Nitrogen fixation genes and nitrogenase activity of the non-heterocystous cyanobacterium Thermoleptolyngbya sp. O-77

Ki Seok Yoon, Nga T. Nguyen, Kien Trung Tran, Kohsei Tsuji, Seiji Ogo

    研究成果: ジャーナルへの寄稿学術誌査読

    16 被引用数 (Scopus)

    抄録

    Cyanobacteria are widely distributed in marine, aquatic, and terrestrial ecosystems, and play an important role in the global nitrogen cycle. In the present study, we examined the genome sequence of the thermophilic non-heterocystous N2-fixing cyanobacterium, Thermoleptolyngbya sp. O-77 (formerly known as Leptolyngbya sp. O-77) and characterized its nitrogenase activity. The genome of this cyanobacterial strain O-77 consists of a single chromosome containing a nitrogen fixation gene cluster. A phylogenetic analysis indicated that the NifH amino acid sequence from strain O-77 was clustered with those from a group of mesophilic species: the highest identity was found in Leptolyngbya sp. KIOST-1 (97.9% sequence identity). The nitrogenase activity of O-77 cells was dependent on illumination, whereas a high intensity of light of 40 µmol m-2 s-1 suppressed the effects of illumination.

    本文言語英語
    ページ(範囲)324-329
    ページ数6
    ジャーナルMicrobes and environments
    32
    4
    DOI
    出版ステータス出版済み - 2017

    !!!All Science Journal Classification (ASJC) codes

    • 生態、進化、行動および分類学
    • 土壌科学
    • 植物科学

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