Journal
PLANT PATHOLOGY JOURNAL
Volume 31, Issue 2, Pages 192-194Publisher
KOREAN SOC PLANT PATHOLOGY
DOI: 10.5423/PPJ.NT.10.2014.0112
Keywords
CIM6; flg22 response; mitogen-activated protein kinases (MAPKs); MPK3; MPK6; NPR1; priming; salicylic acid signaling; SID2
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Funding
- Technology Development Program for Agriculture and Forestry [610008-05-5-SB210, 112127-05-3-HD030]
- KRIBB Research Initiative Program
- Golden Seed Project - Ministry of Agriculture, Food and Rural Affairs, Republic of Korea [2013003-04-1-WTD21]
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Pathogen-associated molecular patterns (PAMPs) activate mitogen-activated protein kinases (MAPKs), essential components of plant defense signaling. Salicylic acid (SA) is also central to plant resistance responses, but its specific role in regulation of MAPK activation is not completely defined. We have investigated the role of SA in PAMP-triggered MAPKs pathways in Arabidopsis SA-related mutants, specifically in the flg22-triggered activation of MPK3 and MPK6. cim6, sid2, and npr1 mutants exhibited wild-type-like flg22-triggered MAPKs activation, suggesting that impairment of SA signaling has no effect on the flg22-triggered MAPKs activation. Pretreatment with low concentrations of SA enhanced flg22-induced MPK3 and MYK6 activation in all seedlings except npr1, indicating that NPR1 is involved in SA-mediated priming that enhanced flg22-induced MAPKs activation.
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