Abstract
Charcoal rot disease in soybean is caused by the fungus Macrophomina phaseolina, which is believed to infect plants from soil through the roots by a toxin-mediated mechanism. Soybean genotypes exist which are susceptible (S) or moderately resistant (MR) to charcoal rot, but the mechanism of resistance is not known. Significantly (p ≤ 0.05) higher levels of phenolics, seed coat lignin, isoflavones, sugars, and total boron were observed in MR genotype than in S genotype seeds under irrigated and nonirrigated and under experimental M. phaseolina infested and noninfested conditions, indicating a possible association of these substances with resistance to toxin-mediated infection.
Original language | English (US) |
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Pages (from-to) | 16-26 |
Number of pages | 11 |
Journal | Toxin Reviews |
Volume | 31 |
Issue number | 1-2 |
DOIs | |
State | Published - Feb 2012 |
Bibliographical note
Copyright:Copyright 2013 Elsevier B.V., All rights reserved.
Keywords
- Charcoal rot disease
- Isoflavones
- Lignins
- Macrophomina phaseolina
- Phenolics