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Central Asia revealed as a key area in evolution of Eremurus (Asphodelaceae)

plant Diversity 2024年第3期46卷 333-343页

作者： Dilmurod Makhmudjanov Sergei Volis Ziyoviddin Yusupov Inom Juramurodov Komiljon Tojibaev Tao Deng Hang Sun CAS Key laboratory for plant Diversity and biogeography of East Asia Kunming Institute of BotanyChinese Academy of SciencesKunming 650201YunnanChina Yunnan International Joint laboratory for biodiversity of Central Asia Kunming Institute of BotanyChinese Academy of SciencesKunming 650201YunnanChina institute of botany Academy Sciences of UzbekistanTashkent 100125Uzbekistan University of chinese academy of sciences Beijing 100864China

Eremurus was described at the beginning of the 19th ***,due to limited sampling and the small number of gene markers to date,its phylogeny and evolution are largely *** this study,we analyzed plastomes from 27 species belonging to 2 subgenera and 3 sections of Eremurus,which are found in Central Asia(its center of diversity)and *** also analyzed nuclear DNA ITS of 33 species,encompassing all subgenera and sections of the genus in Central Asia,southwest Asia and *** findings revealed that the genus was monophyletic,although both subgenera Eremurus and Henningia were found to be *** plastome and nrDNA-based phylogenetic trees had three clades that did not reflect the current taxonomy of the *** biogeographical and time-calibrated trees suggest that Eremurus originated in the ancient Tethyan area in the second half of the *** of Eremurus occurred from the early Oligocene to the late *** Sea retreat and several orogenetic events,such as the progressive uplift of the Qinghai-Tibet Plateau and surrounding mountain belts(Altai,Pamir,Tian Shan),caused serious topographic and climate(aridification)changes in Central Asia that may have triggered a split of clades and *** this transformed Central Asia,speciation proceeded rapidly driven mainly by vicariance caused by numerous mountain chains and specialization to a variety of climatic,topographic and soil conditions that exist in this region.

关键词： Asphodelaceae Asphodeloideae Plastome Central Asia Qinghai-Tibet Plateau

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Allelopathic potentials of surrounding vegetation on seedling establishment of alpine cushion Arenaria polytrichoides

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Journal of plant Ecology 2024年第2期17卷 146-160页

作者： Xu-Fang Chen Li-Shen Qian Hong-Hua Shi Ya-Zhou Zhang Min-Shu Song Hang Sun Jian-Guo Chen Key laboratory for plant Diversity and biogeography of East Asia Kunming Institute of BotanyChinese Academy of SciencesKunming 650201YunnanChina University of chinese academy of sciences Beijing 101408China

When facilitating other species and sustaining plant community structures and biodiversity,alpine cushion plants simultaneously experience negative feedback effects from surrounding ***,the impact of surrounding vegetation on cushion dynamics remains poorly understood,particularly in terms of allelopathic *** investigate the allelopathic potentials of surrounding vegetation on seedling establishment of the typical cushion plant Arenaria polytrichoides *** an elevational gradient,we extracted potential allelopathic compounds and tested their impacts on seed germination and seedling growth of *** addition,exclusion experiments using activated carbon were conducted to further elucidate these *** results demonstrate that surrounding vegetation exhibits certain allelopathic potentials on *** seedling establishment,with variations observed based on elevation,source and concentration of allelopathy compounds,as well as growing ***,low-elevation vegetation exerts pronounced suppression on seedling ***,higher-elevation vegetation generally shows no effect on seed germination but stimulates seedling growth through allelopathy ***,aboveground vegetation predominantly inhibits both seed germination and seedling growth in low-elevation communities;however,the effects of belowground vegetation depend on elevation and extract concentration *** identifed allelopathic potentials of surrounding vegetation signifcantly infuence the population dynamics of cushion *** by potentially accelerating population degeneration in lower-elevation communities while ensuring consistent population recruitment and expansion in higher-elevation communities.

