Although ubiquitous, bacteria of the Weissella genus are not given sufficient attention. Many members of the genus were originally classified as Leuconostoc or Lactobacillus. With the development of molecular methods, these phylogenetically closely related bacteria formed a separate group, the Weissella genus. Due to its heterofermentative metabolism, Weissella spp. may cause considerable damag...

The distribution, enumeration, and identification of lactobacilli on vegetable plants were studied in an area described geographically as being subtropical and moist. The lactobacilli were obtained, by means of quantitative enrichment procedures in Rogosa's SL broth, from 35.3% of all samples incubated at 32 C, and from 15.4% of the samples incubated at 45 C. Less than 10 lactobacilli/g of plan...

Bacteriocins are secreted oligopeptides, proteins or protein complexes with antimicrobial activity against strains taxonomically related to the producer organism (2, 10). In recent years, numerous reports have been published on antimicrobial peptides or proteins produced by gram-positive bacteria, including lactic acid bacteria (LAB) (4, 7), and bacteriocins for lactobacilli from different envi...

Lactobacillus fermenti strain 36 is the most frequently used microorganism for the assay of thiamine both in the tube method, (Sarett and Cheldelin, 1944; Fitzgerald and Hughes, 1949), and in the plate method, (Bacharach and Cuthbertson, 1948; Jones and Morris, 1949). Other microorganisms have more recently been suggested for the tube assay; Hoff-Jorgensen and Hansen (1955) used the yeast Kloec...

The type species of the genus Hypocrea (Hypocreaceae, Hypocreales, Ascomycota, Fungi), H. rufa, is re-defined and epitypified using a combination of phenotype (morphology of teleomorphs and anamorphs, and characteristics in culture) and phylogenetic analyses of the translation-elongation factor 1alpha gene. Its anamorph, T. viride, the type species of Trichoderma, is re-described and epitypifie...

Trichoderma viridescens is recognised as a species complex. Multigene analyses based on the translation elongation factor 1-alpha encoding gene (tef1), a part of the rpb2 gene, encoding the second largest RNA polymerase subunit and the larger subunit of ATP citrate lyase (acl1) reveals 13 phylogenetic species with little or no phenotypic differentiation. This is the first use of acl1 in Trichod...

The development of the nymphal stages of Acanthagrion viridescens Leonard was examined under laboratory conditions. Based on specimens collected in Minas Gerais state (Brazilian Southeastern Region), we described and illustrated the last-instar nymph and illustrated the egg and other nymphal stages. The nymphs of A. viridescens went through 11 instars, each of them with an average duration of a...

Wetlands created within disturbed landscapes may be an important key to restoring lost ecosystem functions. Reclaimed mines provide opportunity create wetlands and restore natural features a landscape while benefiting amphibians, taxa affected by habitat loss. A large-scale restoration effort the Monongahela National Forest, West Virginia, USA has resulted in creation of over 1400 small wetland...