Journal of Systematics and Evolution最新文献

{"title":"Evolutionary targets of gene expression divergence in a complex of closely related pine species","authors":"Julia Zaborowska,&nbsp;Annika Perry,&nbsp;Stephen Cavers,&nbsp;Witold M. Wachowiak","doi":"10.1111/jse.12896","DOIUrl":"https://doi.org/10.1111/jse.12896","url":null,"abstract":"<p>The environment is a powerful selective pressure for sessile organisms, such as plants, and adaptation to the environment is particularly important for long-lived species, like trees. Despite the importance of adaptive trait variation to the survival and success of trees, the molecular basis of adaptation is still poorly understood. Gene expression patterns in three closely related, but phenotypically and ecologically divergent, pine species were analyzed to detect differentiation that may be associated with their adaptation to distinct environments. Total RNA of <i>Pinus mugo</i>, <i>Pinus uncinata</i>, and <i>Pinus sylvestris</i> samples grown under common garden conditions was used for de novo transcriptome assembly, providing a new reference dataset that includes species from the taxonomically challenging <i>P. mugo</i> complex. Gene expression profiles were found to be very similar with only 121 genes significantly diverged in any of the pairwise species comparisons. Functional annotation of these genes revealed major categories of distinctly expressed transcripts, including wood trait properties, oxidative stress response, and response to abiotic factors such as salinity, drought, and temperature. We discuss putative associations between gene expression profiles and adaptation to different environments, for example, the upregulation of genes involved in lignin biosynthesis in the species, which have adapted to mountainous regions characterized by strong winds and thick snow cover. Our study provides valid candidates for verification of the importance of the gene expression role, in addition to evidence for selection within genomic regions, in the process of ecological divergence and adaptation to higher altitudes in pine taxa.</p>","PeriodicalId":17087,"journal":{"name":"Journal of Systematics and Evolution","volume":"61 1","pages":"198-212"},"PeriodicalIF":0.0,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50116206","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Integrative taxonomy and phylogeny of leafless Vanilla orchids from the South-West Indian Ocean region reveal two new Malagasy species","authors":"Cathucia F. Andriamihaja,&nbsp;Alemao Botomanga,&nbsp;Chantal Misandeau,&nbsp;Aro V. Ramarosandratana,&nbsp;Michel Grisoni,&nbsp;Denis Da Silva,&nbsp;Thierry Pailler,&nbsp;Vololoniaina H. Jeannoda,&nbsp;Pascale Besse","doi":"10.1111/jse.12858","DOIUrl":"https://doi.org/10.1111/jse.12858","url":null,"abstract":"<p>The leafless <i>Vanilla</i> species complex from the South-West Indian Ocean (SWIO) region has long been a taxonomic challenge, due to limited patterns of morphological differentiation and an absence of variation within chloroplast sequences. This complex includes seven known morphospecies: <i>V. madagascariensis</i>, <i>V. bosseri</i>, <i>V. decaryana</i>, and <i>V. perrieri</i> endemic to Madagascar, <i>V. humblotii</i> presumed as endemic to the Comoros Archipelago, but also present in Madagascar, <i>V. roscheri</i> from the East African coast, and <i>V. phalaenopsis</i> endemic to Seychelles. A previous population genetic study using microsatellite markers allowed us to distinguish, in addition to the five recognized Malagasy taxa, two other genetic clusters present in the East of the island. An integrative taxonomy approach was therefore conducted by combining microsatellite and morphological data used in the previous study with new data sets, and by adding ITS sequencing data, to validate the taxonomic level of these Malagasy genetic clusters and unravel phylogenetic relationships between SWIO species. As a result, based on phylogenetic, genotypic and morphological evidence, nine species were discriminated in the SWIO region, including seven in Madagascar, with two new eastern species. The leafless <i>Vanilla</i> group originated and diversified in Madagascar, from an ancestor of African descent, with three subsequent independent colonization events from Madagascar to the other territories of SWIO within the two main lineages (white versus yellow flower species). The new Malagasy species, <i>V. allorgeae</i> Andriamihaja &amp; Pailler sp. nov., and <i>V. atsinananensis</i> Andriamihaja &amp; Pailler sp. nov., are described and a new identification key is proposed.