Biological control of Aspergillus flavus growth and subsequent aflatoxin B1 production in sorghum grains

Reddy, K.R.N. and Raghavender, C.R. and Reddy, B.N. and Salleh, B. (2010) Biological control of Aspergillus flavus growth and subsequent aflatoxin B1 production in sorghum grains. African Journal of Biotechnology , 9 (27). pp. 4247-4250.

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Abstract

Sorghum grains suffer from severe infection and colonization by several toxigenic fungi and subsequent production of mycotoxins, posing a threat to human and animal health. Among all the mycotoxins, aflatoxins represent one of the most important toxicants considered as important constraint of grain quality and sorghum production. Various physical and chemical methods of reducing mycotoxins have been recommended, but only few have been accepted for practical use. Biodegradation of aflatoxins, deploying microbes is an attractive strategy for mycotoxin management. This study, therefore explored the potential use of certain biocontrol agents for the reduction of growth of toxigenic Aspergillus flavus and subsequent aflatoxin B1 (AFB1) production in sorghum. Among all the biocontrol agents tested, culture filtrate of Rhodococcus erythropolis completely inhibited the A. flavus growth and AFB1 production at 25 mlkg-1 concentration. The other biocontrol agents, Bacillus subtilis, Pseudomonas fluorescens and Trichoderma viride showed 72, 74 and 65% inhibition of A. flavus growth whereas 54, 62.6 and 39% reduction of AFB1 at 200 mlkg-1 of sorghum grains, respectively.

Item Type: Article
Author Affiliation: School of Biological Sciences, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia
Subjects: Plant Production > Production Practices
Plant Protection > Control Methods
Plant Protection > Pests
Crop Improvement > Biotechnology
Divisions: Sorghum
Depositing User: Mr T L Gautham
Date Deposited: 16 Nov 2010 17:03
Last Modified: 29 Dec 2010 20:37
Official URL: http://www.academicjournals.org/AJB/PDF/pdf2010/5J...
URI: http://eprints.icrisat.ac.in/id/eprint/564

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