黑色生长的化花中的葡萄糖状况决定了光照照射后的苗木脱
Xin-Rong Mu1,2, Yi-Bo Wang3, Qin-Xin Bao1
1The Key Laboratory of Biotechnology for Medicinal Plants of Jiangsu Province, School of Life Science, Jiangsu Normal University, Xuzhou 221116, People's Republic of China.
Plant physiology
|September 22, 2023
概括
植物幼苗使用葡萄糖信号在树中,在暴露于光线时从etiolation过渡到de-etiolation. 这涉及到HEXOKINASE 1 (HXK1),生长调节因子5 (GRF5) 和植物染色体A (phyA) 的调节.
科学领域:
- 植物生物学 植物生物学
- 分子生物学分子生物学
- 生物化学 生化学
背景情况:
- 脱,对于幼苗的生存至关重要,涉及到调动糖到目标器官.
- 将碳水化合物状况与脱化联系起来的分子机制尚未完全理解.
- 动态碳水化合物生物化学对于这种发育过渡至关重要.
研究的目的:
- 阐明协调碳水化合物状况与脱的分子机制.
- 识别葡萄糖信号传递中的关键参与者在转化过程中.
- 了解地下黑暗信号如何影响光介导发育.
主要方法:
- 在Arabidopsis中研究了HEXOKINASE 1 (HXK1) 和生长调节因子5 (GRF5) 之间的相互作用.
- 分析了GRF5与植物染色体A (phyA) 促进体的结合.
- 评估了葡萄糖水平在节中对脱的作用.
主要成果:
- HXK1与转录激活剂GRF5相互作用.
- GRF5直接与光调节基因phyA的促进体结合.
- 乙化花中的葡萄糖水平通过HXK1-GRF5-phyA模块来调节幼苗脱乙化.
- 积累的葡萄糖增加GRF5并降低phyA,促进脱.
结论:
- 建立了一个分子模块 (HXK1-GRF5-phyA),将葡萄糖信号连接到Arabidopsis.
- 证明了在黑暗中节骨的碳水化合物信号决定了光引起的发育过渡.
- 提供了关于植物如何感知,放大和传递碳水化合物信号以进行光形生成的见解.
相关概念视频
02:00Photoreceptors and Plant Responses to Light
20.4K
Light plays a significant role in regulating the growth and development of plants. In addition to providing energy for photosynthesis, light provides other important cues to regulate a range of developmental and physiological responses in plants.
20.4K
01:25Cell 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
02:16Light Acquisition
8.5K
In order to produce glucose, plants need to capture sufficient light energy. Many modern plants have evolved leaves specialized for light acquisition. Leaves can be only millimeters in width or tens of meters wide, depending on the environment. Due to competition for sunlight, evolution has driven the evolution of increasingly larger leaves and taller plants, to avoid shading by their neighbors with contaminant elaboration of root architecture and mechanisms to transport water and nutrients.
8.5K
02:33Seed Structure and Early Development of the Sporophyte
28.3K
Seed structures are composed of a protective seed coat surrounding a plant embryo, and a food store for the developing embryo. The embryo contains the precursor tissues for leaves, stem, and roots. The endosperm and cotyledons—seed leaves—act as the food reserves for the growing embryo.
28.3K