</p>","PeriodicalId":17087,"journal":{"name":"Journal of Systematics and Evolution","volume":"61 1","pages":"80-98"},"PeriodicalIF":0.0,"publicationDate":"2022-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jse.12858","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50132927","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Geographic patterns and climatic correlates of deep evolutionary legacies for angiosperm assemblages in China","authors":"Hong Qian,&nbsp;Tao Deng","doi":"10.1111/jse.12856","DOIUrl":"https://doi.org/10.1111/jse.12856","url":null,"abstract":"<p>Deep evolutionary histories can play an important role in assembling species into communities, but few studies have explored the effects of deep evolutionary histories on species assembly of angiosperms (flowering plants). Here we explore patterns of family divergence and diversification times (stem and crown ages, respectively) and phylogenetic fuses for angiosperm assemblages in 100 × 100 km grid cells across geographic and ecological gradients in China. We found that both family stem and crown ages of angiosperm assemblages are older in southeastern China with warm and humid climates than in northwestern China with cold and dry climates; these patterns are stronger for family stem ages than for family crown ages; families in colder and drier climates are more closely related across the family-level angiosperm phylogeny; and family phylogenetic fuses are, on average, longer for angiosperm assemblages in warm and humid climates than in cold and dry climate. We conclude that the fact that deep evolutionary histories, which were measured as family stem and crown ages and family phylogenetic fuses in this study, have shown strong geographic and ecological patterns suggests that deep evolutionary histories of angiosperms have profound effects on assembling angiosperm species into ecological communities.</p>","PeriodicalId":17087,"journal":{"name":"Journal of Systematics and Evolution","volume":"61 4","pages":"563-571"},"PeriodicalIF":0.0,"publicationDate":"2022-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50145157","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Grasses through space and time: An overview of the biogeographical and macroevolutionary history of Poaceae","authors":"Timothy J. Gallaher,&nbsp;Paul M. Peterson,&nbsp;Robert J. Soreng,&nbsp;Fernando O. Zuloaga,&nbsp;De-Zhu Li,&nbsp;Lynn G. Clark,&nbsp;Christopher D. Tyrrell,&nbsp;Cassiano A.D. Welker,&nbsp;Elizabeth A. Kellogg,&nbsp;Jordan K. Teisher","doi":"10.1111/jse.12857","DOIUrl":"10.1111/jse.12857","url":null,"abstract":"<p>Grasses are widespread on every continent and are found in all terrestrial biomes. The dominance and spread of grasses and grassland ecosystems have led to significant changes in Earth′s climate, geochemistry, and biodiversity. The abundance of DNA sequence data, particularly chloroplast sequences, and advances in placing grass fossils within the family allows for a reappraisal of the family′s origins, timing, and geographic spread and the factors that have promoted diversification. We reconstructed a time-calibrated grass phylogeny and inferred ancestral areas using chloroplast DNA sequences from nearly 90% of extant grass genera. With a few notable exceptions, the phylogeny is well resolved to the subtribal level. The family began to diversify in the Early–Late Cretaceous (crown age of 98.54 Ma) on West Gondwana before the complete split between Africa and South America. Vicariance from the splitting of Gondwana may be responsible for the initial divergence in the family. However, Africa clearly served as the center of origin for much of the early diversification of the family. With this phylogenetic, temporal, and spatial framework, we review the evolution and biogeography of the family with the aim to facilitate the testing of biogeographical hypotheses about its origins, evolutionary tempo, and diversification. The current classification of the family is discussed with an extensive review of the extant diversity and distribution of species, molecular and morphological evidence supporting the current classification scheme, and the evidence informing our understanding of the biogeographical history of the family.