Chemical disruption of ABA signaling overcomes high-temperature inhibition of seed germination and enhances seed priming responses.

ABSTRACT: Seed germination is critical to agricultural productivity because low germination rates and/or asynchronous germination negatively affect stand establishment and subsequent yields. Exposure to high temperatures during seed imbibition can decrease both germination synchrony and rates through an ABA-mediated process called thermoinhibition. Methods to reduce thermoinhibition would be agriculturally valuable, particularly with increasing global mean temperatures. Lettuce seed germination is particularly sensitive to high temperatures and is a classic system for studying thermoinhibition. Extensive evidence using mutants and carotenoid biosynthetic inhibitors (e.g. fluridone) has demonstrated that endogenous abscisic acid (ABA) biosynthesis is required for thermoinhibition in lettuce and Arabi

SUBMITTER: Eckhardt J 

PROVIDER: S-EPMC11634006 | biostudies-literature | 2024

REPOSITORIES: biostudies-literature