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DOI	10.1093/aobpla/plv141
	Understanding the wide geographic range of a clonal perennial grass: plasticity versus local adaptation
	Liu, Yanjie; Zhang, Lirong; Xu, Xingliang; Niu, Haishan
通讯作者	Niu, HS (通讯作者)
发表日期	2016
ISSN	2041-2851
卷号	8
英文摘要	Both phenotypic plasticity and local adaptation may allow widely distributed plant species to either acclimate or adapt to environmental heterogeneity. Given the typically low genetic variation of clonal plants across their habitats, phenotypic plasticity may be the primary adaptive strategy allowing them to thrive across a wide range of habitats. In this study, the mechanism supporting the widespread distribution of the clonal plant Leymus chinensis was determined, i.e. phenotypic plasticity or local specialization in water use efficiency (WUE; reflected by foliar delta C-13). To test whether plasticity is required for the species to thrive in different habitats, samples were collected across its distribution in the Mongolian steppe, and a controlled watering experiment was conducted with two populations at two different sites. Five populations were also transplanted from different sites into a control environment, and the foliar delta C-13 was compared between the control and original habitats, to test for local specialization in WUE. Results demonstrated decreased foliar delta C-13 with increasing precipitation during controlled watering experiments, with divergent responses between the two populations assessed. Change in foliar delta C-13 (-3.69 parts per thousand) due to water addition was comparable to fluctuations of foliar delta C-13 observed in situ (-4.83 parts per thousand). Foliar delta C-13 differed by -0.91 parts per thousand between two transplanted populations; however, this difference was not apparent between the two populations when growing in their original habitats. Findings provide evidence that local adaptation affects foliar delta C-13 much less than phenotypic plasticity. Thus, plasticity in WUE is more important than local adaptation in allowing the clonal plant L. chinensis to occupy a wide range of habitats in the Mongolian steppe.
关键词	CARBON-ISOTOPE DISCRIMINATION LEYMUS-CHINENSIS POACEAE PHENOTYPIC PLASTICITY FOLIAR DELTA-C-13 GENETIC-VARIATION POPULATIONS LIMITS CHINA INVASIONS PATTERNS
英文关键词	delta C-13; ecotype; genetic differentiation; Leymus chinensis; phenotypic plasticity; species distribution; water use efficiency
语种	英语
WOS研究方向	Plant Sciences ; Environmental Sciences & Ecology
WOS类目	Plant Sciences ; Ecology
WOS记录号	WOS:000369031300003
来源期刊	AOB PLANTS
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/258747
推荐引用方式 GB/T 7714	Liu, Yanjie,Zhang, Lirong,Xu, Xingliang,et al. Understanding the wide geographic range of a clonal perennial grass: plasticity versus local adaptation[J]. 中国科学院青藏高原研究所,2016,8.
APA	Liu, Yanjie,Zhang, Lirong,Xu, Xingliang,&Niu, Haishan.(2016).Understanding the wide geographic range of a clonal perennial grass: plasticity versus local adaptation.AOB PLANTS,8.
MLA	Liu, Yanjie,et al."Understanding the wide geographic range of a clonal perennial grass: plasticity versus local adaptation".AOB PLANTS 8(2016).