</p>","PeriodicalId":17087,"journal":{"name":"Journal of Systematics and Evolution","volume":"60 3","pages":"522-569"},"PeriodicalIF":0.0,"publicationDate":"2022-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jse.12857","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85166762","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mutational meltdown or controlled chain reaction: The dynamics of rapid plastome evolution in the hyperdiversity of Poaceae","authors":"Jie Wang,&nbsp;Gao-Fei Fu,&nbsp;Luke R. Tembrock,&nbsp;Xue-Zhu Liao,&nbsp;Song Ge,&nbsp;Zhi-Qiang Wu","doi":"10.1111/jse.12854","DOIUrl":"https://doi.org/10.1111/jse.12854","url":null,"abstract":"<p>The study of genomic structural evolution associated with accelerated evolutionary rates that result in avoidance of meltdown and increase biodiversity is becoming ever more possible as the number of available plastomes increases. To more comprehensively analyze rate heterogeneity among monocots and within Poaceae, we sequenced plastomes from four Poaceae species, combined them with publicly available data from ~200 plastomes, and conducted comparative analyses to quantify the pattern of rate heterogeneity between different lineages, functional groups, and periods of evolutionary time. We compared structural differences across the Poaceae to quantify how changes in plastome size correspond to different genomic subunits and the evolution of IR–SC junction boundaries. The substitution rates among ancestral Poaceae were inferred to be exceptionally rapid compared to other monocots but slowed after divergence into extant lineages, which could not be sufficiently explained by positive selection. As such, rapid rates in the ancestral lineage leading to Poaceae might be more closely linked to large-scale structural changes like the loss of <i>ycf1</i> and <i>ycf2</i>. The total increase in plastome size across Poaceae was positively correlated with the total length of intergenic spacers, tandem repeats, and dispersed repeats as well as large single copy, and inverted repeats (IRs). The continuous evolution of IR–SC junction boundaries was asynchronous with sizes of total genome and subunits across Poaceae. Future work is needed to better understand what factors in ancestral Poaceae evolved to harness such rapid rates of plastome evolution, avoid a mutational meltdown, and escape the stagnation of strong purifying selection as well as if these factors could be utilized to synthetically control rates.</p>","PeriodicalId":17087,"journal":{"name":"Journal of Systematics and Evolution","volume":"61 2","pages":"328-344"},"PeriodicalIF":0.0,"publicationDate":"2022-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50136494","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Patterns and impacting factors of gene evolutionary rate between wild and cultivated emmer wheat (Triticum turgidum)","authors":"Peng-Zheng Lei,&nbsp;Qi Ai,&nbsp;Zhu-Pei Xiong,&nbsp;Jia-Nan Lu,&nbsp;Xiu-Lan Wei,&nbsp;Weining Song,&nbsp;Xiao-Qin Liu,&nbsp;Xiao-Jun Nie","doi":"10.1111/jse.12852","DOIUrl":"https://doi.org/10.1111/jse.12852","url":null,"abstract":"<p>Tetraploid emmer wheat (<i>Triticum turgidum</i> L., BBAA) is the founder progenitor of bread wheat, providing the valuable genetic resource and gene pool for wheat improvement. However, the evolutionary trajectory of tetraploid wheat, especially the evolutionary fate of different types of genes has not been well studied. In this study, the rate of non-synonymous substitution (d_N) and synonymous substitution (d_S) was calculated by comparing the orthologs between the wild emmer and cultivated durum wheat at the whole genome and subgenome levels to obtain the positively selected genes (PSGs) and negatively selected genes (NSGs). Then, mutation rate, gene length, exon number, GC content, codon bias, and expression level were comprehensively investigated and compared between the PSGs and NSGs. Within both wild emmer and cultivated durum wheat, PSGs between A and B subgenome displayed shorter gene and exon lengths as well as fewer exon numbers compared with NSGs, whereas from wild emmer to cultivated durum wheat, PSGs showed longer gene length and more exon numbers. Furthermore, PSGs displayed much higher expression levels and stronger codon usage bias, but lower genetic diversity compared with NSGs. Finally, two PSGs <i>TdER1-6B</i>, and <i>TdLC7-2A</i>, were found to play the crucial roles in regulating grain width and plant height of tetraploid wheat, respectively. This study systematically investigated the evolutionary, structural, and functional difference between PSGs and NSGs in tetraploid wheat, which will contribute to a better understanding of the selective mode and evolutionary trajectory during wheat domestication and evolution.