collectively these results indicate that ( i ) extracellular-dna production by genetically altered bacteria released into aquatic environments is more strongly influenced by physiochemical factors than biotic factors , ( ii ) extracellular-dna production rates are usually greater for organisms released in freshwater than marine environments , and ( iii ) ambient microbial populations can readily utilize materials released by these organisms .
C0012924
dna
C0012854
dna