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Host defense responses during powdery mildew (Golovinomyces latisporus comb. nov.) infection in sunflower (Helianthus annuus L.)

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Title Host defense responses during powdery mildew (Golovinomyces latisporus comb. nov.) infection in sunflower (Helianthus annuus L.)
Not Available
 
Creator Prathap Reddy Kallamadi
Praduman Yadav,
Kamakshi Dandu
Prashant Kumar Soni,
Chander Rao Sankaraneni,,
Kirti Pulugurtha Bharadwaja
 
Subject Golovinomyces
Helianthus annuus
antioxidant enzymes
crosslinking,
disease progression
cell walls
plant pathogens
 
Description Not Available
The infection by a plant pathogen results in the production of the reactive oxygen intermediates (ROIs) in the plant. ROIs threshold levels determine the fate of the resistance in the host; higher than the threshold levels result in the appearance of the resistant or susceptible reaction on the infected plants. ROIs below the threshold levels have been shown to be important in eliciting disease resistance-related signaling pathways that result in the production of antimicrobial compounds, pathogenesis-related proteins, cell wall cross-linking. Golovinomyces latisporus is a very important biotrophic pathogen on sunflower causing powdery mildew disease, which causes serious yield losses. A set of genotypes confirmed earlier to be susceptible (PS 2023 and Morden) and resistant (TX 16R and ID-25) were analyzed for disease progression after the pathogen infection and the development of oxidative burst. In comparison, susceptible genotypes exhibited higher levels of ROIs than resistant genotypes, thus indicating the importance of these molecules in the infection process. The higher levels of ROIs in susceptible genotypes lead to cell damage. Concomitantly, the anti-oxidant enzyme activities are significantly higher in the resistant genotypes than in the susceptible genotypes. The resistant genotypes displayed higher levels of transcripts of hsr203J, which has proven roles in cell death, and NPR1, the master regulator of the salicylic acid-based resistance signaling that acts in plants resistance against biotrophic pathogens.
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Date 2023-02-14T03:39:52Z
2023-02-14T03:39:52Z
2022-03-01
 
Type Book
 
Identifier Not Available
1983-2052
http://krishi.icar.gov.in/jspui/handle/123456789/76118
 
Language English
 
Relation Not Available;
 
Publisher Not Available