Genomic insights into endangerment and conservation of the garlic-fruit tree (Malania oleifera), a plant species with extremely small populations

doi:10.1093/gigascience/giae070

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	Genomic insights into endangerment and conservation of the garlic-fruit tree (Malania oleifera), a plant species with extremely small populations
	Shen, Yuanting; Tao, Lidan; Zhang, Rengang; Yao, Gang; Zhou, Minjie; Sun, Weibang; Ma, Yongpeng
	2024
发表期刊	GIGASCIENCE
ISSN	2047-217X
卷号	13 页码:giae070
摘要	Background Advanced whole-genome sequencing techniques enable covering nearly all genome nucleotide variations and thus can provide deep insights into protecting endangered species. However, the use of genomic data to make conservation strategies is still rare, particularly for endangered plants. Here we performed comprehensive conservation genomic analysis for Malania oleifera, an endangered tree species with a high amount of nervonic acid. We used whole-genome resequencing data of 165 samples, covering 16 populations across the entire distribution range, to investigate the formation reasons of its extremely small population sizes and to evaluate the possible genomic offsets and changes of ecology niche suitability under future climate change.Results Although M. oleifera maintains relatively high genetic diversity among endangered woody plants (theta pi = 3.87 x 10-3), high levels of inbreeding have been observed, which have reduced genetic diversity in 3 populations (JM, NP, and BM2) and caused the accumulation of deleterious mutations. Repeated bottleneck events, recent inbreeding (similar to 490 years ago), and anthropogenic disturbance to wild habitats have aggravated the fragmentation of M. oleifera and made it endangered. Due to the significant effect of higher average annual temperature, populations distributed in low altitude exhibit a greater genomic offset. Furthermore, ecological niche modeling shows the suitable habitats for M. oleifera will decrease by 71.15% and 98.79% in 2100 under scenarios SSP126 and SSP585, respectively.Conclusions The basic realizations concerning the threats to M. oleifera provide scientific foundation for defining management and adaptive units, as well as prioritizing populations for genetic rescue. Meanwhile, we highlight the importance of integrating genomic offset and ecological niche modeling to make targeted conservation actions under future climate change. Overall, our study provides a paradigm for genomics-directed conservation.
DOI	10.1093/gigascience/giae070
WOS记录号	WOS:001319247800001
引用统计	被引频次：5[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/75954
专题	中国科学院昆明植物研究所
推荐引用方式 GB/T 7714	Shen, Yuanting,Tao, Lidan,Zhang, Rengang,et al. Genomic insights into endangerment and conservation of the garlic-fruit tree (Malania oleifera), a plant species with extremely small populations[J]. GIGASCIENCE,2024,13:giae070.
APA	Shen, Yuanting.,Tao, Lidan.,Zhang, Rengang.,Yao, Gang.,Zhou, Minjie.,...&Ma, Yongpeng.(2024).Genomic insights into endangerment and conservation of the garlic-fruit tree (Malania oleifera), a plant species with extremely small populations.GIGASCIENCE,13,giae070.
MLA	Shen, Yuanting,et al."Genomic insights into endangerment and conservation of the garlic-fruit tree (Malania oleifera), a plant species with extremely small populations".GIGASCIENCE 13(2024):giae070.

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