Stock cultures were maintained on a gelified medium whose composition was (kg m3): glucose, 20; peptone, 10; yeast extract, 10; and agar, 10. In all cases, cultures were maintained at 28 C for 24 h and then stored at 4 C.
Stock cultures were maintained on a gelifiedmedium whose composition was (kg m3): glucose, 20;peptone, 10; yeast extract, 10; and agar, 10. In all cases, cultureswere maintained at 28 C for 24 h and then stored at 4 C.