Os05g0551700

The rice Os05g0551700 was reported as OsIPT7 in 2006 by researchers from Japan.

Annotated Information

Gene Symbol

• Os05g0551700 <=> OsIPT7,IPT7

Function

• Some phytohormones such as gibberellins (GAs) and cytokinins (CKs) are potential targets of the KNOTTED1-like homeobox (KNOX) protein.
• The rice (Oryza sativa) genes for adenosine phosphate isopentenyltransferase (IPT), can catalyze the rate-limiting step of CK biosynthesis.
• KNOX protein simultaneously decreases GA biosynthesis and increases de novo CK biosynthesis through the induction of OsIPT2 and OsIPT3 expression, and the resulting high-CK and low-GA condition is required for formation and maintenance of the meristem.

Phenotypic analysis

• Phenotypes of OsIPT overexpressers resembled those of KNOX-overproducing transgenic rice, although OsIPT overexpressers did not form roots or ectopic meristems, both of which are observed in KNOX overproducers.

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Labs working on this gene

• Field Production Science Center, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Nishi-Tokyo, Tokyo 188–0002, Japan (T.S.);
• Institute of Physical and Chemical Research Plant Science Center, Yokohama, Kanagawa 230–0045, Japan (H.S., M.K.);
• Graduate School of Bioagricultural Sciences (H.N., Y.I., Y.S.)
• Bioscience and Biotechnology Center (Y.Y., M.M.), Nagoya University, Nagoya, Aichi 464–8601, Japan