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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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葛佳 [2]
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GST, P < 0.05) were exhibited by this species. The SAMOVA revealed seven diverging groups of related chlorotypes, six of them had distinct nonoverlapping geographical ranges: one in the northeast comprising 10 populations, a second with a southeast distribution comprising 22 populations, and the remaning four groups comprising 15 populations located in the west part of the species’ range along different river valleys. The genetic clustering of populations into three regions was also supported by analysis of molecular variance, which showed that most genetic variation (82.43%) was found among these three regions. Two clusters were distinguished by both phylogenetic analysis and genealogical analysis of chlorotypes, one consisting of chlorotypes from the western region and the second consisting of those from the eastern region. Significant genetic differences between the two regions might be attributed to vicariance and restricted gene flow, and this vicariance could be explained by the physical environmental heterogeneity on each side of the Tanaka-Kaiyong Line. Following the uplift of the Tibetan Plateau, the reorganization of the major river drainages was primarily caused by river separation and capture events. These historical events could change the distribution of S. davidii from fragmented to continuous (Upper/Lower Jinshajiang and Yalongjiang/Daduhe), and from continuous to fragmented (Nujiang and Jinshajiang/Honghe). However, spatial and temporal patterns of phylogeographic divergence are strongly associated with historical disjunction rather than modern drainage connections. Moreover, the following north-south split in the eastern region and effective isolation with their genetic diversity were essentially modelled by genetic drift. The higher chlorotype richness and genetic divergence for populations in western region compared with other two regions suggests that there were multipe refugia or in situ survival of S. davidii in the Himalayan-Hengduan Mountain region. Fixation of chlorotypes in the northeastern region and near fixation in the southeastern region suggest a recent colonization of these areas. We further found that this species underwent past range expansion around 37-303 thousand years ago (kya). The southeastern populations likely experienced a demographic expansion via unidirectional gene flow along rivers, while northeastern populations underwent a more northward expansion, both from initial populations (s) (21, 22, 23) preserved on eastern refugia (Jinshajiang). This process might have been accompanied with a series of founder effects or bottlenecks making populations genetically impoverished. 3. Phylogeographic analysisbased on nuclear sequence，We sequenced the nuclear (ncpGS) region in all populations sampled, recovering 23 nuclear haplotypes. Compared to cpDNA, both NST (0.470) and GST (0.338) were relatively lower, but NST was also significantly larger than GST. 37.10% of the total variation was distributed among regions which was much lower than that shown by chlorotypes. Thus, more extensive distribution of nuclear haplotypes was exhibited across the geographical range instead of the strong population subdivision observed in chlorotypes. Similarly to the chloroplast data, we found that genetic differentiation of nDNA was positively correlated with the geographical distance, but the