Expression of novel rice gibberellin 2-oxidase gene is under homeostatic regulation by biologically active gibberellins期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

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Expression of novel rice gibberellin 2-oxidase gene is under homeostatic regulation by biologically active gibberellins

Authors:	Miho?Sakai Tomoaki?Sakamoto Tamio?Saito Makoto?Matsuoka Hiroshi?Tanaka Email author" target="_blank">Masatomo?Kobayashi Email author

Institution:	(1) , National Institute of Agrobiological Sciences, Tsukuba, Japan,;(2) Field Production Science Center, The University of Tokyo, Nishi-Tokyo, Japan,;(3) , RIKEN Tsukuba Institute, 3–1–1 Koyadai, Tsukuba, Ibaraki 305–0074, Japan,;(4) BioScience Center, Nagoya University, Nagoya, Japan,;(5) School of Engineering, Nippon Bunri University, Oita, Japan,

Abstract:	We have cloned two genes for gibberellin (GA) 2-oxidase from rice (Oryza sativa L.). Expression of OsGA2ox2 was not observed. The other gene, OsGA2ox3, was expressed in every tissue examined and was enhanced by the application of biologically active GA. Recombinant OsGA2ox3 protein catalyzed the metabolism of GA₁ to GA₈ and GA₂₀ to GA₂₉-catabolite. These results indicate that OsGA2ox3 is involved in the homeostatic regulation of the endogenous level of biologically active GA in rice. Electronic Publication

Keywords:	Elongation GA 2-oxidase Oryza sativa
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