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植物分类学报
植物分类学报

陈之端

双月刊

1674-4918

jse@ibcas.ac.cn

010-62836132，62836572

100093

北京香山南辛村20号中科院植物所内

植物分类学报/Journal Journal of Systematics and EvolutionCSCD北大核心CSTPCDSCI
查看更多>>《植物分类学报》于 1951 年创办。其前身为以下四种刊物：《静生生物调查所汇报》、《国立北平研究院植物学研究所丛刊》、《国立中央研究院植物汇报》、《中国科学社生物研究所植物部论文丛刊》。《植物分类学报》是我国生物学科历史最悠久的核心期刊，代表了我国植物分类学领域的最高学术水平，在国内外有深远的影响。所刊登的内容是生命科学各学科及农业、林业、医药、轻工及环境保护(包括生物多样性和保护生物学研究)和资源开发利用等行业有关学科的基础。《植物分类学报》是从事这些学科工作的必备参考刊物。
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    The Bryophyte Phylogeny Group:A revised familial classification system based on plastid phylogenomic data

    Yun-Feng LiLian LuoYang LiuQiang He...
    577-588页
    查看更多>>摘要：Bryophytes,a monophyletic group comprising three major lineages,diversified soon after the terrestrialization of land plants.However,their internal phylogenetic relationships remain controversial.In this study,we reconstructed the ordinal and familial phylogeny of bryophytes using the largest plastid data set to date,including 549 taxa that represent almost all known orders and two-thirds of families.The strongly supported phylogenetic inference enabled us to propose in mosses seven newly segregated families,that is,Baldwiniellaceae,Calyptrochaetaceae,Ctenidiaceae,Herpetineuraceae,Isodrepaniaceae,Pseudotaxiphyllaceae,and Rozeaceae,and one reduced family,that is,Climaciaceae.We also transferred the liverwort family Calyculariaceae from Fossombroniales to Pelliales.Recent advancements in molecular phylogeny have revolutionized bryophyte classification,tending to be more fragmental.Hence,we further propose a revised familial classification system for bryophytes that includes 45 orders and 142 families in mosses,23 orders and 85 families in liverworts,and five orders and five families in homworts.
      原文链接:
    • 万方数据
    • 维普

    A cytosystematic study of the Dianthus virgineus complex(Caryophyllaceae)in the Central Mediterranean

    Jacopo FranzoniGiovanni AstutiGianluigi BacchettaGiulio Barone...
    589-602页
    查看更多>>摘要：European wild carnations(Dianthus)are represented by a high number of taxa organized in unresolved taxonomies.In particular,taxa belonging to the Dianthus virgineus L.complex in the Central Mediterranean have been delimited mainly with qualitative morphological data and still await quantitative investigations,which are vital to understand boundaries and relations among plant diversity groups.Here,we examine the phenotypic features of nuclear genome organization testing for species boundaries in this complex.We have studied the chromosome number,the total haploid length(THL),and the relative genome size(RGS)in 122 populations belonging to 25 out of 33 taxa of the complex.All the studied populations have 2n=2x=30 chromosomes,and the THL ranges from 14.09 to 20.71 μm.Genome size estimations support the absence of polyploidization events,but show a certain degree of variation(0.318-0.423 arbitrary units).The RGS variation is not in agreement with current taxonomic treatment,but rather shows a geographical pattern,with higher values in Sicily and Sardinia.No correlation between the THL and the RGS was detected,possibly due to the stable chromosome number and the small size of chromosomes.A number of evolutionary unique groups lower than the number of currently accepted taxa may be hypothesized.
      原文链接:
    • 万方数据
    • 维普

