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Related Concept Videos

Responses to Salt Stress02:02

Responses to Salt Stress

Salt stress—which can be triggered by high salt concentrations in a plant’s environment—can significantly affect plant growth and crop production by influencing photosynthesis and the absorption of water and nutrients.
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Histone Modification

The histone proteins have a flexible N-terminal tail extending out from the nucleosome. These histone tails are often subjected to post-translational modifications such as acetylation, methylation, phosphorylation, and ubiquitination. Particular combinations of these modifications form “histone codes” that influence the chromatin folding and tissue-specific gene expression.
Acetylation
The enzyme histone acetyltransferase adds acetyl group to the histones. Another enzyme, histone deacetylase,...
Histone Modification02:32

Histone Modification

The histone proteins have a flexible N-terminal tail extending out from the nucleosome. These histone tails are often subjected to post-translational modifications such as acetylation, methylation, phosphorylation, and ubiquitination. Particular combinations of these modifications form “histone codes” that influence the chromatin folding and tissue-specific gene expression.
Acetylation
The enzyme histone acetyltransferase adds acetyl group to the histones. Another enzyme, histone deacetylase,...
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Gene Regulation During Sporulation

Sporulation is a complex developmental process that allows certain Gram-positive bacteria, such as Bacillus subtilis and Clostridium species, to survive extreme environmental conditions. This process is tightly regulated by a series of signaling cascades and transcriptional controls, ensuring the formation of a highly resistant endospore.Sporulation is triggered by unfavorable conditions, such as nutrient depletion, and is governed by a phosphorelay system. One of the sensor kinases, such as...
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Regulation of Sodium and Potassium

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Sodium Regulation
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Responses to Drought and Flooding

Water plays a significant role in the life cycle of plants. However, insufficient or excess of water can be detrimental and pose a serious threat to plants.

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Updated: Jun 2, 2026

Genome-wide Analysis of Histone Modifications Distribution using the Chromatin Immunoprecipitation Sequencing Method in Magnaporthe oryzae
09:25

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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.

Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
|June 1, 2026
PubMed
Summary
This summary is machine-generated.

Rice plants

Keywords:
HDA709JMJ704OsWRKY72histone modification complexsalt stress

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07:43

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Published on: March 14, 2025

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.