气候变化领域集成服务门户(CCPortal): Genetic basis of local adaptation in the cold-tolerant mangrove Kandelia obovata

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DOI	10.3389/fpls.2024.1385210
	Genetic basis of local adaptation in the cold-tolerant mangrove Kandelia obovata
	Zou, Chuangchao; Wang, Yushuai; Zhou, Renchao; Tang, Tian
发表日期	2024
ISSN	1664-462X
起始页码	15
卷号	15
英文摘要	Understanding the genetic basis of local adaption is crucial in the context of global climate change. Mangroves, as salt-tolerant trees and shrubs in the intertidal zone of tropical and subtropical coastlines, are particularly vulnerable to climate change. Kandelia obovata, the most cold-tolerant mangrove species, has undergone ecological speciation from its cold-intolerant counterpart, Kandelia candel, with geographic separation by the South China Sea. In this study, we conducted whole-genome re-sequencing of K. obovata populations along China's southeast coast, to elucidate the genetic basis responsible for mangrove local adaptation to climate. Our analysis revealed a strong population structure among the three K. obovata populations, with complex demographic histories involving population expansion, bottleneck, and gene flow. Genome-wide scans unveiled pronounced patterns of selective sweeps in highly differentiated regions among pairwise populations, with stronger signatures observed in the northern populations compared to the southern population. Additionally, significant genotype-environment associations for temperature-related variables were identified, while no associations were detected for precipitation. A set of 39 high-confidence candidate genes underlying local adaptation of K. obovata were identified, which are distinct from genes under selection detected by comparison between K. obovata and its cold-intolerant relative K. candel. These results significantly contribute to our understanding of the genetic underpinnings of local adaptation in K. obovata and provide valuable insights into the evolutionary processes shaping the genetic diversity of mangrove populations in response to climate change.
英文关键词	local adaptation; population genomics; demographic history; selective sweeps; genome-environment association; mangroves
语种	英语
WOS研究方向	Plant Sciences
WOS类目	Plant Sciences
WOS记录号	WOS:001215606600001
来源期刊	FRONTIERS IN PLANT SCIENCE
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/309913
作者单位	Sun Yat Sen University; Sun Yat Sen University
推荐引用方式 GB/T 7714	Zou, Chuangchao,Wang, Yushuai,Zhou, Renchao,et al. Genetic basis of local adaptation in the cold-tolerant mangrove Kandelia obovata[J],2024,15.
APA	Zou, Chuangchao,Wang, Yushuai,Zhou, Renchao,&Tang, Tian.(2024).Genetic basis of local adaptation in the cold-tolerant mangrove Kandelia obovata.FRONTIERS IN PLANT SCIENCE,15.
MLA	Zou, Chuangchao,et al."Genetic basis of local adaptation in the cold-tolerant mangrove Kandelia obovata".FRONTIERS IN PLANT SCIENCE 15(2024).