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Title: Jasmonate primes plant responses to extracellular ATP
SUMMARY Extracellular ATP (eATP) signaling inArabidopsis thalianais mediated by the purinoceptor P2K1. Previous studies have clarified that the downstream transcriptional responses to eATP involve jasmonate (JA)‐based signaling components such as the JA receptor (COI1) and JA‐responsive bHLH transcription factors (MYCs). However, the specific contributions of JA itself on eATP signaling are unexplored. Here, we report that JA primes plant responses to eATP through P2K1. Our findings show that JA treatment significantly upregulatesP2K1transcription, corroborating our observation that JA facilitates eATP‐induced cytosolic calcium elevation and transcriptional reprogramming in a JA signaling‐dependent manner. Additionally, we find that salicylic acid pre‐treatment represses eATP‐induced plant response. These results suggest that JA accumulation during biotic or abiotic stresses potentiates eATP signaling, enabling plants to better cope with subsequent stress events.  more » « less
Award ID(s):
2048410
PAR ID:
10645723
Author(s) / Creator(s):
 ;  ;  ;  ;  
Publisher / Repository:
Wiley
Date Published:
Journal Name:
The Plant Journal
Volume:
124
Issue:
1
ISSN:
0960-7412
Subject(s) / Keyword(s):
Jasmonic acid extracellular ATP Ca2+ signaling feedforward loop
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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