Utilization of several nitrogen sources by photosynthetic bacteria isolated in Vietnam

Do Thi To Uyen, Tran Van Nhi, Nguyen Ngoc Dung, Diethelm Kleiner
Author affiliations

Authors

  • Do Thi To Uyen VAST
  • Tran Van Nhi
  • Nguyen Ngoc Dung
  • Diethelm Kleiner

DOI:

https://doi.org/10.15625/0866-7160/v25n3.6845

Abstract

Twelve strains of photosynthetic bacteria were cultivated on solid agar medium in absence or presence of NH4+ or NO3- under nitrogen air condition. Their nitrogenase activity after 24h of cultivation in liquid medium containing these components was determinated.

The activity of the GOGAT, GS and GluDH enzymes and the NH4+-transport system in cell-free extracts of all strains were found.

The nitrogenase activity, biomass accumulation and NH4+ concentration were followed during the growth of the strain T17.

The obtained experimental results showed that all studied photosynthetic bacteria strains were capable to fix N2. Ammonium and nitrate could be used for the bacterial growth and inhibited nitrogenase at certain concentration.

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Published

02-09-2015

How to Cite

To Uyen, D. T., Nhi, T. V., Dung, N. N., & Kleiner, D. (2015). Utilization of several nitrogen sources by photosynthetic bacteria isolated in Vietnam. Academia Journal of Biology, 25(3), 98–104. https://doi.org/10.15625/0866-7160/v25n3.6845

Issue

Vol. 25 No. 3 (2003)

Section

Articles

License

Academia Journal of Biology (AJB) is an open-access and peer-reviewed journal. The articles published in the AJB are licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND 4.0), which permits for immediate free access to the articles to read, download, copy, non-commercial use, distribution and reproduction in any medium, provided the work is properly cited (with a link to the formal publication through the relevant DOI), and without subscription charges or registration barriers. The full details of the CC BY-NC-ND 4.0 License are available at https://creativecommons.org/licenses/by-nc-nd/4.0/.