DOI: 10.1111/ele.12575
Scopus记录号: 2-s2.0-84959910607
论文题名: Ecological interactions and the fitness effect of water-use efficiency: Competition and drought alter the impact of natural MPK12 alleles in Arabidopsis
作者: Campitelli B.E. ; Des Marais D.L. ; Juenger T.E.
刊名: Ecology Letters
ISSN: 1461023X
EISSN: 1461-0248
出版年: 2016
卷: 19, 期: 4 起始页码: 424
结束页码: 434
语种: 英语
英文关键词: MPK12
; Abiotic-by-biotic interaction
; Competition
; Drought stress
; Fitness
; Gene-by-environment interaction
; Water-use efficiency
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
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. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/107775
Appears in Collections: 气候减缓与适应
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作者单位: Department of Integrative Biology, University of Texas at Austin, Austin, TX, United States; Arnold Arboretum and Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, MA, United States
Recommended Citation:
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]. Ecology Letters,2016-01-01,19(4)