Calmodulin mediates the control of a large number of enzymes, ion channels and other proteins by Ca(2+) (PubMed:21419340). Among the enzymes to be stimulated by the calmodulin-Ca(2+) complex are a number of protein kinases and phosphatases (PubMed:21419340). Activates MPK8 in vitro (PubMed:21419340). Required during nonhost resistance (NHR) to the nonadapted fungal pathogens Phakopsora pachyrhizi and Blumeria graminis f.sp. hordei, probably via its Ca(2+)-dependent interaction with ABCG36 (PubMed:26315018). Interacts with MPK8 (PubMed:21419340). Binds to ABCG36 in a Ca(2+)-dependent manner (PubMed:26315018). Co-localizes with ABCG36 at the cytoplasm/plasma membrane interface. Compromised nonhost resistance (NHR) to the nonadapted fungal pathogens Phakopsora pachyrhizi and Blumeria graminis f.sp. hordei. This protein has four functional calcium-binding sites. Belongs to the calmodulin family.