Abstract
The ability of bacteriophage SH-133 to replicate in heterotrophically (H-) and autotrophically (A-) grown Hydrogenomonas facilis was examined. Both the synthesis of infectious phage particles and the efficiency of plating (EOP) were reduced by 90% in A-grown cells. Adsorption of phage and lethal effects on H. facilis were identical in both systems. One-step growth experiments showed that cell lysis preceded the appearance of infectious particles in A-grown cells. Burst size studies with mixotrophically grown cells did not indicate the presence of an inhibitor of phage synthesis indigenous to autotrophic metabolism. DNA synthesis was identical in H- and A-grown infected cells; however, protein synthesis was significantly reduced in A-grown infected cells when compared with protein synthesis in H-grown infected cells. The data suggest that the reduction in EOP and phage synthesis in A-grown cells is caused by a defect in viral protein synthesis which results in the limited production of an essential viral protein at the time of cell lysis.
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