<i>SlICE1</i> encoding a MYC-type transcription factor controls cold tolerance in tomato, <i>Solanum lycopersicum</i>

  • Miura Kenji
    Faculty of Life and Environmental Sciences, University of Tsukuba
  • Shiba Hayato
    Faculty of Life and Environmental Sciences, University of Tsukuba
  • Ohta Masaru
    Faculty of Life and Environmental Sciences, University of Tsukuba
  • Kang Seung Won
    Faculty of Life and Environmental Sciences, University of Tsukuba
  • Sato Ayaka
    Faculty of Life and Environmental Sciences, University of Tsukuba
  • Yuasa Takashi
    Department of Plant Resources, Faculty of Agriculture, Kyushu University
  • Iwaya-Inoue Mari
    Department of Plant Resources, Faculty of Agriculture, Kyushu University
  • Kamada Hiroshi
    Faculty of Life and Environmental Sciences, University of Tsukuba
  • Ezura Hiroshi
    Faculty of Life and Environmental Sciences, University of Tsukuba

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  • SlICE1 encoding a MYC-type transcription factor controls cold tolerance in tomato, Solanum lycopersicum

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Abstract

Many abiotic and biotic stresses can reduce plant growth and development. Low temperature is one of the most harmful abiotic stresses, particularly for plants that are tropical or subtropical in origin. To elucidate the molecular mechanisms underlying the cold-stress response, components involved in the signal transduction of cold stress have been characterized. In this study, we characterized a basic helix–loop–helix (bHLH) transcription factor encoding gene, SlICE1, from tomato (Solanum lycopersicum), which shows similarity with Arabidopsis ICE1. The expression of SlICE1 was observed in younger leaves, flowers, and green and red fruits. To characterize the function of SlICE1, overexpressing tomato lines were produced. SlICE1-overexpressing tomatoes exhibited chilling tolerance, and SlICE1 enhanced the expression of cold-responsive genes, such as SlCBF1 and SlDRCi7, as well as accumulation of ascorbic acid. The SlICE1 protein was degraded after cold treatment. These results indicate that SlICE1 enhances cold tolerance in tomatoes.

Journal

  • Plant Biotechnology

    Plant Biotechnology 29 (3), 253-260, 2012

    Japanese Society for Plant Biotechnology

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