24-epibrassinolide通过调节碳和代谢来增强葡萄藤 (Vitis vinifera L.) 的干旱耐受性
Guihua Zeng1, Zhuowu Wan1, Rui Xie1
1College of Enology, Northwest A&F University, Yangling, 712100, Shaanxi, China.
Plant cell reports
|August 18, 2024
概括
外源应用的24-epibrassinolide通过减少氧化损伤和改善碳和代谢来增强葡萄树干旱耐受性. 这种brassinosteroid治疗可以在缺水条件下提高植物的弹性和光合作用能力.
科学领域:
- 植物生理学 植物生理学
- 分子生物学分子生物学
- 农业科学 农业科学
背景情况:
- 铜类固醇 (BRs) 是关键的植物类固醇激素,调节植物生长和应激反应.
- 干旱压力显著影响葡萄藤生理学,影响碳和代谢.
- 了解葡萄树对干旱耐受性的作用对于农业可持续性至关重要.
研究的目的:
- 研究24-epibrassinolide (EBR) 对干旱压力下的葡萄藤中碳和代谢的影响.
- 确定EBR如何影响干旱压力葡萄树的氧化损伤和光合作用能力.
- 阐明EBR增强Vitis vinifera L.干旱耐受性的机制.
主要方法:
- 在暴露于干旱压力之前,葡萄藤被外源24-epibrassinolide (EBR) 预处理.
- 评估的氧化损伤标志物:超氧化激素,过氧化和脂质过氧化.
- 测量了光合作用参数,关键酶活动 (糖酸盐合成酶,糖合成酶,逆转酶,酸盐减少酶,谷氨酸合成酶) 和林积累.
主要成果:
- 干旱压力增加了氧化损伤;EBR预处理通过增加抗氧化剂度来减少了氧化损伤.
- EBR改善了光合作用能力,增加了糖和粉度,并改变了关键碳水化合物代谢酶的活性.
- EBR预处理显著增强了酸盐还原酶和谷氨酸合成酶的活动,促进了同化和积累.
结论:
- 外源的24-epibrassinolide (EBR) 可以减轻干旱压力下的葡萄树的氧化损伤.
- EBR提高光合作用能力,调节碳和代谢,增强干旱耐受性.
- EBR预处理是一种有前途的策略,可以提高葡萄酒对干旱压力的抵抗力.
更多相关视频
10:40Comprehensive Workflow for the Genome-wide Identification and Expression Meta-analysis of the ATL E3 Ubiquitin Ligase Gene Family in Grapevine
Published on: December 22, 2017
10.4K
06:35Semi-High Throughput Screening for Potential Drought-tolerance in Lettuce Lactuca sativa Germplasm Collections
Published on: April 17, 2015
9.0K
相关概念视频
01:57Adaptations that Reduce Water Loss
25.3K
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.
25.3K
02:41Responses to Drought and Flooding
10.6K
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.
10.6K
01:40Overview of Metabolism
29.7K
Living cells constantly carry out various chemical reactions which are necessary for their proper functioning. These reactions are interlinked to one another via multiple pathways. The collection of these chemical reactions is known as metabolism.
Plant Metabolism
Sunlight, the primary source of energy in plants, is first absorbed by the chlorophyll pigments present in their leaves. Plants then use this energy to carry out photosynthesis, where water is oxidized into oxygen and carbon dioxide...
Plant Metabolism
Sunlight, the primary source of energy in plants, is first absorbed by the chlorophyll pigments present in their leaves. Plants then use this energy to carry out photosynthesis, where water is oxidized into oxygen and carbon dioxide...
29.7K
02:04Regulation of Transpiration by Stomata
28.0K
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.
28.0K
02:02Responses 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
02:45Responses to Heat and Cold Stress
13.4K
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.
13.4K