Four new ambuic acid derivatives (1-4), and four known derivatives (5-8), were isolated from the solid culture of a plant pathogenic fungus Pestalotiopsis neglecta. Their structures were elucidated by extensive NMR experiments. The absolute configuration of the C-16 secondary alcohol in 1 was deduced via the CD data of the in situ formed [Rh2(OCOCF3)4] complex with the acetonide derivative of 1...

Abstract The genus Ceratocystiopsis ( Ophiostomatales , Ascomycota ) includes 21 species, which can be found mainly in association with bark beetles the Northern Hemisphere. A survey of species associated infesting Picea abies and Pinus sylvestris Norway yielded 126 isolates, representing neglecta rollhanseniana four described herein as chalcographii debeeria norroenii troendelagii . new taxa w...

The arginase tissue distribution, the biochemical properties of the argininolytic system and the subcellular localization of the enzymes carbamoylphosphate synthetase, ornithinecarbamoyl transferase, glutamine synthetase and arginase in Antarctic fish, N. neglecta and N. rossii were the main aims of the present work. The tissue with highest argininolytic activity was the kidney distal portion a...

Based on analyses of concatenated internal transcribed spacer regions of the nrDNA operon (ITS), large subunit rDNA (LSU), γ-actin and β-tubulin gene sequences the taxonomy of coniothyrium-like fungi belonging in the family Montagnulaceae, order Pleosporales, was re-assessed. Two new genera are proposed, Alloconiothyrium, to accommodate A. aptrootii sp. nov., and Dendrothyrium for D. longisporu...

J. Med. Entomol. 25(1): 32-38 (1988) ABSTRACT Seasonal abundance of ectoparasites was estimated from monthly collections of Eastern (Sturnella magna (L.)) and Western (Sturnella neglecta Audubon) meadowlarks in Starr County, Tex. Ecological relationships of ticks, Amblyomma maculatum Koch, Amblyomma inornatum (Banks), and Haemaphysalis leporispalustris (Packard) (Acari: Ixodidae); lice, Menacan...