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Rice endophytic communities are strongly dependent on microbial communities specific to each soil

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Abstract

This study aims to investigate the effects of soil as a microbial source on the assemblage of the endophytic bacterial communities in rice roots. Rice seedlings were grown hydroponically with the addition of a permeable bag filled with one of five soil types collected from different geographical locations in Japan. After 3 and 6 weeks, the endophytic bacterial communities in rice roots were analyzed using the Illumina Miseq-based 16SrRNA gene amplicon sequencing method. The results showed that the bacterial community in the soils added as a microbial source differed among the soil types, which affected the bacterial community in the hydroponic solution and consequently reflected in the endophytic bacterial community assemblage. Bacterial diversity and richness differed significantly with respect to the microbial sources. As a result, a conserved group of 16 endophytic bacterial taxa at the genus level, dominated by Burkholderia-Caballeronia-Paraburkholderia, and independent of the soil type were shared across all microbial sources, thereby underlining the ability of rice plants to selectively recruit their endophytic inhabitants. Altogether, this study demonstrates the importance of the microbial source as a crucial driving force for the formation of the endophytic bacterial communities in rice roots.

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The raw 16S rRNA gene amplicon sequence data for this study were deposited in the DDBJ under the following accession number: DRA015220.

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Funding

This work was funded by JSPS KAKENHI Grant Number JP21K14952. The sequencing analysis was the result of using research equipment shared in the MEXT Project for promoting public utilization of advanced research infrastructure (Program for supporting introduction of the new sharing system) at Niigata University, Grant Number JPMXS0421100320.

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Correspondence to Kazuki Suzuki.

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This study does not involve animals.

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The authors declare no competing interests.

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Samuel, S.O., Suzuki, K., Asiloglu, R. et al. Rice endophytic communities are strongly dependent on microbial communities specific to each soil. Biol Fertil Soils 59, 733–746 (2023). https://doi.org/10.1007/s00374-023-01743-3

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  • DOI: https://doi.org/10.1007/s00374-023-01743-3

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