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OsBph32 Contributes to Coordinated Cell Wall and Metabolic Responses in Rice Resistance to Brown Planthopper
Lulu Wang1,2, Ting Liang3, Aoyun Zhu1,2
1College of Life Sciences, Wuhan University, Wuhan 430072, China.
Plants (Basel, Switzerland)
|July 28, 2026
Summary
The brown planthopper (BPH) severely damages rice crops. The OsBph32 gene enhances rice resistance by activating defense responses and altering plant metabolism, offering new insights into pest control strategies.
Area of Science:
- Plant Science
- Molecular Biology
- Entomology
Background:
- The brown planthopper (BPH) is a significant rice pest in Asia.
- The resistance gene OsBph32 enhances BPH resistance, but its mechanisms are unknown.
Purpose of the Study:
- Investigate the molecular and physiological mechanisms of OsBph32-mediated BPH resistance in rice.
Main Methods:
- Overexpression of OsBph32 in susceptible rice cultivar 9311.
- Physiological, transcriptomic, and metabolomic analyses.
- Assessment of plant damage and insect growth.
Main Results:
- OsBph32 overexpression increased rice resistance to BPH.
- Enhanced defense responses including ROS accumulation and callose deposition.
- Transcriptomic and metabolomic changes in cell wall, phenylpropanoid, and carbon metabolism.
Conclusions:
- OsBph32 confers BPH resistance through coordinated changes in structural reinforcement, secondary metabolism, and carbon metabolism.
- Provides insights into non-NLR-mediated insect defense mechanisms in plants.
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