Autotoxicity of root exudates varies with species identity and soil phosphorus

doi:10.1007/s10646-019-02035-z

CORC > 植物研究所 > 中国科学院植物研究所 > 植被与环境变化国家重点实验室

	Autotoxicity of root exudates varies with species identity and soil phosphorus
	Sun, Zhen-Kai ; He, Wei-Ming
刊名	ECOTOXICOLOGY
	2019
卷号	28 期号:4 页码:429-434
关键词	Competition Plant species identity Root exudate autotoxicity Soil P availability Stoichiometry
ISSN号	0963-9292
DOI	10.1007/s10646-019-02035-z
文献子类	Article
英文摘要	Root exudate autotoxicity (i.e. root exudates from a given plant have toxic effects on itself) has been recognized to be widespread. Here we examined how plant species identity and soil phosphorus (P) availability influenced this autotoxicity and the possible stoichiometric mechanisms. We conducted an experiment with three species (Luctuca sativa, Sesbania cannabina, and Solidago canadensis), which were subject to four treatments consisting of activated carbon (AC) and soil P. AC addition increased the whole-plant biomass of each species under high P conditions and this AC effect varied strongly with species identity. For Solidago, the relative increase in whole-plant biomass due to AC addition was larger in the low P than in the high P. Root exudate autotoxicity differed between roots and shoots. AC addition decreased root N:P ratios but failed to influence shoot N:P ratios in three species. These findings suggest that soil P enrichment might mediate root exudate autotoxicity and that this P-mediated autotoxicity might be related to root N and P stoichiometry. These patterns and their implications need to be addressed in the context of plant communities. HighlightsRoot exudate autotoxicity varied with species identity and soil P.Root exudate autotoxicity differed between roots and shoots.P-mediated autotoxicity might be related to N:P ratios.
学科主题	Ecology ; Environmental Sciences ; Toxicology
电子版国际标准刊号	1573-3017
出版地	DORDRECHT
WOS关键词	ALLELOPATHIC COMPOUNDS ; CENTAUREA-MACULOSA ; PLANTS ; LIMITATION ; RHIZOSPHERE ; MECHANISM ; EXTRACTS ; INVASION ; GROWTH
WOS研究方向	Environmental Sciences & Ecology ; Toxicology
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000467546400006
资助机构	Ministry of Science and Technology of the People's Republic of ChinaMinistry of Science and Technology, China [2017YFC1200102] ; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31570538]
内容类型	期刊论文
源URL	[http://ir.ibcas.ac.cn/handle/2S10CLM1/19800]
专题	植被与环境变化国家重点实验室
作者单位	1.Chinese Acad Forestry, Res Inst Forestry, Beijing 100091, Peoples R China 2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China 3.[Sun, Zhen-Kai 4.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China
推荐引用方式 GB/T 7714	Sun, Zhen-Kai,He, Wei-Ming. Autotoxicity of root exudates varies with species identity and soil phosphorus[J]. ECOTOXICOLOGY,2019,28(4):429-434.
APA	Sun, Zhen-Kai,&He, Wei-Ming.(2019).Autotoxicity of root exudates varies with species identity and soil phosphorus.ECOTOXICOLOGY,28(4),429-434.
MLA	Sun, Zhen-Kai,et al."Autotoxicity of root exudates varies with species identity and soil phosphorus".ECOTOXICOLOGY 28.4(2019):429-434.