Intra- and intersexual interactions shape microbial community dynamics in the rhizosphere of Populus cathayana females and males exposed to excess Zn

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Liu , M , Wang , Y , Liu , X , Korpelainen , H & Li , C 2021 , ' Intra- and intersexual interactions shape microbial community dynamics in the rhizosphere of Populus cathayana females and males exposed to excess Zn ' , Journal of Hazardous Materials , vol. 402 , 123783 . https://doi.org/10.1016/j.jhazmat.2020.123783

Title: Intra- and intersexual interactions shape microbial community dynamics in the rhizosphere of Populus cathayana females and males exposed to excess Zn
Author: Liu, Miao; Wang, Yuting; Liu, Xiucheng; Korpelainen, Helena; Li, Chunyang
Contributor: University of Helsinki, Department of Agricultural Sciences
University of Helsinki, Hangzhou Normal Univ, Hangzhou Normal University, Coll Life & Environm Sci
Date: 2021-01-15
Language: eng
Number of pages: 12
Belongs to series: Journal of Hazardous Materials
ISSN: 0304-3894
URI: http://hdl.handle.net/10138/323974
Abstract: In this study, we intended to investigate the responses of rhizospheric bacterial communities of Populus cathayana to excess Zn under different planting patterns. The results suggested that intersexual and intrasexual interactions strongly affect plant growth and Zn extraction in both sexes, as well as rhizosphere-associated bacterial com-munity structures. Females had a higher capacity of Zn accumulation and translocation than males under all planting patterns. Males had lower Zn accumulation and translocation under intersexual than under intrasexual interaction; the contrary was true for females. Females harbored abundant Streptomyces and Nocardioides in their rhizosphere, similarly to males under intersexual interaction, but differed from single-sex males under excess Zn. Conversely, intersexual interaction increased the abundance of key taxa Actinomycetales and Betaproteobacteria in both sexes exposed to excess Zn. Males improved the female rhizospheric microenvironment by increasing the abundance of some key tolerance taxa of Chloroflexi, Proteobacteria and Actinobacteria in both sexes under excess Zn in intersexual interaction. These results indicated that the sex of neighboring plants affected sexual differences in the choice of specific bacterial colonizations for phytoextraction and tolerance to Zn-contaminated soils, which might regulate the spatial segregation and phytoremediation potential of P. cathayana females and males under heavy metal contaminated soils.
Subject: Sexual interaction
Excess Zn
Bacterial abundance
Bacterial community
Rhizosphere
INTER-SEXUAL COMPETITION
HEAVY-METALS
STATISTICAL-ANALYSIS
BACTERIAL DIVERSITY
PLANT-GROWTH
SOIL
CADMIUM
RESPONSES
STRESS
PHYTOREMEDIATION
1172 Environmental sciences
1181 Ecology, evolutionary biology
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