increase in the geographical distance between populations did not increase the genetic differentiation of nDNA as rapidly as that of cpDNA. These contrasting levels between the chloroplast and nuclear genomes of S. davidii are likely due to limited gene flow of cpDNA by seeds vs. the extensive gene flow of nDNA by wind-mediated pollen in the population history. We also determined from nuclear markers that haplotype diversity was reduced in the southeastern and northeastern regions due to the loss of rare haplotypes in western region. This reduction of gene diversity is also a signature of founder events or recent bottleneck during post-glacial colonization. However, nuclear diversity within populations remains high. This provides evidence that regionally pollen flow might be sufficiently high to blur the genetic identity of founder populations over a reasonably large spatial scale.3. Relationships among three varieties，The phylogenetic analysis identified two phylogroups of chlorotypes, corresponding to S. davidii var. davidii and var. chuansinesis. The former was distinguished by the abscence of predonminant nuclear haplotype H1 of the latter. The monophyletic group of chlorotypes in var. davidii and var. liangshanesis showed their relatively close relationship. And their genetic divergence from the third variety appears to be relative to their slight morphological difference in leaf size and the divergent environmental niche spaces they occupy. Thus, the observed differences in morphological characters between var. chuansinesis and other two varieties can be explained by the seed dispersal limitation illustrated above (as inferred by geographical separation) and by environmental heterogeneity (as inferred by precipitation or elevation) or by a combination of both. After all, the geological changes, drainage reorganization, and floristic differences following the Himalayan uplift have been suggested to affect the genetic structure of S. davidii. These results provide new insights into the phylogeographic pattern of plants in China. In addition, the unique population genetic structure found in S. davidii has provided important insights into the evolutionary history of this species. The genetic profile uncovered in this study is also critical for its conservation management. Our study has uncovered the existence of at least two ‘evolutionary significant units’ independent units within S. davidii, corresponding to var. davidii from eastern region and var. chuansinensis from western region. The conservation efforts should first focus on most western populations and on the southeastern ones exhibiting high levels of genetic diversity, while the genetically homogeneous northeastern populations located in the degraded Loess Plateau should require much greater conservation 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Taxus wallichiana complex represents an old relict conifer lineage that survived through the Tertiary. It is currently distributed in the mountain forests in South and Southwest China south of the Qinling Mountains. In the present study, we explored phylogeography of the complex by using two chloroplast DNA regions, one nuclear ribosomal DNA spacer region and eight microsatellite (SSR) loci. The main conclusions can be summarized as follows:1. Phylogeographic pattern based on chloroplast haplotypes，There were 11 cpDNA haplotypes identified in the T. wallichiana complex The complex showed a high level of genetic diversity and obvious genetic differentiation. The 44 sampled populations showed obvious genetic structure, which could be divided into five groups, namely the Huanan group, the Daba group, the Emei group, the Yunnan group and the Qinling group. There was extremely high genetic differentiation among groups, but not significant within group. The divergence times of the five lineages, estimated using average mutation rates of trnL-trnF, fell in the Pliocene. 