Abstract
The necrotrophic fungus Botrytis cinerea causes devastating pre- and post-harvest yield losses in grapevine (Vitis vinifera L.). Although B. cinerea has been well-studied in different plant species, there is limited information related to the resistance and susceptibility mechanisms of Vitis genotypes against B. cinerea infection. In the present study, leaves and berries of twenty four grape genotypes were evaluated against B. cinerea infection. According to the results, one genotype (Ju mei gui) was highly resistant (HR), one genotype (Kyoho) was resistant (R), eight genotypes were susceptible (S), and fourteen genotypes were highly susceptible (HS) against infection of B. cinerea in leaves. Whereas in the case of B. cinerea infection in grape berry, three genotypes were found to be highly resistant, three resistant, eleven genotypes susceptible, and seven were highly susceptible. To further explore the mechanism of disease resistance in grapevine, we evaluated “Ju mei gui” and “Summer black” in terms of B. cinerea progression, reactive oxygen species reactions, jasmonic acid contents, and the activities of antioxidant enzymes in leaf and fruit. We surmise that the resistance of “Ju mei gui” is due to seized fungal growth, minor reactive oxygen species (ROS) production, elevated antioxidant enzyme activity, and more jasmonic acid (JA) contents. This study provides insights into the resistance and susceptibility mechanism of Vitis genotypes against B. cinerea. This will help for the selection of appropriate germplasm to explore the molecular basis of disease resistance mechanisms in grapevine.
Highlights
Grape (Vitis vinifera L.) is an extensively cultivated crop that has vast economic importance as it is a source of numerous products [1], though the berry quality and yield of grapevine is restricted by many abiotic and biotic stresses [2]
Vitis genotypes were evaluated for berry resistance level against B. cinerea infection, three genotypes were highly resistant (HR), three resistant (R), eleven genotypes S, and seven were highly susceptible (HS) (Table 2)
This study provides an understanding into B. cinerea infection in grapevine, which can be a precious source for researchers by providing information for choosing appropriate grapevine genotypes
Summary
Grape (Vitis vinifera L.) is an extensively cultivated crop that has vast economic importance as it is a source of numerous products [1], though the berry quality and yield of grapevine is restricted by many abiotic and biotic stresses [2]. B. cinerea is a necrotrophic fungus that causes overwhelming grey mold disease. This pathogen is the second most widespread plant pathogen accountable for pre- and post-harvest dwindling and fruit quality worsening [3]. This necrotrophic fungus actively attempts to destroy the living host tissues and naturally senesced plant tissues to use them as nutrients [4]. The pathogen causes reduction both in quality and yield of wine [6].
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
