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Cell Wall Damage-Induced Lignin Biosynthesis Is Regulated by a Reactive Oxygen Species- and Jasmonic Acid-Dependent Process in Arabidopsis
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Cell Wall Damage-Induced Lignin Biosynthesis Is Regulated by a Reactive Oxygen Species- and Jasmonic Acid-Dependent Process in Arabidopsis
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Cell Wall Damage-Induced Lignin Biosynthesis Is Regulated by a Reactive Oxygen Species- and Jasmonic Acid-Dependent Process in Arabidopsis
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Journal Article
Cell Wall Damage-Induced Lignin Biosynthesis Is Regulated by a Reactive Oxygen Species- and Jasmonic Acid-Dependent Process in Arabidopsis
2011
Overview
The plant cell wall is a dynamic and complex structure whose functional integrity is constantly being monitored and maintained during development and interactions with the environment. In response to cell wall damage (CWD), putatively compensatory responses, such as lignin production, are initiated. In this context, lignin deposition could reinforce the cell wall to maintain functional integrity. Lignin is important for the plant's response to environmental stress, for reinforcement during secondary cell wall formation, and for long-distance water transport. Here, we identify two stages and several components of a genetic network that regulate CWD-induced lignin production in Arabidopsis (Arabidopsis thaliana). During the early stage, calcium and diphenyleneiodonium-sensitive reactive oxygen species (ROS) production are required to induce a secondary ROS burst and jasmonic acid (JA) accumulation. During the second stage, ROS derived from the NADPH oxidase RESPIRATORY BURST OXIDASE HOMOLOG D and lA-isoleucine generated by IASMONIC ACID RESISTANT1, form a negative feedback loop that can repress each other's production. This feedback loop in turn seems to influence lignin accumulation. Our results characterize a genetic network enabling plants to regulate lignin biosynthesis in response to CWD through dynamic interactions between JA and ROS.
Publisher
American Society of Plant Biologists
Subject
/ Arabidopsis Proteins - metabolism
/ Biological and medical sciences
/ Calcium
/ CELL BIOLOGY AND SIGNAL TRANSDUCTION
/ Cyclopentanes - pharmacology
/ cytology
/ Fundamental and applied biological sciences. Psychology
/ Gene Expression Regulation, Plant
/ Gene Expression Regulation, Plant - drug effects
/ genetics
/ Lignin
/ Mutation
/ Onium Compounds - pharmacology
/ Oxidases
/ oxygen
/ Plant physiology and development
/ Plants
/ Reactive Oxygen Species - metabolism
/ Reverse Transcriptase Polymerase Chain Reaction
