Analysis of xyloglucan metabolism mutants highlights the prominent role of xylose cleavage in seed dormancy.

ABSTRACT: Seed dormancy is an adaptive trait that delays germination until environmental conditions become favorable for seedling survival and growth. Germination has been shown to depend on the mechanical resistance strength of the covering layers (testa and endosperm) that counteracts the growth force of the embryo. Cell wall remodeling is essential in the regulation of germination processes. In Arabidopsis thaliana, the side chain trimming of xyloglucans (XyG), the major hemicellulose in cell walls, by the apoplastic XYLOSIDASE1 (XYL1), has been previously shown to regulate XyG side chain length and seed dormancy. To investigate to what extent side chain complexity impacts on cell wall mechanical properties and regulates seed germination, xyl1 mutations were combined here with mutations in the tw

SUBMITTER: Suzuki H 

PROVIDER: S-EPMC11956407 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature