提高小麦的弹性:生物技术在打击热应激和环境挑战方面的进步
Muhammad Arif1,2, Muhammad Haroon3, Ayesha Fazal Nawaz4
1College of Agriculture, Guizhou University, Guiyang, Guizhou, China.
Plant molecular biology
|March 9, 2025
概括
气候变化通过热应激威胁到小麦生产,影响产量和全球粮食安全. 使用先进的育种和遗传技术开发弹性小麦品种对于适应至关重要.
科学领域:
- 农业科学 农业科学
- 气候变化生物学 气候变化生物学
- 植物遗传学 植物遗传学
背景情况:
- 由于气候变化导致的全球气温上升正在严重影响全球农业系统.
- 作为全球重要粮食来源的小麦,由于热应激,增长加速和谷物填充量减少,面临着显著的产量减少.
- 热浪的频率和强度增加,特别是在缺水地区,加剧了小麦生产的挑战,并威胁到粮食安全.
研究的目的:
- 突出气候变化下的热应激对小麦生产的严重威胁.
- 强调迫切需要适应性战略,包括育种和转基因技术,以提高小麦的弹性.
- 为未来的粮食安全,强调开发多重耐压的小麦品种的必要性.
主要方法:
- 审查由于气候变化引起的热应激导致的小麦种植当前的挑战.
- 讨论现代育种技术和转基因技术 (CRISPR/Cas9,TALENs,ZFNs) 用于改善小麦的特征.
- 对小麦品种多重压力耐受性需求的分析.
主要成果:
- 热应激加速小麦的发育,减少谷物填充,降低产量,对全球粮食安全构成风险.
- 像CRISPR/Cas9这样的先进遗传工具正在使小麦具有更好的抗压能力的发展成为可能.
- 目前的战略重点是单一压力耐受性,但多重压力耐受性被认为是未来气候适应的关键.
结论:
- 迫切需要制定适应性战略和适应性小麦品种,以减轻气候变化对农业的影响.
- 育种和基因工程方面的创新是提高小麦对热量和其他环境压力的耐受性的关键.
- 未来的研究必须专注于创造多重耐压的小麦品种,以确保在气候变化中可持续的全球粮食安全.
相关概念视频
01:59Plant Breeding and Biotechnology
18.7K
Crop cultivation has a long history in human civilization, with records showing the cultivation of cereal plants beginning at around 8000 BC. This early plant breeding was developed primarily to provide a steady supply of food.
18.7K
02:45Responses 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
02:50Transgenic Plants
7.1K
Recombinant DNA technology called transgenesis is often used to add a foreign gene or remove a detrimental gene from an organism. Such genetically modified organisms are called transgenic organisms.
The first-ever transgenic plant was a tobacco plant developed in 1983 that showed resistance against the tobacco mosaic virus. Since then, many transgenic plants have been developed and commercialized for improving the agricultural, ornamental, and horticultural value of a crop plant. Transgenic...
The first-ever transgenic plant was a tobacco plant developed in 1983 that showed resistance against the tobacco mosaic virus. Since then, many transgenic plants have been developed and commercialized for improving the agricultural, ornamental, and horticultural value of a crop plant. Transgenic...
7.1K
02:41Responses 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
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
02:02Responses 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