Characterization of Variovorax Strain C6d Isolated from the Algae-bacteria Consortia

Date Received: Sep 24, 2020

Date Published: Oct 29, 2021

DOI: https://doi.org/10.31817/vjas.2021.4.3.07

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Issue: Vol. 4 No. 3 (2021): Vietnam Journal of Agricultural Sciences

Section:

NATURAL RESOURCES AND ENVIRONMENT

How to Cite:

Hoan, V. (2021). Characterization of Variovorax Strain C6d Isolated from the Algae-bacteria Consortia. Vietnam Journal of Agricultural Sciences, 4(3), 11168–1175. https://doi.org/10.31817/vjas.2021.4.3.07

Characterization of Variovorax Strain C6d Isolated from the Algae-bacteria Consortia

Vu Thi Hoan (*) 1

  • Corresponding author: thihoan.vu@gmail.com
  • 1 Faculty of Natural Resources and Environment, Vietnam National University of Agriculture, Hanoi 131000, Vietnam

    • Keywords

    Variovorax, Characterization, algae-bacteria consortia

    Abstract


    The rhizosphere microorganisms can form beneficial, pathogenic, or neutral relationships. These relationships can promote plant growth and productivity. Among them, a number of Variovorax isolates from the rhizosphere were isolated. Bacteria Variovorax strain C6d (AB552893) was isolated from the non axenic culture of Chlorella spp., C6. The cell was Gram-negative, motile, non-spore-forming, short and rod-shaped (0.5-1.0x1.5-2.0µm). Colonies were in white colour after 7 days on 10-fold diluted Nutrient Broth. The strain was able to tolerate NaCL to 1.0% but not to 4.0% of NaCl. It grew quite well at temperatures ranging from 10°C to 37°C, yet did not show any growth at 4°C and 42°C. The dominant isoprenoid quinone was ubiquinone 8 (Q8). The major fatty acid composition of this strain was summed feature 3, 16:0 and 18:1:w7. The DNA G+C content of strain C6d was 70.4 mol%.

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