相关实验视频
Updated: Jun 26, 2025

09:33
Scalable, Flexible, and Cost-Effective Seedling Grafting
Published on: January 6, 2023
1.8K
miR394调节了布拉西诺固醇信号传递,以调节阿拉比多普西斯中的阴囊细胞延长
Shuo Li1, Zhongjuan Zhao1,2, Qing Lu1
1The Key Laboratory of Plant Development and Environmental Adaptation Biology, Ministry of Education, School of Life Sciences, Shandong University, Qingdao, 266237, People's Republic of China.
The Plant journal : for cell and molecular biology
|May 18, 2024
概括
像miR394这样的microRNAs (miRNAs) 通过与brassinosteroid (BR) 信号交互来调节植物生长. 这项研究揭示了miR3944.
科学领域:
- 植物生物学 植物生物学
- 分子生物学分子生物学
- 遗传学 遗传学 是一个
背景情况:
- 植物的生长和生存取决于通过微RNA (miRNA) 和植物激素整合信号.
- 铜类固醇 (BRs) 是关键的植物激素,调节各种发育过程,包括 hypocotyl 延长.
- 微RNA和BR信号通路之间的相互作用对于优化植物对环境条件的反应至关重要.
研究的目的:
- 调查miR394及其向基因叶子曲线响应 (LCR) 在Arabidopsis thaliana中 hypocotyl延长过程中在brassinosteroid (BR) 信号传递中的作用.
- 阐明miR394影响BR信号组件和下游目标的遗传和分子机制.
- 了解miR394是如何在对BR的反应中对hypocotyl生长的调节作出贡献的.
主要方法:
- 转基因和突变的阿拉比多普西斯菌株的表型分析.
- 基因分析以确定miR394在BR信号通路中的位置.
- 用RNA测序来识别由miR394和BIN2.2调节的基因.
- 对蛋白质积累和基因转录水平的分析.
主要成果:
- miR394 负面调节皮细胞延长中的 BR 信号,而 LCR 则正面调节.
- miR394在BIN2,BZR1和BES1的上游运行,并与BRI1和BSU1相互作用.
- RNA-seq数据表明miR394通过BIN2抑制BR信号传递,共享许多共同的目标基因.
- miR394增加了BIN2的积累,但减少了BZR1和BES1的积累,影响了下游的基因转录.
结论:
- miR394在Arabidopsis中调节BR信号方面发挥着新的作用.
- 该miR394-LCR模块是BR通路内 hypocotyl延长的一个关键调节器.
- 这项研究揭示了一个复杂的调节网络,涉及miRNA,植物激素和植物发育中的关键信号组件.
更多相关视频
相关概念视频
Cell Signaling in Plants
5.6K
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...
5.6K
Short-distance Transport of Resources
16.0K
Short-distance transport refers to transport that occurs over a distance of just 2-3 cells, crossing the plasma membrane in the process. Small uncharged molecules, such as oxygen, carbon dioxide, and water, can diffuse across the plasma membrane on their own. In contrast, ions and larger molecules require the assistance of transport proteins due to their charge or size. Transport across membranes also occurs within individual cells, playing a variety of essential roles for the plant as a whole.
16.0K
Plant Hormones
23.9K
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.
23.9K
Regulation of Transpiration by Stomata
28.2K
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.
28.2K
Biological Clocks and Seasonal Responses
34.6K
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.
34.6K

