Sex-specific responses of bud burst and early development to nongrowing season warming and drought in Populus cathayana
文献类型：期刊论文
| 作者 | Yu, Lei1,2; Han, Yan1,2; Jiang, Yonglei1,2; Dong, Tingfa3,4; Lei, Yanbao1
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| 刊名 | CANADIAN JOURNAL OF FOREST RESEARCH
 |
| 出版日期 | 2018 |
| 卷号 | 48期号:1页码:68-76 |
| 关键词 | Bud Burst Nongrowing Season Warming And Drought Dioecious Plant |
| ISSN号 | 0045-5067 |
| DOI | 10.1139/cjfr-2017-0259 |
| 通讯作者 | Yanbao Lei |
| 英文摘要 | Bud 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. |
| 语种 | 英语 |
| WOS记录号 | WOS:000419138600007 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/20811]  |
| 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, 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 |
| 推荐引用方式 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. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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