Enhanced high temperature tolerance in transgenic rice seedlings with elevated levels of alternative oxidase, OsAOX1a

• Murakami Yuuki

  Laboratory of Environmental Biotechnology, Graduate school of Agricultural Science, Tohoku University

• Toriyama Kinya

  Laboratory of Environmental Biotechnology, Graduate school of Agricultural Science, Tohoku University

抄録

The cyanide-insensitive alternative oxidase (AOX) respiratory pathway can reduce the excessive production of reactive oxygen species. Here we showed that transgenic rice seedlings transformed with OsAOX1a for rice alternative oxidase under the control of ubiquitin promoter exhibited thermotolerance after acute exposure, 41–45°C for 10 min, or chronic exposure, 37°C for up to 8 days. In contrast, these high temperature stresses resulted in significant growth inhibition in wild-type and transgenic plants with antisense OsAOX1a. The enhanced tolerance was significant in shoot growth, suggesting that the increased levels of AOX protein would dissipate the excess reductants produced in the chloroplasts suffering from oxidative damage due to high temperature stress.

収録刊行物

• Ｐｌａｎｔ　Ｂｉｏｔｅｃｈｎｏｌｏｇｙ

  Ｐｌａｎｔ　Ｂｉｏｔｅｃｈｎｏｌｏｇｙ 25 (4), 361-364, 2008

  日本植物バイオテクノロジー学会

キーワード

• alternative oxidase
• high temperature stress
• rice
• transgenic plant

詳細情報

• CRID: 1390282679304165760
• NII論文ID: 10021914165
• NII書誌ID: AA11250821
• DOI: 10.5511/plantbiotechnology.25.361
• ISSN: 13476114
• ISSN: 13424580
• NDL書誌ID: 9558251
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I9558251
• 本文言語コード: en
• データソース種別:
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  • NDL
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  • CiNii Articles
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