Protein profiles and antifungal activities of kernel extracts from corn genotypes resistant and susceptible to Aspergillus flavus

被引：35

作者：

Guo, BZ ^{[1
]}

Brown, RL

Lax, AR

Cleveland, TE

Russin, JS

Widstrom, NW

机构：

[1] USDA ARS, Plant Resistance Germplasm Enhancement Res Unit, Tifton, GA 31793 USA

[2] USDA ARS, So Reg Res Ctr, New Orleans, LA 70179 USA

[3] Louisiana State Univ, Ctr Agr, Dept Plant Pathol & Crop Physiol, Baton Rouge, LA 70803 USA

来源：

JOURNAL OF FOOD PROTECTION | 1998年 / 61卷 / 01期

关键词：

D O I：

10.4315/0362-028X-61.1.98

中图分类号：

Q81 [生物工程学（生物技术）]; Q93 [微生物学];

学科分类号：

071005 ; 0836 ; 090102 ; 100705 ;

摘要：

Mechanisms of resistance to infection by the fungus Aspergillus flavus and accumulation of aflatoxin were studied in kernels of resistant (GT-MAS:gk, Mp420) and susceptible (Pioneer 3154, Deltapine G-4666) corn genotypes. Proteins from kernel extracts of corn genotypes were analyzed by several methods of polyacrylamide gel electrophoresis. Consistent differences in protein profiles were detected among genotypes. Several proteins were unique to or present in greater concentration in resistant genotypes, whereas others were present only in susceptible genotypes. Extracts of resistant kernels showed markedly greater antifungal activity against A. flavus than did susceptible kernel extracts. Results from the present study suggest a role for kernel proteins in resistance to A. flavus infection and aflatoxin contamination in corn genotypes GT-MAS:gk and Mp420.

引用

页码：98 / 102

页数：5

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