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May 3, 20260 citations

Cysteine-rich secreted protein OsCRRSP1 enhances rice defense by dual inhibition of pathogen and rice catalases.

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ZZZaofa ZhongShandong Agricultural UniversityZZZichao ZhengFujian Agriculture and Forestry UniversityMZMinghui ZhaiShandong Agricultural University

Key Points

  • This research aims to explore how OsCRRSP1 enhances rice immunity by regulating catalase activity and reactive oxygen species.
  • Investigated the role of OsCRRSP1 in rice defense against pathogens.
  • Examined the interaction between OsCRRSP1 and catalase enzymes.
  • Analyzed reactive oxygen species levels in rice cells.
  • OsCRRSP1 significantly inhibits MoCatB and OsCatB activities, improving ROS balance.
  • Enhanced defense mechanisms against pathogens were observed in rice expressing OsCRRSP1.
  • Findings reveal a novel mechanism for fine-tuning rice immunity.

Abstract

levels, whereas MoCatB overexpression suppresses ROS and promotes disease. These findings uncover a previously unrecognized OsCRRSP1-MoCatB/OsCatB module that fine-tunes ROS homeostasis to strengthen rice immunity and offers a promising molecular target for resistance breeding.

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Cite This Study

Zhong et al. (2026) studied this question.

synapsesocial.com/papers/69f6e5ac8071d4f1bdfc6467https://doi.org/10.1016/j.xplc.2026.101878
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