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Demographic history and identification of threats revealed by population genomic analysis provide insights into conservation for an endangered maple
Ma,Yongpeng; Liu,Detuan; Wariss,Hafiz Muhammad; Zhang,Rengang; Tao,Lidan; Milne,Richard,I; Sun,Weibang
2022
Source PublicationMOLECULAR ECOLOGY
ISSN0962-1083
Volume31Issue:3Pages:767-779
AbstractRecent advancements in whole genome sequencing techniques capable of covering nearly all the nucleotide variations of a genome would make it possible to set up a conservation framework for threatened plants at the genomic level. Here we applied a whole genome resequencing approach to obtain genome-wide data from 105 individuals sampled from the 10 currently known extant populations of Acer yangbiense, an endangered species with fragmented habitats and restricted distribution in Yunnan, China. To inform meaningful conservation action, we investigated what factors might have contributed to the formation of its extremely small population sizes and what threats it currently suffers at a genomic level. Our results revealed that A. yangbiense has low genetic diversity and comprises different numbers of genetic groups based on neutral (seven) and selected loci (13), with frequent gene flow between populations. Repeated bottleneck events, particularly the most recent one occurring within similar to 10,000 years before present, which decreased its effective population size (N-e) < 200, and severe habitat fragmentation resulting from anthropogenic activities as well as a biased gender ratio of mature individuals in its natural habitat, might have together contributed to the currently fragmented and endangered status of A. yangbiense. The species has suffered from inbreeding and deleterious mutation load, both of which varied among populations but had similar patterns; that is, populations with higher FROH (frequency of runs of homozygosity) always carried a larger number of deleterious mutations in the homozygous state than in populations with lower FROH. In addition, based on our genetic differentiation results, and the distribution patterns of homozygous deleterious mutations in individuals, we recommend certain conservation actions regarding the genetic rescue of A. yangbiense. Overall, our study provides meaningful insights into the conservation genetics and a framework for the further conservation for the endangered A. yangbiense.
KeywordAcer yangbiense deleterious mutation demographic history framework on conservation genomics resequencing run of homozygosity GENETIC DIVERSITY YUNNAN PROVINCE ACER-YANGBIENSE LAKE ERHAI R PACKAGE SELECTION PLANT SIZE CLIMATE TREE
DOI10.1111/mec.16289
WOS IDWOS:000725924100001
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Document Type期刊论文
Identifierhttp://ir.kib.ac.cn/handle/151853/73409
Collection中国科学院昆明植物研究所
Affiliation1.Chinese Acad Sci, Kunming Inst Bot, Yunnan Key Lab Integrat Conservat Plant Species E, Kunming, Yunnan, Peoples R China
2.Chinese Acad Sci, Kunming Inst Bot, Key Lab Plant Divers & Biogeog East Asia, Kunming, Yunnan, Peoples R China
3.Univ Chinese Acad Sci, Beijing, Peoples R China
4.Beijing Ori Gene Sci & Technol Co Ltd, Beijing, Peoples R China
5.Univ Edinburgh, Inst Mol Plant Sci, Edinburgh, Midlothian, Scotland
6.Chinese Acad Sci, Kunming Inst Bot, Kunming Bot Garden, Kunming, Yunnan, Peoples R China
Recommended Citation
GB/T 7714
Ma,Yongpeng,Liu,Detuan,Wariss,Hafiz Muhammad,et al. Demographic history and identification of threats revealed by population genomic analysis provide insights into conservation for an endangered maple[J]. MOLECULAR ECOLOGY,2022,31(3):767-779.
APA Ma,Yongpeng.,Liu,Detuan.,Wariss,Hafiz Muhammad.,Zhang,Rengang.,Tao,Lidan.,...&Sun,Weibang.(2022).Demographic history and identification of threats revealed by population genomic analysis provide insights into conservation for an endangered maple.MOLECULAR ECOLOGY,31(3),767-779.
MLA Ma,Yongpeng,et al."Demographic history and identification of threats revealed by population genomic analysis provide insights into conservation for an endangered maple".MOLECULAR ECOLOGY 31.3(2022):767-779.
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