Effects of Azotobacter chroococcum on Barley Seed Germination and Seedling Development
- 1 May 1979
- journal article
- research article
- Published by Microbiology Society in Journal of General Microbiology
- Vol. 112 (1) , 45-51
- https://doi.org/10.1099/00221287-112-1-45
Abstract
When cells or the culture filtrate of A. chroococcum grown on a medium without a source of fixed N were added to barley seeds, they sometimes stimulated the extension of seedling roots. The stimulation apparently was due to a bacterial metabolite as the cells used were non-viable (due to a decrease in pH of the growth medium). There was no evidence that IAA or GA, which were produced by the bacterium, were involved in the stimulation. When the bacterium was grown on a medium containing nitrate, the cells, but not the culture filtrate, always inhibited germination and the extension of seedling roots. This inhibition of germination apparently was due to competition between viable bacteria and seed for available O.This publication has 4 references indexed in Scilit:
- Interaction Between a Soil Fungus and Barley SeedJournal of General Microbiology, 1977
- Effects of some non-pathogenic micro-organisms on the growth of gnotobiotic barley plantsPlant and Soil, 1977
- Phytotoxicity of Acetic Acid Produced in the Anaerobic Decomposition of Wheat StrawJournal of Applied Bacteriology, 1977
- Microbial growth in the rhizosphereSoil Biology and Biochemistry, 1977