鉴定了一种关键的信号网络,该网络调节了Panax人参的长生芽休眠状态
Jeoungeui Hong1,2, Soeun Han1, Kyoung Rok Geem1
1Department of Biology, Chungbuk National University, Cheongju, Republic of Korea.
Journal of ginseng research
|September 12, 2024
概括
植物荷尔蒙,特别是酸 (ABA),调节Panax人参的季节性芽休眠. 压力信号通路对于维持休眠状态至关重要,ABA信号组件与休眠状态直接相关.
科学领域:
- 植物生理学 植物生理学
- 分子生物学分子生物学
- 基因组学就是基因组学.
背景情况:
- 季节性休眠是多年生植物面临恶劣冬季条件的重要适应.
- 植物荷尔蒙关键调节芽休眠,受到内部和外部线索的影响.
- 全球变暖引起的温度异常破坏了多年生植物的休眠周期,需要进一步的研究.
研究的目的:
- 为了研究Panax人参中芽休眠的基础分子机制.
- 为了比较全基因组RNA测序和网络分析的P.人参品种与不同的休眠断裂表型.
- 阐明植物激素和压力信号在调节芽休眠中的作用.
主要方法:
- 在三种P.人参品种中进行全基因组RNA测序 (RNA-seq) 的比较.
- 网络分析以确定关键的监管途径.
- 基因组丰富分析以了解转录网络.
主要成果:
- 酸 (ABA) 在调节芽休眠中发挥着核心作用.
- 一个涉及压力激素反应的转录网络显著促进了休眠状态的维持.
- 寒冷反应和光合作用基因的升级与从休眠状态到活跃生长的过渡有关.
- ABA载体,PYR/PYL受体,PP2C和DELLA蛋白的表达模式与休眠状态有关.
结论:
- 在Panax人参中,ABA和压力信号相互连接在一个关键网络中,调节芽休眠状态.
- 这项研究提供了关于芽休眠调节的分子见解,以应对季节变化.
- 了解这些机制对于多年生植物的适应策略至关重要.
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
Interactions Between Signaling Pathways
6.2K
Signaling cascades usually lack linearity. Multiple pathways interact and regulate one another, allowing cells to integrate and respond to diverse environmental stimuli.
Convergence and divergence, and cross-talk between signaling pathways
Two distinct signaling pathways can converge on a single functional unit, which may either be a single protein or a complex of proteins. The response is either functionally distinct or synergistic between the two pathways but different from the response...
Convergence and divergence, and cross-talk between signaling pathways
Two distinct signaling pathways can converge on a single functional unit, which may either be a single protein or a complex of proteins. The response is either functionally distinct or synergistic between the two pathways but different from the response...
6.2K
Amplifying Signals via Enzymatic Cascade
8.4K
When a ligand binds to a cell-surface receptor, the receptor's intracellular domain changes shape, which may either activate its enzyme function or allow its binding to other molecules. The initial signal is amplified by most signal transduction pathways. This means that a single ligand molecule can activate multiple molecules of a downstream target. Proteins that relay a signal are most commonly phosphorylated at one or more sites, activating or inactivating the protein. Kinases catalyze...
8.4K
Endocrine Signaling
64.1K
Endocrine cells produce hormones to communicate with remote target cells found in other organs. The hormone reaches these distant areas using the circulatory system. This exposes the whole organism to the hormone but only those cells expressing hormone receptors or target cells are affected. Thus, endocrine signaling induces slow responses from its target cells but these effects also last longer.
64.1K
Hedgehog Signaling Pathway
7.3K
The Hedgehog gene (Hh) was first discovered due to its control of the growth of disorganized, hair-like bristles phenotype in Drosophila, much like hedgehog spines. Hh plays a crucial role in the development of organs and the maintenance of homeostasis in both invertebrates and vertebrates. However, while Drosophila has only one Hh protein, mammals have multiple functional Hedgehog proteins - Sonic (Shh), Desert (Dhh), and Indian Hedgehog (Ihh). All of these homologous proteins have adapted to...
7.3K
Assembly of Signaling Complexes
5.7K
Multiprotein signaling complexes are formed in a dynamic process involving protein-protein interactions at the cytoplasmic domain of transmembrane receptors or enzymatic and non-enzymatic proteins associated with the receptor. These complexes ensure the activation and propagation of intracellular signals that regulate cell functions.
Interaction domains in cell signaling
Interaction domains recognize exposed features of their binding partners containing post-translationally modified sequences,...
Interaction domains in cell signaling
Interaction domains recognize exposed features of their binding partners containing post-translationally modified sequences,...
5.7K