关键词： allelopathic potential community dynamic cushion plant seed germination seedling growth

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ICE1 interacts with IDD14 to transcriptionally activate QQS to increase pollen germination and viability

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Journal of Integrative plant Biology 2024年第8期66卷 1801-1819页

作者： Landi Luo Yan Zheng Xieshengyang Li Qian Chen Danni Yang Zhijia Gu Ya Yang Yunqiang Yang Xiangxiang Kong Yongping Yang CAS Key laboratory of Tropical plant Resources and Sustainable Use Xishuangbanna Tropical Botanical GardenThe Chinese Academy of SciencesXishuangbanna 666303China Germplasm Bank of Wild Species Yunnan Key Laboratory for Crop Wild Relatives OmicsKunming Institute of BotanyThe Chinese Academy of SciencesKunming 650201China School of Agriculture Yunnan UniversityKunming 650091China Key laboratory for plant Diversity and biogeography of East Asia Kunming Institute of BotanyThe Chinese Academy of SciencesKunming 650201China

In flowering plants,sexual reproductive success depends on the production of viable pollen ***,the mechanisms by which QUA QUINE STARCH(QQS)regulates pollen development and how transcriptional activators facilitate the transcription of QQS in this process remain poorly ***,we demonstrate that INDUCER OF CBF EXPRESSION 1(ICE1),a basic helix–loop–helix(b HLH)transcription factor,acts as a key transcriptional activator and positively regulates QQS expression to increase pollen germination and viability in Arabidopsis thaliana by interacting with INDETERMINATE DOMAIN14(IDD14).In our genetic and biochemical experiments,overexpression of ICE1 greatly promoted both the activation of QQS and high pollen viability mediated by ***14 additively enhanced ICE1 function by promoting the binding of ICE1 to the QQS *** addition,mutation of ICE1 significantly repressed QQS expression;the impaired function of QQS and the abnormal anther dehiscence jointly affected pollen development of the ice1-2 *** results also showed that the enhancement of pollen activity by ICE1 depends on ***,QQS interacted with CUT1,the key enzyme for long-chain lipid *** interaction both promoted CUT1 activity and regulated pollen lipid metabolism,ultimately determining pollen hydration and *** results not only provide new insights into the key function of QQS in promoting pollen development by regulating pollen lipid metabolism,but also elucidate the mechanism that facilitates the transcription of QQS in this vital developmental process.

关键词： transcriptional metabolism jointly

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Historical biogeography and evolutionary diversification of Lilium(Liliaceae): New insights from plastome phylogenomics

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plant Diversity 2024年第2期46卷 219-228页

作者： Nian Zhou Ke Miao Changkun Liu Linbo Jia Jinjin Hu Yongjiang Huang Yunheng Ji CAS Key laboratory for plant Diversity and biogeography of East Asia Kunming Institute of BotanyChinese Academy of SciencesKunmingYunnan 650201China University of chinese academy of sciences Beijing 100049China Key laboratory of Bio-Resources and Eco-Environment of Ministry of Education College of Life SciencesSichuan UniversityChengduSichuan 610065China Yunnan Key laboratory for Integrative Conservation of plant Species with Extremely Small Population Kunming Institute of BotanyChinese Academy of SciencesKunmingYunnan 650201China

Here, we infer the historical biogeography and evolutionary diversification of the genus Lilium. For this purpose, we used the complete plastomes of 64 currently accepted species in the genus Lilium(14plastomes were newly sequenced) to recover the phylogenetic backbone of the genus and a timecalibrated phylogenetic framework to estimate biogeographical history scenarios and evolutionary diversification rates of Lilium. Our results suggest that ancient climatic changes and geological tectonic activities jointly shaped the distribution range and drove evolutionary radiation of Lilium, including the Middle Miocene Climate Optimum(MMCO), the late Miocene global cooling, as well as the successive uplift of the Qinghai-Tibet Plateau(QTP) and the strengthening of the monsoon climate in East Asia during the late Miocene and the Pliocene. This case study suggests that the unique geological and climatic events in the Neogene of East Asia, in particular the uplift of QTP and the enhancement of monsoonal climate, may have played an essential role in formation of uneven distribution of plant diversity in the Northern Hemisphere.

