Open AccessCharacterization of Variovorax Strain C6d Isolated from the Algae-bacteria Consortia
Author(s) -
Vũ Thị Hoàn
Publication year - 2021
Publication title -
agricultural sciences
Language(s) - English
Resource type - Journals
ISSN - 2588-1299
DOI - 10.31817/vjas.2021.4.3.07
Subject(s) - axenic , rhizosphere , strain (injury) , bacteria , biology , algae , microbiology and biotechnology , spore , chemistry , botany , food science , genetics , anatomy
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%.