Leaf epicuticular wax and hormone-mediated resistance to Alternaria brassicicola in broccoli.

ABSTRACT: Alternaria leaf spot disease is a foliar disease of brassica crops, including broccoli, caused by Alternaria brassicicola. This disease is a serious problem causing unmarketable yields and millions of dollars in losses in broccoli and other crucifers across the globe. During the pathogenicity and whole plant inoculation assays, we observed significantly higher disease severity in the older leaves at the bottom, as compared to the younger leaves at the top. The symptoms seemed to appear first in the lower and older leaves and gradually progressed upwards to the younger leaves, ultimately reaching the broccoli head. Epicuticular wax analysis showed a significantly higher amount of wax deposition on the younger leaves at the top as compared to the older leaves at the bottom. Further regressio

SUBMITTER: Gangurde SS 

PROVIDER: S-EPMC11969423 | biostudies-literature | 2025 Mar-Apr

REPOSITORIES: biostudies-literature