气候变化领域集成服务门户(CCPortal): Genomic Adaptive Evolution of Sand Rice (Agriophyllum squarrosum) and Its Implications for Desert Ecosystem Restoration

CCPortal

DOI	10.3389/fgene.2021.656061
	Genomic Adaptive Evolution of Sand Rice (Agriophyllum squarrosum) and Its Implications for Desert Ecosystem Restoration
	Qian, Chaoju; Yan, Xia; Fang, Tingzhou; Yin, Xiaoyue; Zhou, Shanshan; Fan, Xingke; Chang, Yuxiao; Ma, Xiao-Fei
通讯作者	Ma, XF (通讯作者)，Chinese Acad Sci, Key Lab Stress Physiol & Ecol Cold & Arid Reg, Dept Ecol & Agr Res, Northwest Inst Ecoenvironm & Resources, Lanzhou, Gansu, Peoples R China. ; Ma, XF (通讯作者)，Nantong Univ, Sch Life Sci, Nantong, Peoples R China.
发表日期	2021
EISSN	1664-8021
卷号	12
英文摘要	Natural selection is a significant driver of population divergence and speciation of plants. Due to local adaptation to geographic regions with ecological gradients, plant populations harbored a wide range of adaptive genetic variation to enable them to survive the heterogeneous habitats. This is all the more necessary for desert plants, as they must tolerant more striking gradients of abiotic stresses. However, the genomic mechanism by which desert plants adapt to ecological heterogeneity remains unclear, which could help to guide the sustainability of desert ecosystems. Here, using restriction-site-associated DNA sequencing in 38 natural populations, we investigated the genomic divergence and environmental adaptation of sand rice, Agriophyllum squarrosum, an annual pioneer species that covers sand dunes in northern China. Population genetic structure analyses showed that sand rice could be divided into three geographically distinct lineages, namely, Northwest, Central, and East. Phylogeographic analyses revealed that the plant might originate locally in Bergen County and further differentiated into the East lineage and then the Central lineage. Ecological niche modeling found that different lineages occupied distinct ecological niches, suggesting that the ecological gradient would have triggered genomic differentiation among sand rice lineages. Ecological association study supported that the three SNPs under divergent selection were closely correlated with precipitation gradients, indicating that precipitation might be the most important stress trigger for lineage diversity in sand rice. These adaptive SNPs could be used to genotype suitable germplasms for the ecological restoration of specific desertified lands. Further analyses found that genetic structure could significantly overestimate the signals for balancing selection. Within the Central lineage, we still found that 175 SNPs could be subject to balancing selection, which could be the means by which sand rice maintains genetic diversity and adapts to multiple stresses across heterogeneous deserts and sandy lands. From a genomic point of view, this study highlighted the local and global adaptation patterns of a desert plant to extreme and heterogeneous habitats. Our data provide molecular guidance for the restoration of desertified lands in the arid and semi-arid regions of China and could facilitate the marker assistant breeding of this potential crop to mitigate climate change.
关键词	LOCAL ADAPTATION POPULATION-STRUCTURE NATURAL-SELECTION CLINAL VARIATION CANDIDATE GENES CLIMATE CHINA DIFFERENTIATION INFERENCE DYNAMICS
英文关键词	sand rice (Agriophyllum squarrosum); environmental heterogeneity; RAD sequencing; balancing selection; desertification reversion
语种	英语
WOS研究方向	Genetics & Heredity
WOS类目	Genetics & Heredity
WOS记录号	WOS:000650174300001
来源期刊	FRONTIERS IN GENETICS
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/253797
作者单位	[Qian, Chaoju; Fang, Tingzhou; Yin, Xiaoyue; Zhou, Shanshan; Fan, Xingke; Ma, Xiao-Fei] Chinese Acad Sci, Key Lab Stress Physiol & Ecol Cold & Arid Reg, Dept Ecol & Agr Res, Northwest Inst Ecoenvironm & Resources, Lanzhou, Gansu, Peoples R China; [Yan, Xia; Ma, Xiao-Fei] Nantong Univ, Sch Life Sci, Nantong, Peoples R China; [Yan, Xia] Chinese Acad Sci, Key Lab Ecohydrol Inland River Basin, Northwest Inst Ecoenvironm & Resources, Lanzhou, Peoples R China; [Fang, Tingzhou; Yin, Xiaoyue; Zhou, Shanshan; Fan, Xingke] Univ Chinese Acad Sci, Coll Resources & Environm, Beijing, Peoples R China; [Chang, Yuxiao] Chinese Acad Agr Sci, Agr Genom Inst Shenzhen, Shenzhen, Peoples R China
推荐引用方式 GB/T 7714	Qian, Chaoju,Yan, Xia,Fang, Tingzhou,et al. Genomic Adaptive Evolution of Sand Rice (Agriophyllum squarrosum) and Its Implications for Desert Ecosystem Restoration[J]. 中国科学院西北生态环境资源研究院,2021,12.
APA	Qian, Chaoju.,Yan, Xia.,Fang, Tingzhou.,Yin, Xiaoyue.,Zhou, Shanshan.,...&Ma, Xiao-Fei.(2021).Genomic Adaptive Evolution of Sand Rice (Agriophyllum squarrosum) and Its Implications for Desert Ecosystem Restoration.FRONTIERS IN GENETICS,12.
MLA	Qian, Chaoju,et al."Genomic Adaptive Evolution of Sand Rice (Agriophyllum squarrosum) and Its Implications for Desert Ecosystem Restoration".FRONTIERS IN GENETICS 12(2021).