2. Phylogeographic patterns based on ITS sequences，These included 38 unique ‘haplotypes’ based on ITS data. Their analysis showed that the T. wallichiana complex possessed a high genetic diversity. These populations could be divided into four groups, namely the Huanan group, the Daba/Emei group, the Yunnan group and the Qinling group. Based on all results, it appears that the major lineages constituting the T. wallichiana complex have arisen before Quaternary glaciation cycles, and may have survived isolated in different refugia. During interglacial periods some lineages appear to have come in contact and hybridizedbut other lineages merged forming populations with mixed haplotypes without signs of hybridization. The present-day phylogeographical distribution pattern of the T. wallichiana complex might thus be the result of repeated expansion / contractions of populations during interglacial / glacial cycles.3. Population genetic analysis using microsatellite (SSR) markers，Eight SSR loci were used for population genetic analysis on the T. wallichiana complex. A lower level of genetic diversity at the population level and high genetic differentiation among population was detected. The results of structure analysis were similar to those on the ITS data, dividing the populations into four groups (lineages). According to the results here, it was deduced that each of the 4 lineages of the T. wallichiana complex may possessed respective glacial refugia, and some lineages (such as the Qinling and Huanan lineage) might have survived in multiple refugia in the Quaternay glaciations. The present distribution pattern of this complex was likely influenced by the uplift of the QTP and Quaternary glaciation.","jscount":"1","jsurl":"/simple-search?field1=all&rpp=10&accurate=false&advanced=false&fq=location.comm.id%3A1&sort_by=2&isNonaffiliated=false&search_type=-1&query1=biological%2Bresources&order=desc&&fq=dc.project.title_filter%3AThe%5C+Taxus%5C+wallichiana%5C+complex%5C+represents%5C+an%5C+old%5C+relict%5C+conifer%5C+lineage%5C+that%5C+survived%5C+through%5C+the%5C+Tertiary.%5C+It%5C+is%5C+currently%5C+distributed%5C+in%5C+the%5C+mountain%5C+forests%5C+in%5C+South%5C+and%5C+Southwest%5C+China%5C+south%5C+of%5C+the%5C+Qinling%5C+Mountains.%C2%A0In%5C+the%5C+present%5C+study%2C%5C+we%5C+explored%5C+phylogeography%5C+of%5C+the%5C+complex%5C+by%5C+using%5C+two%5C+chloroplast%5C+DNA%5C+regions%2C%5C+one%5C+nuclear%5C+ribosomal%5C+DNA%5C+spacer%5C+region%5C+and%5C+eight%5C+microsatellite%5C+%5C%28SSR%5C%29%5C+loci.%5C+The%5C+main%5C+conclusions%5C+can%5C+be%5C+summarized%5C+as%5C+follows%5C%3A1.%5C+Phylogeographic%5C+pattern%5C+based%5C+on%5C+chloroplast%5C+haplotypes%EF%BC%8CThere%5C+were%5C+11%5C+cpDNA%5C+haplotypes%5C+identified%5C+in%5C+the%5C+T.%5C+wallichiana%5C+complex%5C+The%5C+complex%5C+showed%5C+a%5C+high%5C+level%5C+of%5C+genetic%5C+diversity%5C+and%5C+obvious%5C+genetic%5C+differentiation.%5C+The%5C+44%5C+sampled%5C+populations%5C+showed%5C+obvious%5C+genetic%5C+structure%2C%5C+which%5C+could%5C+be%5C+divided%5C+into%5C+five%5C+groups%2C%5C+namely%5C+the%5C+Huanan%5C+group%2C%5C+the%5C+Daba%5C+group%2C%5C+the%5C+Emei%5C+group%2C%5C+the%5C+Yunnan%5C+group%5C+and%5C+the%5C+Qinling%5C+group.