</p>","PeriodicalId":17087,"journal":{"name":"Journal of Systematics and Evolution","volume":"61 2","pages":"345-355"},"PeriodicalIF":0.0,"publicationDate":"2022-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50124567","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Extremely high diversity and endemism of chlorotypes in Wikstroemia monnula Hance (Thymelaeaceae) shed light on the effects of habitat heterogeneity on intraspecific differentiation in southeast China","authors":"Chao-Qiang Zhang,&nbsp;Yi-Wei Tang,&nbsp;De-Feng Tian,&nbsp;Yan-Yan Huang,&nbsp;Guang-Hui Yang,&nbsp;Peng Nan,&nbsp;Yu-Guo Wang,&nbsp;Ling-Feng Li,&nbsp;Zhi-Ping Song,&nbsp;Ji Yang,&nbsp;Yang Zhong,&nbsp;Wen-Ju Zhang","doi":"10.1111/jse.12848","DOIUrl":"https://doi.org/10.1111/jse.12848","url":null,"abstract":"<p>Southeast China is one of the core areas of the Sino-Japanese floristic region and a hotspot of biodiversity in East Asia. This region has been considered as both a museum and a cradle of woody genera in China. Why a region with highly stable topography and climate could be a cradle of species diversity remains unclear. In this study, the phylogeographic pattern and genetic structure of <i>Wikstroemia monnula</i>, an endemic species to southeast China, were analyzed by sequencing four chloroplast DNA fragments (4679 bp in total) of 836 individuals from 39 populations. Extremely high diversity and endemism of chlorotypes were found. Out of 54 chlorotypes, 51 (94.44%) were private, with genetic diversity index (<i>H</i>_T) near 1 (<i>H</i>_T = 0.992), and 96.51% of the genetic variation occurring among populations, indicating that this species has undergone strong intraspecific differentiation and very limited migration. The correlational analysis showed that the population differentiation of <i>W. monnula</i> was driven not only via isolation by distance (IBD), but more importantly via isolation by environment (IBE). A significant phylogeographic structure was not found (<i>N</i>_ST = 0.979, <i>G</i>_ST = 0.833, <i>P</i> &gt; 0.05); however, the spatial pattern of the sublineages of chlorotypes was largely consistent with the biogeographic boundaries on a smaller scale in the region. These results suggest that habitat heterogeneity in southeast China not only promoted speciation on a long time-scale, but still continues to impact population differentiation in recent times.</p>","PeriodicalId":17087,"journal":{"name":"Journal of Systematics and Evolution","volume":"61 2","pages":"399-413"},"PeriodicalIF":0.0,"publicationDate":"2022-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50140125","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Stable persistence of relict populations involved evolutionary shifts of reproductive characters in the genus Tanakaea (Saxifragaceae)","authors":"Daiki Takahashi,&nbsp;Yuji Isagi,&nbsp;Pan Li,&nbsp;Ying-Xiong Qiu,&nbsp;Hiroaki Setoguchi,&nbsp;Yoshihisa Suyama,&nbsp;Ayumi Matsuo,&nbsp;Yoshihiro Tsunamoto,&nbsp;Shota Sakaguchi","doi":"10.1111/jse.12849","DOIUrl":"10.1111/jse.12849","url":null,"abstract":"<p>Tertiary relicts often show evolutionary stasis in morphology and ecology and have been hypothesized to retain stable population sizes in refugia. However, recent studies have reported that some relicts evolutionarily shifted their physiology, ecology, and morphology and experienced various patterns of demography. To understand the historical survival of relict plants, a multidimensional study investigating the evolution of ecological and morphological traits as well as population demographic history is needed. The genus <i>Tanakaea</i> (Saxifragaceae) comprises two species in China and Japan. These species share most vegetative characteristics and are sometimes treated as a single species. The distribution pattern is relictual, as the populations are confined to small areas in mesic warm temperate forests less influenced by Quaternary glacial climates. Focusing on the relictual plant group, this study tested the hypotheses of evolutionary stasis and population stability in long-term refugia. Genetic analyses using plastome sequences and genome-wide single-nucleotide polymorphisms revealed divergence of the two species approximately 6.8 million years ago and strong genetic differentiation of the regional populations. Demographic analysis revealed that almost all populations retained stable population sizes during glacial–interglacial climate changes, supporting the traditional view. However, morphological assessments revealed a simultaneous shift in breeding systems (from hermaphrodite to dioecy/non-clonal to clonal reproduction) in Japanese species and intraspecific differentiation of leaf traits. Therefore, the relict species do not show evolutionary stasis in every aspect. Changes in reproductive characteristics may have contributed to their long-term <i>in situ</i> survival.