Structure elucidation of 11-epiterpestacin glycoside (11-ETG) isolated from Bipolaris sorokiniana NSDR-011

Phytotoxic sesterterpene, 11-epiterpestacin, from Bipolaris sorokiniana NSDR-011.

The structure of siccanol, a phytotoxic sesterterpene of fungal origin, was analyzed after chemical conversion by NMR spectroscopy. Siccanol was found to be an epimer of terpestacin that has been isolated from Arthrinium sp., and was thus renamed 11-epiterpestacin. Its stereochemistry was also identical with that of fusaproliferin, a structurally related mycotoxin from Fusarium proliferatum. Th...

REACTION OF BARLEY GENOTYPES TO Bipolaris sorokiniana

A study on response of 29 barley genotypes resistant to Bipolaris leaf blight (Bipolaris sorokiniana) was conducted to investigate the relationship of the components of resistance of 29 barley genotypes. Data on five components of resistance viz., infection frequency (number of lesions per plant), lesion size (mm), percent leaf area affected by lesion, percent necrotic area on leaf, and disease...

The use of RAPD to characterize Bipolaris sorokiniana isolates.

Bipolaris sorokiniana is a phytopathogenic fungus causing diseases of cereal crops such as common root rot, the leaf spot disease, seedling blight, and black point of the grain. Random-amplified polymorphic DNA (RAPD) assay was used to investigate the genetic diversity of 20 isolates collected from different cultivars in wheat-producing regions in Brazil. Seventy primers, with random nucleotide...

Title : Elucidation of the structural and antigenic properties of pneumococcal serotypes 11 A , 1 11 B , 11 C and 11 F polysaccharide capsules 2 3 Running title : Elucidation of serogroup 11 capsule PS

Structure Elucidation of Pandangolide 1 Isolated From Lambertella Brunneola

A macrolide compound known as pandangolide 1 was isolated from fungus Lambertella brunneola. The compound was purified using SiO2 column chromatography while the elucidation of its planar structure was based on the analyses of Nuclear Magnetic Resonance (NMR) spectroscopic data and Mass Spectroscopy (MS). Antifungal assay disclosed that pandangolide 1 weakly showed hyphal growth inhibition agai...