在渐进的热应力下,不同甘品种的糖糖代谢酶的表达
Faisal Mehdi1,2,3, Xinlong Liu1,4, Zunaira Riaz2
1Sugarcane Research Institute, Yunnan Key Laboratory of Sugarcane Genetic Improvement, Yunnan Academy of Agricultural Sciences, Kaiyuan, China.
Frontiers in plant science
|November 1, 2023
概括
甘是一种糖.
科学领域:
- 植物生理学 植物生理学
- 生物化学 生物化学
- 分子生物学分子生物学
背景情况:
- 热应激显著影响了甘生理和糖生产.
- 了解酶对热量的反应对于作物适应策略至关重要.
研究的目的:
- 为了研究热冲击对两种甘品种中糖代谢酶的影响.
- 确定甘中热应力耐受性的分子机制.
主要方法:
- 两种甘品种 (S2003-US-633和SPF-238) 接受了受控的热应激 (45°C) 和恢复期.
- 在不同生长阶段分析了酶活性 (逆转酶,SPS),糖含量和压力标志物 (proline,MDA,H2O2,EC).
主要成果:
- 热冲击降低了糖糖含量和糖回收,但增加了,MDA,H2O2和EC.
- 逆转酶异酶的表达减少,而糖酸盐合成酶 (SPS) 的表达在成熟时增加.
- 在热应力下观察到独特的逆转酶异酶蛋白 (67,134,160 kDa).
- 培养器S2003-US-633对热应激的耐受性更强.
结论:
- 成熟时的糖分积累与较高的SPS活性和较低的逆转酶活性有关.
- 热应激会对甘的糖代谢和质量产生负面影响.
- 培养S2003-US-633显示出旨在提高甘热应激耐受性的育种计划的希望.
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