AHL26, an AT-hook gene, negatively regulates hypocotyl growth and flowering time in Arabidopsis thaliana.

ABSTRACT:

Background

The AT-HOOK MOTIF CONTAINING NUCLEAR LOCALIZED (AHL) gene family in Arabidopsis contains 29 members, which evolved into two phylogenetic clades. Genes from this family play a role in several biological processes, but most of the members' functions remain unknown.

Results

Here, we provide evidence that AHL26, a clade-a protein, negatively regulates hypocotyl growth and flowering time in Arabidopsis. Analysis of transgenic plants expressing an AHL26:AHL26:GUS translational fusion driven by 1.9 KB of the endogenous AHL26 promoter displayed GUS activity in the hypocotyl and apical meristem of light-grown seedlings. The overexpression of AHL26 resulted in the inhibition of hypocotyl growth and delayed flowering. However, the overexpression of a dominant-negative AHL26

SUBMITTER: Ahmed S 

PROVIDER: S-EPMC12123839 | biostudies-literature | 2025 May

REPOSITORIES: biostudies-literature