DOI: 10.1111/gcb.12990
论文题名: Elevated temperature is more effective than elevated [CO<inf>2</inf>] in exposing genotypic variation in Telopea speciosissima growth plasticity: Implications for woody plant populations under climate change
作者: Huang G. ; Rymer P.D. ; Duan H. ; Smith R.A. ; Tissue D.T.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2015
卷: 21, 期: 10 起始页码: 3800
结束页码: 3813
语种: 英语
英文关键词: Elevated temperature
; Elevated [CO2 ]
; Genotypes
; Growth
; Intraspecific variation
; Phenotypic plasticity
; Physiology
; Proteaceae
; Woody species
Scopus关键词: carbon dioxide
; climate change
; climate effect
; genotype
; growth
; intraspecific variation
; phenotypic plasticity
; physiology
; shrub
; temperature effect
; Proteaceae
; Telopea speciosissima
; carbon dioxide
; climate change
; genetics
; genotype
; genotype environment interaction
; growth, development and aging
; New South Wales
; phenotype
; Proteaceae
; temperature
; Carbon Dioxide
; Climate Change
; Gene-Environment Interaction
; Genotype
; New South Wales
; Phenotype
; Proteaceae
; Temperature
英文摘要: Intraspecific variation in phenotypic plasticity is a critical determinant of plant species capacity to cope with climate change. A long-standing hypothesis states that greater levels of environmental variability will select for genotypes with greater phenotypic plasticity. However, few studies have examined how genotypes of woody species originating from contrasting environments respond to multiple climate change factors. Here, we investigated the main and interactive effects of elevated [CO2 ] (CE ) and elevated temperature (TE ) on growth and physiology of Coastal (warmer, less variable temperature environment) and Upland (cooler, more variable temperature environment) genotypes of an Australian woody species Telopea speciosissima. Both genotypes were positively responsive to CE (35% and 29% increase in whole-plant dry mass and leaf area, respectively), but only the Coastal genotype exhibited positive growth responses to TE . We found that the Coastal genotype exhibited greater growth response to TE (47% and 85% increase in whole-plant dry mass and leaf area, respectively) when compared with the Upland genotype (no change in dry mass or leaf area). No intraspecific variation in physiological plasticity was detected under CE or TE , and the interactive effects of CE and TE on intraspecific variation in phenotypic plasticity were also largely absent. Overall, TE was a more effective climate factor than CE in exposing genotypic variation in our woody species. Our results contradict the paradigm that genotypes from more variable climates will exhibit greater phenotypic plasticity in future climate regimes. © 2015 John Wiley & Sons Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/61920
Appears in Collections: 影响、适应和脆弱性
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作者单位: Hawkesbury Institute for the Environment, University of Western Sydney, Richmond, NSW, Australia; Institute of Ecology and Environmental Science, Nanchang Institute of Technology, Nanchang, Jiangxi, China
Recommended Citation:
Huang G.,Rymer P.D.,Duan H.,et al. Elevated temperature is more effective than elevated [CO<inf>2</inf>] in exposing genotypic variation in Telopea speciosissima growth plasticity: Implications for woody plant populations under climate change[J]. Global Change Biology,2015-01-01,21(10)