控制盐分耐受性和通过大麦中的铜类信号通路的产量
Yuliya Kloc1, Marta Dmochowska-Boguta1, Paulina Żebrowska-Różańska2
1Plant Breeding and Acclimatization Institute-National Research Institute, Radzikow, 05-870 Blonie, Poland.
International journal of molecular sciences
|January 23, 2024
概括
对大麦的向基因编辑.
科学领域:
- 植物生物学 植物生物学
- 分子遗传学 分子遗传学
背景情况:
- 铜类固醇 (BRs) 是关键的植物类固醇激素,调节生长,发育和应激反应.
- BR信号涉及转录因子BZR1和BES1,这些转录因子被像BRASSINOSTEROID INSENSITIVE2 (BIN2) 这样的糖原合成酶激酶3 (GSK3) 酶负调节.
研究的目的:
- 研究大麦糖原合成酶激酶3/SHAGGY样基因1.1 (HvGSK1.1) 在植物生长和应激反应中的功能.
- 评估 HvGSK1.1 淘汰突变对农学特征和 BR 信号的影响.
主要方法:
- 使用CRISPR/Cas9基因组编辑,在大麦中产生了HvGSK1.1的突变系.
- 下一代测序 (NGS) 证实了基因淘汰突变.
- 现型分析和叶子倾斜度测试是在突变线上进行的.
主要成果:
- CRISPR/Cas9编辑导致了各种突变,包括移和过早停止编码子,导致HVGSK1.1淘汰.
- HvGSK1.1淘汰突变体在盐压力下表现出增强的植物生长.
- 突变植物在正常条件下增加了千核重量,并增强了BR依赖信号.
结论:
- 针对性淘汰 HvGSK1.1 改善了大麦的关键农业特征,包括盐分耐受性和产量.
- 禁用GSK3的正确基因代表了开发具有提高农业性能作物的有前途的战略.
相关概念视频
Responses to Salt Stress
13.1K
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.
13.1K
Cell Signaling in Plants
5.6K
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...
5.6K
Adaptations that Reduce Water Loss
25.6K
Though evaporation from plant leaves drives transpiration, it also results in loss of water. Because water is critical for photosynthetic reactions and other cellular processes, evolutionary pressures on plants in different environments have driven the acquisition of adaptations that reduce water loss.
25.6K
Short-distance Transport of Resources
16.0K
Short-distance transport refers to transport that occurs over a distance of just 2-3 cells, crossing the plasma membrane in the process. Small uncharged molecules, such as oxygen, carbon dioxide, and water, can diffuse across the plasma membrane on their own. In contrast, ions and larger molecules require the assistance of transport proteins due to their charge or size. Transport across membranes also occurs within individual cells, playing a variety of essential roles for the plant as a whole.
16.0K
Regulation of Transpiration by Stomata
28.3K
During photosynthesis, plants acquire the necessary carbon dioxide and release the produced oxygen back into the atmosphere. Openings in the epidermis of plant leaves is the site of this exchange of gasses. A single opening is called a stoma—derived from the Greek word for “mouth.” Stomata open and close in response to a variety of environmental cues.
28.3K
Responses to Heat and Cold Stress
13.5K
Every organism has an optimum temperature range within which healthy growth and physiological functioning can occur. At the ends of this range, there will be a minimum and maximum temperature that interrupt biological processes.
13.5K


