Dormancy heterogeneity among Arabidopsis thaliana seeds is linked to individual seed size.

ABSTRACT: Production of morphologically and physiologically variable seeds is an important strategy that helps plants to survive in unpredictable natural conditions. However, the model plant Arabidopsis thaliana and most agronomically essential crops produce visually homogenous seeds. Using automated phenotype analysis, we observed that small seeds in Arabidopsis tend to have higher primary and secondary dormancy levels than large seeds. Transcriptomic analysis revealed distinct gene expression profiles between large and small seeds. Large seeds have higher expression of translation-related genes implicated in germination competence. By contrast, small seeds have elevated expression of many positive regulators of dormancy, including a key regulator of this process, the DOG1 gene. Differences in DOG1

SUBMITTER: Krzyszton M 

PROVIDER: S-EPMC10873894 | biostudies-literature | 2024 Feb

REPOSITORIES: biostudies-literature