    Spatial patterns and drivers of native plant diversity in Hainan,China

    Guo-Qing WangRosa A.SchersonDiego VeraYun-Hao Bai...
    603-620页
    查看更多>>摘要：Hainan Island has the most extensive and well-preserved tropical forests in China.With rapid economic development of Hainan,biodiversity is increasingly at risk.Determining the spatial patterns of plant diversity in Hainan and explaining the drivers behind plant diversity are important considerations in assessing and maximizing the effectiveness of national parks,such as the newly designated Hainan Rainforest National Park.We assessed phylogenetic diversity patterns,and species richness using 106,252 georeferenced specimen records and a molecular phylogeny of 3,792 native plant species.Based on phylogenetic range-weighted turnover metrics,we divided Hainan flora into four major floristic units.The Grade of Membership model was used to further verify the four units,and to understand their boundaries and the internal structure of each floristic unit.Finally,the best combination model was used to explore the driving mechanisms underlying the division.Our results reveal that central Hainan is the most important hotspot for plant endemism and diversity,followed by the southern area.Environmental energy is the main factor determining the spatial patterns of native plant diversity on the island,and accessibility has the greatest impact on native plant diversity among social factors.We explore patterns of spatial phylogenetics and biogeography to identify potential priorities for management and conservation drivers of plant diversity patterns across Hainan,to provide the basis for the effective protection of native plant diversity and the improvement of national parks of Hainan Island.
      原文链接:
    • 万方数据
    • 维普

    Morphology,molecular phylogeny and biogeography revealed two new Pseudo-nitzschia(Bacillariophyceae)species in Chinese waters

    Biao-Biao NiuQi-Xiang ZhengYang LiuNina Lundholm...
    621-636页
    查看更多>>摘要：Pseudo-nitzschia is a group of widely distributed planktonic diatoms.Some species produce the neurotoxin domoic acid.Herein,two new Pseudo-nitzschia species were described from Chinese coastal waters and the South China Sea after combining morphological and molecular data,together with biogeographical traits.Pseudo-nitzschia punctionis sp.nov.was similar to Pseudo-nitzschia bipertita morphologically,but differed in poroid structure,which was undivided in P.punctionis but divided in two sectors in P.bipertita.This difference corresponded to the presence of two hemicompensatory base changes(HCBCs)in the secondary structure of internal transcribed spacer 2.Pseudo-nitzschia polymorpha sp.nov.was sister to Pseudo-nitzschia limii phylogenetically,but distinct by the various shapes of perforations on the valve and copula,which was supported by four HCBCs.In a metabarcoding analysis,multiple new ribotypes were identified within the two new species,and intraspecific genetic divergences were analyzed.Metabarcoding data revealed that P.punctionis had a broader temperature range(12.9-30.5℃)than P.polymorpha(22.3-30.5℃).Within the two new species,different traits were found among the amplicon sequence variants regarding temperature and biogeography,representing different microevolutionary directions under environmental selection.The two new species had different biogeographical traits when compared to their closely related species.Domoic acid was detected in strains of P.punctionis at a concentration of 13.5-17.7 fg/cell,but the toxin was not found in strains of P.polymorpha.A combination of characters based on laboratory strains and field metabarcoding data provided more data for delimiting Pseudo-nitzschia species and gave new insights into their diversity and biogeography.
      原文链接:
    • 万方数据
    • 维普

    Culturable endophytic Sordariomycetes from Rosa roxburghii:New species and lifestyles

    Hong ZhangYu-Tao MaoMing-Xia MaGuang-Can Tao...
    637-676页
    查看更多>>摘要：Rosa-associated fungi are rich in species and diverse in function,with many potential new taxa.However,only a few publications have reported Rosa-associated endophytic fungi using a combination of molecular systematics and morphology.Rosa roxburghii is an economically important source of medicine and food.We reported earlier the diversity and antimicrobial activities of the fungal endophytes of this plant,but further confirmation is needed for possible new taxa.In this study,we describe 1o novel species and two new host records isolated from healthy tissues of R.roxburghii while identifying three new combinations,all belonging to the Sordariomycetes.The new species described herein include Chaetomium rosifloricola,Chaetomium rosiradicicola,Chrysofolia fructicola,Coniella cili,Hypoxylon florendophyticum,Hypoxylon rosicaulendophyticum,Ilyonectria radicigena,Neopestalotiopsis caulicola,Neopestalotiopsis fructicola,and Seimatosporium endophyticum.Monochaetia bulbophylli,Neopestalotiopsis anacardii,and Neopestalotiopsis termitarii were introduced as new combinations,while Coniella quercicola and Hypoxylon pulicicidum were described as new host records on R.roxburghii.All the taxa have been described,illustrated,and phylogenetically analyzed,in addition to the lifestyles of each genus.Altogether,the results of this study have important implications for identifying novel endophytic fungi and developing potential applications of these fungi in the future.
      原文链接:
    • 万方数据
    • 维普

