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Intra- and inter-sexual competition of Populus cathayana under different watering regimes
Chen, Juan1,2,3; Duan, Baoli4; Wang, Maolin2; Korpelainen, Helena5; Li, Chunyang4
Corresponding AuthorLi, Chunyang
2014
Source PublicationFUNCTIONAL ECOLOGY
ISSN0269-8463
EISSN1365-2435
Volume28Issue:1Pages:124-136
SubtypeArticle
Abstract1Previous 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.
KeywordN-15 Trace Competition Dioecy Nitrogen-use Efficiency Photosynthesis Capacity Water-use Efficiency
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
DOI10.1111/1365-2435.12180
WOS Subject ExtendedEnvironmental Sciences & Ecology
Indexed BySCI
WOS KeywordCARBON-ISOTOPE DISCRIMINATION ; PLANT-SPECIES DIVERSITY ; HERB MERCURIALIS-ANNUA ; DROUGHT STRESS ; USE EFFICIENCY ; ELEVATED CO2 ; DIOECIOUS GRASS ; GAS-EXCHANGE ; PHYSIOLOGICAL-RESPONSES ; PHOTOSYNTHETIC CAPACITY
Language英语
Quartile2区
TOP
WOS SubjectEcology
WOS IDWOS:000331083900013
Funding OrganizationNational Key Basic Research Program of China(2012CB416901) ; Key Program of the National Natural Science Foundation of China(30930075) ; Young Talent Team Program of the Institute of Mountain Hazards and Environment(SDSQB-2012-01)
Citation statistics
Cited Times:52[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/9963
Collection山地表生过程与生态调控重点实验室
Affiliation1.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
Recommended Citation
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.
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