%5C+There%5C+was%5C+extremely%5C+high%5C+genetic%5C+differentiation%5C+among%5C+groups%2C%5C+but%5C+not%5C+significant%5C+within%5C+group.%5C+The%5C+divergence%5C+times%5C+of%5C+the%5C+five%5C+lineages%2C%5C+estimated%5C+using%5C+average%5C+mutation%5C+rates%5C+of%5C+trnL%5C-trnF%2C%5C+fell%5C+in%5C+the%5C+Pliocene.%C2%A02.%5C+Phylogeographic%5C+patterns%5C+based%5C+on%5C+ITS%5C+sequences%EF%BC%8CThese%5C+included%5C+38%5C+unique%5C+%E2%80%98haplotypes%E2%80%99%5C+based%5C+on%5C+ITS%5C+data.%5C+Their%5C+analysis%5C+showed%5C+that%5C+the%5C+T.%5C+wallichiana%5C+complex%5C+possessed%5C+a%5C+high%5C+genetic%5C+diversity.%C2%A0These%5C+populations%5C+could%5C+be%5C+divided%5C+into%5C+four%5C+groups%2C%5C+namely%5C+the%5C+Huanan%5C+group%2C%5C+the%5C+Daba%5C%2FEmei%5C+group%2C%5C+the%5C+Yunnan%5C+group%5C+and%5C+the%5C+Qinling%5C+group.%5C+Based%5C+on%5C+all%5C+results%2C%5C+it%5C+appears%5C+that%5C+the%5C+major%5C+lineages%5C+constituting%5C+the%5C+T.%5C+wallichiana%5C+complex%5C+have%5C+arisen%5C+before%5C+Quaternary%5C+glaciation%5C+cycles%2C%5C+and%5C+may%5C+have%5C+survived%5C+isolated%5C+in%5C+different%5C+refugia.%5C+During%5C+interglacial%5C+periods%5C+some%5C+lineages%5C+appear%5C+to%5C+have%5C+come%5C+in%5C+contact%5C+and%5C+hybridizedbut%5C+other%5C+lineages%5C+merged%5C+forming%5C+populations%5C+with%5C+mixed%5C+haplotypes%5C+without%5C+signs%5C+of%5C+hybridization.%5C+The%5C+present%5C-day%5C+phylogeographical%5C+distribution%5C+pattern%5C+of%5C+the%5C+T.%5C+wallichiana%5C+complex%5C+might%5C+thus%5C+be%5C+the%5C+result%5C+of%5C+repeated%5C+expansion%5C+%5C%2F%5C+contractions%5C+of%5C+populations%5C+during%5C+interglacial%5C+%5C%2F%5C+glacial%5C+cycles.3.%5C+Population%5C+genetic%5C+analysis%5C+using%5C+microsatellite%5C+%5C%28SSR%5C%29%5C+markers%EF%BC%8CEight%5C+SSR%5C+loci%5C+were%5C+used%5C+for%5C+population%5C+genetic%5C+analysis%5C+on%5C+the%5C+T.%5C+wallichiana%5C+complex.%5C+A%5C+lower%5C+level%5C+of%5C+genetic%5C+diversity%5C+at%5C+the%5C+population%5C+level%5C+and%5C+high%5C+genetic%5C+differentiation%5C+among%5C+population%5C+was%5C+detected.%5C+The%5C+results%5C+of%5C+structure%5C+analysis%5C+were%5C+similar%5C+to%5C+those%5C+on%5C+the%5C+ITS%5C+data%2C%5C+dividing%5C+the%5C+populations%5C+into%5C+four%5C+groups%5C+%5C%28lineages%5C%29.%C2%A0According%5C+to%5C+the%5C+results%5C+here%2C%5C+it%5C+was%5C+deduced%5C+that%5C+each%5C+of%5C+the%5C+4%5C+lineages%5C+of%5C+the%5C+T.%5C+wallichiana%5C+complex%5C+may%5C+possessed%5C+respective%5C+glacial%5C+refugia%2C%5C+and%5C+some%5C+lineages%5C+%5C%28such%5C+as%5C+the%5C+Qinling%5C+and%5C+Huanan%5C+lineage%5C%29%5C+might%5C+have%5C+survived%5C+in%5C+multiple%5C+refugia%5C+in%5C+the%5C+Quaternay%5C+glaciations.%5C+The%5C+present%5C+distribution%5C+pattern%5C+of%5C+this%5C+complex%5C+was%5C+likely%5C+influenced%5C+by%5C+the%5C+uplift%5C+of%5C+the%5C+QTP%5C+and%5C+Quaternary%5C+glaciation."},{"jsname":"The chemical constituents of eight higher fungi and one medicinal plant were investigated. The fungi included Trametes corrugate, Campanella junghuhnii, Craterellus cornucopioides, Phlebia radiate, Laccaria amethystea, Hydnochaete sp., Nidula sp. and Rhodophyllus ater, which are all collected from Yunnan province, P. R. China. The leaves of Cynara scolymus L. (Artichoke) were collected from south of Vietnam. 