. The actinomycetes. Actinomycetales. DESCRIPTION OF SPECIES OF STREPTOMYCES 277 > gas from adonito dextrin, dextros' se, maltose, maim imnose, salich Prodi am ?t al. Cellulose: No growth. Carbon utilization: Xi arabinose, cellobiose, galactose, lactose, levulose, sucrose, or xylose. Antagonistic properties: biotic novobiocin. Habitat: Soil. Remarks: According to (1958), this organism is related if not identi- cal to S. griseoflavus. 228. Streptomyces spiralis (Millard and Burr, 1926) Waksman (Millard, W. A. and Burr, S. Ann. Appl. Biol. 13: 580, L926). Morphology: Sporophores straight or s
. The actinomycetes. Actinomycetales. DESCRIPTION OF SPECIES OF STREPTOMYCES 277 > gas from adonito dextrin, dextros' se, maltose, maim imnose, salich Prodi am ?t al. Cellulose: No growth. Carbon utilization: Xi arabinose, cellobiose, galactose, lactose, levulose, sucrose, or xylose. Antagonistic properties: biotic novobiocin. Habitat: Soil. Remarks: According to (1958), this organism is related if not identi- cal to S. griseoflavus. 228. Streptomyces spiralis (Millard and Burr, 1926) Waksman (Millard, W. A. and Burr, S. Ann. Appl. Biol. 13: 580, L926). Morphology: Sporophores straight or spiral-shaped. Spores cylindrical, to by m (Fig. 46). Sucrose nitrate agar: Growth rough or granular, yellowish-golden. Aerial mycelium vinaceous-buff to dark grayish-olive. Soluble pigment pale vinaceous to fawn-colored. Potato: Growth poor, wrinkled, grayish- vinaceous. Aerial mycelium white to grayish- vinaceous. Plug colored brown around and below growth. Gelatin: Growth limited, gray. Aerial my- celium scant, white. Liquefaction rapid. Melanin-negative. Milk: Surface growth good. Aerial myce- lium abundant, white. Coagulation and rapid peptonization. Starch: No hydrolysis. Nitrate reduction: None. Tyrosinase reaction: Negative. Habitat: Potato scab. Remarks: Krassilnikov (1949) considered this organism as belonging to the A. scabies group. 229. Streptomyces spiroverticillatus Shin- obu, 1958 (Shinobu, R. Botan. Mag. Tokyo 71:87-93, L958). Morphology: Verticil formation usually occurs near base of aerial mycelium, but generally not so remarkable as in the other. Figure 46. Sporophores of S. spiralis, showing that not all arc transformed into spun-, x 8,000 (Courtesy of E. Baldacci, University of Milan. Italy). verticil-forming species. Occasionally, very few tufts on the skirt of the colony. Nitella type verticils, generally primary only, seldom secondary. About 2 to 4 short radial branches. On synthetic media, many spirals in form of curled tips with 1 to2 turns
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