Holbrook, C.C. and Wilson, D.M. and Matheron, M.E. and Hunter, J.E. and Knauft, D.A. and Gorbet, D.W. (2000) Aspergillus colonization and aflatoxin contamination in peanut genotypes with reduced linoleic acid composition. Plant Disease , 84 (2). pp. 148-150.
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Abstract
A. flavus and A. parasiticus can contaminate several agricultural crops with the toxic fungal metabolite aflatoxin. Previous research suggested that resistance may be conferred by altering the fatty acid composition of these crops. Recently, groundnut breeding lines with reduced linoleic acid content were developed. The purpose of this study was to examine the effect of reduced linoleic acid composition on preharvest aflatoxin contamination of groundnut. Seven breeding lines with relatively low linoleic acid and 2 control genotypes were grown in a randomized complete block design with 10 replicates for 4 years in Georgia and for 3 years in Arizona, USA. The plots were inoculated with a mixture of A. flavus and A. parasiticus approx. 60 days after planting and subjected to drought and heat stress for the 40 days immediately preceding harvest. Differences were observed in only 1 environment. Low linoleic acid composition had no measurable effect on preharvest aflatoxin contamination in groundnut when data were combined across years and locations. Products of the lipoxygenase pathway that have been shown to affect aflatoxin biosynthesis in vitro may not be present in sufficient quantities in groundnut
| Item Type: | Article |
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| Additional Information: | SNNigam collections |
| Author Affiliation: | USDA-ARS, Tifton, GA 31793, USA. |
| Subjects: | Plant Protection Crop Improvement Plant Physiology and Biochemistry > Biochemistry |
| Divisions: | Groundnut |
| Depositing User: | Mr T L Gautham |
| Date Deposited: | 08 Aug 2013 10:48 |
| Last Modified: | 08 Aug 2013 10:48 |
| Official URL: | http://dx.doi.org/10.1094/PDIS.2000.84.2.148 |
| URI: | http://eprints.icrisat.ac.in/id/eprint/11376 |
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