Submitted to: Journal of Soil Biology and Biochemistry
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: March 6, 1996
Publication Date: N/A
Interpretive Summary: Colonization by bacterial biocontrol agents is a process thought to be important to biological control of soilborne plant pathogens. In this study, we analyzed the role of peptides leaked into soil from germinating seeds as nutrients for the bacterial biocontrol agent Enterobacter cloacae during colonization. We determined that peptides are not required as nutrients for colonization by E. cloacae. This information will be useful to scientists.
Spontaneous triornithine-resistant mutants of Enterobacter cloacae that lost the ability to grow on certain peptides were isolated to test the correlation between peptide utilization and proliferation in corn, radish, and wheat spermosphere. Triornithine-resistant mutants incapable of growth on the peptides tested proliferated as well as E. cloacae strains capable of growth on peptides indicating peptide utilization is not essential for growth in corn, radish, or wheat spermosphere.