstrated%5C+that%5C+the%5C+phenolic%5C+glycoside%5C+dimers%2C%5C+phenolic%5C+derivatives%5C+linked%5C+with%5C+heterocycle%2C%5C+phenolic%5C+glycosides%5C+contained%5C+chlorine%5C+atom%2C%5C+and%5C+cyclic%5C+dipeptides%5C+had%5C+inhibitory%5C+action%5C+on%5C+the%5C+production%5C+of%5C+HBsAg%5C+and%5C+HBeAg.%5C+The%5C+most%5C+active%5C+compound%2C%5C+orcinol%5C+B%5C+%5C%2821%5C%29%2C%5C+showed%5C+an%5C+IC50%5C+value%5C+of%5C+2.22%5C+mM%5C+in%5C+inhibiting%5C+HBsAg%5C+secretion%5C+with%5C+a%5C+selectivity%5C+index%5C+%5C%28SI%5C+%3D%5C+1.75%5C%29%5C+and%5C+an%5C+IC50%5C+value%5C+of%5C+0.83%5C+mM%5C+%5C%28SI%5C+%3D%5C+4.66%5C%29%5C+in%5C+inhibiting%5C+HBeAg%5C+secretion%5C+of%5C+the%5C+Hep%5C+G2.2.15%5C+cells.%5C+Compound%5C+11%2C%5C+possessed%5C+a%5C+heterocycle%5C+in%5C+the%5C+molecule%2C%5C+exhibited%5C+moderate%5C+inhibitory%5C+activities%5C+against%5C+HBsAg%5C+and%5C+HBeAg%5C+with%5C+IC50%5C+value%5C+of%5C+2.17%5C+and%5C+1.60%5C+mM%2C%5C+respectively%5C%3B%5C+T%5C+he%5C+compound%5C+13%2C%5C+connected%5C+with%5C+two%5C+chlorine%5C+atom%2C%5C+showed%5C+an%5C+IC50%5C+value%5C+of%5C+1.38%5C+mM%5C+in%5C+inhibiting%5C+HBsAg%5C+secretion%5C+and%5C+an%5C+IC50%5C+value%5C+of%5C+1.76%5C+mM%5C+inhibiting%5C+HBeAg%5C+secretion%5C+of%5C+the%5C+Hep%5C+G2.2.15%5C+cells.%5C+Compounds%5C+5%5C+and%5C+20%5C+showed%5C+potent%5C+anti%5C-HBV%5C+activity%2C%5C+inhibiting%5C+HBsAg%5C+secretion%5C+with%5C+IC50%5C+of%5C+1.85%5C+mM%5C+and%5C+3.51%5C+mM%2C%5C+respectively.%5C+Our%5C+extensive%5C+investigation%5C+on%5C+the%5C+chemical%5C+constituents%5C+of%5C+C.%5C+orchioides%5C+led%5C+to%5C+the%5C+isolation%5C+of%5C+phenolic%5C+glycoside%5C+dimers%2C%5C+phenolic%5C+dervatives%5C+linked%5C+with%5C+heterocycle%2C%5C+phenolic%5C+glycosides%5C+contained%5C+chlorine%5C+atom%2C%5C+and%5C+cyclic%5C+dipeptides%5C+from%5C+C.%5C+orchioides.%5C+To%5C+the%5C+best%5C+of%5C+our%5C+knowledge%2C%5C+it%5C+was%5C+the%5C+first%5C+time%5C+to%5C+investigate%5C+the%5C+anti%5C+%5C-%5C+HBV%5C+activities%5C+of%5C+C.%5C+orchioides%5C%3B%5C+it%5C+was%5C+also%5C+for%5C+the%5C+first%5C+time%5C+to%5C+report%5C+the%5C+phenolic%5C+dervatives%5C+from%5C+C.%5C+orchioides%5C+with%5C+anti%5C-HBV%5C+activity.%5C+Up%5C+to%5C+now%2C%5C+no%5C+other%5C+documents%5C+reported%5C+the%5C+dimeric%5C+phenol%5C+glycosides%5C+from%5C+the%5C+family%5C+Hypoxidaceae%5C+except%5C+our%5C+latest%5C+paper.%5C+It%5C+was%5C+also%5C+found%5C+for%5C+the%5C+first%5C+time%5C+that%5C+the%5C+heterocycle%5C+moieties%2C%5C+existed%5C+as%5C+a%5C+substituent%5C+of%5C+phenolic%5C+glycosides%5C+in%5C+C.%5C+orchioides%2C%5C+characterized%5C+by%5C+the%5C+different%5C+linkage%5C+pattern%5C+for%5C+heterocycle%5C+with%5C+the%5C+C%5C-atom%5C+in%5C+the%5C+phenolic%5C+glycosides%2C%5C+or%5C+with%5C+the%5C+substitutes%5C+in%5C+the%5C+phenolic%5C+glycosides.%5C+Those%5C+finding%5C+including%5C+phenolic%5C+glycoside%5C+dimers%2C%5C+phenolic%5C+dervatives%5C+linked%5C+with%5C+heterocycle%2C%5C+phenolic%5C+glycosides%5C+contained%5C+chlorine%5C+atom%2C%5C+and%5C+cyclo%5C-dipeptides%5C+from%5C+C.%5C+orchioides%5C+provided%5C+fundamental%5C+substance%5C+for%5C+further%5C+exploring%5C+of%5C+C.%5C+orchioides."