title: In vitro inhibition activity of essential oils from some Lamiaceae species against phytopathogenic fungi.
abstract: Natural products have been in focus as alternative, effective and safe materials against the phytopathogens. Investigations show Nepeta oils as effective in controlling the food crops decay. The inhibitory effects of essential oils derived from Nepeta leucophylla, Nepeta ciliaris, Nepeta clarkei and Calamintha umbrosa against five phytopthogenic fungi have been determined. In vitro antifungal activity varied with their constituents and target species. More active being the oils containing oxygenated terpenoids. Helminthosporium maydis was sensitive to the all oils, IC50 values have 43.6-109.3 μg mL(-1). The N. leucophylla oil possessing oxygenated iridoids was more effective against H. maydis (IC50 value of 43.6 μg mL(-1)) while N. ciliaris was more active against Fusarium oxysporum (IC50 value of 219.2 μg mL(-1)). The oils were effective against the spore germination of all the tested plant pathogens.
authors.affiliation: Department of Chemistry, Kumaun University, Nainital 263 002, Uttarakhand, India.
authors.forename: Vinod
authors.initials: V
authors.lastname: Kumar
authors.affiliation: Department of Chemistry, Kumaun University, Nainital 263 002, Uttarakhand, India. Electronic address: mathelacs@gmail.com.
authors.forename: C S
authors.initials: CS
authors.lastname: Mathela
authors.affiliation: Department of Plant Pathology, College of Agriculture, G.B. Pant University of Agriculture & Technology, Pantnagar 263 145, Uttarakhand, India.
authors.forename: A K
authors.initials: AK
authors.lastname: Tewari
authors.affiliation: Department of Plant Pathology, College of Agriculture, G.B. Pant University of Agriculture & Technology, Pantnagar 263 145, Uttarakhand, India.
authors.forename: K S
authors.initials: KS
authors.lastname: Bisht
mesh_terms: D000935:Antifungal Agents / Q000494:pharmacology*; D005658:Fungi / Q000187:drug effects* / Q000254:growth & development / Q000502:physiology; D019686:Lamiaceae; D008826:Microbial Sensitivity Tests; D009822:Oils, Volatile / Q000494:pharmacology*; D013172:Spores, Fungal / Q000187:drug effects / Q000502:physiology
chemical_list: D000935:Antifungal Agents; D009822:Oils, Volatile
keywords: Calamintha umbrosa; Essential oil; Helminthosporium maydis; Lamiaceae; Nepeta; Phytopathogenic fungi