Assembly and variation of root-associated microbiota of rice during their vegetative growth phase with and without linda
- PDF / 1,961,177 Bytes
- 13 Pages / 595.276 x 785.197 pts Page_size
- 51 Downloads / 153 Views
https://doi.org/10.1007/s42832-020-0063-1
RESEARCH ARTICLE
Assembly and variation of root-associated microbiota of rice during their vegetative growth phase with and without lindane pollutant Jiayin Feng1,2, Ashley E. Franks3,4, Zhijiang Lu1,2, Jianming Xu1,2, Yan He1,2 ,* 1 Institute of Soil and Water Resources and Environmental Science, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China 2 Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Hangzhou 310058, China 3 Department of Physiology, Anatomy and Microbiology, La Trobe University, Bundoora, Victoria, 3086, Australia 4 Centre for Future Landscapes, La Trobe University, Bundoora, Victoria, 3086, Australia
HIGHLIGHTS
GRAPHICAL
ABSTRACT
• Rice microbiota responded to lindane pollutant was studied spatiotemporally. • Growth time, soil types and rhizo-compartments had significant influence. • Lindane stimulated the endosphere microbiota of rice which was highly dynamic. • Root–soil–microbe interactions induced an inhibited redox-coupled lindane removal. • This work was beneficial to better regulation of plant growth against adversity.
ARTICLE INFO Article history:
ABSTRACT
Received May 29, 2020 Revised August 24, 2020 Accepted September 9, 2020 Keywords: Lindane pollutant Rice (Oryza sativa L.) Root-associated microbiota Root–microbe–soil interaction Vegetative growth phase Metagenome functions
Soil-derived microbiota associated with plant roots are conducive to plant growth and stress resistance. However, the spatio-temporal dynamics of microbiota in response to organochlorine pollution during the unstable vegetative growth phase of rice is not well understood. In this study, we focused on the rice (Oryza sativa L.) microbiota across the bulk soil, rhizosphere and endosphere compartments during the vegetative growth phase in two different soils with and without lindane pollutant. The results showed that the factors of growth time, soil types and rhizo-compartments had significant influence on the microbial communities of rice, while lindane mostly stimulated the construction of endosphere microbiota at the vegetative phase. Active rice root-soil-microbe interactions induced an inhibition effect on lindane removal at the later vegetative growth phase in rice-growth-dependent anaerobic condition, likely due to the root oxygen loss and microbial mediated co-occurring competitive electron-consuming redox processes in soils. Each rhizocompartment owned distinct microbial communities, and therefore, presented specific ecologically functional categories, while the moderate functional differences were also affected by plants species and residual pollution stress. This work revealed the underground micro-ecological process of microbiota and especially their potential linkage to the natural attenuation of residual organochlorine such as lindane. © Higher Education Press 2020
* Corresponding author E-mail address: [email protected] (Y. He)
2
1 Introduction Plants assemble microbial populations in th
Data Loading...
