Biological control is a growing branch in Brazil, and with it comes the need to obtain efficient enemies of pests. The use entomopathogens has expanded investigate their selectivity non-target organisms. present work was conducted pinecone (Annona squamosa L.) orchard objective evaluating which locations plant (lower, middle or upper third) effects entomopathogens: Beauveria bassiana, Metharhiz...

(3-Epimerization in the corrinoid system has recently emerged as a complicating factor in the latter stages of the total synthesis of vitamin B12 (Eschenmoser 1971; Woodward 1973). I t has also found some application in biosynthetic studies on the origin of the methyl groups in ring C (Scott, Townsend & Cushley 1973; Scott, this Discussion p. 303). This paper sets out to review briefly the (3-e...

Methanococcus deltae DLH was grown on H2-CO2 in the presence of various concentrations of furfural. Furfural at higher concentrations, namely, 20 and 25 mM, inhibited growth of this organism. At concentration of 5 and 10 mM, no inhibition of growth was observed. The other methanogens in this study were not inhibited by 10 mM furfural. Among the methanogens tested, M. deltae was capable of trans...

A newly described strain of the genus Methanosarcina was isolated from submarine canyon sediments and is shown by comparative sequence analyses of 16S ribosomal DNA and the gene encoding methyl coenzyme M reductase, mcrI, to be a strain of Methanosarcina siciliae. Morphological and physiological characteristics are described. In contrast to the two previously described strains that grow exclusi...