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Sex-specific responses of bud burst and early development to nongrowing season warming and drought in Populus cathayana
Yu, Lei1,2; Han, Yan1,2; Jiang, Yonglei1,2; Dong, Tingfa3,4; Lei, Yanbao1
2018
Source PublicationCANADIAN JOURNAL OF FOREST RESEARCH
ISSN0045-5067
EISSN1208-6037
Volume48Issue:1Pages:68-76
SubtypeArticle
AbstractBud burst is one of the most observable phenological stages in tree species, and its responses to environmental factors are found to be species-specific. Nevertheless, for dioecious plants, whether the bud burst responses are sex specific remains an open question, as do the underlying physiological mechanisms. Here, we investigated the effect of elevated temperature (+2 degrees C) and drought (30% field capacity) during December-March on bud development, gas exchange, water and nitrogen status, and carbohydrate metabolism in female and male Populus cathayana to understand how nongrowing season warming and drought modifies physiological and phenological traits. Our results showed that at ambient temperature, males experienced earlier bud burst than females. Winter warming significantly delayed bud burst and even synchronized it for both sexes because of the greater responsiveness of males. Although drought exerted little effect on the timing of bud burst, it significantly reduced bud fresh mass and limited bud growth by decreasing gas exchange capacity and nonstructural carbohydrate (NSC) accumulation; moreover, females were more affected by drought stress. The significant sex x watering x temperature interactions for delta C-13 and NSC indicate that sexual dimorphism in these condition-specific traits would increase along the environmental gradients, implying contrasting life history strategies in different ecological scenarios. The convergence in the time for bud burst caused by elevated temperature might exaggerate the competition among males, thus influencing the sex ratio, structure, and functioning of P. cathayana populations.
KeywordBud Burst Nongrowing Season Warming And Drought Dioecious Plant
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
DOI10.1139/cjfr-2017-0259
WOS Subject ExtendedForestry
Indexed BySCI
WOS KeywordWATER-USE EFFICIENCY ; SPRING PHENOLOGY ; CLIMATE-CHANGE ; PHYSIOLOGICAL-RESPONSES ; ALTITUDINAL GRADIENT ; DIOECIOUS PLANTS ; CO2 ENRICHMENT ; CARBON-DIOXIDE ; TEMPERATURE ; NITROGEN
Language英语
Quartile3区
TOP
WOS SubjectForestry
WOS IDWOS:000419138600007
Funding OrganizationNational Science Foundation of China(31370607) ; Open Project Program from the CAS Key Laboratory of Mountain Surface Processes and Ecological Regulation
PublisherCANADIAN SCIENCE PUBLISHING, NRC RESEARCH PRESS
Citation statistics
Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/20811
Collection山地表生过程与生态调控重点实验室
Corresponding AuthorLei, Yanbao
Affiliation1.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Surface Proc & Ecol Regulat, Chengdu 610041, Sichuan, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China
3.China West Normal Univ, Minist Educ, Key Lab Southwest China Wildlife Resources Conser, Nanchong 637009, Sichuan, Peoples R China
4.China West Normal Univ, Coll Life Sci, Nanchong 637009, Sichuan, Peoples R China
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Corresponding Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
Yu, Lei,Han, Yan,Jiang, Yonglei,et al. Sex-specific responses of bud burst and early development to nongrowing season warming and drought in Populus cathayana[J]. CANADIAN JOURNAL OF FOREST RESEARCH,2018,48(1):68-76.
APA Yu, Lei,Han, Yan,Jiang, Yonglei,Dong, Tingfa,&Lei, Yanbao.(2018).Sex-specific responses of bud burst and early development to nongrowing season warming and drought in Populus cathayana.CANADIAN JOURNAL OF FOREST RESEARCH,48(1),68-76.
MLA Yu, Lei,et al."Sex-specific responses of bud burst and early development to nongrowing season warming and drought in Populus cathayana".CANADIAN JOURNAL OF FOREST RESEARCH 48.1(2018):68-76.
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