Abstract
Flooded rice fields are important sources of atmospheric methane. Aerobic methanotrophs living in the vicinity of rice roots oxidize methane and act as environmental filters. Here, we present genome characteristics of a gammaproteobacterial methanotroph, isolate Sn10-6, which was isolated from a rice rhizosphere of a flooded field in India. Sn10-6 has been identified as a member of a putative novel genus and species within the family Methylococcaceae (Type I methanotrophs). The draft genome of Sn10-6 showed pathways for the following: methane oxidation, formaldehyde assimilation (RuMP), nitrogen fixation, conversion of nitrite to nitrous oxide, and other interesting genes including the ones responsible for survival in the rhizosphere environment. The majority of genes found in this genome were most similar to Methylovulum miyakonese which is a forest isolate. This draft genome provided insight into the physiology, ecology, and phylogeny of this gammaproteobacterial methanotroph.
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Acknowledgments
This work was supported by Department of Biotechnology under the DBT BioCARe programme (BT/BioCARe/06/840/2012) sanctioned to M. C. R and fellowship sanctioned to P. S. P. is acknowledged. CSIR research fellowship to Preeti Arora and Soham Pore is sincerely acknowledged.
Nucleotide sequence accession number
The draft genome sequence of Methylococcaceae bacterium strain Sn10-6 is deposited in the GenBank database under the accession number LAJX00000000.1 and the bioproject is registered as PRJNA278928.
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Rahalkar, M.C., Pandit, P.S., Dhakephalkar, P.K. et al. Genome Characteristics of a Novel Type I Methanotroph (Sn10-6) Isolated from a Flooded Indian Rice Field. Microb Ecol 71, 519–523 (2016). https://doi.org/10.1007/s00248-015-0699-z
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DOI: https://doi.org/10.1007/s00248-015-0699-z