    Enhanced precipitation has driven the evolution of subtropical evergreen broad-leaved forests in eastern China since the early Miocene:Evidence from ring-cupped oaks

    Dong-Mei JinQuan YuanXi-Ling DaiGregor Kozlowski...
    677-686页
    查看更多>>摘要：Subtropical evergreen broad-leaved forest(EBLF)is the predominant vegetation type in eastern China.However,the majority of the region it covers in eastern China was an arid area during the Paleogene.The temporal history and essential factors involved in the evolution of subtropical EBLFs in eastern China remain enigmatic.Here we report on the niche evolution of Quercus section Cyclobalanopsis,which appeared in south China and Japan during the Eocene and became a dominant component of subtropical EBLFs since the Miocene in eastern Asia,using integrative analysis of occurrences,climate data and a dated phylogeny of 35 species in Cyclobalanopsis.Species within clades Cyclobalanoides,Lamellosa,and Helferiana mainly exist in the Himalaya-Hengduan region,adapting to a plateau climate,while species within the other clades mainly live in eastern China under the control of the East Asian monsoon.Reconstructed history showed that significant divergence of climatic tolerance in Cyclobalanopsis began around 19 million years ago(Ma)in the early Miocene.Simultaneously,disparities in precipitation of wettest/warmest quarter and annual precipitation were markedly enhanced in Cyclobalanopsis,especially in the recent eastern clades.During the Miocene,the marked radiation of Cyclobalanopsis and many other dominant taxa of subtropical EBLFs strongly suggest the rapid formation and expansion of subtropical EBLFs in eastern China.Our research highlights that the intensification of the East Asian monsoon and subsequent occupation of new niches by the ancient clades already present in the south may have jointly promoted the formation of subtropical EBLFs in eastern China since the early Miocene.
      原文链接:
    • 万方数据
    • 维普

    Grass pollen surface ornamentation is diverse across the phylogeny:Evidence from northern South America and the global literature

    Cai-Xia WeiPhillip E.JardineLi-Mi MaoLuke Mander...
    687-701页
    查看更多>>摘要：The grasses are one of the most diverse plant families on Earth.However,their classification and evolutionary history are obscured by their pollen stenopalynous(similar)morphology.A combination of high-resolution imaging of pollen surface ornamentation and computational analysis has previously been proposed as a promising tool to classify grass taxonomic boundaries.In this study,we test this hypothesis by studying Poaceae pollen across the phylogeny from plants collected in northern South America and also from published literature across the globe.We assessed if morphotypes that we establish using descriptive terminology are supported by computational analysis,if they vary along six(a)biotic variables and vary across the phylogeny.Based on this analysis,we constructed a reference framework for pollen surface ornamentation morphotypes.Our results showed that there is a wide variation of grass pollen surface ornamentation.We identified nine new and confirmed six known morphotypes,establishing a data set for 223 species(243 individual plant specimens)that represent 11 subfamilies.Computational analysis showed that our morphotypes are well-supported by two quantitative features of pollen sculptural elements(size and density).The specific data set and mapping of the phylogeny confirmed that pollen morphological sculpture is unrelated to(a)biotic variables and is diverse across the phylogeny.
      原文链接:
    • 万方数据
    • 维普

    Continuous genetic adaptation to high elevations of alpine bamboos in the Hengduan Mountains,Southwest China