119 compounds, including 91 different compounds and 9 new ones, have been obtained using varied chromatographic methods, and the structures of new metabolites were elucidated on the basis of extensive spectroscopic analysis including IR, UV, MS, 1D- and 2D-NMR experiments.Two unusual diterpenes (13-14) with neodolastane skeletons were isolated and identified from the culture broth of Trametes corrugate. This type of diterpene was obtained for the first time from higer fungi. A new tricyclo[6.3.1.02,5]dodecane sesquiterpene (1) was isolated from the culture broth of Campanella junghuhnii. Three new keto esters (65-67) and a series of illudine sesquiterpenes (4-10) were isolated and identified from the culture broth of the basidiomycete Craterellus cornucopioides. A new fatty acid ester (48) was isolated from the culture broth of Phlebia radiate.A new isoprenyl phenyl ether riboside (68) was isolated from culture broth of Laccaria amethystea. During our studies on chemical constituents of the culture broth of Hydnochaete sp., a conjugate lactone (71) was obtained. Preliminary biological assay showed that the lactone exhibited inhibitory activity against the11b-hydroxysteroid dehydrogenase (11β-HSD1) of human and mouse with IC50 value of 53.338 mg/mL and 95.950 mg/mL, respectively. A new guaiane-type sesquiterpene lactone (2) and a new phenolic glucoside gallate (69) were isolated and identified from the leaves of Cynara scolymus (Artichoke). A review summarized their structures, biological activities, and the producing species of naturally occurring triterpenes from higher fungi. The paper provides 433 structurally diverse compounds published between 1985~2010, and 114 references.","jscount":"1","jsurl":"/simple-search?field1=all&rpp=10&accurate=false&advanced=false&fq=location.comm.id%3A1&sort_by=2&isNonaffiliated=false&search_type=-1&query1=biological%2Bresources&order=desc&&fq=dc.project.title_filter%3AThe%5C+chemical%5C+constituents%5C+of%5C+eight%5C+higher%5C+fungi%5C+and%5C+one%5C+medicinal%5C+plant%5C+were%5C+investigated.%5C+The%5C+fungi%5C+included%5C+Trametes%5C+corrugate%2C%5C+Campanella%5C+junghuhnii%2C%5C+Craterellus%5C+cornucopioides%2C%5C+Phlebia%5C+radiate%2C%5C+Laccaria%5C+amethystea%2C%5C+Hydnochaete%5C+sp.%2C%5C+Nidula%5C+sp.%5C+and%5C+Rhodophyllus%5C+ater%2C%5C+which%5C+are%5C+all%5C+collected%5C+from%5C+Yunnan%5C+province%2C%5C+P.%5C+R.%5C+China.%5C+The%5C+leaves%5C+of%5C+Cynara%5C+scolymus%5C+L.%5C+%5C%28Artichoke%5C%29%5C+were%5C+collected%5C+from%5C+south%5C+of%5C+Vietnam.%5C+119%5C+compounds%2C%5C+including%5C+91%5C+different%5C+compounds%5C+and%5C+9%5C+new%5C+ones%2C%5C+have%5C+been%5C+obtained%5C+using%5C+varied%5C+chromatographic%5C+methods%2C%5C+and%5C+the%5C+structures%5C+of%5C+new%5C+metabolites%5C+were%5C+elucidated%5C+on%5C+the%5C+basis%5C+of%5C+extensive%5C+spectroscopic%5C+analysis%5C+including%5C+IR%2C%5C+UV%2C%5C+MS%2C%5C+1D%5C-%5C+and%5C+2D%5C-NMR%5C+experiments.Two%5C+unusual%5C+diterpenes%5C+%5C%2813%5C-14%5C%29%5C+with%5C+neodolastane%5C+skeletons%5C+were%5C+isolated%5C+and%5C+identified%5C+from%5C+the%5C+culture%5C+broth%5C+of%5C+Trametes%5C+corrugate.%5C+This%5C+type%5C+of%5C+diterpene%5C+was%5C+obtained%5C+for%5C+the%5C+first%5C+time%5C+from%5C+higer%5C+fungi.%5C+A%5C+new%5C+tricyclo%5C%5B6.3.1.02%2C5%5C%5Ddodecane%5C+sesquiterpene%5C+%5C%281%5C%29%5C+was%5C+isolated%5C+from%5C+the%5C+culture%5C+broth%5C+of%5C+Campanella%5C+junghuhnii.%5C+Three%5C+new%5C+keto%5C+esters%5C+%5C%2865%5C-67%5C%29%5C+and%5C+a%5C+series%5C+of%5C+illudine%5C+sesquiterpenes%5C+%5C%284%5C-10%5C%29%5C+were%5C+isolated%5C+and%5C+identified%5C+from%5C+the%5C+culture%5C+broth%5C+of%5C+the%5C+basidiomycete%5C+Craterellus%5C+cornucopioides.%5C+A%5C+new%5C+fatty%5C+acid%5C+ester%5C+%5C%2848%5C%29%5C+was%5C+isolated%5C+from%5C+the%5C+culture%5C+broth%5C+of%5C+Phlebia%5C+radiate.A%5C+new%5C+isoprenyl%5C+phenyl%5C+ether%5C+riboside%5C+%5C%2868%5C%29%5C+was%5C+isolated%5C+from%5C+culture%5C+broth%5C+of%5C+Laccaria%5C+amethystea.