Matches in SemOpenAlex for { <https://semopenalex.org/work/W647540426> ?p ?o ?g. }
Showing items 1 to 75 of
75
with 100 items per page.
- W647540426 endingPage "20" @default.
- W647540426 startingPage "14" @default.
- W647540426 abstract "Twenty isolates of Helminthosporium species were obtained from various grass plants and tested for controlling efficacy on the development of plant diseases. An isolate of Helminthosporium sp. TP-4 was chosen and six antibiotic substances were purified from cultures of the fungus by repeated silica gel column chromatography and preparative thin-layer chromatography. They were identified as ophiobolin a, 6-epiophiobolin A, 3-anhydroophiobolin A, 3-anhydro-6-epiophiobolin A, iphiobolin B, and iphiobolin I mainly by mass spectrometry and nuclear magnetic resonance spectrometry. Ophiobolins inhibited the growth of a grampositive bacterium Streptomyces griseus, but were not active against gram-negative bacteria. They also showed an antifungal activity. In in vivo tests, iphiobolin B exhibited potent controlling activities against rice blast, tomato late blight, and wheat leaf rust with control values more than 90% and 70% at concentration of /ml and 100 /ml. Ophiobolin A and 6-epiophiobolin A controlled the development of wheat leaf rust more than 80% at concentrations of 100 /ml and /ml respectively. 3-Anhydro-6-epiophiobolin A was not active against any plant disease. On the other hand, the A-series ophiobolins other than 3-anhydroophiobolin A showed stronger phytotoxic activity in a leaf-wounding assay using 8 plant species than those of 3-anhydroophiobolin A, ophiobolin B, and ophiobolin I. The results indicate that there is little correlation between antifungal activity and phytotoxicity of ophiobolins." @default.
- W647540426 created "2016-06-24" @default.
- W647540426 creator A5009596382 @default.
- W647540426 creator A5051147472 @default.
- W647540426 creator A5062243563 @default.
- W647540426 creator A5087418202 @default.
- W647540426 creator A5087756402 @default.
- W647540426 date "1999-01-18" @default.
- W647540426 modified "2023-09-24" @default.
- W647540426 title "Antibiotic and Phytotoxic Activities of Ophiobolins from Helminthosporium Species" @default.
- W647540426 hasPublicationYear "1999" @default.
- W647540426 type Work @default.
- W647540426 sameAs 647540426 @default.
- W647540426 citedByCount "2" @default.
- W647540426 countsByYear W6475404262013 @default.
- W647540426 countsByYear W6475404262014 @default.
- W647540426 crossrefType "journal-article" @default.
- W647540426 hasAuthorship W647540426A5009596382 @default.
- W647540426 hasAuthorship W647540426A5051147472 @default.
- W647540426 hasAuthorship W647540426A5062243563 @default.
- W647540426 hasAuthorship W647540426A5087418202 @default.
- W647540426 hasAuthorship W647540426A5087756402 @default.
- W647540426 hasConcept C197781089 @default.
- W647540426 hasConcept C199360897 @default.
- W647540426 hasConcept C2779678110 @default.
- W647540426 hasConcept C2779920670 @default.
- W647540426 hasConcept C2780858201 @default.
- W647540426 hasConcept C41008148 @default.
- W647540426 hasConcept C523546767 @default.
- W647540426 hasConcept C54355233 @default.
- W647540426 hasConcept C59822182 @default.
- W647540426 hasConcept C86803240 @default.
- W647540426 hasConcept C89423630 @default.
- W647540426 hasConceptScore W647540426C197781089 @default.
- W647540426 hasConceptScore W647540426C199360897 @default.
- W647540426 hasConceptScore W647540426C2779678110 @default.
- W647540426 hasConceptScore W647540426C2779920670 @default.
- W647540426 hasConceptScore W647540426C2780858201 @default.
- W647540426 hasConceptScore W647540426C41008148 @default.
- W647540426 hasConceptScore W647540426C523546767 @default.
- W647540426 hasConceptScore W647540426C54355233 @default.
- W647540426 hasConceptScore W647540426C59822182 @default.
- W647540426 hasConceptScore W647540426C86803240 @default.
- W647540426 hasConceptScore W647540426C89423630 @default.
- W647540426 hasIssue "1" @default.
- W647540426 hasLocation W6475404261 @default.
- W647540426 hasOpenAccess W647540426 @default.
- W647540426 hasPrimaryLocation W6475404261 @default.
- W647540426 hasRelatedWork W1967643053 @default.
- W647540426 hasRelatedWork W1974336938 @default.
- W647540426 hasRelatedWork W1976419055 @default.
- W647540426 hasRelatedWork W2008165914 @default.
- W647540426 hasRelatedWork W2094310950 @default.
- W647540426 hasRelatedWork W2317706638 @default.
- W647540426 hasRelatedWork W2347302359 @default.
- W647540426 hasRelatedWork W2351272777 @default.
- W647540426 hasRelatedWork W2365756627 @default.
- W647540426 hasRelatedWork W2377444824 @default.
- W647540426 hasRelatedWork W2380223467 @default.
- W647540426 hasRelatedWork W2380953889 @default.
- W647540426 hasRelatedWork W2393436789 @default.
- W647540426 hasRelatedWork W2736614699 @default.
- W647540426 hasRelatedWork W2768339783 @default.
- W647540426 hasRelatedWork W2789127567 @default.
- W647540426 hasRelatedWork W292079468 @default.
- W647540426 hasRelatedWork W336246252 @default.
- W647540426 hasRelatedWork W2297836947 @default.
- W647540426 hasRelatedWork W2730167591 @default.
- W647540426 hasVolume "15" @default.
- W647540426 isParatext "false" @default.
- W647540426 isRetracted "false" @default.
- W647540426 magId "647540426" @default.
- W647540426 workType "article" @default.