Alternative Respiratory Pathway under Drought is Partially Mediated by Hydrogen Peroxide and Contributes to Antioxidant Protection in Wheat Leaves(Crop Physiology & Ecology)

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概要

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• Water stress significantly enhanced the capacity of alternative respiratory pathway and induced AOX1 transcript in wheat (Triticum aestivum L.) leaves. The water-stressed seedlings pretreated with 1mM salicylhydroxamic acid (SHAM) had higher level of production of reactive oxygen species (ROS) than the seedlings either subjected to drought or SHAM treatment alone did. This observation suggests that cyanide-resistant respiration could play a role in antioxidant protection under the condition of drought. Exogenous application of hydrogen peroxide effectively increased the capacity of alternative respiratory pathway and induced AOX1 transcription. Pretreatment with ROS scavengers, such as 4, 5-dihydroxy-1, 3-benzene disulfonic acid (Tiron) and dimethylthiourea (DMTU), arrested the increase of ROS and partly inhibited the induction of both cyanide-resistant respiration and AOX1 transcript under water stress. These results suggest that the enhancement of cyanide-resistant respiration under drought might be partially mediated by hydrogen peroxide.

• 日本作物学会の論文

著者

• Li Xin

  Food And Bioengineering College Henan University Of Science And Technology

• LI Hongyu

  MOE Key Laboratory of Arid and Grassland Ecology, School of Life sciences, Lanzhou University

• FENG Hanqing

  College of Life Science, Northwest Normal University

• Feng Hanqing

  MOE Key Laboratory of Arid and Grassland Ecology, School of Life sciences, Lanzhou University

• Duan Jiangong

  MOE Key Laboratory of Arid and Grassland Ecology, School of Life sciences, Lanzhou University

• Liang Houguo

  MOE Key Laboratory of Arid and Grassland Ecology, School of Life sciences, Lanzhou University

• Li Xin

  MOE Key Laboratory of Arid and Grassland Ecology, School of Life sciences, Lanzhou University

• Han Na

  MOE Key Laboratory of Arid and Grassland Ecology, School of Life sciences, Lanzhou University

• Li Hongyu

  Moe Key Laboratory Of Arid And Grassland Ecology School Of Life Sciences Lanzhou University

• Duan Jiangong

  Moe Key Laboratory Of Arid And Grassland Ecology School Of Life Sciences Lanzhou University

• Feng Hanqing

  College Of Life Science Northwest Normal University

• Han Na

  Moe Key Laboratory Of Arid And Grassland Ecology School Of Life Sciences Lanzhou University

関連論文

• Bacterial Impact on H_2O_2 Accumulation during the Interaction between Xanthomonas and Rice
• Alternative Respiratory Pathway under Drought is Partially Mediated by Hydrogen Peroxide and Contributes to Antioxidant Protection in Wheat Leaves(Crop Physiology & Ecology)

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