新兴的策略可以提高作物中耐热应激的耐受性
Jiawei Xiong1, Hao Wang1, Zhaohui Zhong1
1State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Rice Research Institute, Sichuan Agricultural University, Chengdu, 611130 China.
aBIOTECH
|March 10, 2025
概括
植物面临热应激 (HS) 的挑战,影响生长和产量. 了解HS反应机制和利用基因编辑的精密育种可以开发出更耐热的作物,以实现未来的粮食安全.
科学领域:
- 植物科学 植物科学
- 分子生物学分子生物学
- 农业学是一种农业学.
背景情况:
- 热应激 (HS) 在多个层面上显著影响植物生理学.
- 植物对HS的敏感性因物种和发育阶段而异,这复杂化了HS影响评估.
- 传统的HS耐受性育种受到遗传多样性的限制.
研究的目的:
- 审查最近关于主要谷物作物的HS影响的研究.
- 为了确定参与植物HS反应的关键基因.
- 为精确的分子育种和基因编辑策略提供见解,以提高作物耐热性.
主要方法:
- 关于谷物作物的热应激最近研究的文献综述.
- 对HS反应背后的分子和遗传机制的分析.
- 讨论包括自然变异和基因编辑在内的育种策略.
主要成果:
- HS反应涉及复杂的分子,细胞和生物体过程.
- 在谷物作物中确定了可能调节HS反应的关键基因.
- 有利的自然变异和基因编辑方法为改善HS耐受性提供了潜力.
结论:
- 了解HS反应机制对于开发耐热作物至关重要.
- 精确的育种和基因编辑,利用已识别的基因和变异,可以提高作物的弹性.
- 专注于热记忆,综合应激耐受性和应激反应-生长平衡对于未来的作物改善至关重要.
相关概念视频
Responses to Heat and Cold Stress
13.3K
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.
13.3K
Adaptations 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
Responses to Drought and Flooding
10.6K
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.
10.6K
Responses to Salt Stress
12.9K
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.
12.9K
Methods of reducing fever
638
The signs and symptoms of fever include hot and dry skin, flushed face, thirst, muscle aches, anorexia, headache, tachycardia, tachypnea, and fatigue. Elevated body temperature is reduced using two methods: pharmacological and nonpharmacological. Proper identification and treatment of the root cause of a fever is of utmost importance.
Pharmacological Methods of Reducing Fever:
Pharmacological Methods of Reducing Fever:
638
Decreased Body Temperature
599
A decreased body temperature can occur in patients with hypothermia and frostbite. Heat loss with extended cold exposure overpowers the body's ability to create heat, resulting in hypothermia. Core temperature readings help classify hypothermia. Mild hypothermia is temperatures between 32 °C (89.6 °F) and 35°C (95 °F) and is caused by impaired thermoregulation. Moderate hypothermia is temperatures between 28 C (82.4 °F) and 32 °C (89.6 °F) caused by...
599