},{"jsname":"Innovation Program of the Chinese Academy of Sciences[KSCX2-YW-Z-0926]","jscount":"1","jsurl":"/simple-search?field1=all&rpp=10&accurate=false&advanced=false&sort_by=2&isNonaffiliated=false&search_type=-1&query1=Species%2BRecognition&order=desc&&fq=dc.project.title_filter%3AInnovation%5C+Program%5C+of%5C+the%5C+Chinese%5C+Academy%5C+of%5C+Sciences%5C%5BKSCX2%5C-YW%5C-Z%5C-0926%5C%5D"},{"jsname":"Major Program of the NSFC[31590823]","jscount":"1","jsurl":"/simple-search?field1=all&rpp=10&accurate=false&advanced=false&sort_by=2&isNonaffiliated=false&search_type=-1&query1=Species%2BRecognition&order=desc&&fq=dc.project.title_filter%3AMajor%5C+Program%5C+of%5C+the%5C+NSFC%5C%5B31590823%5C%5D"},{"jsname":"Mushroom Research Foundation","jscount":"1","jsurl":"/simple-search?field1=all&rpp=10&accurate=false&advanced=false&sort_by=2&isNonaffiliated=false&search_type=-1&query1=Species%2BRecognition&order=desc&&fq=dc.project.title_filter%3AMushroom%5C+Research%5C+Foundation"},{"jsname":"NSFC[31170181]","jscount":"1","jsurl":"/simple-search?field1=all&rpp=10&accurate=false&advanced=false&sort_by=2&isNonaffiliated=false&search_type=-1&query1=Species%2BRecognition&order=desc&&fq=dc.project.title_filter%3ANSFC%5C%5B31170181%5C%5D"},{"jsname":"NSFC[U1602264]","jscount":"1","jsurl":"/simple-search?field1=all&rpp=10&accurate=false&advanced=false&sort_by=2&isNonaffiliated=false&search_type=-1&query1=Species%2BRecognition&order=desc&&fq=dc.project.title_filter%3ANSFC%5C%5BU1602264%5C%5D"},{"jsname":"National Key R&D Program of China[2017YFC0505200]","jscount":"1","jsurl":"/simple-search?field1=all&rpp=10&accurate=false&advanced=false&sort_by=2&isNonaffiliated=false&search_type=-1&query1=Species%2BRecognition&order=desc&&fq=dc.project.title_filter%3ANational%5C+Key%5C+R%5C%26D%5C+Program%5C+of%5C+China%5C%5B2017YFC0505200%5C%5D"},{"jsname":"lastIndexed","jscount":"2025-03-06"}],"资助项目","dc.project.title_filter")'>
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Anti-arthritis effects of (E)-2,4-bis(p-hydroxyphenyl)-2-butenal through inhibition of STAT3 pathway
期刊论文
出版物, 3111, 期号: 0, 页码: 1-50
作者:
Jung Ok Ban
;
Dae Hwan Kim
;
Hee Pom Lee
;
Chul Ju Hwang
;
Jung-Hyun Shim
;
Dae Joong Kim
;
Tae Myoung Kim
;
Heon Sang Jeong
;
Seong Su Nah
;
Hanyong Chen
;
Zigang Dong
;
Young Wan Ham
;
Youngsoo Kim
;
Sang-Bae Han
;
Jin Tae Hong
Adobe PDF(1327Kb)
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浏览/下载：273/3
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提交时间：2017/07/24
Boletes clarified
期刊论文
出版物, 3111, 期号: 0, 页码: 1-38
作者:
David Arora
;
Jonathan L. Frank
Adobe PDF(1003Kb)
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浏览/下载：334/1
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提交时间：2017/07/24
Appendiculati
Boletaceae
Butter Boletes
Butyriboletus
Molecular phylogenetics
New Genus
New Species
Taxonomy
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
作者:
Dinah Qutob
;
Jennifer Tedman-Jones
;
Mark Gijzen
Adobe PDF(152Kb)
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浏览/下载：198/2
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提交时间：2017/07/24
Increased Catalytic Efficiency following Gene Fusion of Bifunctional MethionineSulfoxide Reductase Enzymes from Shewanella oneidensis
期刊论文
Biochemistry, 3111, 页码: 1—9
作者:
C.B. Li
;
D.M. Zhang
;
S. Ge
;
D.Y. Hong
Adobe PDF(436Kb)
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浏览/下载：221/1
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提交时间：2017/07/19
