气候变化领域集成服务门户(CCPortal): Ecological interactions and the fitness effect of water-use efficiency: Competition and drought alter the impact of natural MPK12 alleles in Arabidopsis

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DOI	10.1111/ele.12575
	Ecological interactions and the fitness effect of water-use efficiency: Competition and drought alter the impact of natural MPK12 alleles in Arabidopsis
	Campitelli B.E.; Des Marais D.L.; Juenger T.E.
发表日期	2016
ISSN	1461-023X
EISSN	1461-0248
卷号	19 期号:4
英文摘要	The presence of substantial genetic variation for water-use efficiency (WUE) suggests that natural selection plays a role in maintaining alleles that affect WUE. Soil water deficit can reduce plant survival, and is likely to impose selection to increase WUE, whereas competition for resources may select for decreased WUE to ensure water acquisition. We tested the fitness consequences of natural allelic variation in a single gene (MPK12) that influences WUE in Arabidopsis, using transgenic lines contrasting in MPK12 alleles, under four treatments; drought/competition, drought/no competition, well-watered/competition, well-watered/no competition. Results revealed an allele × environment interaction: Low WUE plants performed better in competition, resulting from increased resource consumption. Contrastingly, high WUE individuals performed better in no competition, irrespective of water availability, presumably from enhanced water conservation and nitrogen acquisition. Our findings suggest that selection can influence MPK12 evolution, and represents the first assessment of plant fitness resulting from natural allelic variation at a single locus affecting WUE. © 2016 John Wiley & Sons Ltd/CNRS.
英文关键词	MPK12; Abiotic-by-biotic interaction; Competition; Drought stress; Fitness; Gene-by-environment interaction; Water-use efficiency
学科领域	Arabidopsis; Arabidopsis protein; mitogen activated protein kinase; MPK12 protein, Arabidopsis; nitrogen; water; Arabidopsis; drought; genetic selection; genetic variation; genetics; metabolism; reproductive fitness; Arabidopsis; Arabidopsis Proteins; Droughts; Genetic Fitness; Genetic Variation; Mitogen-Activated Protein Kinases; Nitrogen; Selection, Genetic; Water
语种	英语
scopus关键词	Arabidopsis; Arabidopsis protein; mitogen activated protein kinase; MPK12 protein, Arabidopsis; nitrogen; water; Arabidopsis; drought; genetic selection; genetic variation; genetics; metabolism; reproductive fitness; Arabidopsis; Arabidopsis Proteins; Droughts; Genetic Fitness; Genetic Variation; Mitogen-Activated Protein Kinases; Nitrogen; Selection, Genetic; Water
来源期刊	Ecology Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/118568
作者单位	Department of Integrative Biology, University of Texas at Austin, Austin, TX 78712, United States; Arnold Arboretum and Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, MA 02138, United States
推荐引用方式 GB/T 7714	Campitelli B.E.,Des Marais D.L.,Juenger T.E.. Ecological interactions and the fitness effect of water-use efficiency: Competition and drought alter the impact of natural MPK12 alleles in Arabidopsis[J],2016,19(4).
APA	Campitelli B.E.,Des Marais D.L.,&Juenger T.E..(2016).Ecological interactions and the fitness effect of water-use efficiency: Competition and drought alter the impact of natural MPK12 alleles in Arabidopsis.Ecology Letters,19(4).
MLA	Campitelli B.E.,et al."Ecological interactions and the fitness effect of water-use efficiency: Competition and drought alter the impact of natural MPK12 alleles in Arabidopsis".Ecology Letters 19.4(2016).