相关实验视频

Updated: Jan 18, 2026

Wide-Field, Real-Time Imaging of Local and Systemic Wound Signals in Arabidopsis

Wide-Field, Real-Time Imaging of Local and Systemic Wound Signals in Arabidopsis

Published on: June 4, 2021

循环核酸道CNGC2和CNGC4支持Arabidopsis thaliana中的系统性伤口反应

Sarah Johns¹, Erin Wiegman¹, Arkadipta Bakshi¹

¹Department of Botany, University of Wisconsin-Madison, Madison, WI, United States.

Frontiers in plant science

|September 8, 2025

概括

循环核酸通道 (CNGCs) 2和4对于在植物中传播伤口诱导的信号至关重要. 这些通道有助于放大整个工厂的防御反应,与最初的损害检测机制不同.

科学领域:

植物生物学植物生物学
分子信号传递是分子信号传递.
离子通道功能离子通道功能

背景情况:

当地植物刺激,如受伤,可以通过系统信号启动整个植物的防御反应.
已知谷氨酸受体类 (GLR) 通道对于伤口诱导的电和 (Ca2+) 信号传播至关重要.
这些信号在血管系统之外传播的确切机制尚不清楚.

研究的目的:

研究循环核酸道 (CNGCs) 在植物中伤口诱导信号的系统传播中的作用.
确定特定的CNGC是否参与在整个植物中传播Ca2+信号和防御基因表达.

主要方法:

量化PCR (qPCR) 用于分析系统性防御基因表达.
使用基于GFP的Ca2+传感器 (GCaMP) 监测 (Ca2+) 信号模式.
野生型植物的反应与各种CNGC突变植物的反应进行了比较.

主要成果:

在CNGC2和CNGC4中的突变体表现出系统性防御基因表达中断和有限的Ca2+波在远端叶子中传播.
虽然在CNGC2和CNGC4突变体中,伤口部位的Ca2+增加是正常的,但它们的系统传播受损.
CNGC19突变体在长距离伤口响应信号中没有出现缺陷.

结论:

CNGC2和CNGC4很可能参与在系统叶子内传播Ca2+信号,从而放大整个植物的伤口反应.
对于局部损害感知的分子机器似乎与介导系统信号传播的分子机器不同.
这些发现凸显了CNGC在整个工厂压力信号中的特殊作用.

关键词:

阿拉比多普西斯塔利亚纳.爵士乐 (JAZ) 爵士乐 (JAZ) 是一种音乐形式.和是一种循环核酸封闭通道2 (CNGC2) 是一个循环核酸封闭通道.循环核酸封闭式通道4 (CNGC4)系统的信号传输系统.伤害伤害伤害伤害的伤害

更多相关视频

Methods for Skin Wounding and Assays for Wound Responses in C. elegans

Methods for Skin Wounding and Assays for Wound Responses in C. elegans

Published on: December 3, 2014

Real-time In Vivo Recording of Arabidopsis Calcium Signals During Insect Feeding Using a Fluorescent Biosensor

Real-time In Vivo Recording of Arabidopsis Calcium Signals During Insect Feeding Using a Fluorescent Biosensor

Published on: August 15, 2017

相关概念视频

Cell Signaling in Plants

Cell Signaling in Plants

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...

C4 Pathway and CAM

C4 Pathway and CAM

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...

Intracellular Signaling Cascades

Intracellular Signaling Cascades

Once a ligand binds to a receptor, the signal is transmitted through the membrane and into the cytoplasm. The continuation of a signal in this manner is called signal transduction. Signal transduction only occurs with cell-surface receptors, which cannot interact with most components of the cell, such as DNA. Only internal receptors can interact directly with DNA in the nucleus to initiate protein synthesis. When a ligand binds to its receptor, conformational changes occur that affect the...

Global Regulatory Systems

Global Regulatory Systems

Global regulatory systems in bacteria enable rapid and coordinated responses to environmental changes by integrating sensory inputs with gene expression, ensuring efficient adaptation to fluctuating conditions. Key global regulatory mechanisms include regulons, two-component systems, sigma factors, and secondary messengers.Regulons and Global RegulatorsA regulon is a collection of genes and operons controlled by a common global regulator. These regulators enable bacteria to prioritize resource...

Activation and Inactivation of G Proteins

Activation and Inactivation of G Proteins

Heterotrimeric G proteins are guanine nucleotide-binding proteins. As the name suggests, heterotrimeric G proteins are composed of three subunits: alpha, beta, and gamma. They remain GDP-bound or GTP-bound inside the cells and switch between inactive/active states. The Gα subunit possesses the nucleotide-binding pocket that binds guanine nucleotides and switches between GDP or GTP-bound states. In contrast, the Gꞵ and Gγ subunits are always bound together with high...

GPCRs Regulate Adenylyl Cylase Activity

GPCRs Regulate Adenylyl Cylase Activity

Some GPCRs transmit signals through adenylyl cyclase (AC), a transmembrane enzyme. AC helps synthesize second messenger cyclic adenosine monophosphate (cAMP). AC catalyzes cyclization reaction and converts ATP to cAMP by releasing a pyrophosphate. The pyrophosphate is further hydrolyzed to phosphate by the enzyme pyrophosphatase, which drives cAMP synthesis to completion. However, cAMP is rapidly degraded to 5′ AMP by the enzymes phosphodiesterase (PDE), preventing overstimulation of...