AI Article Synopsis
- Powdery mildew, caused by fungal pathogens, negatively affects grape leaves and fruits, prompting research into grape resistance mechanisms.
- The study focused on the VvTIFY9 protein, which is linked to plant stress responses, revealing its higher expression in grape leaves and its induction by salicylic acid (SA) and infection.
- Results indicated that overexpressing VvTIFY9 enhanced resistance to powdery mildew and activated defense-related genes, suggesting its key role in SA-mediated resistance in grapes.
Article Abstract
Powdery mildew is a disease caused by fungal pathogens that harms grape leaves and fruits. The gene family is a plant-specific super-family involved in the process of plants' development and their biotic and abiotic stress responses. This study aimed to learn the function of the gene to investigate molecular mechanisms of grape resistance to powdery mildew. A VvTIFY9 protein encoding a conserved motif (TIF[F/Y]XG) was characterized in grape (). Sequence analysis confirmed that contained this conserved motif (TIF[F/Y]XG). Quantitative PCR analysis of in various grape tissues demonstrated that the expression of was higher in grape leaves. was induced by salicylic acid (SA) and methyl jasmonate (MeJA) and it also quickly responded to infection with in grape. Analysis of the subcellular localization and transcriptional activation activity of showed that VvTIFY9 located to the nucleus and had transcriptional activity. that overexpressed were more resistant to , and quantitative PCR revealed that two defense-related genes, and , were up-regulated in the overexpressing lines. These results indicate that is intimately involved in SA-mediated resistance to grape powdery mildew. This study provides the basis for exploring the molecular mechanism of grape resistance to disease resistance and candidate genes for transgenic disease resistance breeding of grape plants.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6747219 | PMC |
| http://dx.doi.org/10.3390/ijms20174286 | DOI Listing |
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