动态的生理和转录变化揭示了玉米盐应激对记忆的影响
Zhiying Zhu1,2, Yan Dai1, Guangrun Yu1,2
1School of Life Sciences, Nantong University, Nantong, 226019, China.
BMC genomics
|December 1, 2023
概括
玉米植物发展盐应激记忆,在重复暴露时表现出增强的耐药性和改变的基因表达. 这项研究确定了关键的基因和转录因子,这些基因和转录因子参与了这一关键的作物改进适应过程.
科学领域:
- 植物生物学 植物生物学
- 遗传学 遗传学 是一个
- 农业学是一种农业学.
背景情况:
- 无生物压力可以诱导植物的压力记忆,这对于适应未来的压力至关重要.
- 了解植物,特别是玉米的盐应激记忆,尽管已经确定了盐反应基因,但仍然是有限的.
研究的目的:
- 通过生理和转录分析,对玉米的盐应激记忆进行表征.
- 为了确定参与玉米盐应激记忆的基因和转录因子.
主要方法:
- 对玉米植物进行反复的盐应激应用.
- 生理学测试 (氨酸含量,POD,SOD,MDA活性).
- 转录分析分析基因表达模式,并识别盐应激记忆基因 (SMGs).
主要成果:
- 玉米植物在第二次盐暴露期间表现出增强的耐盐性,显示出生理记忆.
- 转录分析显示,在第二次暴露期间,差异表达的基因和修订的反应模式较少,这表明了转录记忆.
- 鉴定了2,213个盐应激记忆基因 (SMGs),其中一个显著的群体在初始和复发性压力之间显示反向表达模式.
- 九个转录因子 (TF) 被确定为SMG的关键调节者,控制了53%以上的SMG.
结论:
- 玉米表现出开发盐应激记忆的能力.
- 确定的SMG和TF为玉米和其他作物进行基因改进提供了有价值的目标,以提高盐分耐受性.
更多相关视频
相关概念视频
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
13.5K
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.
13.5K
02:41Responses to Drought and Flooding
10.7K
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.
10.7K
01:57Adaptations that Reduce Water Loss
25.6K
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.
25.6K