通过细胞壁重塑对TOR途径对植物生长的影响
Maria Juliana Calderan-Rodrigues1, Camila Caldana2
1Max-Planck Institut für Molekulare Pflanzenphysiologie, 14476, Potsdam-Golm, Germany; Universidade de São Paulo, Escola Superior de Agricultura "Luiz de Queiroz", 13418-900, Piracicaba, SP, Brazil.
Journal of plant physiology
|February 29, 2024
概括
拉帕素的目标 (TOR) 途径整合了碳和能量状态,以调节植物生长. TOR信号影响细胞壁的合成和重塑,以响应营养素,激素和环境线索,以实现最佳的植物发育.
科学领域:
- 植物生物学 植物生物学
- 分子植物生理学分子植物生理学
- 生物化学 生物化学
背景情况:
- 植物的生长和发育基本上取决于碳和能源的可用性.
- 拉巴胺素 (TOR) 途径的目标作为一个中央调节器,感知和整合代谢状态以控制生长.
- 细胞壁合成是同化碳的主要吸收器,必须严格调节,以实现最佳的植物发育.
研究的目的:
- 阐明TOR途径在将碳和能量状态与细胞壁合成和植物生长相结合方面的作用.
- 探索TOR信号如何调节细胞壁组成和重塑以响应环境线索.
- 讨论营养感应,TOR活动和植物细胞壁路径之间的相互作用.
主要方法:
- 文献综述和对TOR信号传递,碳代谢和植物细胞壁生物学现有研究的综合.
- 对TOR整合环境信号 (营养素,压力,激素) 来影响生长的调节机制的分析.
- 讨论TOR介导信号对细胞分裂,扩张和细胞壁沉积的影响.
主要成果:
- 托尔信号是一个关键的传感器,将植物碳状况与发育过程联系起来,包括细胞生长和扩张.
- TOR活动直接影响细胞壁组件的合成和沉积,影响整体植物生物质.
- 环境因素和植物激素调节TOR信号,从而影响细胞壁重塑和适应.
结论:
- 该TOR途径是代谢和环境信号的关键集成者,通过调节细胞壁动态来控制植物生长.
- 了解TOR在细胞壁生物合成和重塑中的作用,对于优化植物发育和抗压能力至关重要.
- 对TOR介导的营养和激素信号通路的进一步研究可以揭示改善作物的新策略.
更多相关视频
相关概念视频
01:02Role of Microtubules in Cell Wall Deposition
2.4K
Microtubules are small hollow tubes in eukaryotic cells. The cell wall microtubules are polymerized dimers of two globular proteins, α-tubulin and β-tubulin, two globular proteins. With a diameter of about 25 nm, microtubules are the widest components of the cytoskeleton. They help the cell resist compression and provide a track along which vesicles move through the cell or pull replicated chromosomes to opposite ends of a dividing cell. Microtubules go through quick cycles of...
2.4K
02:43Plant Cell Wall
56.6K
The plant cell wall gives plant cells shape, support, and protection. As a cell matures, its cell wall specializes according to the cell type. For example, the parenchyma cells of leaves possess only a thin, primary cell wall.
56.6K
01:25Cell 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
02:19Morphogenesis
28.1K
Plant morphogenesis—the development of a plant’s form and structure—involves several overlapping developmental processes, including growth and cell differentiation. Precursor cells differentiate into specific cell types, which are organized into the tissues and organ systems that make up the functional plant.
28.1K
03:03mTOR Signaling and Cancer Progression
3.8K
The mammalian target of rapamycin or mTOR protein was discovered in 1994 due to its direct interaction with rapamycin. The protein gets its name from a yeast homolog called TOR. The mTOR protein complex in mammalian cells plays a major role in balancing anabolic processes such as the synthesis of proteins, lipids, and nucleotides and catabolic processes, such as autophagy in response to environmental cues, such as availability of nutrients and growth factors.
The mTOR pathway or the...
The mTOR pathway or the...
3.8K
01:14Cell Adhesion in Plants
2.7K
Plants have rigid cell walls that are made up of cell wall polysaccharides that mediate cell-cell adhesion. The primary cell walls of plants consist of two independent and interacting polysaccharide networks: a pectin matrix that embeds the second network comprising cellulose and hemicelluloses.
Pectins are complex heteropolymers mainly composed of negatively-charged α-D-glucopyranosyl uronic acid and some neutral glycosyl residues such as α-L-rhamnopyranose, α-L-arabinofuranose,...
Pectins are complex heteropolymers mainly composed of negatively-charged α-D-glucopyranosyl uronic acid and some neutral glycosyl residues such as α-L-rhamnopyranose, α-L-arabinofuranose,...
2.7K