</p>","PeriodicalId":17087,"journal":{"name":"Journal of Systematics and Evolution","volume":"60 6","pages":"1405-1416"},"PeriodicalIF":0.0,"publicationDate":"2022-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jse.12849","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79007527","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A worldwide phylogenetic classification of the Poaceae (Gramineae) III: An update","authors":"Robert J. Soreng,&nbsp;Paul M. Peterson,&nbsp;Fernando O. Zuloaga,&nbsp;Konstantin Romaschenko,&nbsp;Lynn G. Clark,&nbsp;Jordan K. Teisher,&nbsp;Lynn J. Gillespie,&nbsp;Patricia Barberá,&nbsp;Cassiano A. D. Welker,&nbsp;Elizabeth A. Kellogg,&nbsp;De-Zhu Li,&nbsp;Gerrit Davidse","doi":"10.1111/jse.12847","DOIUrl":"10.1111/jse.12847","url":null,"abstract":"<p>We present an updated worldwide phylogenetic classification of Poaceae with 11 783 species in 12 subfamilies, 7 supertribes, 54 tribes, 5 super subtribes, 109 subtribes, and 789 accepted genera. The subfamilies (in descending order based on the number of species) are Pooideae with 4126 species in 219 genera, 15 tribes, and 34 subtribes; Panicoideae with 3325 species in 242 genera, 14 tribes, and 24 subtribes; Bambusoideae with 1698 species in 136 genera, 3 tribes, and 19 subtribes; Chloridoideae with 1603 species in 121 genera, 5 tribes, and 30 subtribes; Aristidoideae with 367 species in three genera and one tribe; Danthonioideae with 292 species in 19 genera and 1 tribe; Micrairoideae with 192 species in nine genera and three tribes; Oryzoideae with 117 species in 19 genera, 4 tribes, and 2 subtribes; Arundinoideae with 36 species in 14 genera and 3 tribes; Pharoideae with 12 species in three genera and one tribe; Puelioideae with 11 species in two genera and two tribes; and the Anomochlooideae with four species in two genera and two tribes. Two new tribes and 22 new or resurrected subtribes are recognized. Forty-five new (28) and resurrected (17) genera are accepted, and 24 previously accepted genera are placed in synonymy. We also provide an updated list of all accepted genera including common synonyms, genus authors, number of species in each accepted genus, and subfamily affiliation. We propose <i>Locajonoa, a new name and rank with a new combination, L. coerulescens.</i> The following seven new combinations are made in <i>Lorenzochloa</i>: <i>L. bomanii, L. henrardiana, L. mucronata, L. obtusa, L. orurensis, L. rigidiseta</i>, and <i>L. venusta</i>.</p>","PeriodicalId":17087,"journal":{"name":"Journal of Systematics and Evolution","volume":"60 3","pages":"476-521"},"PeriodicalIF":0.0,"publicationDate":"2022-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jse.12847","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73198240","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Plastid phylogenomics shed light on intergeneric relationships and spatiotemporal evolutionary history of Melocanninae (Poaceae: Bambusoideae)","authors":"Meng-Yuan Zhou,&nbsp;Jing-Xia Liu,&nbsp;Peng-Fei Ma,&nbsp;Jun-Bo Yang,&nbsp;De-Zhu Li","doi":"10.1111/jse.12843","DOIUrl":"10.1111/jse.12843","url":null,"abstract":"<p>Melocanninae is sister to other subtribes of Paleotropical woody bamboos with some 90 species mainly concentrated in Asia. However, phylogenetic relationships within the subtribe are poorly known. Here, we filled the gaps in complete plastome data of Melocanninae, reconstructed the phylogeny of Melocanninae, and further estimated divergence time and ancestral distribution range. Our results showed that the two major genera, <i>Cephalostachyum</i> Munro and <i>Schizostachyum</i> Nees, were paraphyletic. Species of <i>Cephalostachyum</i> were resolved in two successive basal clades, whereas <i>Annamocalamus</i> H. N. Nguyen, N. H. Xia, &amp; V. T. Tran was embedded in the <i>Schizostachyum</i> clade. Different plastid regions provided inconsistent signals for the relationship of <i>Melocanna</i> and <i>Pseudostachyum</i>. Conservative loci supported a successive divergence rather than sister relationship between them and the difference may be caused by long-branch attraction. We infer that Melocanninae originated in the East Himalaya to northern Myanmar in the early Miocene. Three routes were revealed in forming its present biogeographic pattern: <i>in situ</i> diversification on the Asian mainland, dispersing southwest to Sri Lanka and to the Western Ghats in South India, and spreading southeast to Malesia and Oceania by way of the Indo-China Peninsula. The rapid uplift of the Tibetan Plateau and the intensification of Asian monsoons since the Miocene and the sea level fall events since the Late Miocene might be potential driving forces for diversification of Melocanninae and, particularly the latter event, for the species radiation of <i>Schizostachyum</i>.</p>","PeriodicalId":17087,"journal":{"name":"Journal of Systematics and Evolution","volume":"60 3","pages":"640-652"},"PeriodicalIF":0.0,"publicationDate":"2022-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jse.12843","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75100311","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}