Microbiota In Non-flooded And Flooded Rice Culms.
Hui-Ling Cui, Guilan Duan, Hongmei Zhang, Wangda Cheng, Yong-Guan Zhu
Published 2019 · Medicine, Biology
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Rice plants are the habitat for large and diverse populations of microbes, which play important roles on rice health and productivity. However, the response of microbiome on rice culm to water flooding is poorly understood. In this study, the bacterial community on non-flooded (RSA) and flooded (RSB) rice culms was investigated through 16S rRNA gene sequencing. The results showed that RSA and RSB had significantly distinct bacterial communities. In RSA, Gammaproteobacteria and Pantoea were the most abundant class (57%), genus (37.06%), respectively, while in RSB, the most abundant phylum and genus was Firmicutes (54%) and Bacillus (52.63%), respectively. Compared with RSA, the abundance of 27 genera significantly increased and 21 genera significantly decreased in RSB, and some remarkably changed species, such as Aeromonas, Bacillus were identified, which are sensitive to non-flooded or flooded conditions. In addition, rare operational taxonomic units (OTUs) was much more than abundant OTUs in all samples, and RSB had significantly higher bacterial richness than RSA due to having more rare taxa. Our study would advance the insights into the microbiome of rice culms and its response to flooding, which would help to identify potential beneficial bacteria for improving crop health and sustainable productivity in agroecosystems.
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