干旱区生态环境知识资源中心(Arid): Precipitation and local environment shape the geographic variation of seed size across natural populations of sand rice (Agriophyllum squarrosum)

Arid

DOI	10.1093/jxb/erac231
	Precipitation and local environment shape the geographic variation of seed size across natural populations of sand rice (Agriophyllum squarrosum)
	Zhao, Pengshan; Li, Xiaofeng; Ran, Ruilan; Sun, Hong; Zhao, Jiecai; Chen, Guoxiong
通讯作者	Zhao, PS ; Chen, GX
来源期刊	JOURNAL OF EXPERIMENTAL BOTANY
ISSN	0022-0957
EISSN	1460-2431
出版年	2022
卷号	73 期号:16 页码:5682-5697
英文摘要	Sand rice (Agriophyllum squarrosum) is widely distributed on dunes in the Asian interior arid zone, and its large intraspecific trait variation makes it a very good model for investigating the ecological processes underlying its adaptation to the desert environment. In this study, seed size variation across 68 natural populations was used to establish geographic patterns and to quantify the effects of the climate, soil, and collection-year weather variables. The length of the seed major axis and thousand seed weight (TSW) both showed significant longitudinal patterns. Long-term climate variables accounted for most of the explained variances for seed major axis (57.20%) and TSW (91.54%). Specifically, annual precipitation and minimum monthly precipitation had the most significantly positive and negative effects, indicating that longitudinal clines are driven by a precipitation gradient across the species' distribution range. A substantial unique effect of soil variables (27.27%) was found for seed major axis variation, but only 3.64% of TSW variation was explained by soil variables. Two extreme groups were selected to evaluate the genetic and plastic effects on seed size in a common garden experiment. Large-seeded individuals were more competitive in semi-arid regions, and had stronger adaptive plasticity as well as better performance in early seedling establishment, and hence they have potential for use in future domestication projects. Precipitation underlies the longitudinal cline of seed size across the distribution range of sand rice, and large-seeded individuals have strong adaptive plasticity that has potential for use in future domestication.
英文关键词	Agriophyllum squarrosum desert ecosystem geographic pattern intraspecific trait variation precipitation gradient phenotypic plasticity sand rice seed size
类型	Article
语种	英语
开放获取类型	Green Published, hybrid
收录类别	SCI-E
WOS记录号	WOS:000817309200001
WOS关键词	TIBETAN PLATEAU UPLIFT ; GLOBAL PATTERNS ; FOREST HERBS ; PLANT TRAITS ; MASS ; EVOLUTION ; CLIMATE ; DESERT ; TEMPERATURE ; BIOGEOGRAPHY
WOS类目	Plant Sciences
WOS研究方向	Plant Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/393429
推荐引用方式 GB/T 7714	Zhao, Pengshan,Li, Xiaofeng,Ran, Ruilan,et al. Precipitation and local environment shape the geographic variation of seed size across natural populations of sand rice (Agriophyllum squarrosum)[J],2022,73(16):5682-5697.
APA	Zhao, Pengshan,Li, Xiaofeng,Ran, Ruilan,Sun, Hong,Zhao, Jiecai,&Chen, Guoxiong.(2022).Precipitation and local environment shape the geographic variation of seed size across natural populations of sand rice (Agriophyllum squarrosum).JOURNAL OF EXPERIMENTAL BOTANY,73(16),5682-5697.
MLA	Zhao, Pengshan,et al."Precipitation and local environment shape the geographic variation of seed size across natural populations of sand rice (Agriophyllum squarrosum)".JOURNAL OF EXPERIMENTAL BOTANY 73.16(2022):5682-5697.