title: Methyl anthranilate and γ-decalactone inhibit strawberry pathogen growth and achene Germination.
abstract: Plant volatile compounds have been shown to affect microbial growth and seed germination. Here two fruity volatiles found in strawberry ( Fragaria × ananassa ), γ-decalactone ("peachlike" aroma) and methyl anthranilate ("grapelike" aroma), were tested for effects on relevant pathogens and seedling emergence. Significant growth reduction was observed for Botrytis cinerea , Colletotrichum gloeosporioides , Colletotrichum acutatum , Phomopsis obscurans , and Gnomonia fragariae at 1 mM γ-decalactone or methyl anthranilate, and 5 mM γ-decalactone or methyl anthranilate supplemented medium resulted in complete cessation of fungal growth. Phytophthora cactorum was especially sensitive to 1 mM γ-decalactone, showing complete growth inhibition. Bacteriostatic effects were observed in Xanthamonas cultures. Postharvest infestations on store-bought strawberries were inhibited with volatile treatment. The γ-decalactone volatile inhibited strawberry and Arabidopsis thaliana germination. These findings show that two compounds contributing to strawberry flavor may also contribute to shelf life and suggest that γ-decalactone may play an ecological role by preventing premature germination.
authors: Horticultural Sciences Department, University of Florida , Gainesville, Florida 32611, United States.
authors: Alan H
authors: AH
authors: Chambers
authors: Shane Alan
authors: SA
authors: Evans
authors: Kevin M
authors: KM
authors: Folta
mesh_terms: D001419:Bacteria / Q000187:drug effects* / Q000254:growth & development; D031985:Fragaria / Q000737:chemistry* / Q000254:growth & development / Q000382:microbiology; D005658:Fungi / Q000187:drug effects* / Q000254:growth & development; D007783:Lactones / Q000494:pharmacology*; D010935:Plant Diseases / Q000382:microbiology*; D010936:Plant Extracts / Q000494:pharmacology*; D012639:Seeds / Q000254:growth & development*; D062367:ortho-Aminobenzoates / Q000494:pharmacology*
chemical_list: D007783:Lactones; D010936:Plant Extracts; D062367:ortho-Aminobenzoates; C109757:decan-4-olide; C038892:methyl anthranilate