StbHLH47转录因子对土豆 (Solanum tuberosum L.) 的干旱耐受性进行负面调节
Peijie Wang1, Xiaojuan Wu1, Nan Li1
1Agricultural College, Faculty of Agricultural College, Inner Mongolia Agricultural University, Hohhot, 010019, China.
BMC plant biology
|January 3, 2025
概括
在土豆植物中过度表达StbHLH47基因会增加干旱敏感性,显示为干旱耐受性的负调节者. 这一发现对于开发耐旱的土豆品种至关重要.
科学领域:
- 植物科学 植物科学
- 分子生物学分子生物学
- 遗传学 是一个遗传学.
背景情况:
- 干旱压力显著限制了全球的作物产量.
- 了解植物对干旱的反应是农业恢复力的关键.
- bHLH转录因子对于植物发育和应激反应至关重要.
研究的目的:
- 确定和描述StbHLH47基因在土豆干旱应激耐受性中的作用.
- 在干旱条件下阐明StbHLH47的调节机制.
- 为培育耐旱的土豆品种提供见解.
主要方法:
- 基因克隆和 StbHLH47.7 的分离.
- 亚细胞局部化试验.
- 用于基因表达分析的RNA测序 (RNA-seq) 和RT-qPCR.
- 生理指数测量 (MDA含量,相对导电性).
主要成果:
- StbHLH47定位在核中,并通过转录功能.
- 过度表达StbHLH47 (OE-StbHLH47) 会增加对干旱压力的敏感性.
- 不同基因表达分析揭示了代谢,激素信号传递 (ABA) 和MAPK途径的丰富.
- 在OE-StbHLH47植物中,抗干旱基因 (StNCED1,StERD11) 的表达较低.
结论:
- StbHLH47对土豆的干旱耐受性产生负面调节.
- 过度表达StbHLH47增加了对干旱压力的敏感性.
- 这项研究为了解StbHLH47在干旱应对中的作用提供了理论基础.
相关概念视频
02:04Regulation of Transpiration by Stomata
27.6K
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.
27.6K
02:02Responses to Salt Stress
12.8K
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.
12.8K
02:41Responses to Drought and Flooding
10.5K
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.
10.5K
02:45Responses to Heat and Cold Stress
13.2K
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.
13.2K
01:10Transcription
145.9K
Overview
Transcription is the process of synthesizing RNA from a DNA sequence by RNA polymerase. It is the first step in producing a protein from a gene sequence. Additionally, many other proteins and regulatory sequences are involved in the proper synthesis of messenger RNA (mRNA). Regulation of transcription is responsible for the differentiation of all the different types of cells and often for the proper cellular response to environmental signals.
Transcription Can Produce Different Kinds...
Transcription is the process of synthesizing RNA from a DNA sequence by RNA polymerase. It is the first step in producing a protein from a gene sequence. Additionally, many other proteins and regulatory sequences are involved in the proper synthesis of messenger RNA (mRNA). Regulation of transcription is responsible for the differentiation of all the different types of cells and often for the proper cellular response to environmental signals.
Transcription Can Produce Different Kinds...
145.9K
01:57Adaptations that Reduce Water Loss
25.0K
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.
25.0K