IMHE OpenIR  > 山地表生过程与生态调控重点实验室
Sexual competition affects biomass partitioning, carbon-nutrient balance, Cd allocation and ultrastructure of Populus cathayana females and males exposed to Cd stress
Chen, Juan1,2; Duan, Baoli2; Xu, Gang3; Korpelainen, Helena4; Niinemets, Ulo5; Li, Chunyang6
Corresponding AuthorChunyang Li
2016
Source PublicationTREE PHYSIOLOGY
ISSN0829-318X
EISSN1758-4469
Volume36Issue:11Pages:1353-1368
SubtypeArticle
AbstractAlthough 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.
KeywordCarbohydrates Cd Accumulation Dioecy
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
DOI10.1093/treephys/tpw054
WOS Subject ExtendedForestry
Indexed BySCI
WOS KeywordROOT COMPETITION ; PHYSIOLOGICAL-RESPONSES ; PLANT COMPETITION ; CADMIUM TOLERANCE ; DIOECIOUS GRASS ; SALICYLIC-ACID ; X CANESCENS ; POPLAR ; ACCUMULATION ; NITROGEN
Language英语
Quartile1区
TOP
WOS SubjectForestry
WOS IDWOS:000393052100006
Funding OrganizationNational Key Basic Research Program of China(2012CB416901) ; Young Talent Team Program of the Institute of Mountain Hazards and Environment(SDSQB-2012-01)
Citation statistics
Cited Times:10[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/18391
Collection山地表生过程与生态调控重点实验室
Affiliation1.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
First 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
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.
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