典型文献
Genomic variation patterns of subspecies defined by phenotypic criteria:Analyses of the mangrove species complex,Avicennia marina
文献摘要：
Subspecies is used to designate taxa below species but above geographical populations.What patterns of genomic variation are expected if taxa are designated as subspecies?In this study,we carry out such a survey on the mangrove tree Avicennia marina(Forssk.)Vierh.of the Indo-West Pacific coasts.This species has three subspecies,distinguished by morphological traits and geographical distribution.We collected samples from 16 populations(577 individuals)covering all three subspecies and sequenced 94 nuclear genes.We reveal comprehensive genetic divergence among subspecies,generally higher than among geographical populations within subspecies.The level of genetic diversity differs among the three subspecies,possibly hinting at a degree of separation among their gene pools.We observed that divergence varies from locus to locus across the genome.A small portion of the genome is most informative about subspecies delineation,whereas the rest is undifferentiated or slightly differentiated,hinting at uneven gene flow and incomplete isolation.The three subspecies likely split simultaneously with gene flow among lineages.This reticulate evolution results in some discordance between morphology and genetics in areas of population contact.In short,A.marina subspecies show species-like patterns in some respects and population-like patterns in others.We propose that the subspecies designated in A.marina are informative in predicting genetic divergences and useful in making conservation decisions.
文献关键词：
中图分类号：
作者姓名：
Zheng-Zhen Wang;Zi-Xiao Guo;Cai-Rong Zhong;Hao-Min Lyu;Xin-Nian Li;Norman C.Duke;Su-Hua Shi
作者机构：
State Key Laboratory of Biocontrol,Guangdong Key Laboratory of Plant Resources,School of Life Sciences,Sun Yat-sen University,Guangzhou 510275,China;Guangdong Key Laboratory of Animal Conservation and Resource Utilization,Guangdong Public Laboratory of Wild Animal Conservation and Utilization,Institute of Zoology,Guangdong Academy of Sciences,Guangzhou 510260,China;Hainan Dongzhai Harbor National Nature Reserve,Haikou 571129,China;Centre for Tropical Water and Aquatic Ecosystem Research,James Cook University,Townsville,QLD 4811,Australia
文献出处：
引用格式：
[1]Zheng-Zhen Wang;Zi-Xiao Guo;Cai-Rong Zhong;Hao-Min Lyu;Xin-Nian Li;Norman C.Duke;Su-Hua Shi-.Genomic variation patterns of subspecies defined by phenotypic criteria:Analyses of the mangrove species complex,Avicennia marina)[J].植物分类学报,2022(04):835-847
A类：
Subspecies,Vierh
B类：
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AB值：
0.53664
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