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Arabidopsis Thaliana Ahl Family Modulates Hypocotyl Growth Redundantly By Interacting With Each Other Via The Ppc/Duf296 Domain, Jianfei Zhao, David Favero, Hao Peng, Michael Neff
Arabidopsis Thaliana Ahl Family Modulates Hypocotyl Growth Redundantly By Interacting With Each Other Via The Ppc/Duf296 Domain, Jianfei Zhao, David Favero, Hao Peng, Michael Neff
Jianfei Zhao
The Arabidopsis thaliana genome encodes 29 AT-HOOK MOTIF CONTAINING NUCLEAR LOCALIZED (AHL) genes, which evolved into two phylogenic clades. The AHL proteins contain one or two AT-hook motif(s) and one plant and prokaryote conserved (PPC)/domain of unknown function #296 (DUF296) domain. Seedlings lacking both SOB3/AHL29 and ESC/AHL27 confer a subtle long-hypocotyl phenotype compared with the WT or either single-null mutant. In contrast, the missense allele sob3-6 confers a dramatic long-hypocotyl phenotype in the light. In this study, we examined the dominant-negative feature of sob3-6 and found that it encodes a protein with a disrupted AT-hook motif that abolishes binding to …