在叶子中,Vernalization1抑制了促进开花的FACTOR1-LIKE1,以便在Brachypodium distachyon中及时开花
Shu Liu1, Siyi Chen1, Yang Zhou1
1State Key Laboratory of Rice Biology, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, Zhejiang 310058, China.
The Plant cell
|June 28, 2023
概括
在Brachypodium distachyon中,花抑制剂FPL1和FPL7通过与花激活复合体 (FAC) 相互作用来抑制花. 这种相互作用通过涉及VERNALIZATION1 (VRN1) 的反循环确保了精确的开花时间.
科学领域:
- 植物生物学 植物生物学
- 分子遗传学 分子遗传学
- 农业科学 农业科学
背景情况:
- 调节开花时间对于植物适应和作物产量至关重要.
- 众所周知,促进开花的促进因子1 (FPF1) 促进了开花,但其机制和相关蛋白质尚未完全理解.
- 温带草具有复杂的开花路径,受到环境因素的影响.
研究的目的:
- 在Brachypodium distachyon中描述FPF1-类蛋白质 (FPL1和FPL7) 的功能.
- 阐明FPL1和FPL7调节开花时间的分子机制.
- 定义涉及FPL1,VERNALIZATION1 (VRN1) 和花生激活复合体 (FAC) 在开花启动中的调节循环.
主要方法:
- 蛋白相互作用测试用于研究FPL1/FPL7与FAC组件的相互作用.
- 基因表达分析以评估FPL1/FPL7对VRN1和FT1表达的影响.
- 发起者绑定试验调查VRN1对FPL1.1的调节.
主要成果:
- 在 Brachypodium distachyon 中,FPL1 和 FPL7 作为开花抑制剂起作用.
- FPL1和FPL7抑制FAC活动,限制VRN1的表达,防止过早的FT1积累.
- VRN1直接抑制FPL1的表达,创建一个反循环,允许及时开花.
结论:
- 一个复杂的反调节循环,涉及FPL1,VRN1和FAC,在温带草中微调花期.
- 这种机制确保了正确的FT1表达和足够的FAC形成,以便及时诱导花.
- 了解这个循环,可以了解植物的开花时间控制的分子基础.
更多相关视频
相关概念视频
Biological Clocks and Seasonal Responses
34.8K
The circadian—or biological—clock is an intrinsic, timekeeping, molecular mechanism that allows plants to coordinate physiological activities over 24-hour cycles called circadian rhythms. Photoperiodism is a collective term for the biological responses of plants to variations in the relative lengths of dark and light periods. The period of light-exposure is called the photoperiod.
34.8K
Gene Regulation During Sporulation
41
Sporulation is a complex developmental process that allows certain Gram-positive bacteria, such as Bacillus subtilis and Clostridium species, to survive extreme environmental conditions. This process is tightly regulated by a series of signaling cascades and transcriptional controls, ensuring the formation of a highly resistant endospore.Sporulation is triggered by unfavorable conditions, such as nutrient depletion, and is governed by a phosphorelay system. One of the sensor kinases, such as...
41
Cell Signaling in Plants
5.7K
Plant cells communicate to coordinate their cycle of growth, flowering and fruiting, and activities in roots, shoots, and leaves in response to the changing environmental conditions. Plant signaling is distinct from animal signaling. Plants primarily utilize enzyme-linked receptors, whereas the largest class of cell-surface receptors in animals are G-protein coupled receptors (GPCRs). Unlike animals, receptor tyrosine kinases are rare in plants. Instead, plants have a diverse class of...
5.7K
Regulation of Transpiration by Stomata
28.5K
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.
28.5K
Transgenic Plants
7.3K
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...
7.3K
Plant Hormones
24.3K
Plant hormones—or phytohormones—are chemical molecules that modulate one or more physiological processes of a plant. In animals, hormones are often produced in specific glands and circulated via the circulatory system. However, plants lack hormone-producing glands.
24.3K


