Abstract
BackgroundMethyl jasmonate (MeJA), which has been identified as a lipid-derived stress hormone, mediates plant resistance to biotic/abiotic stress. Understanding MeJA-induced plant defense provides insight into how they responding to environmental stimuli.ResultIn this work, the dynamic network analysis method was used to quantitatively identify the tipping point of growth-to-defense transition and detect the associated genes. As a result, 146 genes were detected as dynamic network biomarker (DNB) members and the critical defense transition was identified based on dense time-series RNA-seq data of MeJA-treated Arabidopsis thaliana. The GO functional analysis showed that these DNB genes were significantly enriched in defense terms. The network analysis between DNB genes and differentially expressed genes showed that the hub genes including SYP121, SYP122, WRKY33 and MPK11 play a vital role in plant growth-to-defense transition.ConclusionsBased on the dynamic network analysis of MeJA-induced plant resistance, we provide an important guideline for understanding the growth-to-defense transition of plants’ response to environment stimuli. This study also provides a database with the key genes of plant defense induced by MeJA.
Highlights
In response to changing environments, plants have to manage their resources to reach a balance between growth and defense in order to survive and reproduce [1, 2]
This study provides a database with the key genes of plant defense induced by Methyl jasmonate (MeJA)
Based on the dynamic network analysis of MeJA-induced plant resistance, we provide an important guideline in understanding the growth-defense transition of plant responding to environment stimuli
Summary
In response to changing environments, plants have to manage their resources to reach a balance between growth and defense in order to survive and reproduce [1, 2]. While an effective and inducible defense system at the cost of resources has evolved in plants to resist biotic/abiotic stress [3, 4]. Revealing the basic mechanism of hormone-induced growth-to-defense transition is essential to elucidate how plants respond to environmental stimuli [10, 11] and carry important implications to ecological and agricultural improvement [12, 13]. Methyl jasmonate (MeJA), which has been identified as a lipid-derived stress hormone, mediates plant resistance to biotic/abiotic stress. Understanding MeJA-induced plant defense provides insight into how they responding to environmental stimuli
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