Abstract
Reactive oxygen species (ROS) produced by NADPH oxidase play critical roles in various plant growth, development and defense against pathogens. Plant NADPH oxidases are called regulatory burst oxidase homolog or Rboh. Although Rboh has been isolated from numerous plant species, the molecular mechanism of the regulation of its enzymatic activity remains unclear. All rboh genes identified to date possess a conserved N-terminal extension that contains two Ca2+-binding EF-hand motifs. This N-terminal region may provide an entry point for Ca2+ to participate in ROS signaling. In phagocyte NADPH oxidase, the small GTPase Rac2 plays the role of a key regulator. In plants, Rac GTPases are also involved in regulation of ROS production and resistance to pathogens in rice. This review discusses recent findings that provide key clues to the understanding of molecular regulation of Rboh by Rac GTPase.
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Wong, H.L., Kawasaki, T., Shimamoto, K. (2009). Rac GTPase and the Regulation of NADPH Oxidase in Rice Innate Immunity Response. In: Wang, GL., Valent, B. (eds) Advances in Genetics, Genomics and Control of Rice Blast Disease. Springer, Dordrecht. https://doi.org/10.1007/978-1-4020-9500-9_17
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DOI: https://doi.org/10.1007/978-1-4020-9500-9_17
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