. The actinomycetes. Actinomycetales. hi SCRIPTION OF SPECIES OF STREPTOMYCES 201. Figure 37. Sporophores of S. tliastalicus, X 4,500, showing tesy of E. Baldacci. University of Milan, Italy). whole surface i < low spreading. Aerial mycelium gray. Ready hy- drolysis. Cellulose: Good growth. [nvertase: Negative. Nitrate reduction: Weak. Production of 11 jS: Negative. Temperature: Optimum 37°C. Antagonistic properties: Limited. Habitat : Soil. Remarks: This species was redescrihed by Duche (L934) under the name .1. roseodiasta- tlCUS. Baldacci et al. (1955) raised this spe- cies to the status
. The actinomycetes. Actinomycetales. hi SCRIPTION OF SPECIES OF STREPTOMYCES 201. Figure 37. Sporophores of S. tliastalicus, X 4,500, showing tesy of E. Baldacci. University of Milan, Italy). whole surface i < low spreading. Aerial mycelium gray. Ready hy- drolysis. Cellulose: Good growth. [nvertase: Negative. Nitrate reduction: Weak. Production of 11 jS: Negative. Temperature: Optimum 37°C. Antagonistic properties: Limited. Habitat : Soil. Remarks: This species was redescrihed by Duche (L934) under the name .1. roseodiasta- tlCUS. Baldacci et al. (1955) raised this spe- cies to the status of a "; Several new species or varieties were created: A. virido- diastaticus, A. diastaticus var. ardesicicus, A. diastaticus var. venezuelae, A. rubrocyano- diastaticus var. impiger and var. piger. Type culture: [MRU 3315. 66. Streptomyces diastatochromogi nes (Krainsky, 1!I14; Waksman and Curtis, L916) Waksman and Henrici, L948 (Krain- sky, A. Centr. Bakteriol. Parasitenk. Abt. II., 41: 683, L914). Morphology: According to Waksman and Curtis (1916), sporophores are straight. Ac- cording to .Jensen (1930), sinistrorse spirals are produced. Spores spherical or oval, m- Sucrose nitrate agar: Growth colorless. later yellowish-brown. Aerial mycelium abundant, white, later ash-gray. Soluble pigment yellowish to light brown. Sucrose malate agar: According to Krain- sky, growth colorless, with gray aerial myce- lium. When glucose is added, center of aerial mycelium is colored yellowish, with gray margin. GllK •ose-asparagiue agai dor- less, with gray aerial mycelium. Nutrient agar: Aerial mycelium white to gray. Soluble pigment brownish to coffee- brown. Melanin-positive. Potato: Growth light gray, later grayish- black. Aerial mycelium white to gray. Solu- ble pigment black. Gelatin: Growth cream-colored to yellow- ish-brown. Aerial mycelium -cant white. Sol-. Please note that these images are extracted from scanned page images that may have been digitally e
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