    Li-Ying LuoGui-Hua JinPeng-Fei MaDe-Zhu Li...
    702-714页
    查看更多>>摘要：Many examples of phenotypic modifications resulting from high-elevation adaptation have been documented,however,the underlying processes responsible for these modifications and whether the continuity of the adaptation process remain elusive,particularly in plants.The alpine plants distributed along wide elevational gradients provide an ideal system to address this question.Here,we collected transcriptomes from multiple tissues of three species with different elevations(～1500,～2500,and～3600 m in the Hengduan Mountains,Southwest China)in two genera Fargesia and Yushania of alpine bamboos,respectively,and conducted evolutionary and expressional analyses.Results showed that high-elevation adaptation emerged earlier in the evolutionary history of both genera and evolved continuously as the elevation increased.Moreover,convergence of genetic changes was observed in the two genera,with amounts of candidate genes responsible for high-elevation adaptation identified under positive selection.Overall,our study provides an empirical example and valuable genetic resource for further investigation of high-elevation adaptation in plants and sheds new light on how plants adapting to high-elevation environments in a biodiversity hotspot.
      原文链接:
    • 万方数据
    • 维普

    Almost half of the Gymnura van Hasselt,1823 species are unknown:Phylogeographic inference as scissors for cutting the hidden Gordian knot and clarify their conservation status

    Suellen M.GalesKristene T.ParsonsEllen E.BiesackJonathan Ready...
    715-738页
    查看更多>>摘要：Gymnurid rays are found in tropical,subtropical,and temperate regions around the world,where they are associated with sandy or muddy bottoms in coastal areas,being easily distinguished from other rays by the width of the disc.In recent years,the systematics of this family have been revised extensively.However,there has been no comprehensive molecular review of the family based on an adequate sample of species and localities,which may have obscured the presence of distinct evolutionary lineages.The present study was based on samples of 12 of the 13 valid species of the genus Gymnura,which were used for a multilocus reconstruction of the evolutionary history of the family Gymnuridae.Our results indicate the existence of several cryptic gymnurid lineages,within the species Gymnura micrura,Gymnura Iessae,Gymnura altavela,and Gymnura poecilura.Also,we indicate that only half of the species that compose the genus are known,as well their conservation status.The analyses also indicate that the gymnurids originated during the Paleocene,with events of dispersal and vicariance occurring through the formation of oceanographic barriers,and species diversification peaking during the Oligocene and Miocene.The results of the present study reinforce the need for a comprehensive revision of the systematics of the family,in particular,the widely distributed species that are considered valid taxa,but may,in fact,represent different cryptic species.The inadequate classification of this cryptic diversity may have negative implications for the development of effective conservation measures.
      原文链接:
    • 万方数据
    • 维普

    Speciation and conservation genetic assessment of two endangered cycad species

    Xiu-Yan FengYi-Qing GongKhang Sinh NguyenHiep Tien Nguyen...
    739-757页
    查看更多>>摘要：Understanding the driving forces of speciation is a central question in evolutionary biology.Cycas bifida(Dyer)K.D.Hill and Cycas micholitzii Dyer are two morphologically similar Cycas(Cycadaceae)species with deeply pectinate megasporophylls and dichotomously divided leaflets.Geographically,they are isolated by the Red River Fault Zone(RRFZ),which acts as a biogeographical barrier for many Cycas species.In this study,we investigated the divergence,genetic diversity,genetic structure,and demographic history of C.bifida and C.micholitzii to uncover the speciation mechanisms for the two endangered species.Results revealed high historical gene flow but low contemporary gene flow between the two species,with a deep divergence occurring in the Late Miocene.The long-term geographical isolation and ecological niche differentiation were identified as important factors in driving the divergence of the two species,supported by significant isolation by distance testing,barrier analysis,and niche consistency detection.Geographical isolation by the RRFZ played a pivotal role in facilitating their divergence by constraining gene flow.Conservation genetic analyses indicated high genetic diversity within both species,coupled with disparate responses to Pleistocene climate fluctuations:C.micholitzii experienced population expansion,while C.bifida displayed a mild bottleneck effect.To ensure the protection and long-term sustainability of two threatened species,relevant conservation guidelines were proposed based on the assessment of their genetic diversity and structure.This study furnishes valuable insights into the mechanisms underpinning species divergence and delivers actionable recommendations for cycad conservation.
      原文链接:
    • 万方数据
    • 维普