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| 1 | Major clades and a revised classification of Magnolia and Magnoliaceae based on whole plastid genome sequences via genome skimming显示文摘With more than 300 species,the Magnoliaceae family represents a major Magnolid lineage that is disjunctly distibuted in Asia and the New World,.The classifcation of Magnolia s.L.has been highly controversial among taxonomists,varying from one genus with several subgenera,sections,and subsections to several(up to 16)genera.We conducted a comprehensive phylogenetic study of Magnoliaceae on the basis of sequences of the complete chloroplast genomes with a broad jaxon sampling of 86 species.The phylogenetic analyses strongly support 15 major clades within Magnolia si.due to the non-monophyly of subgen.Mgnolia,the previous subgeneric treatment that recognizes three subgenera,is not supported.Based on the phylogenetic,morphological,and geographic evidence,we recognize two subfamilies in Magollaceae:Liriodendroideae and Magnolioideae,each with one genus,Liriodendron and Magnolla,respectively.Magnolla Is herein lassfed into 15 sections:sects.Mognolia,Manglietia,Micheila,willimia,Gynopodium,Kmerla,Maingola,Oyama,Rytidospermum,Splendentes,Talouma,Tulparla,Macophylla,Tllpastrum,and Yulanla. | Yu-Bing Wang Bin-Bin Liu Ze-Long Nie Hong-Feng Chen Fa-Ju Chen Richard B.Figlar Jun Wen | 2020 | Journal of Systematics and Evolution2020，58，5： | 6 |
| 2 | Plastome phylogenomic insights into the Sino-Japanese biogeography of Diabelia(Caprifoliaceae)显示文摘Understanding the causes of the Sino-Japanese disjunctions in plant taxa has been a central question in eastern Asian biogeography,with vicariance or long-distance dispersal often invoked to explain such patterns.Diabelia Landrein(Caprifoliaceae;Linnaeoideae)comprises four shrubby species with a Sino-Japanese disjunct distribution.The species diversification time within Diabelia,covering a long geological history of the formation process of the Sino-Japanese flora,dated back to the middle Oligocene,therefore,Diabelia would be an ideal model to elucidate the biogeographic patterns of Sino-Japanese disjunctions with climate fluctuation.In this study,we analyzed complete plastome sequence data for 28 individuals representing all four species of Diabelia.These 28 plastomes were found to be highly similar in overall size(156243-157578 bp),structure,gene order,and content.Our phylogenomic analysis of the plastomes supported a close relationship between Diabelia ionostachya(Nakai)Landrein&R.L.Barrett var.wenzhouensis(S.L.Zhou ex Landrein)Landrein from eastern China and Diabelia spathulata(Siebold&Zucc.)Landrein var.spathulata from Japan.Diabelia serrata(Siebold&Zucc.)Landrein was identified as sister to a population of Diabelia sanguinea(Makino)Landrein from Tochigi in central Japan and D.spathulata Landrein,from Toyama,central Japan.Most Diabelia lineages were estimated to have differentiated 8-28 Mya.Our results indicate that two independent vicariance events could explain the disjunction between Japan and Korea in the mid to late Miocene,and between Zhejiang and Japan in the early Miocene. | Hong-Xin Wang Michael J.Moore Russell L.Barrett Sven Landrein Shota Sakaguchi Masayuki Maki Jun Wen Hua-Feng Wang | 2020 | Journal of Systematics and Evolution2020，58，6： | 3 |
| 3 | Animal-mediated long-distance dispersals and migrations shaping the intercontinental disjunctions of Celastrus(Celastraceae)among five continents显示文摘The mechanisms underlying the origin,evolution,and distributional patterns of organisms are a major focus of biogeography.Vicariance and long-distance dispersal(LDD)are two important explanations for disjunctive distribution patterns among lineages.In-depth biogeographic studies of taxa that exhibit wide-ranging disjunctions can provide valuable information for addressing the relative importance of these biogeographic mechanisms.The genus Celastrus contains ca.30 species