过度表达CsSABP2提高了对黄龙和类瘤的耐受性. 辛尼斯斯 (sinensis) 是一种
Liting Dong1, Shuang Chen1, Lanyue Shang1
1Citrus Research Institute, Southwest University/National Citrus Engineering Research Center, Chongqing, China.
Frontiers in plant science
|October 23, 2024
概括
这项研究研究了类酸 (SA) 结合蛋白2 (SABP2) 基因对抗黄龙 (HLB) 和类瘤的抵抗. 过度表达CsSABP2-1通过平衡SA和MeSA水平来增强对两种疾病的耐受性,这对于系统性获得性耐药性 (SAR) 至关重要.
科学领域:
- 植物病理学 植物病理学
- 分子生物学分子生物学
- 生物化学 生物化学
背景情况:
- 黄龙 (HLB) 和癌在果产业造成了重大经济损失.
- 系统性获得耐药性 (SAR) 对于果对病原体的防御至关重要.
- 酸 (SA) 结合蛋白2 (SABP2) 通过将甲基酸盐 (MeSA) 转化为SA,对SAR建立至关重要.
研究的目的:
- 描述四种类SABP2基因 (CsSABP2) 对HLB和类癌症的功能.
- 评估CsSABP2过度表达对SA和MeSA水平以及转基因果的抗病能力的影响.
- 在CsSABP2中识别关键的功能领域,以增强疾病抵抗力.
主要方法:
- 在体外酶分析以确定CsSABP2蛋白质的MeSA酶活性.
- 在35S促进体下产生转基因万锦兰 (Citrus sinensis) 过度表达CsSABP2基因.
- 转基因植物中SA和MeSA含量的定量.
- 对HLB和类病原体的耐药性评估.
主要成果:
- 所有四种CsSABP2蛋白都表现出MeSA雌激酶活性,其中CsSABP2-1表现出最强的活性.
- 果中CsSABP2基因的过度表达增加了SA和MeSA水平,CsSABP2-1具有最显著的影响.
- 过度表达CsSABP2-1的转基因植物显著提高了对HLB和类瘤的耐受性,而其他CsSABP2则提高了对瘤的耐受性.
结论:
- 在CsSABP2中的氨基酸Val-18对于其酶功能和抗病能力至关重要.
- 通过CsSABP2平衡SA和MeSA水平对于调节SAR和赋予广谱电阻至关重要.
- 这项研究提供了通过SAR调制来设计果对HLB和果癌的耐药性的见解.
更多相关视频
09:23Specific and Accurate Detection of the Citrus Greening Pathogen Candidatus liberibacter spp. Using Conventional PCR on Citrus Leaf Tissue Samples
Published on: June 29, 2018
7.6K
11:30Automating Citrus Budwood Processing for Downstream Pathogen Detection Through Instrument Engineering
Published on: April 21, 2023
708
相关概念视频
Adaptations that Reduce Water Loss
25.1K
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.
25.1K
Responses to Salt Stress
13.0K
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.
13.0K
Responses 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
