1-Palmitoyl-2-linoleoyl-sn-glycerol

1-Palmitoyl-2-linoleoyl-sn-glycerol is a diacylglycerol (DAG)-type lipid signaling molecule found in the coralloid roots of Cycas revoluta, and serves as a major active component of the plant-secreted hormogonium-inducing factor (HIF). At a concentration of 1 nmol/disc (approximately 0.6 ug), 1-palmitoyl-2-linoleoyl-sn-glycerol can significantly induce the differentiation of filamentous aggregates of Nostoc into motile hormogonia, thereby promoting chemotaxis toward host roots and the establishment of symbiosis. This compound holds significant research and application potential in areas such as plant–microbe interactions, rhizosphere signaling pathways, and nitrogen-fixing symbiosis[1].