Sexual competition affects biomass partitioning, carbon-nutrient balance, Cd allocation and ultrastructure of Populus cathayana females and males exposed to Cd stress
文献类型：期刊论文
| 作者 | Chen, Juan1,2; Duan, Baoli2 ; Xu, Gang3; Korpelainen, Helena4; Niinemets, Ulo5; Li, Chunyang6
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| 刊名 | TREE PHYSIOLOGY
 |
| 出版日期 | 2016-11-28 |
| 卷号 | 36期号:11页码:1353-1368 |
| 关键词 | carbohydrates Cd accumulation dioecy |
| ISSN号 | 0829-318X |
| 通讯作者 | Chunyang Li |
| 英文摘要 | Although increasing attention has been paid to plant adaptation to soil heavy metal contamination, competition and neighbor effects have been largely overlooked, especially in dioecious plants. In this study, we investigated growth as well as biochemical and ultrastructural responses of Populus cathayana Rehder females and males to cadmium (Cd) stress under different sexual competition patterns. The results showed that competition significantly affects biomass partitioning, photosynthetic capacity, leaf and root ultrastructure, Cd accumulation, the contents of polyphenols, and structural and nonstructural carbohydrates. Compared with single-sex cultivation, plants of opposite sexes exposed to sexual competition accumulated more Cd in tissues and their growth was more strongly inhibited, indicating enhanced Cd toxicity under sexual competition. Under intrasexual competition, females showed greater Cd accumulation, more serious damage at the ultrastructural level and greater reduction in physiological activity than under intersexual competition, while males performed better under intrasexual competition than under intersexual competition. Males improved the female microenvironment by greater Cd uptake and lower resource consumption under intersexual competition. These results demonstrate that the sex of neighbor plants and competition affect sexual differences in growth and in key physiological processes under Cd stress. The asymmetry of sexual competition highlighted here might regulate population structure, and spatial segregation and phytoremediation potential of both sexes in P. cathayana growing in heavy metal-contaminated soils. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
| 类目[WOS] | Forestry |
| 研究领域[WOS] | Forestry |
| 关键词[WOS] | ROOT COMPETITION ; PHYSIOLOGICAL-RESPONSES ; PLANT COMPETITION ; CADMIUM TOLERANCE ; DIOECIOUS GRASS ; SALICYLIC-ACID ; X CANESCENS ; POPLAR ; ACCUMULATION ; NITROGEN |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000393052100006 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/18391]  |
| 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.Mianyang Normal Univ, Ecol Secur & Protect Key Lab Sichuan Prov, Mianyang 621000, Peoples R China 2.Chinese Acad Sci, Key Lab Mt Surface Proc & Ecol Regulat, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China 3.Southwest Univ Sci & Technol, Sch Life Sci, Mianyang 621010, Peoples R China 4.Univ Helsinki, Dept Agr Sci, Viikki Plant Sci Ctr, POB 27, FI-00014 Helsinki, Finland 5.Estonian Univ Life Sci, Inst Agr & Environm Sci, Kreutzwaldi 1, EE-51014 Tartu, Estonia 6.Zhejiang A&F Univ, Nurturing Stn, State Key Lab Subtrop Silviculture, Linan 311300, Zhejiang, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Juan,Duan, Baoli,Xu, Gang,et al. Sexual competition affects biomass partitioning, carbon-nutrient balance, Cd allocation and ultrastructure of Populus cathayana females and males exposed to Cd stress[J]. TREE PHYSIOLOGY,2016,36(11):1353-1368. |
| APA | Chen, Juan,Duan, Baoli,Xu, Gang,Korpelainen, Helena,Niinemets, Ulo,&Li, Chunyang.(2016).Sexual competition affects biomass partitioning, carbon-nutrient balance, Cd allocation and ultrastructure of Populus cathayana females and males exposed to Cd stress.TREE PHYSIOLOGY,36(11),1353-1368. |
| MLA | Chen, Juan,et al."Sexual competition affects biomass partitioning, carbon-nutrient balance, Cd allocation and ultrastructure of Populus cathayana females and males exposed to Cd stress".TREE PHYSIOLOGY 36.11(2016):1353-1368. |
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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