An AEC resistant mutant,Kitasatospora sp.MY5-36,was derived from Kitasatospora sp.PL6-3 by DES treatment.

• 以北里孢菌(Kitasatospora sp.；) PL6-3为出发菌株；经硫酸二乙酯诱变；获得遗传性能稳定的AECr突变株MY5-36。