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Updated: Jun 2, 2026
09:25
Genome-wide Analysis of Histone Modifications Distribution using the Chromatin Immunoprecipitation Sequencing Method in Magnaporthe oryzae
Published on: June 2, 2021
Histone Modification Complex JMJ704-HDA709 Negatively Regulates Salinity Tolerance in Rice
Jing Wang1, Zhengting Chen1, Pengxiang Bai1
1National Key Laboratory of Crop Genetic Improvement, Hubei Hongshan Laboratory, Huazhong Agricultural University, Wuhan, China.
Summary
Rice plants
Area of Science:
- Plant Biology
- Epigenetics
- Crop Science
Background:
- Soil salinity is a major threat to global crop productivity.
- Understanding plant salt stress response is key to improving crop resilience.
- Epigenetic modifications play a role in plant abiotic stress responses.
Purpose of the Study:
- To investigate the molecular mechanisms of salt tolerance in rice.
- To identify key proteins involved in the plant response to salt stress.
- To explore the role of epigenetic regulation in rice salt tolerance.
Main Methods:
- Genetic analysis of rice mutants (jmj704, hda709, jmj704hda709).
- Overexpression studies of JMJ704 and HDA709.
- Immunoblot analysis to detect histone modifications (H3K4me3, H3K9ac).
- Chromatin immunoprecipitation to study protein-DNA interactions.
Main Results:
- The hda709 mutant and jmj704hda709 double mutant showed enhanced salt tolerance.
- JMJ704 and HDA709 exhibit synergistic crosstalk in regulating H3K4me3 and H3K9ac.
- The JMJ704-HDA709 complex, with OsWRKY72, co-regulates salt-responsive genes and peroxidase activity.
- This complex facilitates transcriptional silencing, negatively impacting salt tolerance.
Conclusions:
- The JMJ704-HDA709 complex negatively regulates rice salt tolerance.
- Epigenetic regulation by JMJ704 and HDA709 is crucial for modulating ROS metabolism and salt-responsive genes.
- This study provides insights for developing salt-resilient crops through epigenetic modification.
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