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Accumulation of Phosphorylated Repressor for Gibberellin

Summary: Accumulation of Phosphorylated
Repressor for Gibberellin
Signaling in an F-box Mutant
Akie Sasaki,1
* Hironori Itoh,1
* Kenji Gomi,1
Miyako Ueguchi-Tanaka,1
Kanako Ishiyama,2
Masatomo Kobayashi,2
Dong-Hoon Jeong,3
Gynheung An,3
Hidemi Kitano,4
Motoyuki Ashikari,1
Makoto Matsuoka1

Gibberellin (GA) regulates growth and development in plants. We isolated and
characterized a rice GA-insensitive dwarf mutant, gid2. The GID2 gene encodes
a putative F-box protein, which interacted with the rice Skp1 homolog in a yeast
two-hybrid assay. In gid2, a repressor for GA signaling, SLR1, was highly ac-
cumulated in a phosphorylated form and GA increased its concentration, where-


Source: An, Gynheung - Department of Life Science, Pohang University of Science and Technology


Collections: Biotechnology; Biology and Medicine