Reciprocal regulation of nitrate and jasmonate signaling by JASMONATE ZIM DOMAIN PROTEIN 1 coordinates plant growth
Wenjiang Pu1, Weicheng Wang2, Ran Du3
1School of Biological Sciences and Technology, Beijing Forestry University, Beijing, 100083, China.
Abstract:
Nitrate (NO3 -) and jasmonates (JAs) are essential signaling molecules that regulate plant growth and defense responses, respectively. However, the molecular mechanism underlying their crosstalk remains to be elucidated. Here, we uncovered the reciprocal regulation between NO3 - and JAs through the key integrator JASMONATE ZIM DOMAIN PROTEIN 1 (JAZ1). We found that NIN-LIKE PROTEIN 7, a central transcription factor in NO3 - signaling, directly activates JAZ1 expression by binding to its promoter, thereby suppressing JA-mediated defense responses under high NO3 - conditions. Conversely, JA signaling inhibited NO3 --promoted growth via CORONATINE-INSENSITIVE 1-mediated degradation of JAZ1, which releases transcriptional repressors LATERAL ORGAN BOUNDARY DOMAIN37/38 (LBD37/38) to downregulate NO3 --responsive genes. Our findings underscore the dynamic interplay between nutrient availability and hormone signaling in shaping plant development and defense, which could offer potential strategies for improving crop resilience.
More Related Videos
07:55Luciferase Complementation Imaging Assay in Nicotiana benthamiana Leaves for Transiently Determining Protein-protein Interaction Dynamics
Published on: November 20, 2017
04:11Pattern-Triggered Oxidative Burst and Seedling Growth Inhibition Assays in Arabidopsis thaliana
Published on: May 21, 2019
Related Concept Videos
Cell Signaling in Plants
Regulation of Transpiration by Stomata
Meristems and Plant Growth
Nitric Oxide Signaling Pathway
Plant Hormones
Short-distance Transport of Resources
