Methylobacterium indicum sp. nov., a facultative methylotrophic bacterium isolated from rice seed

Systematic and Applied Microbiology
Vasvi ChaudhrySuresh Korpole

Abstract

Two pink pigmented, Gram-negative, motile, aerobic, rod shaped endophytic bacteria designated as SE2.11(T) and SE3.6 were isolated in different experiments from surface sterilized rice seeds. Both strains grew optimally at 28°C temperature. They were positive for catalase and nitrate reduction. The 16S rRNA gene sequence of the strains SE2.11(T) and SE3.6 displayed between 98.1% and 97.2% similarities with the validly published species of the genus Methylobacterium. The major cellular fatty acid was C18:1 ω7c in both the strains, a characteristic feature observed for members of the genus Methylobacterium. The predominant polar lipids were phospholipids including phosphatidylglycerol (PG), phosphatidylethanolamine (PE) and diphosphatidylglycerol (DPG). Phylogenetic analysis of 16S rRNA gene sequences resulted in the formation of a coherent cluster of strains SE2.11(T) and SE3.6 with closest relative Methylobacterium platani JCM 14648(T). However, digital DNA-DNA hybridization (dDDH) of strains SE2.11(T) and SE3.6 with the closest type strain M. platani JCM 14648(T) revealed similarity of 35.5% and 35.4%, respectively. Further, the ANI analysis of strains SE2.11(T) and SE3.6 genomes revealed only 87.9% identity with M. platani JC...Continue Reading

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Citations

Jan 24, 2020·Microbes and Environments·Khoa LaiShin Okazaki
Mar 4, 2020·Environmental Science and Pollution Research International·Qing WuSen Peng
Apr 2, 2021·Frontiers in Microbiology·Swati BijlaniKasthuri Venkateswaran

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