Genetic diversity and structure of Rhododendron meddianum, a plant species with extremely small populations
Zhang,Xiu-Jiao; Liu,Xiong-Fang; Liu,De-Tuan; Cao,Yu-Rong; Li,Zheng-Hong; Ma,Yong-Peng; Ma,Hong
Source PublicationPLANT DIVERSITY
AbstractRhododendron meddianum is a critically endangered species with important ornamental value and is also a plant species with extremely small populations. In this study, we used double digest restriction-site-associated DNA sequencing (ddRAD) technology to assess the genetic diversity, genetic structure and demographic history of the three extant populations of R. meddianum. Analysis of SNPs indicated that R. meddianum populations have a high genetic diversity (pi = 0.0772 +/- 0.0024, H-E = 0.0742 +/- 0.002). Both F-ST values (0.1582-0.2388) and AMOVA showed a moderate genetic differentiation among the R. meddianum populations. Meanwhile, STRUCTURE, PCoA and NJ trees indicated that the R. meddianum samples were clustered into three distinct genetic groups. Using the stairway plot, we found that R. meddianum underwent a population bottleneck about 70,000 years ago. Furthermore, demographic models of R. meddianum and its relative, Rhododendron cyanocarpum, revealed that these species diverged about 3.05 (2.21-5.03) million years ago. This divergence may have been caused by environmental changes that occurred after the late Pliocene, e.g., the Asian winter monsoon intensified, leading to a drier climate. Based on these findings, we recommend that R. meddianum be conserved through in situ, ex situ approaches and that its seeds be collected for germplasm. Copyright (C) 2021 Kunming Institute of Botany, Chinese Academy of Sciences. Publishing services by Elsevier B.V. on behalf of KeAi Communications Co. Ltd.
KeywordRhododendron meddianum ddRAD Genetic diversity Population demography Conservation implications DEMOGRAPHIC HISTORY TOOL SET ERICACEAE SOFTWARE LOCI PHYLOGENY INFERENCE BIOLOGY MARKERS STACKS
WOS IDWOS:000735917400005
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Document Type期刊论文
Affiliation1.[Zhang, Xiu-Jiao
2.Liu, Xiong-Fang
3.Cao, Yu-Rong
4.Li, Zheng-Hong
5.Chinese Acad Forestry, Res Inst Resources Insects, Kunming 650224, Yunnan, Peoples R China
6.Nanjing Forestry Univ, Coll Forestry, Nanjing 210037, Jiangsu, Peoples R China
7.[Liu, De-Tuan
8.Chinese Acad Sci, Kunming Inst Bot, Yunnan Key Lab Integrat Conservat Plant Species E, Kunming 650201, Yunnan, Peoples R China
9.Yunnan Univ, Sch Ecol & Environm Sci, Yunnan Key Lab Plant Reprod Adapt & Evolutionary, Kunming 650504, Yunnan, Peoples R China
Recommended Citation
GB/T 7714
Zhang,Xiu-Jiao,Liu,Xiong-Fang,Liu,De-Tuan,et al. Genetic diversity and structure of Rhododendron meddianum, a plant species with extremely small populations[J]. PLANT DIVERSITY,2021,43(6):472-479.
APA Zhang,Xiu-Jiao.,Liu,Xiong-Fang.,Liu,De-Tuan.,Cao,Yu-Rong.,Li,Zheng-Hong.,...&Ma,Hong.(2021).Genetic diversity and structure of Rhododendron meddianum, a plant species with extremely small populations.PLANT DIVERSITY,43(6),472-479.
MLA Zhang,Xiu-Jiao,et al."Genetic diversity and structure of Rhododendron meddianum, a plant species with extremely small populations".PLANT DIVERSITY 43.6(2021):472-479.
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