关键词： Asian monsoon Climatic changes Distribution range Evolutionary complexity Radiative diversification Species diversity Qinghai-Tibet Plateau(QTP)

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Eco-evolutionary evidence for the global diversity pattern of Cycas(Cycadaceae)

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Journal of Integrative plant Biology 2024年第6期66卷 1170-1191页

作者： Jian Liu Anders JLindstrom Yiqing Gong Shanshan Dong Yusheng(Chris)Liu Shouzhou Zhang Xun Gong CAS Key laboratory for plant Diversity and biogeography of East Asia Kunming Institute of BotanyChinese Academy of SciencesKunming 650201China Department of Economic plants and Biotechnology Yunnan Key Laboratory for Wild Plant ResourcesKunming Institute of BotanyChinese Academy of SciencesKunming 650201China University of chinese academy of sciences Beijing 100049China Global biodiversity Conservancy 144/124 Moo3Soi Bua ThongBangsalaeSattahipChonburi 20250Thailand Key laboratory of Southern Subtropical plant Diversity Fairy Lake Botanical GardenShenzhen&Chinese Academy of SciencesShenzhen 518004China Department of Earth and Environmental sciences Indiana University-IndianapolisIndianapolisIN 46202USA

The evolution of the latitudinal diversity gradient(LDG),characterized by a peak in diversity toward the tropics,has captured significant attention in evolutionary biology and ***,the inverse LDG(i-LDG)mechanism,wherein species richness increases toward the poles,remains inadequately *** are among one of the oldest lineages of extant seed plants and have undergone extensive diversification in the ***,the extant cycad abundance exhibits an i-LDG pattern,and the underlying causes for this phenomenon remain largely ***,using 1,843 nuclear genes from a nearly complete sampling,we conducted comprehensive phylogenomic analyses to establish a robust species-level phylogeny for Cycas,the largest genus within *** then reconstructed the spatial-temporal dynamics and integrated global environmental data to evaluate the roles of species ages,diversification rates,contemporary environment,and conservatism to ancestral niches in shaping the i-LDG *** found Cycas experienced decreased diversification rates,coupled with the cooling temperature since its origin in the Eocene from continental *** regions have distinctively contributed to the formation of i-LDG for Cycas,with the northern hemisphere acting as evolutionary museums and the southern hemisphere serving as ***,water-related climate variables,specifically precipitation seasonality and potential evapotranspiration,were identified as paramount factors constraining Cycas species richness in the rainforest biome near the ***,the adherence to ancestral monsoonal climates emerges as a critical factor in sustaining the diversity *** study underscores the imperative of integrating both evolutionary and ecological approaches to comprehensively unravel the mechanisms underpinning global biodiversity patterns.

关键词： cycads latitudinal diversity gradient niche conservatism spatiotemporal diversification species richness

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Genomes of Meniocus linifolius and Tetracme quadricornis reveal the ancestral karyotype and genomic features of core Brassicaceae

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plant Communications 2024年第7期5卷 68-89页

作者： Jie Liu Shi-Zhao Zhou Yun-Long Liu Bin-Yan Zhao Dongmei Yu Mi-Cai Zhong Xiao-Dong Jiang Wei-Hua Cui Jiu-Xia Zhao Juan Qiu Liang-Min Liu Zhen-Hua Guo Hong-Tao Li Dun-Yan Tan Jin-Yong Hu De-Zhu Li CAS Key laboratory for plant Diversity and biogeography of East Asia&Yunnan Key laboratory of Crop Wild Relatives Omics Kunming Institute of BotanyChinese Academy of SciencesKunming 650201China Germplasm Bank of Wild Species&Yunnan Key laboratory for Crop Wild Relatives Omics Kunming Institute of BotanyChinese Academy of SciencesKunming 650201China College of Life sciences Xinjiang Agricultural UniversityÜrümqi 830052China University of chinese academy of sciences Beijing 100049China These authors contributed equally to this article

