盐原料诱导糖甜菜通过丁代谢诱导低温耐受性
Lei Liu1, Pengfei Zhang2, Guozhong Feng3
1College of Resources and Environment / Key Laboratory of Straw Comprehensive Utilization and Black Soil Conservation, Jilin Agricultural University, Changchun, 130118, China; State Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, 130102, China.
Plant physiology and biochemistry : PPB
|June 15, 2023
概括
盐原料增强了甜菜的糖分.
科学领域:
- 植物生理学 植物生理学
- 生物化学 生化学
- 分子生物学分子生物学
背景情况:
- 低温压力对植物生长和作物产量产生重大影响.
- 盐原料是一种用于改善植物应力耐受性的预处理策略.
- 桑提因代谢在植物应激反应中发挥作用,但其在低温耐受性方面的特定机制尚未完全理解.
研究的目的:
- 调查盐原始化过程中丁代谢的生理和分子机制,以提高甜菜的低温耐受性.
- 阐明桑,阿兰和活性氧物种 (ROS) 在甜菜对寒冷压力的反应中的作用.
主要方法:
- 甜菜植物接受了盐原始化 (SP),丁脱酶抑制剂 (XOI),外源性艾伦因 (EA) 和XOI+EA组合治疗.
- 通过测量生理参数来评估低温耐受性,例如PS II (Fv/Fm) 的最大量子效率和活性氧物种 (ROS) 含量.
- 进行了基因表达分析 (BvallB,BvSNRK2),酶活性测定 (氨酶,抗氧化酶,碳水化合物酶) 和相关联网络分析.
主要成果:
- 盐原料改善了甜菜的生长和低温下的光合作用效率.
- 仅XOI或EA治疗就增加了ROS水平,而联合治疗和盐原始化调节了ROS代谢.
- 盐原料和外源性艾伦因增强了抗氧化酶活动,并在寒冷压力下维持碳水化合物代谢.
- 相关性分析显示,BvallB表达与各种代谢指标之间存在显著的关系,包括ROS和碳水化合物水平.
结论:
- 盐诱导的丁代谢对于通过调节ROS,光合作用和碳水化合物代谢来增强甜菜的低温耐受性至关重要.
- 桑提因和阿兰托因是甜菜抗压力机制的关键参与者.
- 了解这些途径为改善作物对寒冷压力的抵抗力提供了潜在的策略.
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