2.1.1.B75 Populus sp. 2.1.1.B75 Streptomyces avermitilis 2.1.1.B75 Streptomyces avermitilis DSM 46492 2.1.1.B75 Streptomyces avermitilis MA-4680 2.1.1.B75 Streptomyces peucetius subsp. caesius 2.1.1.B75 Streptomyces peucetius subsp. caesius ATCC 27952