Brassicaceae represents an important plant family from both a scientific and economic ***,genomic features related to the early diversification of this family have not been fully characterized,especially upon the uplift of the Tibetan Plateau,which was followed by increasing aridity in the Asian interior,intensifying monsoons in Eastern Asia,and significantly fluctuating daily ***,we reveal the genomic architecture that accompanied early Brassicaceae diversification by analyzing two high-quality chromosome-level genomes for Meniocus linifolius(Arabodae;clade D)and Tetracme quadricornis(Hesperodae;clade E),together with genomes representing all major Brassicaceae clades and the basal *** reconstructed an ancestral core Brassicaceae karyotype(CBK)containing 9 pseudochromosomes with 65 conserved syntenic genomic blocks and identified 9702 conserved genes in *** detected pervasive conflicting phylogenomic signals accompanied by widespread ancient hybridization events,which correlate well with the early divergence of core *** identified a successive Brassicaceae-specific expansion of the class I TREHALOSE-6-PHOSPHATE SYNTHASE 1(TPS1)gene family,which encodes enzymes with essential regulatory roles in flowering time and embryo *** TPS1s were mainly randomly amplified,followed by expression *** results provide fresh insights into historical genomic features coupled with Brassicaceae evolution and offer a potential model for broad-scale studies of adaptive radiation under an ever-changing environment.

关键词： Cruciferae genomic features ancient hybridization core Brassicaceae karyotype CBK TREHALOSE-6-PHOSPHATE SYNTHASE 1 genes TPS1s

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RAD-seq data reveals robust phylogeny and morphological evolutionary history of Rhododendron

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Horticultural plant Journal 2024年第3期10卷 866-878页

作者： Yuanting Shen Gang Yao Yunfei Li Xiaoling Tian Shiming Li Nian Wang Chengjun Zhang Fei Wang Yongpeng Ma Yunnan Key laboratory for Integrative Conservation of plant Species with Extremely Small Populations Kunming Institute of BotanyChinese Academy of SciencesKunmingYunnan 650201China Key laboratory for plant Diversity and biogeography of East Asia Kunming Institute of BotanyChinese Academy of SciencesKunmingYunnan 650201China University of chinese academy of sciences Beijing 100049China Beijing Genomics of institute ShenzhenGuangdong 518120China Guiyang institute of Humanities and Technology GuiyangGuizhou 550025China State Forestry and Grassland Administration Key laboratory of Silviculture in Downstream Areas of the Yellow River College of ForestryShandong Agricultural UniversityTai'anShandong 271018China The Southwest China of Germplasm Bank of Wild Species Kunming Institute of BotanyChinese Academy of SciencesKunmingYunnan 650201China West China Subalpine Botanical Garden Institute of BotanyChinese Academy of SciencesChengduSichuan 611834China