%5C+During%5C+our%5C+studies%5C+on%5C+chemical%5C+constituents%5C+of%5C+the%5C+culture%5C+broth%5C+of%5C+Hydnochaete%5C+sp.%2C%5C+a%5C+conjugate%5C+lactone%5C+%5C%2871%5C%29%5C+was%5C+obtained.%5C+Preliminary%5C+biological%5C+assay%5C+showed%5C+that%5C+the%5C+lactone%5C+exhibited%5C+inhibitory%5C+activity%5C+against%5C+the11b%5C-hydroxysteroid%5C+dehydrogenase%5C+%5C%2811%CE%B2%5C-HSD1%5C%29%5C+of%5C+human%5C+and%5C+mouse%5C+with%5C+IC50%5C+value%5C+of%5C+53.338%5C+mg%5C%2FmL%5C+and%5C+95.950%5C+mg%5C%2FmL%2C%5C+respectively.%5C+A%5C+new%5C+guaiane%5C-type%5C+sesquiterpene%5C+lactone%5C+%5C%282%5C%29%5C+and%5C+a%5C+new%5C+phenolic%5C+glucoside%5C+gallate%5C+%5C%2869%5C%29%5C+were%5C+isolated%5C+and%5C+identified%5C+from%5C+the%5C+leaves%5C+of%5C+Cynara%5C+scolymus%5C+%5C%28Artichoke%5C%29.%5C+A%5C+review%5C+summarized%5C+their%5C+structures%2C%5C+biological%5C+activities%2C%5C+and%5C+the%5C+producing%5C+species%5C+of%5C+naturally%5C+occurring%5C+triterpenes%5C+from%5C+higher%5C+fungi.%5C+The%5C+paper%5C+provides%5C+433%5C+structurally%5C+diverse%5C+compounds%5C+published%5C+between%5C+1985%5C%7E2010%2C%5C+and%5C+114%5C+references."},{"jsname":"The chemical constituents of six higher fungi including Gomphus floccosus, Marasmius maximus Hongo, Paxillus panuoides, Tylopilus felleus, Cantharellus cibarius and Grifola frondosa collected from Yunnan Province, P. R. China, and a medicinal plant Hypericum reptans, were investigated.43 Compounds including 3 new ones have been obtained by chromatographic methods, and their structures were elucidated on the basis of spectroscopic data (1D NMR, 2D NMR, MS, HR-MS, UV/Vis) in combination with single-crystal X-ray diffraction analysis.Two new furanone derivatives, (E)-3-(1,3-butadienyl)-4-(3-oxopentyl)-2(5H)-furanone (1), 3-((S,E)-3,4-dihydroxy-butylenyl)-4-((S,E)-3-hydroxy-pentenyl)-2(5H)-furanone (2) which had a large conjugated systemGomphus floccosus. The absolute configurations of 2 were determined based on the modified Moshers method after selectively protected the primary alcohol group in the 1,2-primary/secondary diol. in the structures, were isolated from the culture of the basidiomycete. A new compound based on a dibenzodioxinone skeleton was isolated from the medical plant Hypericum reptans. The plane structure and relative configurations of the new compound was elucidated by spectroscopic data and further confirmed by single-crystal X-ray diffraction.","jscount":"1","jsurl":"/simple-search?field1=all&rpp=10&accurate=false&advanced=false&fq=location.comm.id%3A1&sort_by=2&isNonaffiliated=false&search_type=-1&query1=biological%2Bresources&order=desc&&fq=dc.project.title_filter%3AThe%5C+chemical%5C+constituents%5C+of%5C+six%5C+higher%5C+fungi%5C+including%5C+Gomphus%5C+floccosus%2C%5C+Marasmius%5C+maximus%5C+Hongo%2C%5C+Paxillus%5C+panuoides%2C%5C+Tylopilus%5C+felleus%2C%5C+Cantharellus%5C+cibarius%5C+and%5C+Grifola%5C+frondosa%5C+collected%5C+from%5C+Yunnan%5C+Province%2C%5C+P.%5C+R.%5C+China%2C%5C+and%5C+a%5C+medicinal%5C+plant%5C+Hypericum%5C+reptans%2C%5C+were%5C+investigated.43%5C+Compounds%5C+including%5C+3%5C+new%5C+ones%5C+have%5C+been%5C+obtained%5C+by%5C+chromatographic%5C+methods%2C%5C+and%5C+their%5C+structures%5C+were%5C+elucidated%5C+on%5C+the%5C+basis%5C+of%5C+spectroscopic%5C+data%5C+%5C%281D%5C+NMR%2C%5C+2D%5C+NMR%2C%5C+MS%2C%5C+HR%5C-MS%2C%5C+UV%5C%2FVis%5C%29%5C+in%5C+combination%5C+with%5C+single%5C-crystal%5C+X%5C-ray%5C+diffraction%5C+analysis.Two%5C+new%5C+furanone%5C+derivatives%2C%5C+%5C%28E%5C%29%5C-3%5C-%5C%281%2C3%5C-butadienyl%5C%29%5C-4%5C-%5C%283%5C-oxopentyl%5C%29%5C-2%5C%285H%5C%29%5C-furanone%5C+%5C%281%5C%29%2C%5C+3%5C-%5C%28%5C%28S%2CE%5C%29%5C-3%2C4%5C-dihydroxy%5C-butylenyl%5C%29%5C-4%5C-%5C%28%5C%28S%2CE%5C%29%5C-3%5C-hydroxy%5C-pentenyl%5C%29%5C-2%5C%285H%5C%29%5C-furanone%5C+%5C%282%5C%29%5C+which%5C+had%5C+a%5C+large%5C+conjugated%5C+systemGomphus%5C+floccosus.