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Title: Host-specific and tissue-dependent orchestration of microbiome community structure in traditional rice paddy ecosystems

Abstract

Abstract Background and aim Rice and duckweed are two monocotyledonous plants that naturally coexist in paddy fields. While the presence of duckweed in paddy fields significantly improves rice productivity, the interplay between soil microbes and the two plant hosts in this agroecosystem remains unexplored. Methods We compared the bacterial community structure between duckweed, rice and soil from multiple rice paddies. We also isolated bacteria from these communities and characterized their modes of bacterial colonization and plant growth-promotion using model plants. Results Our data indicate that host-specific and tissue-dependent factors reproducibly orchestrate the bacterial community structure associated with their plant hosts. This is corroborated by results from culture-dependent approaches in which the dominant genus Pantoea isolated from rice aerial tissues can strongly attach and colonize gnotobiotic duckweed in spite of the low representation of this bacterial genus in the natural duckweed microbiome. Our study identified a core of 254 bacterial taxa that are consistently found in all rice and duckweed tissue samples from rice paddy fields. Furthermore, characterizing auxin-producing bacteria isolates from both plant species identified potential plant growth-promoting bacteria that may improve growth for both duckweed and rice in paddy fields. Conclusions Results from this work provide evidence for themore » importance of the host tissue and species context in determining plant colonization by microbes in the paddy field system. The resources generated in this study could facilitate the agronomic deployment of microbes for more sustainable rice production.« less

Authors:
; ; ; ; ; ; ORCiD logo
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1631466
Grant/Contract Number:  
SC0018244
Resource Type:
Published Article
Journal Name:
Plant and Soil
Additional Journal Information:
Journal Name: Plant and Soil Journal Volume: 452 Journal Issue: 1-2; Journal ID: ISSN 0032-079X
Publisher:
Springer Science + Business Media
Country of Publication:
Netherlands
Language:
English

Citation Formats

Huang, Weijuan, Gilbert, Sarah, Poulev, Alexander, Acosta, Kenneth, Lebeis, Sarah, Long, Chunlin, and Lam, Eric. Host-specific and tissue-dependent orchestration of microbiome community structure in traditional rice paddy ecosystems. Netherlands: N. p., 2020. Web. doi:10.1007/s11104-020-04568-3.
Huang, Weijuan, Gilbert, Sarah, Poulev, Alexander, Acosta, Kenneth, Lebeis, Sarah, Long, Chunlin, & Lam, Eric. Host-specific and tissue-dependent orchestration of microbiome community structure in traditional rice paddy ecosystems. Netherlands. https://doi.org/10.1007/s11104-020-04568-3
Huang, Weijuan, Gilbert, Sarah, Poulev, Alexander, Acosta, Kenneth, Lebeis, Sarah, Long, Chunlin, and Lam, Eric. Tue . "Host-specific and tissue-dependent orchestration of microbiome community structure in traditional rice paddy ecosystems". Netherlands. https://doi.org/10.1007/s11104-020-04568-3.
@article{osti_1631466,
title = {Host-specific and tissue-dependent orchestration of microbiome community structure in traditional rice paddy ecosystems},
author = {Huang, Weijuan and Gilbert, Sarah and Poulev, Alexander and Acosta, Kenneth and Lebeis, Sarah and Long, Chunlin and Lam, Eric},
abstractNote = {Abstract Background and aim Rice and duckweed are two monocotyledonous plants that naturally coexist in paddy fields. While the presence of duckweed in paddy fields significantly improves rice productivity, the interplay between soil microbes and the two plant hosts in this agroecosystem remains unexplored. Methods We compared the bacterial community structure between duckweed, rice and soil from multiple rice paddies. We also isolated bacteria from these communities and characterized their modes of bacterial colonization and plant growth-promotion using model plants. Results Our data indicate that host-specific and tissue-dependent factors reproducibly orchestrate the bacterial community structure associated with their plant hosts. This is corroborated by results from culture-dependent approaches in which the dominant genus Pantoea isolated from rice aerial tissues can strongly attach and colonize gnotobiotic duckweed in spite of the low representation of this bacterial genus in the natural duckweed microbiome. Our study identified a core of 254 bacterial taxa that are consistently found in all rice and duckweed tissue samples from rice paddy fields. Furthermore, characterizing auxin-producing bacteria isolates from both plant species identified potential plant growth-promoting bacteria that may improve growth for both duckweed and rice in paddy fields. Conclusions Results from this work provide evidence for the importance of the host tissue and species context in determining plant colonization by microbes in the paddy field system. The resources generated in this study could facilitate the agronomic deployment of microbes for more sustainable rice production.},
doi = {10.1007/s11104-020-04568-3},
journal = {Plant and Soil},
number = 1-2,
volume = 452,
place = {Netherlands},
year = {2020},
month = {6}
}

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