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Int J Syst Evol Microbiol. 2017 Aug;67(8):3071-3076. doi: 10.1099/ijsem.0.002084. Epub 2017 Aug 18.

Blastomonas fulva sp. nov., aerobic photosynthetic bacteria isolated from a Microcystis culture.

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1​Cell factory Research Centre, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 34141, Republic of Korea.
2​Culture Collection Team, Freshwater Bioresources Culture Research Division, Nakdonggang National Institute of Biological Resources, Sangju 37242, Republic of Korea.
3​College of Biology and the Environment, Co-Innovation Centre for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing 210-037, PR China.


Two Gram-stain-negative, aerobic, non-motile, non-spore-forming and rod-shaped bacteria, designated strains T2T and T5, were isolated from a culture of Microcystis from Daejeon, Republic of Korea. Comparative 16S rRNA gene sequence studies placed the new isolates in the class Alphaproteobacteria and, notably, most closely related to Blastomonasaquatica PE 4-5T, Blastomonas natatoria DSM 3183T and Blastomonas ursincola KR-99T showing 99.4 %, 98.2 % and 97.9 % 16S rRNA gene sequence similarities, respectively. The two novel strains shared 100 % similarity with each other. The cells of strains T2T and T5 formed yellow colonies on R2A agar and contained Q-10 as the only ubiquinone, sphingoglycolipid, phosphatidylethanolamine, phosphatidylcholine, and phosphatidylglycerol as major polar lipids, and C17 : 1ω6c, summed feature 8 (C18 : 1ω7c and/or C18 : 1ω6c), C17 : 1ω8c and C17 : 0 as the major fatty acids (>5 %). The DNA G+C content of the genomes was determined to be 64.2 mol% for strain T2T and 64.4 mol% for strain T5. The DNA-DNA hybridization values of strains T2T and T5 with B.aquatica PE 4-5T, B. natatoria DSM 3183T, and B. ursincola KR-99T were 19.7-42.4 %. Based on the combined genotypic and phenotypic data, we propose that strains T2T and T5 represent a novel species of the genus Blastomonas, for which the name Blastomonas fulvasp. nov. is proposed. The type strain is T2T (=KCTC 42354T=JCM 30467T).

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