您的账号已在其他设备登录,您当前账号已强迫下线,
如非您本人操作,建议您在会员中心进行密码修改

确定

Paraliobacillus ryukyuensis gen. nov., sp. nov., a new Gram-positive, slightly halophilic, extremely halotolerant, facultative anaerobe isolated from a decomposing marine alga

摘要:

A slightly halophilic, extremely halotolerant, alkaliphilic, and facultatively anaerobic rod bacterium was isolated from a decomposing marine alga collected in Okinawa, Japan. The isolate, designated O15-7~T, was Gram-positive, endospore-forming, catalase-positive, menaquinone-7-possessing bacterium that is motile by peritrichous flagella. The isolate was aninhibitant of marine environments; the optimum NaCl concentration for growth was 0.75-3.0% (w/v) with a range of 0-22.0%, and the optimum pH was 7.0-8.5 with a range of 5.5-9.5. Catalase was producedin aerobic cultivation but not in anaerobic cultivation. Carbohydrate, sugar alcohol or a related carbon compound was required for growth. In aerobic cultivation, the isolate produced pyruvate, acetate and CO_2 from glucose, and in anaerobic cultivation, it produced lactate, formate, acetate and ethanol with a molar ratio of approximately 2:1:1 for the last three products.No gas was produced anaerobically. Lactate yield per consumed glucose was markedly affected by the pH of the fermentation medium :51% at pH 6.5 and 8% at pH 9.0. The cell-wall petidoglycan contained meso-diaminopimellic acid.Phylogenetically, the isolate occupied an independent lineage within the group composed of the halophilic/halotolerant/alkaliphilic and/or alkalitolerant species in Bacillus rRNA group 1 with the highest 16S rRNA gene sequence similarity of 95.2% to the genus Gracilibacillus. For this isolate, Paraliobacillus ryukyuensis en. nov., sp. nov. was proposed. The type strain, 015-7~T (G + C = 35.6%), has been deposited in the DSMZ, IAM, NBRC, and NRIC (DSM 15140~T = IAM 15001~T = NBRC 10001~T = NRIC 020~T).

更多
作者单位: Department of Fermentation Science, Faculty of Applied Bio-Science, Tokyo University of Agriculture, Setagaya-ku, Tokyo 156-8502,Japan [1]
DOI: 10.1016/j.susc.2005.10.021
发布时间: 2013-01-01
翻译满意度评价:
提交
  • 浏览:65

相似文献

  • 中文期刊
  • 外文期刊
  • 学位论文
  • 会议论文

加载中!

加载中!

加载中!

加载中!