Sex-specific competition differently regulates ecophysiological responses and phytoremediation of Populus cathayana under Pb stress

doi:10.1007/s11104-017-3450-3

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部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

	Sex-specific competition differently regulates ecophysiological responses and phytoremediation of Populus cathayana under Pb stress
	Chen, Juan 1,2; Han, Qingquan 1; Duan, Baoli1 ; Korpelainen, Helena 4; Li, Chunyang 3
刊名	PLANT AND SOIL
	2017-12-01
卷号	421 期号:1-2 页码:203-218
关键词	Dioecy Competition Lead Photosynthetic capacity Phosphorus and nitrogen use efficiency Carbohydrates
ISSN号	0032-079X
DOI	10.1007/s11104-017-3450-3
英文摘要	Lead (Pb) contamination seriously threatens agroforestry production and safety. We aim to determine the interactive influence of Pb and sexual competition on the growth performance, photosynthetic and biochemical traits, ultrastructure and phytoremediation-related parameters of males and females. In the present study, eco-physiological responses and phytoremediation traits of Populus cathayana females and males were evaluated under interactive treatments of Pb and competition. There were significant sex-specific competition effects on biomass partition, photosynthetic activities, carbohydrate contents, nitrogen and phosphorus use efficiencies, ultrastructure and phytoremediation under Pb stress. When competition within the same sex was compared, females were more sensitive to Pb stress, while males possessed greater Pb contents, and a higher bioconcentration factor and tolerance index. Under inter-sexual competition, males alleviated competition effects through greater Pb absorption, and lower photosynthetic rates, nutrient use efficiencies and biomass accumulation. Moreover, Pb stress altered competition intensities of both sexes. Sex-specific competition and neighbor effects may regulate responses and phytoremediation under heavy metal stress in dioecious plants. In the future, more attention should be paid on the effects of inter- and intra-sexual competition on dioecious species in the process of forestation and restoration of contaminated soil.
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000417721600017
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/20718]
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
通讯作者	Li, Chunyang
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.Mianyang Normal Univ, Sichuan Prov Key Lab Ecol Secur & Protect, Mianyang 621000, Peoples R China 3.Hangzhou Normal Univ, Coll Life & Environm Sci, Hangzhou 310036, Zhejiang, Peoples R China 4.Univ Helsinki, Dept Agr Sci, Viikki Plant Sci Ctr, POB 27, FI-00014 Helsinki, Finland
推荐引用方式 GB/T 7714	Chen, Juan,Han, Qingquan,Duan, Baoli,et al. Sex-specific competition differently regulates ecophysiological responses and phytoremediation of Populus cathayana under Pb stress[J]. PLANT AND SOIL,2017,421(1-2):203-218.
APA	Chen, Juan,Han, Qingquan,Duan, Baoli,Korpelainen, Helena,&Li, Chunyang.(2017).Sex-specific competition differently regulates ecophysiological responses and phytoremediation of Populus cathayana under Pb stress.PLANT AND SOIL,421(1-2),203-218.
MLA	Chen, Juan,et al."Sex-specific competition differently regulates ecophysiological responses and phytoremediation of Populus cathayana under Pb stress".PLANT AND SOIL 421.1-2(2017):203-218.