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Regulatory functions of ROS dynamics via glutathione metabolism and glutathione peroxidase activity in developing rice zygote by Kasidit Rattanawong; Narumi Koiso; Erika Toda; Atsuko Kinoshita; Mari Tanaka; Hiroyuki Tsuji; Takashi Okamoto is a Agricultural and Biological Sciences article available to read on EtoBox.
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## SUMMARY Reactive oxygen species (ROS) play essential roles in plant development and environmental stress responses. In this study, ROS dynamics, the glutathione redox status, the expression and subcellular localization of glutathione peroxidases (GPXs), and the effects of inhibitors of ROS‐mediated metabolism were investigated along with fertilization and early zygotic embryogenesis in rice (__Oryza sativa__). Zygotes and early embryos exhibited developmental arrest upon inhibition of ROS production. Egg cells accumulated high ROS levels, and, after fertilization, intracellular ROS levels progressively declined in zygotes in which __de novo__ expression of __GPX1__ and __3__ was observed through upregulation of the genes. In addition to inhibition of GPX activity, depletion of glutathione impeded early embryonic development and led to failure of the zygote to appropriately decrease H~2~O~2~ levels. Moreover, through monitoring of the glutathione redox status, the developing zygotes exhibited a progressive glutathione oxidation, which became extremely delayed under inhibited GPX activity. Our results provide insights into the importance of ROS dynamics, GPX antioxidant activity,
Who reads Regulatory functions of ROS dynamics via glutathione metabolism and glutathione peroxidase activity in developing rice zygote?
It is typically read by researchers, students, and practitioners in Agricultural and Biological Sciences.
- Author
- Kasidit Rattanawong; Narumi Koiso; Erika Toda; Atsuko Kinoshita; Mari Tanaka; Hiroyuki Tsuji; Takashi Okamoto
- Publisher
- Wiley
- Published
- 2021
- Language
- EN
- Field
- Agricultural and Biological Sciences (Life Sciences)