Actinomyces 1992, Vol.3, No.1 BIOLOGICAL AND CHEMICAL CHARACTERIZATION OF THE ANTIBIOTIC ACTIVITY OF STREPTOMYCES SPECIES ISOLATED FROM GRAPEVINE CARPOSPHERE A.VERCESI, G.NASINI and R.LOCCI Code Number: AC92003 Sizes of Files: Text: 19K Graphics: Line Drawings (gif) 22K ABSTRACT. Two-hundred and twenty actinomycete strains, isolated from grapevine berries, were tested for their antagonistic activity against 107 yeasts, associated with sour rot, and 10 mycelial fungi, all belonging to the same environment. Antibiosis appears widespread, more than half of the Actinomycetes showing activity against either the yeasts or the fungi and organisms grouped in the Streptomyces albidoflavus cluster being the most active. The antibiotics isolated inclu...