Over the Suppressor from Phytophthora infestans Single Molecule Signaling in Hypersensitive Cell Death of Host Cell against Ca2+-Dependent Protein Kinases

Abstract

The interaction between plants and a suppressor or a host-selective toxin (HST) producing pathogen leads often to suppression of rapid and localized cell death in the context of a hypersensitive response [1]. The suppressor for hypersensitive response (HR) was reported from Phytophthora infestans [1]. The elicitor of hyphal wall of P. infestans was also reported from Tomiyama group [2]. Recently, we have reported the isolation of PiPE effector gene from P. infestans, of which peptide induce the generation of active oxygen species (AOS) and HR cell death in potato and tomato [3]. In these reported physiological events for the induction of HR and AOS generation, and the inhibition of these resistance responses, Ca2+-dependent protein kinase (CDPK) was involved in for the signal cascades in host cell[4,5]. It was suggested that CDPK molecule is a switch for the induction or the inhibition of HR response in host cell (2008) [4,6].