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

Zaofa Zhong; Zichao Zheng; Minghui Zhai; Gan Wang; Lijing Zhong; Huakun Zheng; X C Li; Haitao Cui

doi:10.1016/j.xplc.2026.101878

April 29, 2026

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

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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.

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Implication

Demonstrates enhanced rice immunity through dual inhibition of pathogen and rice catalases, suggesting a target for resistance breeding.

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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Zhong et al. (2026) studied this question.

synapsesocial.com/papers/69f6e5ac8071d4f1bdfc6467 https://doi.org/10.1016/j.xplc.2026.101878

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

Key Points

Ask about this paper

Implication

Abstract

Discussion

Cite This Study

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

Key Points

Ask about this paper

Implication

Abstract

Discussion

Cite This Study

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