title: Effect of calcium and calmodulin modulators on the development of Erysiphe pisi on pea leaves.
abstract: The effect of calcium and calmodulin modulators, viz., ethylene glycol bis (beta-amino ethyl ether)-N,N,N',N'-tetraacetic acid (EGTA), a calcium chelator; verapamil, a plasma membrane Ca2+ channel blocker; ruthenium red, an organelle Ca2+ channel blocker; and chlorpromazine, a calmodulin antagonist; on the development of Erysiphe pisi was studied by floating the inoculated leaves on the respective solutions of chemicals. All the modulators affected the development of E. pisi by inhibiting the colony diameter, number of secondary branches, number of hyphal cells per colony and number of haustoria. The calmodulin antagonist was more effective in reducing E. pisi development. The results suggest the possible involvement of calcium and calmodulin in the development of E. pisi on pea leaves.
authors.affiliation: Department of Mycology and Plant Pathology, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi, India. ups@banaras.ernet.in
authors.forename: U P
authors.initials: UP
authors.lastname: Singh
authors.forename: B
authors.initials: B
authors.lastname: Prithiviraj
authors.forename: B K
authors.initials: BK
authors.lastname: Sarma
mesh_terms: D001203:Ascomycota / Q000187:drug effects / Q000254:growth & development* / Q000502:physiology; D002118:Calcium / Q000037:antagonists & inhibitors / Q000502:physiology*; D002121:Calcium Channel Blockers / Q000494:pharmacology; D002147:Calmodulin / Q000037:antagonists & inhibitors / Q000502:physiology*; D002614:Chelating Agents / Q000494:pharmacology; D002746:Chlorpromazine / Q000494:pharmacology; D004533:Egtazic Acid / Q000494:pharmacology; D018532:Pisum sativum / Q000382:microbiology*; D018515:Plant Leaves / Q000382:microbiology*; D012430:Ruthenium Red / Q000494:pharmacology; D014700:Verapamil / Q000494:pharmacology
chemical_list: D002121:Calcium Channel Blockers; D002147:Calmodulin; D002614:Chelating Agents; D012430:Ruthenium Red; D004533:Egtazic Acid; D014700:Verapamil; D002118:Calcium; D002746:Chlorpromazine