OsCK2 酸盐 OsSIZ1 调节的饥饿反应和防卫反应
Mengyang Xie1, Xiaoli Yang1, Wang Chen1
1Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Southwest Bio-resources R&D Key Laboratory of Sichuan Province, State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu, China.
Plant biotechnology journal
|August 28, 2025
概括
研究人员确定了OsCK2-OsSIZ1模块如何调节大米中的获取和防御. 一种经过修改的OsSIZ1变体增强了吸收和病原体抵抗力,没有生长缺陷.
科学领域:
- 植物生物学
- 分子遗传学
- 生物化学
背景情况:
- 对于的生长至关重要,
- OsSIZ1,一个SUMO E3酶,对获取和饥饿反应至关重要,但其在Pi供应条件下的调节不清楚.
研究的目的:
- 研究如何在不同的酸盐 (Pi) 条件下调节 OsSIZ1 的活性.
- 确定CK2激酶在调节OSSIZ1功能和植物反应中的作用.
- 开发一种改进的OSSIZ1变体,以增强获取和抗病能力.
主要方法:
- 对Osck2β3突变的分析及其对全球SUMOylation水平的影响.
- 研究OsCK2对OsSIZ1的相互作用和酸化.
- 对Ossiz1和Osck2β3突变体的转录组分析.
- 酸化位点突变的 OsSIZ1 变异的过度表达.
主要成果:
- OsCK2β3中的突变影响了Pi的饥饿反应,降低了全球SUMOylation.
- OsCK2 与 OsSIZ1 相互作用并酸化,从而影响其稳定性.
- "OsCK2-OsSIZ1"模块调节了二类植物素生物合成和与病变相关的基因,影响了Pi的饥饿和防御.
- 一种经过修改的OsSIZ1变体增强了获取和防御反应,没有生长缺陷.
结论:
- 根据Pi的可用性,通过OsCK2介导的化来调节OsSIZ1的活性.
- OsCK2-OsSIZ1通路在调节吸收和植物防御机制方面发挥着双重作用.
- 一种耐酸化的OsSIZ1变体为提高作物弹性和营养使用效率提供了有希望的策略.
相关概念视频
Other Stress Responses in Bacteria
64
Bacteria have global regulatory systems that control several types of stress mechanisms. These include Pho regulon and the heat shock response, which are essential systems for environmental adaptation, such as nutrient limitation and proteotoxic stress. The Pho regulon and the heat shock response exemplify bacterial resilience, enabling rapid adaptation to fluctuating environmental conditions.Pho RegulonBacteria require phosphorus for essential cellular processes, including nucleic acid...
64
Cell Signaling in Plants
5.7K
Plant cells communicate to coordinate their cycle of growth, flowering and fruiting, and activities in roots, shoots, and leaves in response to the changing environmental conditions. Plant signaling is distinct from animal signaling. Plants primarily utilize enzyme-linked receptors, whereas the largest class of cell-surface receptors in animals are G-protein coupled receptors (GPCRs). Unlike animals, receptor tyrosine kinases are rare in plants. Instead, plants have a diverse class of...
5.7K
Phosphorylation
51.1K
The addition or removal of phosphate groups from proteins is the most common chemical modification that regulates cellular processes. These modifications can affect the structure, activity, stability, and localization of proteins within cells as well as their interactions with other proteins.
During phosphorylation, protein kinases transfer the terminal phosphate group of ATP to specific amino acid side chains of substrate proteins. Serine, threonine, and tyrosine are the most commonly...
During phosphorylation, protein kinases transfer the terminal phosphate group of ATP to specific amino acid side chains of substrate proteins. Serine, threonine, and tyrosine are the most commonly...
51.1K
Riboswitches
8.5K
Riboswitches are non-coding mRNA domains that regulate the transcription and translation of downstream genes without the help of proteins. Riboswitches bind directly to a metabolite and can form unique stem-loop or hairpin structures in response to the amount of the metabolite present. They have two distinct regions – a metabolite-binding aptamer and an expression platform.
The aptamer has high specificity for a particular metabolite which allows riboswitches to specifically regulate...
The aptamer has high specificity for a particular metabolite which allows riboswitches to specifically regulate...
8.5K
Protein Kinases and Phosphatases
13.4K
Proteins undergo chemical modifications that trigger changes in the charge, structure, and conformation of the proteins. Phosphorylation, acetylation, glycosylation, nitrosylation, ubiquitination, lipidation, methylation, and proteolysis are various protein modifications that regulate protein activity. Such modifications are usually enzyme-driven.
Protein kinases
Many proteins in the cell are regulated by phosphorylation, the addition of a phosphate group. A family of enzymes called kinases...
Protein kinases
Many proteins in the cell are regulated by phosphorylation, the addition of a phosphate group. A family of enzymes called kinases...
13.4K
Global Regulatory Systems
71
Global regulatory systems in bacteria enable rapid and coordinated responses to environmental changes by integrating sensory inputs with gene expression, ensuring efficient adaptation to fluctuating conditions. Key global regulatory mechanisms include regulons, two-component systems, sigma factors, and secondary messengers.Regulons and Global RegulatorsA regulon is a collection of genes and operons controlled by a common global regulator. These regulators enable bacteria to prioritize resource...
71


