期刊
MOLECULES
卷 24, 期 1, 页码 -出版社
MDPI
DOI: 10.3390/molecules24010005
关键词
biotic stress; Botrytis cinerea; grape; resistant genotypes; reactive oxygen species; jasmonic acid; antioxidant enzymes
资金
- National Key Research and Development Program of China [2018YFD0201300]
- National Natural Science Foundation of China [31572110]
- Program for Innovative Research Team of Grape Germplasm Resources and Breeding [2013KCT-25]
Botrytis cinerea is a necrotrophic fungal phytopathogen with devastating effects on many Vitis genotypes. Here, a screening of 81 Vitis genotypes for leaf resistance to B. cinerea revealed two highly resistant (HR), twelve resistant (R), twenty-five susceptible (S) and forty-two highly susceptible (HS) genotypes. We focused on the HR genotype, Zi Qiu' (Vitis davidii), and the HS genotype Riesling' (V. vinifera), to elucidate mechanisms of host resistance and susceptibility against B. cinerea, using detached leaf assays. These involved a comparison of fungal growth, reactive oxygen species (ROS) responses, jasmonic acid (JA) levels, and changes in the anti-oxidative system between the two genotypes after inoculation with B. cinerea. Our results indicated that the high-level resistance of Zi Qiu' can be attributed to insignificant fungal development, low ROS production, timely elevation of anti-oxidative functions, and high JA levels. Moreover, severe fungal infection of Riesling' and sustained ROS production coincided with relatively unchanged anti-oxidative activity, as well as low JA levels. This study provides insights into B. cinerea infection in grape, which can be valuable for breeders by providing information for selecting suitable germplasm with enhanced disease resistance.
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