Arabidopsis thaliana DOF6 negatively affects germination in non-after-ripened seeds and interacts with TCP14.

ABSTRACT: Seed dormancy prevents seeds from germinating under environmental conditions unfavourable for plant growth and development and constitutes an evolutionary advantage. Dry storage, also known as after-ripening, gradually decreases seed dormancy by mechanisms not well understood. An Arabidopsis thaliana DOF transcription factor gene (DOF6) affecting seed germination has been characterized. The transcript levels of this gene accumulate in dry seeds and decay gradually during after-ripening and also upon seed imbibition. While constitutive over-expression of DOF6 produced aberrant growth and sterility in the plant, its over-expression induced upon seed imbibition triggered delayed germination, abscisic acid (ABA)-hypersensitive phenotypes and increased expression of the ABA biosynthetic gene AB

SUBMITTER: Rueda-Romero P 

PROVIDER: S-EPMC3295388 | biostudies-literature | 2012 Mar

REPOSITORIES: biostudies-literature