Survival of Bacillus subtilis AF 1 in the bacterized peanut rhizosphere and its influence on native microflora and seedling growth

A mutant of Bacillus subtilis AF 1 (an antifungal strain with plant growth-promoting activity, resistant to 100 μg streptomycin/ml) was isolated from pigeon pea rhizosphere and, when used in peanut bacterization, decreased fungal and bacterial numbers and increased the actinomycete population in the...

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Bibliographic Details
Published in:World journal of microbiology & biotechnology 1994-11, Vol.10 (6), p.700-703
Main Author: PODILE, A. R
Format: Article
Language:English
Subjects:
Agronomy. Soil science and plant productions
Arachis hypogaea
Bacillus subtilis
Biological and medical sciences
Fundamental and applied biological sciences. Psychology
General agronomy. Plant production
Soil-plant relationships. Soil fertility
Soil-plant relationships. Soil fertility. Fertilization. Amendments
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Summary:A mutant of Bacillus subtilis AF 1 (an antifungal strain with plant growth-promoting activity, resistant to 100 μg streptomycin/ml) was isolated from pigeon pea rhizosphere and, when used in peanut bacterization, decreased fungal and bacterial numbers and increased the actinomycete population in the rhizosphere. Over 28 days, AF 1 declined by 0.9 log c.f.u. in sterilized soil and by 2.6 log c.f.u. in native soil. From the seedlings raised with peanut seeds bacterized with AF 1 at 6.5 log c.f.u./seed, 4.1 and 4.7 log c.f.u. of AF 1 were recovered from the rhizosphere and total underground parts, respectively. Bacterization with AF 1 had no significant growth-promoting or -inhibiting effect on the peanut.
ISSN:0959-3993
1573-0972
DOI:10.1007/BF00327964