A new bacterial species is described, for which we propose the name Streptomyces acidiscabies. This organism causes a scab disease of potatoes (Solanum tuberosum) which may occur in soils with pH values below 5.2. The acid scab symptoms caused by this organism are indistinguishable from the symptoms of commn scab caused by Streptomyces scabies. In culture, S. acidiscabies is distinct from S. scabies, having flexuous spore chains, a growth medium-dependent spore mass color ranging from white to organish red, and a red or yellow, pH-sensitive diffusible pigment rather than melanin. S. acidiscabies grows on agar media at pH 4.0 (versus pH 5.0 for S. scabies), does not use raffinose as a carbon source, and tolerates higher concentrations of crystal violet (0.5 μg/ml), thallium acetate (10 μg/ml), streptomycin (20 μg/ml), oleandomycin (25 μg/ml), and penicillin G (10 IU/ml) than S. scabies. The type strain of S. acidiscabies is strain RL-110 (= ATCC 49003).
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Copyright 1989, International Association of Microbiological Societies
BeckerB.,
LechevalierM. P.,
GordonR. E.,
LechevalierH. A.1964; Rapid differentiation between Nocardia and Streptomyces by paper chromotography of whole-cell hydrolysates. Appl. Microbiol. 12:421–423
HughesC.,
McCrumR. C.,
ManzerF. E.1971; Protein and esterase electrophoretic patterns of Streptomyces spp. isolated from Maine potatoes. Am. Potato J. 48:206–213
KüsterE.1972; Simple working key for the classification and identification of named taxa included in the International Streptomyces Project. Int. J. Syst. Bacteriol. 22:139–148
LoriaR.,
KempterB. A.1986; Relative resistance of potato tubers produced from stem cuttings and seed-piece-propagated plants to Streptomyces scabies. Plant Dis. 70:1146–1148
PridhamT. G.,
GottliebD.1948; The utilization of carbon compounds by some Actinomycetales as an aid for species determination. J. Bacteriol. 56:107–114
ShirlingE. B.,
GottliebD.1968; Cooperative description of type cultures of Streptomyces. II. Species descriptions from first study. Int. J. Syst. Bacteriol. 18:69–189
ShirlingE. B.,
GottliebD.1968; Cooperative description of type cultures of Streptomyces. III. Additional species descriptions from first and second studies. Int. J. Syst. Bacteriol. 18:279–391
ShirlingE. B.,
GottliebD.1969; Cooperative description of type cultures of Streptomyces. IV. Species descriptions from the second, third, and fourth studies. Int. J. Syst. Bacteriol. 19:391–512
ShirlingE. B.,
GottliebD.1972; Cooperative description of type strains of Streptomyces. V. Additional descriptions. Int. J. Syst. Bacteriol. 22:265–394
SzaboI. M.,
MartonM.,
ButiI.,
FernandezC.1975; A diagnostic key for the identification of "species" of Streptomyces and Streptoverticillium included in the International Streptomyces Project. Acta Bot. Acad. Sci. Hung. 21:387–418
WilliamsS. T.,
DaviesF. L.,
MayfieldC. I.,
KhanM. R.1971; Studies on the ecology of actinomycetes in soil. II. The pH requirements of streptomycetes from two acid soils. Soil Biol. Biochem. 3:187–195
WilliamsS. T.,
GoodfellowM.,
AldersonG.,
WellingtonE. M. H.,
SneathP. H. A.,
SackinM. J.1983; Numerical classification of Streptomyces and related genera. J. Gen. Microbiol. 129:1743–1813