Rhododendron is famous for its high ornamental ***,the genus is taxonomically difficult and the relationships within Rhododendron remain *** addition,the origin of key morphological characters with high horticulture value need to be *** problems largely hinder utilization of germplasm *** studies attempted to disentangle the phylogeny of Rhododendron,but only used a few genomic markers and lacked large-scale sampling,resulting in low clade support and contradictory phylogenetic ***,we used restriction-site associated DNA sequencing(RAD-seq)data and morphological traits for 144 species of Rhododendron,representing all subgenera and most sections and subsections of this species-rich genus,to decipher its intricate evolutionary history and reconstruct ancestral *** results revealed high resolutions at subgenera and section levels of Rhododendron based on RAD-seq *** optimal phylogenetic tree and split tree recovered five lineages among ***(cladeⅠ)formed the basal *** and Azaleastrum formed cladeⅡand had sister ***Ⅲincluded all scaly rhododendron ***(cladeⅣ)formed a sister group to ***(cladeⅤ).The results of ancestral state reconstruction showed that Rhododendron ancestor was a deciduous woody plant with terminal inflorescence,ten stamens,leaf blade without scales and broadly funnelform corolla with pink or purple *** study shows significant distinguishability to resolve the evolutionary history of Rhododendron based on high clade support of phylogenetic tree constructed by RAD-seq *** also provides an example to resolve discordant signals in phylogenetic trees and demonstrates the application feasibility of RAD-seq with large amounts of missing data in deciphering intricate evolutionary ***,the reconstructed ancestral state of six important characters provides insights into the inn

关键词： Rhododendron RAD-seq Missing data Quartet sampling(QS) Ancestral state reconstruction

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Nuclear phylogenomics of Asteraceae with increased sampling provides new insights into convergent morphological and molecular evolution

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plant Communications 2024年第6期5卷 117-138页

作者： Guojin Zhang Junbo Yang Caifei Zhang Bohan Jiao JoséL.Panero Jie Cai Zhi-Rong Zhang Lian-Ming Gao Tiangang Gao Hong Ma College of Life sciences Hunan Normal UniversityChangshaHunan 410081China Department of Biology the Huck Institute of the Life Sciencesthe Pennsylvania State UniversityState CollegePA 16801USA State Key laboratory of plant Diversity and Specialty Crops Institute of BotanyChinese Academy of SciencesBeijing 100093China Germplasm Bank of Wild Species Kunming Institute of BotanyChinese Academy of SciencesKunmingYunnan 650201China Wuhan Botanical Garden and Sino-Africa Joint Research Center Chinese Academy of SciencesWuhan 430074China Department of Integrative Biology University of TexasAustinTX 78712USA CAS Key laboratory for plant Diversity and biogeography of East Asia Kunming Institute of BotanyChinese Academy of SciencesKunmingYunnan 650201China Lijiang National Forest biodiversity National Observation and Research Station Kunming Institute of BotanyChinese Academy of SciencesLijiangYunnan 674100China

Convergent morphological evolution is widespread in flowering plants,and understanding this phenomenon relies on well-resolved *** phylogenetic reconstruction using transcriptome datasets has been successful in various angiosperm groups,but it is limited to taxa with available fresh ***,which are one of the two largest angiosperm families and are important for both ecosystems and human livelihood,show multiple examples of convergent *** Asteraceae phylogenies have resolved relationships among most subfamilies and many tribes,but many phylogenetic and evolutionary questions regarding subtribes and genera remain,owing to limited ***,we increased the sampling for Asteraceae phylogenetic reconstruction using transcriptomes and genome-skimming datasets and produced nuclear phylogenetic trees with 706 species representing two-thirds of recognized *** character reconstruction supports multiple convergent evolutionary events in Asteraceae,with gains and losses of bilateral floral symmetry correlated with diversification of some subfamilies and smaller groups,*** of the calyx-related pappus may have been especially important for the success of some subtribes and *** evolutionary analyses support the likely contribution of duplications of MADS-box and TCP floral regulatory genes to innovations in floral morphology,including capitulum inflorescences and bilaterally symmetric flowers,potentially promoting the diversification of *** divergences and reductions in CYC2 gene expression are related to the gain and loss of zygomorphic *** phylogenomic work with greater taxon sampling through inclusion of genome-skimming datasets reveals the feasibility of expanded evolutionary analyses using DNA samples for understanding convergent evolution.

