Involved in the perception of CLV3 and CLV3-like (CLE) peptides, that act as extracellular signals regulating meristems maintenance. Required for the sensing of the root CLE peptides (e.g. CLE8, CLE9/CLE10, CLE11, CLE13, CLE14, CLE16, CLE17, CLE18, CLE20, CLE21, CLE25, CLE26, CLE40, CLE41/CLE44 and CLE45), which involves also CRN and leads to root growth regulation, mostly in the phloem and protophloem. Involved in controlling the stem cell population size in shoot and root apical meristems, and during organ development. Promotes the formation of CLV1 multimers. In complex with CRN, perceives secreted CLV3-like effector proteins from plant-parasitic cyst nematodes as ligand mimics of the plant CLE signaling pathway. This recognition is required for proper feeding structure (syncytium) development and ultimately successful nematode infection. CLE14 perception by CLV2/CRN complex triggers root meristem differentiation.