Bioengineering of Crops for Biofuels and Bioenergy
期刊论文
Energy Plantation Demonstration Project Center and Biotechnology Laboratory, 3111, 期号: 0, 页码: 1—16
作者:
Ashwani Kumar
Adobe PDF(917Kb)
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浏览/下载：194/1
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提交时间：2017/07/24
Data Analysisin Vegetation Ecology
期刊论文
出版物, 3111, 期号: 0, 页码: 1-297
作者:
Otto Wildi
Adobe PDF(3432Kb)
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浏览/下载：224/2
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提交时间：2017/07/24
Effects of CO-RM2 on LPS-induced vascular cell adhesion molecule-1 expression and leukocyte adhesion in human rheumatoid synovial fibroblasts
期刊论文
出版物, 3111, 期号: 0, 页码: 1-44
作者:
Pei-Ling Chi
;
Yu-Chen Chuang
;
Yu-Wen Chen
;
Chih-Chung Lin
;
Li-Der Hsiao
;
Chuen-Mao Yang
Adobe PDF(1319Kb)
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浏览/下载：269/1
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提交时间：2017/07/24
Carbon Monoxide
Lipopolysaccharide
Vcam-1
Leukocyte Adhesion
High species richness in the lichen genus Peltigera (Ascomycota, Lecanoromycetes): 34 species in the dolichorhizoid and scabrosoid clades of section Polydactylon, including 24 new to science
期刊论文
PERSOONIA, 2023, 卷号: 51, 页码: 1-88
作者:
Magain,N.
;
Miadlikowska,J.
;
Goffinet,B.
;
Goward,T.
;
Pardo-De la Hoz,C. J.
;
Juriado,I.
;
Simon,A.
;
Mercado-Diaz,J. A.
;
Barlow,T.
;
Moncada,B.
;
Luecking,R.
;
Spielmann,A.
;
Canez,L.
;
Wang,L. S.
;
Nelson,P.
;
Wheeler,T.
;
Lutzoni,F.
;
Serusiaux,E.
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Adobe PDF(75855Kb)
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浏览/下载：43/4
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提交时间：2024/07/17
cryptic species
identification key
new taxa
Peltigerales species delimitation
INTERNAL TRANSCRIBED SPACER
BRITISH-COLUMBIA
PHYLOGENETIC REVISION
FORMING ASCOMYCOTA
NITROGEN-FIXATION
LARGE SUBUNIT
RECENT ORIGIN
DELIMITATION
FUNGI
DIVERSITY
A fifty-locus phylogenetic analysis provides deep insights into the phylogeny of Tricholoma (Tricholomataceae, Agaricales)
期刊论文
PERSOONIA, 2023, 卷号: 50, 页码: 1-26
作者:
Ding,X. X.
;
Xu,X.
;
Kost,G.
;
Cui,Y. Y.
;
Wang,P. M.
;
Yang,Z. L.
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Adobe PDF(891Kb)
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浏览/下载：75/8
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提交时间：2024/07/17
ectomycorrhizal fungi
new sections
new subgenus
systematics
taxonomy
SECT. GENUINA AGARICALES
ECTOMYCORRHIZAL FUNGI
MONOTROPOIDEAE ERICACEAE
SPECIES DELIMITATION
MOLECULAR PHYLOGENY
GENETIC DIVERSITY
MATSUTAKE
SPECIFICITY
SEQUENCES
INFERENCE
An updated classification for the hyper-diverse genus Corydalis (Papaveraceae: Fumarioideae) based on phylogenomic and morphological evidence
期刊论文
JOURNAL OF INTEGRATIVE PLANT BIOLOGY, 2023
作者:
Chen,Jun-Tong
;
Liden,Magnus
;
Huang,Xian-Han
;
Zhang,Liang
;
Zhang,Xin-Jian
;
Kuang,Tian-Hui
;
Landis,Jacob B.
;
Wang,Dong
;
Deng,Tao
;
Sun,Hang
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Adobe PDF(9264Kb)
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浏览/下载：146/20
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提交时间：2024/07/10
character evolution
Corydalis
genome skimming
Papaveraceae
phylogeny
FUMARIACEAE
EVOLUTIONARY
HIMALAYA
HUBEI
