Labeda D P, Lechevalier M P, Testa R T
National Center for Agricultural Utilization Research, U.S. Department of Agriculture, Peoria, Illinois 61604, USA.
Int J Syst Bacteriol. 1997 Jul;47(3):747-53. doi: 10.1099/00207713-47-3-747.
Strain NRRL 12292T, which produces the bleomycin-like antibiotics LL-BO1208 alpha and LL-BO1208 beta, forms umbels consisting of chains of smooth-surface ovoid spores that are borne on verticils on the serial mycelia, indicating that it is a member of the verticillate group of the genus Streptomyces formerly classified in the genus Streptoverticillium. This strain was compared morphologically and physiologically to 54 other verticillate Streptomyces strains. The levels of DNA relatedness between strain NRRL 12292T and 34 other verticillate Streptomyces strains, including strains representing at least 19 genetic species clusters, were also determined. Strain NRRL 12292T is morphologically and physiologically distinct from the other verticillate strains studied, particularly because of the straw yellow color of its aerial mycelia and spore mass. DNA hybridization data support the uniqueness of this strain, since the levels of DNA relatedness between NRRL 12292T and the other verticillate strains used in this study were low. Our data support designation of a new species, Streptomyces stramineus, whose type strain is NRRL 12292.
菌株NRRL 12292T可产生博来霉素样抗生素LL - BO1208α和LL - BO1208β，形成由表面光滑的卵形孢子链组成的伞形花序，这些孢子生于连续菌丝体的轮生体上，表明它是以前分类在轮状链霉菌属中的链霉菌属轮生组的成员。将该菌株与其他54株轮生链霉菌菌株进行了形态和生理比较。还测定了菌株NRRL 12292T与其他34株轮生链霉菌菌株之间的DNA相关性水平，其中包括代表至少19个遗传物种簇的菌株。菌株NRRL 12292T在形态和生理上与所研究的其他轮生菌株不同，特别是因其气生菌丝体和孢子团呈稻草黄色。DNA杂交数据支持了该菌株的独特性，因为NRRL 12292T与本研究中使用的其他轮生菌株之间的DNA相关性水平较低。我们的数据支持命名一个新物种，即稻草色链霉菌，其模式菌株为NRRL 12292。
