Water relations and non-structural carbohydrate responses to the combined effects of defoliation and progressive drought in a dioecious tree
文献类型：期刊论文
| 作者 | Zhang, Yuanbin2 ; Xu, Gang1; Peng, Shuming3; Bai, Jingwen2; Lu, Qi2; Duan, Baoli2
|
| 刊名 | NEW FORESTS
 |
| 出版日期 | 2020-10-13 |
| 页码 | DOI: 10.1007/s11056-020-09811-4 |
| ISSN号 | 0169-4286 |
| 关键词 | Compensatory mechanisms Defoliation Drought Non-structural carbohydrate Water relations |
| DOI | 10.1007/s11056-020-09811-4 |
| 通讯作者 | Duan, Baoli(duanbl@imde.ac.cn) |
| 产权排序 | 1 |
| 文献子类 | Article; Early Access |
| 英文摘要 | Increases in drought frequency and insect defoliation are emerging threats that typically affect the plantation production ofPopulus yunnanensis, which is an endemic dioecious tree species in China. Nevertheless, it is difficult to predict which sex ofP. yunnanensiswill be more affected by the combined effects of water limitations and defoliation. In this study, we examined the combined effects of progressive drought and defoliation on water relations, growth, gas exchange and leaf carbohydrate reserves inP. yunnanensisfemales and males to test whether defoliation alters the effects of drought and and how this response varies between genders. The experimental design included two watering regimes (well-watered and drought-stressed) and two levels of defoliation (leaves untouched and 60% defoliated). Defoliation exacerbated drought stress in females by decreasing photosynthesis, dry mass accumulation and leaf non-structural carbohydrate (NSC) concentration. In contrast, the total biomass of males grown under drought combined with defoliation was not significantly altered when compared to those grown under drought alone. These results suggest that defoliation does not aggravate the drought effects on males. The males presented a high capacity to maintain foliar water status through stomatal control under drought conditions irrespective of defoliation treatment. The conservative water use strategy in males resulted in a gradual reduction in leaf water potential, gas exchange rates and NSC. Our data showed that the different responses of the females and males to drought and defoliation were influenced by plant water status and consequent effects on changes in carbon assimilation and leaf non-structural carbohydrate reserves. |
| 电子版国际标准刊号 | 1573-5095 |
| WOS关键词 | POPULUS-CATHAYANA ; RESOURCE-ALLOCATION ; GROWTH ; MORTALITY ; HERBIVORY ; PHOTOSYNTHESIS ; SEEDLINGS ; SURVIVAL ; GENDER ; STRESS |
| 资助项目 | Sichuan Science and Technology Support Program[2017JY0234] ; Institute of Mountain Hazards and Environment, CAS[SDS-135-1707] ; Alpine Ecosystem Observation and Experiment Station of Mt. Gongga, Institute of Mountain Hazards and Environment, CAS |
| WOS研究方向 | Forestry |
| 语种 | 英语 |
| 出版者 | SPRINGER |
| WOS记录号 | WOS:000577041900001 |
| 资助机构 | Sichuan Science and Technology Support Program ; Institute of Mountain Hazards and Environment, CAS ; Alpine Ecosystem Observation and Experiment Station of Mt. Gongga, Institute of Mountain Hazards and Environment, CAS |
| 源URL | [http://ir.imde.ac.cn/handle/131551/50587]  |
| 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 综合测试与模拟中心 |
| 通讯作者 | Duan, Baoli |
| 作者单位 | 1.Southwest Univ Sci & Technol, Sch Life Sci & Engn, Mianyang 621010, Sichuan, Peoples R China 2.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China 3.Chengdu Univ Technol, State Environm Protect Key Lab Synerget Control &, Coll Environm & Ecol, Chengdu 610059, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Yuanbin,Xu, Gang,Peng, Shuming,et al. Water relations and non-structural carbohydrate responses to the combined effects of defoliation and progressive drought in a dioecious tree[J]. NEW FORESTS,2020:DOI: 10.1007/s11056-020-09811-4. |
| APA | Zhang, Yuanbin,Xu, Gang,Peng, Shuming,Bai, Jingwen,Lu, Qi,&Duan, Baoli.(2020).Water relations and non-structural carbohydrate responses to the combined effects of defoliation and progressive drought in a dioecious tree.NEW FORESTS,DOI: 10.1007/s11056-020-09811-4. |
| MLA | Zhang, Yuanbin,et al."Water relations and non-structural carbohydrate responses to the combined effects of defoliation and progressive drought in a dioecious tree".NEW FORESTS (2020):DOI: 10.1007/s11056-020-09811-4. |
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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