that are disjunctly distributed in five continents of both the Northern and Southern Hemispheres,providing an excellent system for historical biogeographic analyses.Here,we used sequence data from five markers(nuclear external transcribed spacer and internal transcribed spacer,and plastid psbA-trnH,rpl16,and trnL-F)to reconstruct the phylogeny of Celastrus and investigate its phylogenetic relationships with Tripterygium,estimate clade divergence times using the fossil-calibrated method,and infer its ancestral distribution range.Celastrus and Tripterygium were each supported as monophyletic.The morphology-based classification systems were not supported by the phylogenetic results.The divergence time between Celastrus and Tripterygium was estimated to be 26.22 Ma(95%highest posterior density:24.46-28.17 Ma),and the diversification of Celastrus were suggested to be linked to global warming events during the Miocene.Celastrus was suggested to have a tropical Asian origin,and dispersed to Central and South America,North America,Oceania,and Madagascar at different periods,most probably through LDD.Birds may have facilitated transoceanic migrations of Celastrus because of its bicolored fruits,which contain red and fleshy arils.Our results highlight the importance of key morphological innovations and animal-mediated dispersals for the rapid diversification of plant lineages across vast distributional ranges. | Yi-Xuan Zhu Feng-Wei Lei Ling Tong Xian-Yun Mu Jun Wen Zhi-Xiang Zhang | 2020 | Journal of Systematics and Evolution2020，58，6： | 1 |
| 4 | 薹草属少花薹草组(莎草科)的果囊形态及其系统学意义显示文摘用扫描电镜观察了少花薹草组Carex sect. Paniceae (莎草科) 26种3变种的果囊形态和微形态特征。结果表明:(1)果囊形状(喙除外)为倒卵球形、椭球形或卵球形,均为钝三棱状,果囊长度为1.99~7.27 mm,喙多弯曲(仅1种C. striatula果囊的喙直立),喙急缩或渐缩,喙长与果囊长度的比值为1/8~1/2,表皮细胞多明显隆起,极少数隆起不明显,且多数性状种内保持稳定;(2)喙口形态分斜截、平截、微二齿和二齿4类,且在种内有变异,如C. arakiana、线柄薹草C. filipes、丝柄薹草C. rouyana、C. purpurifera;(3)可根据果囊长度和喙的收缩情况区分部分近缘种,如线柄薹草与少囊薹草C. egena、浙江薹草C. zhejiangensis与显舌薹草C. macroglossa;(4)果囊长度、喙长与果囊长度的比值在sect. Paniceae s.s.与sect. Laxiflorae 2组间有显著差异,对两组的界定有一定价值;(5)被视为组或亚属重要分类性状的果囊横切形状(三棱状或双凸状)在界定少囊薹草组与相关组时无意义,果囊形态对界定少花薹草组有重要的系统学意义。 | 鲁益飞 刘永娣 郑子洪 何芳 褚文珂 金水虎 金孝锋 | 2022 | 浙江大学学报(理学版)2022，49，6： | 0 |
| 5 | 薹草属少花薹草组(莎草科)小坚果形态和微形态及其分类学意义显示文摘利用扫描电镜对少花薹草组(Carex sect.Paniceae)27种及4变种(东亚14种4变种,北美13种)小坚果形态与微形态特征进行比较观察。结果表明(:1)所有材料小坚果的形状为倒卵球形和钝三棱状,组内很一致,长度为1.53~3.59 mm,同种不同居群个体差异不显著(P>0.05)。(2)表皮细胞一般为五至七边形,偶有四边形或八边形,丝柄薹草(C.rouyana)不同个体间有变异;垂周璧式样直或微波状;硅质台平,偶有凹或略凸,具1个中心体,C.filipes var.kuzakaiensis和C.filipes var.tremula中偶见2个中心体,无卫星体,这些性状种内稳定。(3)利用表皮细胞形状、硅质台凹凸情况和中心体个数对于区分近似种具有价值,如白马薹草(C.baimaensis)和线柄薹草(C.filipes),且可以区分一些种下等级,如线柄薹草及其变种var.kuzakaiensis、var.oligostachys和var.tremula。(4)sect.Paniceae s.s.和sect.Laxiflorae小坚果形态和微形态上具有较高一致性,具有重要分类学意义。 | 何芳 鲁益飞 刘永娣 褚文珂 金孝锋 | 2023 | 植物研究2023，43，1： | 0 |
| 6 | In memory of Professor Tang Yan-Cheng: New perspectives in systematic and evolutionary biology显示文摘In China,three institutes for botanical research were established in the 1920s,namely the Department of Botany,Blological Laboratory of the Science Society of China(1922,Nanjing),the Fan Memorial Institute of Biology(1928,Peiping),and the Institute of Botany,Peiping Academy。Sciences(1929,Peiping).Since then,plant taxonomy,plant systematics,and phytogeography have advanced and prospered as scientific disciplines in China.Among the great botanists who studied at those institutes,and at others that were established over the following 100 years,was Prof.Tang(surname)Yan-Cheng(given name)(汤彦承,abbreviated Y.C.Tang)(7 July 1926-6 August 2016)Professor Tang was a well-known and highly respected plant taxonomist and an influential professor at the Institute of Botany,Chinese Academy of Sciences,Beiling.Prof.Tang played a pivotal role in leading taxonommic/systematic research in China from the 19705 into the 19905.He not only provided new insights into the Chinese flora. | | 2020 | Journal of Systematics and Evolution2020，58，5： | 0 |
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