Differentiation in drought tolerance mirrors the geographic distributions of alpine plants on the Qinghai-Tibet Plateau and adjacent highlands

doi:10.1038/srep42466

	Differentiation in drought tolerance mirrors the geographic distributions of alpine plants on the Qinghai-Tibet Plateau and adjacent highlands
	Meng, Li-Hua 1; Yang, Jie 1; Guo, Wen 2; Tian, Bin 2; Chen, Guang-Jie 3; Yang, Yong-Ping2 ; Duan, Yuan-Wen2
	2017-02-14
发表期刊	SCIENTIFIC REPORTS
卷号	7 期号:1 页码:42466
摘要	Climatic tolerance, especially drought tolerance, is one of the major factors shaping the geographic distributions of plant species. Thus, the general decline in rainfall from the Himalaya-Hengduan Mountains (HHM) to the inner Qinghai-Tibet Plateau (QTP) might account for the significant differences in species distributions and richness between the two regions. To test this hypothesis, we conducted a water stress experiment using four Anisodus species (A. tanguticus, A. luridus, A. carniolicoides and A. acutangulus), which were treated with different levels of water stress in a glasshouse, and examined their differences in physiological responses. The results suggest that A. tanguticus, which inhabits the inner QTP, generally has higher fitness under severe water stress than the other species based on its high root: shoot ratio, long-term water use efficiency and photosynthetic rate, indicating that it possesses a genetically based drought tolerance mechanism. Our results suggest that plant species inhabiting the inner QTP may be more drought tolerant than those inhabiting the HHM regions. This provides a new example supporting the hypothesis that climatic tolerance plays a major role in shaping plant distributions on the QTP and its adjacent highlands and presents new insights into the patterns of geographic distribution and diversity of the plants inhabiting these areas.
DOI	10.1038/srep42466
收录类别	SCI
语种	英语
WOS记录号	WOS:000393941800002
引用统计
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/46029
专题	资源植物与生物技术所级重点实验室
作者单位	1.Yunnan Normal Univ, Key Lab Yunnan Biomass Energy & Biotechnol Enviro, Sch Life Sci, Kunming 650092, Peoples R China 2.Chinese Acad Sci, Kunming Inst Bot, Kunming 650201, Peoples R China 3.Yunnan Normal Univ, Sch Tourism & Geog, Key Lab Plateau Lake Ecol & Global Change, Kunming 650500, Peoples R China
推荐引用方式 GB/T 7714	Meng, Li-Hua,Yang, Jie,Guo, Wen,et al. Differentiation in drought tolerance mirrors the geographic distributions of alpine plants on the Qinghai-Tibet Plateau and adjacent highlands[J]. SCIENTIFIC REPORTS,2017,7(1):42466.
APA	Meng, Li-Hua.,Yang, Jie.,Guo, Wen.,Tian, Bin.,Chen, Guang-Jie.,...&Duan, Yuan-Wen.(2017).Differentiation in drought tolerance mirrors the geographic distributions of alpine plants on the Qinghai-Tibet Plateau and adjacent highlands.SCIENTIFIC REPORTS,7(1),42466.
MLA	Meng, Li-Hua,et al."Differentiation in drought tolerance mirrors the geographic distributions of alpine plants on the Qinghai-Tibet Plateau and adjacent highlands".SCIENTIFIC REPORTS 7.1(2017):42466.

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