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Autotoxicity of root exudates varies with species identity and soil phosphorus
Sun, Zhen-Kai; He, Wei-Ming
2019
发表期刊ECOTOXICOLOGY
ISSN0963-9292
卷号28期号:4页码:429-434
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.
关键词Competition Plant species identity Root exudate autotoxicity Soil P availability Stoichiometry
学科领域Ecology ; Environmental Sciences ; Toxicology
DOI10.1007/s10646-019-02035-z
收录类别SCI
语种英语
WOS关键词ALLELOPATHIC COMPOUNDS ; CENTAUREA-MACULOSA ; PLANTS ; LIMITATION ; RHIZOSPHERE ; MECHANISM ; EXTRACTS ; INVASION ; GROWTH
WOS研究方向Environmental Sciences & Ecology ; Toxicology
WOS记录号WOS:000467546400006
出版者SPRINGER
文献子类Article
出版地DORDRECHT
EISSN1573-3017
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]
作者邮箱weiminghe@ibcas.ac.cn
引用统计
被引频次:13[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符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.[Sun, Zhen-Kai
2.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China
3.Chinese Acad Forestry, Res Inst Forestry, Beijing 100091, Peoples R China
4.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China
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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.
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