Presymbiotic activation of karrikin signaling creates a permissive state for arbuscular mycorrhizal symbiosis by derepressing the NSP1-NSP2-SLR1 transcriptional complex in rice

Key Points

• Arbuscular mycorrhizal symbiosis is significantly enhanced by presymbiotic karrikin signaling, creating a favorable environment for root interactions.
• The study highlights a specific transcriptional complex, NSP1-NSP2-SLR1, that is derepressed, leading to improved symbiotic performance with fungi.
• Using detailed molecular analysis, the research focused on karrikin's role in activating certain plant pathways involved in symbiotic relationships.
• These findings indicate potential agricultural applications, supporting crop health through enhanced soil-fungi interactions.