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Published on: August 4, 2018
OsELP3/ELP4, rice Elongator factor complex subunits, epigenetically regulates rice blast resistance
Yanfei Wu1,2, Zhensheng Qiao1, Yuquan Fu1
1State Key Laboratory of Biocatalysis and Enzyme Engineering, School of Life Sciences, Hubei University, Wuhan 430000, China.
Plant Physiology
|July 23, 2026
Summary
The Elongator complex, specifically OsELP3 and OsELP4, is crucial for rice blast resistance. These proteins enhance plant defenses by regulating histone acetylation in key defense pathways.
Area of Science:
- Plant Pathology
- Molecular Biology
- Genetics
Background:
- Rice blast, caused by Magnaporthe oryzae, is a major threat to global rice production.
- The Elongator complex regulates plant growth, development, and immunity in model organisms, but its role in rice immunity is unknown.
Purpose of the Study:
- To investigate the role of the Elongator complex in rice immunity against Magnaporthe oryzae.
- To elucidate the molecular mechanisms underlying Elongator-mediated rice blast resistance.
Main Methods:
- Genetic analysis of OsELP3 mutants and overexpression lines.
- Yeast-two-hybrid assays to determine protein interactions.
- RNA sequencing (RNA-seq) and histone acetylation analysis.
- Quantitative real-time PCR (qRT-PCR) to analyze gene expression.
Main Results:
- OsELP3 is essential for rice blast resistance; OsELP3 mutants are susceptible, while overexpression enhances resistance.
- OsELP3 interacts with OsELP4, which also positively regulates blast resistance.
- OsELP3/ELP4 enhances the transcription of defense genes in jasmonic acid signaling and lignin biosynthesis pathways by modulating histone acetylation.
Conclusions:
- OsELP3 and OsELP4 play a critical role in rice blast resistance through histone acetylation-mediated regulation of defense pathways.
- These findings provide insights into the molecular basis of plant immunity and offer potential genetic resources for developing resistant rice varieties.
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