中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Understanding the wide geographic range of a clonal perennial grass: plasticity versus local adaptation

文献类型:SCI/SSCI论文

作者Liu Y. J.; Zhang, L. R.; Xu, X. L.; Niu, H. S.
发表日期2016
关键词delta C-13 ecotype genetic differentiation Leymus chinensis phenotypic plasticity species distribution water use efficiency carbon-isotope discrimination leymus-chinensis poaceae china transect nect phenotypic plasticity foliar delta-c-13 genetic-variation inner-mongolia use efficiency plants populations
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.
出处Aob Plants
8
语种英语
ISSN号2041-2851
DOI标识10.1093/aobpla/plv141
源URL[http://ir.igsnrr.ac.cn/handle/311030/43112]  
专题地理科学与资源研究所_历年回溯文献
推荐引用方式
GB/T 7714
Liu Y. J.,Zhang, L. R.,Xu, X. L.,et al. Understanding the wide geographic range of a clonal perennial grass: plasticity versus local adaptation. 2016.

入库方式: OAI收割

来源:地理科学与资源研究所

浏览0
下载0
收藏0
其他版本

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。