CARACTERIZAÇÃO BIOQUÍMICA DE ISOLADOS BACTERIANOS DE SOLO DE CULTIVO DE VIDEIRA (Vitis sp.).

Viticulture is an important activity for the sustainability of small properties in Brazil, producing table grapes and for processing. In this sense, a preliminary biosprospective study was carried out to evaluate the diversity of soil microbiota used in vine growing. Soil samples were collected from several cultivars of municipalities in the rural area of Santa Catarina. Twenty-one bacterial isolates were obtained. Biochemical identification revealed that 88.88% of the gram negative isolates were Shigella dysenteriae serum group A and 11.11% as Pseudomonas oryzihabitans. Regarding the antimicrobial sensitivity profile, 100% of the isolates were sensitive to three of the antibiotics (Gentamicin, Pipemidic and Chloramphenicol), but 100% of the isolates were resistant to the antibiotics Ceftazidine and Aztreonam. For the gram positive isolates the species Bacillus cereus, B. megaterium, Corynebacterium xerosis and C. pseudodiphtheriticum were identified. In both groups important characteristics were observed for the selection of microorganisms with potential for the availability of nutrients in the soil, contributing to the development of plants, especially the species P. oryzihabitans and B. megaterium. It is considered that the characterization of these microorganisms contributes to the evaluation of soil microbiota diversity as well as for definition of the use of these microorganisms in other studies of biotechnological interest. [ABSTRACT FROM AUTHOR]