CsRAP2-7通过直接激活CsACO1来负面调节皮生物合成和果的抗干旱性
Xinyue Zhao1, Jingheng Xie1, Li Yang1
1Department of Pomology, College of Agronomy, Jiangxi Agricultural University, Nanchang, Jiangxi, 330045, China.
Plant physiology and biochemistry : PPB
|May 8, 2025
概括
这项研究确定了CsRAP2-7作为果中皮质生物合成的负调节剂. 过度表达这种基因会通过抑制积累和增加乙烯生产来降低干旱耐受性.
科学领域:
- 植物生物学 植物生物学
- 分子遗传学 分子遗传学
- 生物化学 生物化学
背景情况:
- 树皮对于植物的抗压能力至关重要.
- 众所周知,树皮状生物合成的积极调节剂,但负面调节剂的研究不足.
- 了解负面调节剂是提高类植物应激弹性的关键.
研究的目的:
- 为了识别和描述腹生合成的阴性调节者.
- 阐明AP2/ERF家族基因CsRAP2-7在调节植物应激耐受性的作用.
- 研究CsRAP2-7影响皮质积累和抗干旱的分子机制.
主要方法:
- 从腹色中克隆了CsRAP2-7基因.
- 在干旱和ABA治疗下进行亚细胞局部化和基因表达分析.
- 在中过度表达CsRAP2-7以评估其对树皮,乙烯生物合成和耐旱性的影响.
- 使用分子技术对CsRAP2-7与CsACO1促进体结合的分析.
主要成果:
- 克隆了AP2 / ERF家族基因CsRAP2-7,并发现其位于核中.
- CsRAP2-7的表达是由干旱和ABA治疗引起的.
- 在中过度表达CsRAP2-7导致乙烯生物合成增加,皮质减少,皮质透率降低,干旱耐受性降低.
- CsRAP2-7直接与CsACO1的促进子结合,激活其转录.
结论:
- CsRAP2-7 作为果中皮质生物合成的负调节剂.
- CsRAP2-7通过调节乙烯生物合成和皮质积累,对干旱耐受性产生负面影响.
- 这些发现突出了CsRAP2-7作为基因工程的潜在目标,以提高果的抗旱能力.
相关概念视频
Adaptations that Reduce Water Loss
25.0K
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.
25.0K
C4 Pathway and CAM
45.0K
Most plants use the C3 pathway for carbon fixation. However, some plants, such as sugar cane, corn, and cacti that grow in hot conditions, use alternative pathways to fix carbon and conserve energy loss due to photorespiration. Photorespiration is the process that occurs when the oxygen concentration is high. Under such conditions, the rubisco enzyme in the Calvin cycle binds O2 instead of CO2, which halts photosynthesis and consumes energy.
C4 Pathway
The C4 pathway is used by plants such as...
C4 Pathway
The C4 pathway is used by plants such as...
45.0K
Introduction to Plant Diversity
43.5K
From Water to Land
43.5K
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
Role of Microtubules in Cell Wall Deposition
2.3K
Microtubules are small hollow tubes in eukaryotic cells. The cell wall microtubules are polymerized dimers of two globular proteins, α-tubulin and β-tubulin, two globular proteins. With a diameter of about 25 nm, microtubules are the widest components of the cytoskeleton. They help the cell resist compression and provide a track along which vesicles move through the cell or pull replicated chromosomes to opposite ends of a dividing cell. Microtubules go through quick cycles of...
2.3K
Regulation of Transpiration by Stomata
27.6K
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.
27.6K