关键词： sunflower family floral symmetry florets capitulescence molecular clock ancestral character pappus subtribe MADS-box TCP CYC2 gene family gene expression

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Degeneration of foundation cushion species induced by ecological constraints can cause massive changes in alpine plant communities

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Science China(Life sciences) 2024年第4期67卷 789-802页

作者： Jianguo Chen Xufang Chen Lishen Qian Yazhou Zhang Bo Li Honghua Shi Lu Sun Christian Schöb Hang Sun Key laboratory for plant Diversity and biogeography of East Asia Kunming Institute of BotanyChinese Academy of SciencesKunming 650201China University of chinese academy of sciences Beijing 100049China College of Resources and Environment Yunnan Agricultural UniversityKunming 650500China Área de Biodiversidad y Conservación Universidad Rey Juan CarlosMóstoles 28933Spain

Foundational cushion plants can re-organize community structures and sustain a prominent proportion of alpine biodiversity,but they are sensitive to climate *** loss of cushion species can have broad consequences for associated *** potential plant community changes with the population dynamics of cushion plants remain,however,*** eight plant communities along a climatic and community successional gradient,we assessed cushion population dynamics,the underlying ecological constraints and hence associated plant community changes in alpine communities dominated by the foundational cushion plant Arenaria *** population dynamics of Arenaria are attributed to ecological constraints at a series of life history *** functions are constrained by increasing associated beneficiary plants;subsequent seedling establishment is constrained by temperature,water and light availability,extreme climate events,and interspecific competition;strong competitive exclusion may accelerate mortality and degeneration of cushion *** with cushion dynamics,species composition,abundance and community structure gradually *** cushion plants completely degenerate,previously cushion-dominated communities shift to relatively stable communities that are overwhelmingly dominated by *** warming may accelerate the degeneration process of *** of this foundational cushion plant will possibly induce massive changes in alpine plant communities and hence ecosystem functions in alpine *** assessment of the population dynamics of foundation species is critical for an effective conservation of alpine biodiversity.

关键词： alpine ecosystem biodiversity change climate change plant community dynamics foundation species global warming population dynamics

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BambooBase:A comprehensive database of bamboo omics and systematics

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Molecular plant 2024年第5期17卷 682-685页

作者： Yun-Long Liu Shu-Yang Gao Guihua Jin Meng-Yuan Zhou Qijuan Gao Cen Guo Yi-Zhou Yang Liang-Zhong Niu Enhua Xia Zhen-Hua Guo Peng-Fei Ma De-Zhu Li Germplasm Bank of Wild Species&Yunnan Key laboratory of Crop Wild Relatives Omics Kunming Institute of BotanyChinese Academy of SciencesKunmingYunnan 650201China kunming College of Life Science University of Chinese Academy of SciencesKunmingYunnan 650201China State Key laboratory of Tea plant Biology and Utilization Anhui Agricultural UniversityHefeiAnhui 230036China School of Computer and Artificial Intelligence Hefei Normal UniversityHefeiAnhui 230061China Key laboratory for plant Diversity and biogeography in East Asia Kunming Institute of BotanyChinese Academy of SciencesKunmingYunnan 650201China

Dear Editor,Bamboos(Bambusoideae,Poaceae)are of significant economic and ecological importance,supporting billions of people and contributing to international trade(Wu et al.,2023).They play a crucial role in carbon fixation and support a multitude of other species including the giant panda(Clark et al.,2015).Since the release of the first draft genome of moso bamboo(Phyllostachys edulis)(Peng et al.,2013),there has been a notable increase in the sequencing,assembly,and annotation of diverse bamboo genomes(Guo et al.,2019;Zheng et al.,2022;Ma et al.,2024).An existing resource for bamboo genomics,BambooGDB(Zhao et al.,2014),provides information based on the individual draft reference genome of moso *** is needed,however,is a resource reinforcing multiple genome assemblies in Bambusoideae to enable researchers to unravel the evolutionary history of chromosomes and genes through cladespecific comparative genomic ***,we present BambooBase(https://***/),a newly developed web-based database designed to provide a seamless user experience for bamboo omics and systematics.

关键词： enable supporting Bamboo

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