OsERF2 作为 OsEIL1 的直接下游目标,对大米的盐耐受性进行负面调节
Jiahao Zhou1,2,3, Shengliang Fang4, Xinjie Liu5,6
1College of Life Science, Hengyang Normal University, Hengyang, 421000, China. zhoujiahao729@126.com.
概括
米乙烯反应因子2 (OsERF2) 负面调节盐分耐受性. Knockdown 的 OsERF2 通过减少氧化应激来提高盐分耐受性,而 OsERF2 的过度表达则降低了它,表明 OsERF2 的盐分耐受性.
科学领域:
- 植物分子生物学 植物分子生物学
- 无生性压力生理学 生物压力生理学
- 农作物遗传学 农作物遗传学
背景情况:
- 盐度显著限制了植物生长和作物产量.
- 乙烯反应因子 (ERF) 是植物对非生物应激反应的关键调节者.
- 之前,OsERF2与大米根生长中的激素和糖信号有关.
研究的目的:
- 为了研究OsERF2在米盐耐受性中的作用.
- 确定OsEIL1和OsERF2.2之间的监管关系.
- 探索OsERF2在提高作物应激弹性方面的潜力.
主要方法:
- 产生和分析OsERF2功能增强 (nsf2857) 和淘汰 (Ami-ERF2) 米突变.
- 在盐应激下测量生理参数,包括和反应性氧物种 (ROS).
- 酵母单杂交和ChIP测试证实了OsEIL1与OsERF2促进体的直接结合.
主要成果:
- OsERF2功能增益突变 (nsf2857) 显示盐耐受性降低,而OsERF2淘汰 (Ami-ERF2) 系列显示了增强的盐耐受性.
- 与野生类型相比,ami-ERF2线在盐应激下积和ROS积累较低.
- 证实OsEIL1直接与OsERF2的促进体结合,这表明转录调节.
结论:
- OsERF2 作为大米盐耐受性的负调节剂.
- OsEIL1直接调节OsERF2的表达,调解盐应激反应.
- OsERF2是基因工程的潜在目标,旨在提高米盐耐受性和对非生物压力的弹性.
相关概念视频
Responses to Salt Stress
12.8K
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.
12.8K
Osmoregulation in Fishes
49.0K
When cells are placed in a hypotonic (low-salt) fluid, they can swell and burst. Meanwhile, cells in a hypertonic solution—with a higher salt concentration—can shrivel and die. How do fish cells avoid these gruesome fates in hypotonic freshwater or hypertonic seawater environments?
49.0K
Responses to Drought and Flooding
10.5K
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.
10.5K
Tonicity in Plants
26.1K
Plant cells maintain appropriate osmotic balance in extreme conditions. For instance, plants in dry environments store water in vacuoles, limit the opening of their stoma, and have thick, waxy cuticles to prevent unnecessary water loss. Some species of plants that live in salty environments store salt in their roots. As a result, water osmosis occurs in the root from the surrounding soil.
Tonicity
Tonicity describes the capacity of a cell to lose or gain water depending on the solute...
Tonicity
Tonicity describes the capacity of a cell to lose or gain water depending on the solute...
26.1K
Key Elements for Plant Nutrition
18.5K
Like all living organisms, plants require organic and inorganic nutrients to survive, reproduce, grow and maintain homeostasis. To identify nutrients that are essential for plant functioning, researchers have leveraged a technique called hydroponics. In hydroponic culture systems, plants are grown—without soil—in water-based solutions containing nutrients. At least 17 nutrients have been identified as essential elements required by plants. Plants acquire these elements from the...
18.5K
Cell Signaling in Plants
5.4K
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...
5.4K


