对甘生长中的糖信号通路的生物信息洞察
Lauana Pereira de Oliveira1,2, João Pedro de Jesus Pereira1,2, Bruno Viana Navarro1,2
1Laboratório de Fisiologia Ecológica de Plantas, Departamento de Botânica, Instituto de Biociências, Universidade de São Paulo, São Paulo, Brazil.
Scientific reports
|October 22, 2024
概括
甘是一种糖.
科学领域:
- 植物分子生物学 植物分子生物学
- 生物化学 生物化学
- 基因组学就是基因组学.
背景情况:
- 糖分水平的感知对于植物的新陈代谢和发育至关重要,涉及SnRK1,hexokinase (HXK) 和TORC1.1等关键激酶.
- 了解甘中的这些通路对于提高作物产量和耐压力至关重要.
研究的目的:
- 在甘中识别和描述糖感应激酶通路 (SnRK1,HXK,TORC1).
- 分析它们的遗传关系,祖先和表达模式.
- 为了研究HXK在甘发育过程中的酶活性.
主要方法:
- 甘转录组和基因组数据集的生物信息分析.
- 保护的蛋白质域的识别和植物遗传学分析.
- 在体内预测亚细胞局部化和评估酶活性.
主要成果:
- 对TOR,RAPTOR,LST8,SNRK1α,HXK和HXK类蛋白质确定了许多假定的全长序列.
- 大多数已识别的副本与祖先的甘物种有共同的祖先.
- 在早期的甘种植中观察到HXK酶活性最高,为发育提供必要的营养素.
结论:
- 这项研究为甘的糖感应机制提供了新的见解.
- 已识别的序列作为未来关于甘信号机制和生物技术应用的研究的基础.
相关概念视频
Biosynthesis of Polysaccharides
1
Polysaccharides such as glycogen and starch are synthesized from nucleoside diphosphate sugars, primarily uridine diphosphate glucose (UDPG) and adenosine diphosphate glucose (ADPG). These activated glucose donors act as key intermediates in carbohydrate metabolism and biosynthesis. UDPG primarily involves glycogen synthesis in animals and many bacteria, while ADPG plays a fundamental role in starch synthesis in plants and certain bacteria.UDPG is formed when glucose-1-phosphate reacts with...
1
Phloem and Sugar Transport
36.2K
Like many living organisms, plants have tissues that specialize in specific plant functions. For example, shoots are well adapted to rapid growth, while roots are structured to acquire resources efficiently. However, sugar production is primarily restricted to the photosynthetic cells that reside in the leaves of angiosperm plants. Sugar and other resources are transported from photosynthetic tissues to other specialized tissues by a process called translocation.
36.2K
C4 Pathway and CAM
45.3K
Most plants use the C3 pathway for carbon fixation. However, some plants, such as sugar cane, corn, and cacti that grow in hot conditions, use alternative pathways to fix carbon and conserve energy loss due to photorespiration. Photorespiration is the process that occurs when the oxygen concentration is high. Under such conditions, the rubisco enzyme in the Calvin cycle binds O2 instead of CO2, which halts photosynthesis and consumes energy.
C4 Pathway
The C4 pathway is used by plants such as...
C4 Pathway
The C4 pathway is used by plants such as...
45.3K
Glucose Transporters
22.5K
Glucose transporters facilitate the transport of glucose across the cell membrane. In addition to glucose, some glucose transporters can also aid the movement of other hexoses such as fructose, mannose, and galactose.
Facilitated diffusion-glucose transporters (GLUTs) are encoded by the solute-linked carrier (SLC) family 2, subfamily A gene family, or SLC2A. The 14 GLUT protein members are distributed into three classes:
Facilitated diffusion-glucose transporters (GLUTs) are encoded by the solute-linked carrier (SLC) family 2, subfamily A gene family, or SLC2A. The 14 GLUT protein members are distributed into three classes:
22.5K
Sugars as Energy Storage Molecules
8.4K
Sugar (a simple carbohydrate) metabolism (chemical reactions) is a classic example of the many cellular processes that use and produce energy. Living things consume sugar as a major energy source because sugar molecules have considerable energy stored within their bonds. Consumed carbohydrates have their origins in photosynthesizing organisms like plants. During photosynthesis, plants use the energy of sunlight to convert carbon dioxide gas into sugar molecules, like glucose. Because this...
8.4K
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


