The Experts below are selected from a list of 2562 Experts worldwide ranked by ideXlab platform
Shingo Marumo - One of the best experts on this subject based on the ideXlab platform.
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km 01 a brassinolide inhibitor its production isolation and structure from two fungi Drechslera avenae and pycnoporus coccineus
Bioorganic & Medicinal Chemistry, 1998Co-Authors: Seongkie Kim, Makoto Hatori, Makoto Ojika, Youji Sakagami, Shingo MarumoAbstract:A new brassinolide inhibitor, named KM-01, was isolated from the culture filtrates of two fungal species, Drechslera avenae and Pycnoporus coccineus, and the structure with absolute stereochemistry was elucidated as the fatty acid ester of an eremophilane sesquiterpene, bipolaroxin, based on spectroscopic analysis, chemical degradation, and synthesis of the fatty acid.
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biological activity of brassinosteroid inhibitor km 01 produced by a fungus Drechslera avenae
Bioscience Biotechnology and Biochemistry, 1995Co-Authors: Seongkie Kim, Tomoyo Asano, Shingo MarumoAbstract:The biological activity of KM-01, a fungal metabolite isolated from Drechslera avenae, was tested with various bioassays of known plant hormones. It inhibited the action of brassinosteroid dose dependently, whereas no activity was observed with auxin and cytokinin bioassays. Although a synergistic effect with GA3 at low concentrations and an inhibitory effect on ABA were observed, we conclude that KM-01 is the first selective brassinosteroid inhibitor found in natural sources.
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a brassinolide inhibitor km 01 its isolation and structure elucidation from a fungus Drechslera avenae
Tetrahedron Letters, 1994Co-Authors: Seongkie Kim, Katsuhiko Mizuno, Makoto Hatori, Shingo MarumoAbstract:Abstract A first brassinolide-inhibitor named KM-01 was isolated from a fungus, Drechslera avenae, and its structure with absolute stereochemistry determined as the fatty acid ester of bipolaroxin.
Krishnapillai Sivasithamparam - One of the best experts on this subject based on the ideXlab platform.
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metabolites of a Drechslera sp endophyte with potential as biocontrol and bioremediation agent
Natural Product Research, 2020Co-Authors: Giada Derrico, Veronica Aloj, Gavin R Flematti, Krishnapillai Sivasithamparam, Carol M Worth, Nadia Lombardi, Alberto Ritieni, Roberta Marra, Matteo Lorito, Francesco VinaleAbstract:Endophytic fungi have several well-established beneficial effects on plant health and growth, and are a huge source of bioactive compounds. The endophyte Drechslera sp. strain 678, isolated from th...
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EFFECTS OF STERILE AND NON-STERILE LEACHATES EXTRACTED FROM COMPOSTED EUCALYPTUS BARK AND PINE-BARK CONTAINER MEDIA ON PHYTOPHTHORA SPP
Soil Biology and Biochemistry, 1991Co-Authors: G.e.st.j. Hardy, Krishnapillai SivasithamparamAbstract:Production of sporangia by Phytophthora cinnamomi. Phytophthora cryptogea, Phytophthora citricola, Phytophthora drechsleri and Phytophthora nicotianae var. nicotianae on Miracloth discs was compared in filter-sterilized and non-sterile lcachates extracted from a pine-bark based container medium (NM) and a composted Eucalyptus-bark medium (CEB). Sporangial production of all species was suppressed in non-sterile CEB leachate; whereas, in sterile CEB leachate it was stimulated in comparison to the NM leachate. P. drechsleri and P. cryptogea appeared to require the presence of certain microorganisms to induce zoospore release. Chlamydosporc production by P. cinnamomi was suppressed in CEB lcachates. On cornmcal and water agar mixed with filtcr-stcrilized or non-sterile leachate from NM and CEB. mycelial growth varied with leachate. agar type and Phytuphthora species. Isolates within P. drechsleri and P. cinnamomi responded differently to the extracts.
A Sivanesan - One of the best experts on this subject based on the ideXlab platform.
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Drechslera wirreganensis a new hyphomycete affecting barley in australia
Fungal Biology, 1992Co-Authors: H Wallwork, A Lichon, A SivanesanAbstract:A new species, Drechslera wirreganensis , is described and illustrated. The fungus is a pathogen on barley in South Australia.
Seongkie Kim - One of the best experts on this subject based on the ideXlab platform.
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km 01 a brassinolide inhibitor its production isolation and structure from two fungi Drechslera avenae and pycnoporus coccineus
Bioorganic & Medicinal Chemistry, 1998Co-Authors: Seongkie Kim, Makoto Hatori, Makoto Ojika, Youji Sakagami, Shingo MarumoAbstract:A new brassinolide inhibitor, named KM-01, was isolated from the culture filtrates of two fungal species, Drechslera avenae and Pycnoporus coccineus, and the structure with absolute stereochemistry was elucidated as the fatty acid ester of an eremophilane sesquiterpene, bipolaroxin, based on spectroscopic analysis, chemical degradation, and synthesis of the fatty acid.
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biological activity of brassinosteroid inhibitor km 01 produced by a fungus Drechslera avenae
Bioscience Biotechnology and Biochemistry, 1995Co-Authors: Seongkie Kim, Tomoyo Asano, Shingo MarumoAbstract:The biological activity of KM-01, a fungal metabolite isolated from Drechslera avenae, was tested with various bioassays of known plant hormones. It inhibited the action of brassinosteroid dose dependently, whereas no activity was observed with auxin and cytokinin bioassays. Although a synergistic effect with GA3 at low concentrations and an inhibitory effect on ABA were observed, we conclude that KM-01 is the first selective brassinosteroid inhibitor found in natural sources.
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a brassinolide inhibitor km 01 its isolation and structure elucidation from a fungus Drechslera avenae
Tetrahedron Letters, 1994Co-Authors: Seongkie Kim, Katsuhiko Mizuno, Makoto Hatori, Shingo MarumoAbstract:Abstract A first brassinolide-inhibitor named KM-01 was isolated from a fungus, Drechslera avenae, and its structure with absolute stereochemistry determined as the fatty acid ester of bipolaroxin.
Reijo Karjalainen - One of the best experts on this subject based on the ideXlab platform.
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genetic variation in Drechslera teres populations as indicated by rapd markers
Annals of Applied Biology, 1996Co-Authors: S Peltonen, M Jalli, K Kammiovirta, Reijo KarjalainenAbstract:Summary Random amplified polymorphic DNA (RAPD) was used to assess genetic variation among 48 isolates of Drechslera teres originating from different sites in Finland. RAPD profiles were generated with five arbitrary 10-mer primers and revealed polymorphisms suitable for screening differentiation in this fungal population. Using UPGMA clustering analysis, a similarity coefficient of approximately 63% was observed between all D. teres isolates studied. The variation was, however, distributed on a small scale as different genotypes were found from the same plant. The isolates could not be grouped according to geographic origin, aggressiveness, growth rate or morphological features, indicating that the primers used in this study were neutral markers for these characters. The primers were, however, able to differentiate between isolates of Helminthosporium species (D. teres, Drechslera graminea and Bipolaris sorokiniana).
