EFFECT OF AFLATOXINS ON N2-FIXER BACTERIA AND RESPONSE OF INFESTED PEANUT SEEDS WITH Aspergillus flavus TO BIOLOGICAL CONTROL | ||||
| Journal of Agricultural Chemistry and Biotechnology | ||||
| Article 1, Volume 29, Issue 11, November 2004, Page 6537-6547 PDF (3.24 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jacb.2004.242708 | ||||
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| Authors | ||||
| H. A. Emara; A. A Abo EI-Soud; Faten M. Mohamed | ||||
| Soils, Water and Environment Res. Inst., Agric. Res. Center, Giza. | ||||
| Abstract | ||||
| UnGer lab conditions, an experiment was conducted to evaluate biological effect of aflatoxins on diazotrophs. Also, a greenhouse experiment was executed to study the effect of dose and time of Bacillus pumilus as a biocontrol agent application on Aspergillus flavus infested peanut yield inoculated with Bradyrhizobium sp. Results indicated that Azotobacter and Azosp < /em>irillum were more sensitive to aflatoxins 81, 82, G1 and G2. However, Rhizobium and Bradyrhizobium were only affected slightly by the aflatoxins 81 and 82 but were most resistant against G1 and G2. Data of pots experiment showed that Bacillus pumilus caused a reduction in Aspergillus infested peanut. This treatment decreased aflatoxin accumulation in root zone and so enhanced nodulation, growth, yields and crude protein of peanut plants. The reduction effect increased with the increasing of bacterial dose. The maximum reduction of aflatoxin (62%) was obtained when the bacterial dose was 80 ml/pot. Also, results indicated that the highest values of nodulation, growth, pod and straw yields were obtained with Bradyrhizobium seed coating plus Bacillus p < /em>umilus when applied at 40 ml/pot after 20 days and 30 days of planting. Data revealed that the maximum inhibition (70%) of aflatoxin formation was obtained when two doses of Bacillus pumilus were added (40 ml/pot of each). The first dose at planting and the second dose after 40 days of planting. | ||||
| Keywords | ||||
| Bradyrhizobium sp; Rhizobium; Azotobacter; Azospirillum; Aflatoxin; Peanut; Arachis hypogea (Arachis); Aspergillus flavus; Bacillus pumilus | ||||
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