Rr. King et al., ISOLATION AND IDENTIFICATION OF PIGMENTS GENERATED IN-VITRO BY STREPTOMYCES ACIDISCABIES, Journal of agricultural and food chemistry, 44(9), 1996, pp. 2849-2851
Examination of the nonphytotoxic exudates associated with the in vitro
production of thaxtomin A by Streptomyces acidiscabies yielded three
pigments. The pigments were identified by chromatographic and spectral
means as unusual naphthoquinone derivatives.