Heat-Induced Secondary Dormancy Contributes to Local Adaptation in Arabidopsis thaliana.

ABSTRACT: Seeds should not germinate in conditions unsuitable for seedling growth. Dormancy, which allows seeds to remain inactive in an environment that would otherwise enable germination, helps optimise the timing of germination. Primary dormancy, developed during seed maturation on the parent plant, prevents immediate germination post-dispersal, regardless of external conditions. Secondary dormancy, however, is triggered post-dispersal when seeds face unfavourable conditions, enabling them to re-enter dormancy even if initially non-dormant. This mechanism allows seeds to fine-tune germination according to environmental conditions. In this study, we examined the role of heat-induced secondary dormancy in local adaptation by analysing natural variations within 361 Arabidopsis thaliana accessions fr

SUBMITTER: Tran NLT 

PROVIDER: S-EPMC12456118 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature