Cold stress triggers premature fruit abscission through ABA-dependent signal transduction in early developing apple.

ABSTRACT: Fruit abscission is a complex physiological process that is regulated by internal and environmental factors. During early development, apple fruit are exposed to extreme temperature fluctuations that are associated with premature fruit drop; however, their effect on fruit abscission is largely unknown. We hypothesized that fruit abscission is triggered by cold stress and investigated the molecular basis of premature fruit drop using RNA-Seq and metabolomics data from apple fruit undergoing abscission following cold stress in the field. Genes responsive to abscisic acid signaling and cell wall degradation were upregulated during abscission, consistent with the increased abscisic acid concentrations detected by liquid chromatography-mass spectrometry. We performed ex vivo cold shock experime

SUBMITTER: Lee Y 

PROVIDER: S-EPMC8034736 | biostudies-literature | 2021

REPOSITORIES: biostudies-literature