LysM Receptor Kinase Gene and Legume Perception of Rhizobial Signals: Role of Nod Factors in Symbiotic Signaling

This article discusses the role of a LysM-type receptor kinase gene in legume perception of rhizobial signals. Specifically, it mentions that Nod factors trigger the plant's symbiotic signaling process.

Nod factors are signaling molecules secreted by rhizobia. When they interact with the LysM-type receptor kinases in legume roots, they initiate a series of signaling events that activate the symbiotic signaling pathway.

This pathway involves crucial molecules and regulators, such as Nod factor receptor 1 (NFR1) and Nod factor receptor 5 (NFR5), and their downstream signaling cascades. These events ultimately result in the generation of calcium pulses in the nucleus, a hallmark of symbiotic responses. These calcium pulses are decoded by subsequent protein kinases (like CCaMK) and interact with other regulatory factors (like CYCLOPS and NSP2), further activating and regulating the expression of symbiosis-related genes.

Therefore, the article suggests that Nod factors induce symbiotic signaling in legumes, facilitating the establishment and development of a symbiotic relationship with rhizobia. This process is vital for nitrogen fixation by rhizobia and plant growth and development.