在高温下提高花粉管的性能有助于番茄的耐热果生产
Sorel V Yimga Ouonkap1, Meenakshisundaram Palaniappan2, Kelsey Pryze2
1Department of Molecular Biology, Cell Biology, and Biochemistry; Brown University.
bioRxiv : the preprint server for biology
|August 16, 2024
概括
在花粉管生长期间的高温会损害作物产量,特别是在敏感品种. 耐热的番茄品种在高温下表现出增强的花粉管生长,为提高作物耐热性提供了目标.
科学领域:
- 植物生殖生物学 植物生殖生物学
- 农作物科学 农作物科学
- 适应气候变化 适应气候变化
背景情况:
- 气温上升对全球作物生产构成重大威胁,特别是在关键的繁殖阶段.
- 花粉管生长是一个对温度敏感的阶段,对于受精和种子设置在开花植物至关重要.
- 了解热应激对花粉管发育的影响,对于确保在气候变暖下作物产量至关重要.
研究的目的:
- 为了研究高温 (HT) 对番茄花粉管生长阶段的影响,一个模型水果作物.
- 为了比较热敏和耐热的番茄品种在花粉管生长期间对HT的反应.
- 确定花粉管中耐热性背后的分子机制,以增强作物弹性.
主要方法:
- 利用了已知对热应激的不同耐受度的番茄品种.
- 植物暴露于HT,特别是在花粉管生长阶段.
- 评估的水果生物质和种子作为生育指标.
- 在HT下进行了体内和体外花粉管生长试验.
- 分析了花粉管转录组,以确定对HT的分子反应.
主要成果:
- 在花粉管生长期间,HT显著减少了水果生物质和种子,对热敏品种的影响更大.
- 耐热的塔毛利帕斯番茄品种在HT条件下在体内和体外都表现出增强的花粉管生长.
- 转录组分析揭示了热耐受性花粉管中的两种不同的反应模式:诱导的应激反应和持续的生长途径.
- 鉴定出耐热性的关键成分包括增强的活性氧物种 (ROS) 恒温和增加的质合成/沉积在花粉管中.
结论:
- 花粉管生长阶段是提高作物繁殖耐热性的关键目标.
- 耐热品种具有独特的分子机制,包括ROS恒常性和质动力学,这使得它们在繁殖过程中能够抵御热应激.
- 识别和操纵这些途径可以导致更适合高温环境的作物品种的发展.
更多相关视频
06:45Live Imaging of Arabidopsis Pollen Tube Reception and Double Fertilization Using the Semi-In Vitro Cum Septum Method
Published on: February 24, 2023
4.0K
07:01Development of Microfluidic Devices to Study the Elongation Capability of Tip-growing Plant Cells in Extremely Small Spaces
Published on: May 22, 2018
7.4K
相关概念视频
Responses to Heat and Cold Stress
13.4K
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.
13.4K
Transgenic Plants
7.2K
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...
7.2K
Plant Breeding and Biotechnology
18.9K
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.
18.9K
Plant Tissue Culture
37.6K
Plant tissue culture is widely used in both primary and applied science. Applications range from plant development studies to functional gene studies, crop improvement, commercial micropropagation, virus elimination, and conservation of rare species.
37.6K
