Intra- and inter-sexual competition of Populus cathayana under different watering regimes

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所 > 山地表生过程与生态调控重点实验室

	Intra- and inter-sexual competition of Populus cathayana under different watering regimes
	Chen, Juan 1,2,3; Duan, Baoli4 ; Wang, Maolin 2; Korpelainen, Helena 5; Li, Chunyang4
刊名	FUNCTIONAL ECOLOGY
	2014-02-01
卷号	28 期号:1 页码:124-136
关键词	N-15 trace competition dioecy nitrogen-use efficiency photosynthesis capacity water-use efficiency
ISSN号	0269-8463
通讯作者	Li, Chunyang
英文摘要	1Previous studies have demonstrated that poplar is sexually dimorphic in its responses to environmental stresses and provided evidence of sex-related differences in protein composition, gene transcription and morphological and physiological processes. However, sexual competition of poplar has not yet been studied. We employed Populus cathayana males and females as a model to investigate intra- and intersexual competition under well-watered condition and drought stress. Our results indicated that competition significantly affected sexual dimorphism of P.cathayana under different watering regimes. Sexual competition was environment-dependent and modified by drought. In females, drought intensified the negative effect of intrasexual competition. Similar resource utilization patterns of females may aggravate pressure for resources under drought stress. Under intersexual competition, females showed a greater competitive ability than males under well-watered condition, while males showed a slight competitive advantage under drought stress. Intersexual competition seems to alleviate the sexual dimorphism of P.cathayana in response to drought stress, as females increase fitness and males decrease fitness compared with intrasexual competition. Sexual dimorphism in resource utilization patterns and niche segregation may contribute to sexual competition in a given environment. Sexual competition was found to affect competitive ability and fitness of both sexes, which may cause spatial segregation of sexes in P.cathyana populations.
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
类目[WOS]	Ecology
研究领域[WOS]	Environmental Sciences & Ecology
关键词[WOS]	CARBON-ISOTOPE DISCRIMINATION ; PLANT-SPECIES DIVERSITY ; HERB MERCURIALIS-ANNUA ; DROUGHT STRESS ; USE EFFICIENCY ; ELEVATED CO2 ; DIOECIOUS GRASS ; GAS-EXCHANGE ; PHYSIOLOGICAL-RESPONSES ; PHOTOSYNTHETIC CAPACITY
收录类别	SCI
语种	英语
WOS记录号	WOS:000331083900013
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/9963]
专题	成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室
作者单位	1.Chinese Acad Sci, Chengdu Inst Biol, Chengdu 610041, Peoples R China 2.Sichuan Univ, Coll Life Sci, Minist Educ, Key Lab Bioresources & Ecoenvironm, Chengdu 610064, Peoples R China 3.Mianyang Normal Univ, Mianyang 621000, Peoples R China 4.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Surface Proc & Ecol Regulat, Chengdu 610041, Peoples R China 5.Univ Helsinki, Dept Agr Sci, FI-00014 Helsinki, Finland
推荐引用方式 GB/T 7714	Chen, Juan,Duan, Baoli,Wang, Maolin,et al. Intra- and inter-sexual competition of Populus cathayana under different watering regimes[J]. FUNCTIONAL ECOLOGY,2014,28(1):124-136.
APA	Chen, Juan,Duan, Baoli,Wang, Maolin,Korpelainen, Helena,&Li, Chunyang.(2014).Intra- and inter-sexual competition of Populus cathayana under different watering regimes.FUNCTIONAL ECOLOGY,28(1),124-136.
MLA	Chen, Juan,et al."Intra- and inter-sexual competition of Populus cathayana under different watering regimes".FUNCTIONAL ECOLOGY 28.1(2014):124-136.