番茄干旱耐受性需要一个亚化的外皮
Alex Cantó-Pastor1, Kaisa Kajala1,2, Lidor Shaar-Moshe1,3
1Department of Plant Biology and Genome Center, University of California, Davis, Davis, CA, USA.
Nature plants
|January 3, 2024
概括
植物的根部使用suberin屏障来调节水分. 在番茄中,这种屏障是在外皮形成的,而不是内皮,显示了网络重新连接,以实现独特的空间表达和功能.
科学领域:
- 植物生物学 植物生物学
- 分子生物学分子生物学
- 植物生理学 植物生理学
背景情况:
- 植物根部会形成像苏贝林 (suberin) 这样的细胞扩散屏障,这对于调节水,溶液和气体流动至关重要.
- 苏贝林沉积通常与植物内皮细胞分化有关.
- 番茄内皮体缺乏苏贝林,但它存在于外皮体中,这是阿拉比多普西斯塔利亚纳中缺少的一种细胞类型.
研究的目的:
- 与阿拉比多普西斯内皮相比,研究番茄外皮中的苏贝林调节网络.
- 了解西红中外皮蛋白的遗传基础和功能意义.
主要方法:
- 对番茄和阿拉比多普西斯中的苏贝林调节网络组件的比较分析.
- 关键基因的功能遗传分析,包括番茄MYB92转录因子和ASFT酶.
- 调查外皮性苏贝林在植物缺水反应中的作用.
主要成果:
- 亚素调节网络在番茄外皮和阿拉比多普西斯内皮之间共享组件.
- 该网络呈现出重新连接,导致不同的空间表达模式和基因贡献.
- 外皮的suberin对于番茄的缺水反应至关重要,功能上取代了内皮屏障.
结论:
- 在番茄中,保存的苏贝林网络被重新连接,以驱动外皮亚基化.
- 外皮的suberin提供了一个功能相当于内皮屏障,对水管理至关重要.
- 这凸显了植物发育网络在适应环境因素方面的可塑性.
相关概念视频
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
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
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
02:22Introduction to Plant Diversity
44.7K
From Water to Land
44.7K
02:04Regulation of Transpiration by Stomata
28.3K
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.
28.3K
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