Overexpression of wheat alternative oxidase gene Waox1a alters respiration capacity and response to reactive oxygen species under low temperature in transgenic Arabidopsis

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概要

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• Under low temperature conditions, the cytochrome pathway of respiration is repressed and reactive oxygen species (ROS) are produced in plants. Mitochondrial alternative oxidase (AOX) is the terminal oxidase responsible for the cyanide-insensitive and salicylhydroxamic acid-sensitive respiration. To study functions of wheat AOX genes under low temperature, we produced transgenic Arabidopsis by introducing Waox1a expressed under control of the cauliflower mosaic virus (CaMV) 35S promoter in Arabidopsis thaliana. The enhancement of endogenous AOX1a expression via low temperature stress was delayed in the transgenic Arabidopsis. Recovery of the total respiration activity under low temperature occurred more rapidly in the transgenic plants than in the wild-type plants due to a constitutively increased alternative pathway capacity. Levels of ROS decreased in the transgenic plants under low temperature stress. These results support the hypothesis that AOX alleviates oxidative stress when the cytochrome pathway of respiration is inhibited under abiotic stress conditions.

• 日本遺伝学会の論文
• 2006-10-25

著者

• NAKAMURA Chiharu

  Laboratory of Plant Genetics, Faculty of Agriculture, Kobe University

• TAKUMI Shigeo

  Laboratory of Plant Genetics, Department of Biological and Environmental Science, Faculty of Agricul

• Nakamura C

  Lab. Of Plant Genetics Dep. Of Agroenvironmental Sci. Graduate School Of Agricultural Sci. Kobe Univ

• Sugie Atsushi

  Lab. Of Plant Genetics Fac. Of Agriculture And Graduate School Of Sci. And Technol. Kobe Univ.

• Sugie Atsushi

  Laboratory Of Plant Genetics Faculty Of Agriculture And Graduate School Of Science And Technology Ko

• Takumi Shigeo

  Laboratory Of Plant Genetics Department Of Biological And Environmental Science Faculty Of Agricultu

• Takumi S

  Laboratory Of Plant Genetics Department Of Biological And Environmental Science Faculty Of Agricultu

• Takumi Shigeo

  Dep. Of Biological Sciences Stanford Univ.

• NAYDENOV Nayden

  Laboratory of Plant Genetics, Faculty of Agriculture, and Graduate School of Science and Technology,

• MIZUNO Nobuyuki

  Laboratory of Plant Genetics, Faculty of Agriculture, and Graduate School of Science and Technology,

• Naydenov Nayden

  Laboratory Of Plant Genetics Faculty Of Agriculture And Graduate School Of Science And Technology Ko

• Mizuno Nobuyuki

  Laboratory Of Plant Genetics Faculty Of Agriculture And Graduate School Of Science And Technology Ko

• Nakamura Chiharu

  Laboratory Of Plant Genetics Department Of Biological And Environmental Science Faculty Of Agricultu

• Nakamura Chiharu

  Laboratory Of Plant Genetics Department Of Agroenvironmental Science Graduate School Of Agricultural

• Naydenov Nayden

  Laboratory Of Plant Genetics Department Of Agroenvironmental Science Graduate School Of Agricultural Science Kobe University

• NAKAMURA Chiharu

  Laboratory of Genetics, Faculty of Agriculture, Kobe University

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