%5C+The%5C+absolute%5C+configurations%5C+of%5C+2%5C+were%5C+determined%5C+based%5C+on%5C+the%5C+modified%5C+Moshers%5C+method%5C+after%5C+selectively%5C+protected%5C+the%5C+primary%5C+alcohol%5C+group%5C+in%5C+the%5C+1%2C2%5C-primary%5C%2Fsecondary%5C+diol.%5C+in%5C+the%5C+structures%2C%5C+were%5C+isolated%5C+from%5C+the%5C+culture%5C+of%5C+the%5C+basidiomycete.%5C+A%5C+new%5C+compound%5C+based%5C+on%5C+a%5C+dibenzodioxinone%5C+skeleton%5C+was%5C+isolated%5C+from%5C+the%5C+medical%5C+plant%5C+Hypericum%5C+reptans.%5C+The%5C+plane%5C+structure%5C+and%5C+relative%5C+configurations%5C+of%5C+the%5C+new%5C+compound%5C+was%5C+elucidated%5C+by%5C+spectroscopic%5C+data%5C+and%5C+further%5C+confirmed%5C+by%5C+single%5C-crystal%5C+X%5C-ray%5C+diffraction."},{"jsname":"lastIndexed","jscount":"2024-10-01"}],"资助项目","dc.project.title_filter")'>
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专题：昆明植物所硕博研究生毕业学位论文
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干热河谷特色生态修复物种筛选与农林复合系统构建
学位论文
: 中国科学院大学, 2022
作者:
赵高卷
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提交时间：2024/05/14
干热河谷，种质资源，农林复合系统，抗旱机制，生物固氮，乔灌草立体修复模式，生态恢复
dry-hot valley, germplasm resources, agroforestry system, drought resistance mechanism, biological nitrogen fixation, three-dimensional trees-shrubs-herbs restoration model, ecological restoration
三尖杉属植物生物碱成分研究和活性酯碱资源评价
学位论文
: 中国科学院大学, 2022
作者:
余光兴
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三尖杉属,种子,三尖杉生物碱,分离鉴定,酯碱资源评价
Cephalotaxus,Seeds,Cephalotaxine alkaloids,Isolation and identification,Ester alkaloids resources evaluation
迎阳报春复合群遗传标记开发和应用
学位论文
: 中国科学院大学, 2022
作者:
曾志华
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提交时间：2024/05/14
异型花柱
Heterostyly
遗传标记开发
Genetic marker development
交配系统
Mating system
表型自交综合征
Phenotypic selfing syndrome
遗传自交综合征
Genetic selfing syndrome
地衣暗亚玲孢和粉斑星点梅的微生物组研究
学位论文
: 中国科学院大学, 2022
作者:
徐海燕
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暗亚玲孢，粉斑星点梅，微生物组，微生物多样性，功能多样性
Heterodermia obscurata, Punctelia borreri, Microbiome, Microbiota diversity, Function diversity.
海菜花化学成分研究和Telekin的结构改造
学位论文
: 中国科学院大学, 2022
作者:
曾政权
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天然产物、海菜花、天名精、倍半萜内酯、结构修饰
Natural Products, Ottelia acuminata, Carpesium abrotanoides L., Sesquiterpene lactone, Structural modification
构建多组学数据分析流程用于挖掘黄草乌生物碱合成相关基因
学位论文
: 中国科学院大学, 2022
作者:
任焕幸
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二萜生物碱
Diterpenoid alkaloids
比较基因组学
Comparative genomics
权重基因共表达网络
Weighted gene co-expression network
最小生成树
Minimum spanning tree
代谢网络
Metabolic network
‘无刺光叶蔷薇’响应低温调控开花的候选基因研究
学位论文
: 中国科学院大学, 2022
作者:
蒋晓东
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食用玫瑰，‘无刺光叶蔷薇’，低温，开花，LFLC，FT
Edible rose, R. wichuraiana ‘Basye’s Thornless’, Low temperature, Flowering, LFLC, FT
系统发育在生物多样性保护中的应用-以高黎贡山北段为例
学位论文
, 2021
作者:
岳娟
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提交时间：2023/11/02
药用植物天名精化学成分及其生物活性研究
学位论文
, 2021
作者:
杨宝嘉
Adobe PDF(3875Kb)
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提交时间：2024/03/20
人工种植帚状香茶菜的化学成分及其生物活性研究
学位论文
, 2021
作者:
陈素萍
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提交时间：2024/03/20
