Scientists reveal the epigenetic mechanism of rice energy homeostasis regulation

Scientists reveal the epigenetic mechanism of rice energy homeostasis regulation

Scientists reveal the epigenetic mechanism of rice energy homeostasis regulation Scientists reveal the epigenetic mechanism of rice energy homeostasis regulation

Related epigenetic mechanisms of rice energy homeostasis regulation
.

Photo courtesy of Central China Agricultural University

 Related epigenetic mechanisms of rice energy homeostasis regulation

Recently, Hubei Hongshan Laboratory, National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Professor Zhou embroidered research group in the "plant cell" ( at The Plant the Cell ) magazine published online research paper reveals histone demethylase JMJ705 participation The related epigenetic mechanism of rice energy homeostasis regulation

Eukaryotes contain a type of kinase complex SNF1 that is extremely conserved in evolution, which plays a core regulatory role in the regulation of energy homeostasis.
This type of kinase is called SnRK1 in plants
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SnRK1 generally conducts energy-related signal transmission and regulation through phosphorylation of other proteins

Early studies found that SnRK1 can directly bind to chromatin, but how SnRK1 acts on chromatin and then participates in the regulation of gene expression is still unclear
.

The study found that when rice is starved, the starvation signal promotes the accumulation of SnRK1 in the nucleus, interacts with histone H3K27me3 demethylase JMJ705, and phosphorylates JMJ705 to improve its ability to remove H3K27me3 modification.
Ability to reduce the H3K27me3 modification level on the starvation response gene locus, thereby promoting the expression of these genes and maintaining sufficient energy supply in the cell
.

In the case of sufficient energy, SnRK1 and JMJ705 synergistically inhibit the expression of starvation-inducing genes, reducing plant energy consumption to ensure normal growth and development

The SnRK1-JMJ705 pathway identified in this study establishes a direct connection between plant cell energy regulation, chromatin modification, and gene expression regulation.
It has deepened people’s understanding of the balance between crop growth and development and adversity response, and is useful for improving crop growth.
The research on yield and environmental adaptability has important enlightening significance
.

(Source: China Science News Li Chen)

Related paper information: https://doi.

https://doi.
org/10.
1093/plcell/koab224