A Gram-negative bacterial isolate, named PG4, was recovered from the rhizosphere of a tobacco plant (Nicotiana tabacum cv. Burley) and was identified as Lysobacter capsici based on the sequencing and phylogenetic analysis of 16S rRNA and characteristics in the Biolog Identification System. Strain PG4 showed chitinase and protease activity and was able to inhibit the growth of a broad range of p...

Osvaldo E. Sala* and Fernando T. Maestre School of Life Sciences and School of Sustainability, Arizona State University, Tempe, AZ 85287, USA; South American Institute for Resilience and Sustainability Studies, SARAS2, Maldonado 20000, Uruguay; and 3 Area de Biodiversidad y Conservaci on, Departamento de Biolog ıa y Geolog ıa, F ısica y Qu ımica Inorg anica Escuela Superior de Ciencias Experime...

An extensive microbiological study has been carried out in a membrane bioreactor fed with activated sludge and metal-working fluids. Functional diversity and dynamics of bacterial communities were studied with different approaches. Functional diversity of culturable bacterial communities was studied with different Biolog™ plates. Structure and dynamics of bacterial communities were studied in c...

Highly diverse communities of bacteria inhabiting soybean rhizospheres play pivotal roles in plant growth and crop production; however, little is known about the changes that occur in these communities during growth. We used both culture-dependent physiological profiling and culture independent DNA-based approaches to characterize the bacterial communities of the soybean rhizosphere during grow...

Five samples of soil collected from a lead and zinc mine were used to assess the effect of combined contamination of heavy metals on soil bacterial communities using a polyphasic approach including characterization of isolates by culture method, community level catabolic profiling in BIOLOG GN microplates, and genetic community fingerprinting by denaturing gradient gel electrophoresis of 16S rD...

These experiments compared the sensitivity of four different types of bioassay over time after five metals were added to a wide range of soils at the maximum concentrations in the European Union Sewage Sludge Directive. Three were chronic assays (most probable number of Rhizobium leguminosarum, soil microbial C and Biolog substrate utilization). The fourth bioassay, an acute biosensor, employed...

Spoilage of heat processed food and beverage by heat resistant fungi (HRF) is a major problem for food industry in many countries. Neosartorya fischeri is the leading source of spoilage in thermally processed products. Its resistance to heat processing and toxigenicity makes studies about Neosartorya fischeri metabolism and chemical sensitivity essential. In this study chemical sensitivity of t...

Resident fruit microflora has been the source of biocontrol agents for the control of postharvest decay of fruits and the active ingredient in commercialized biocontrol products. With the exception of grapes and apples, information on the resident microflora of other fruits is only fragmentary, but greater knowledge in this area can be very helpful in developing biocontrol strategies. We charac...