Ornamental tobacco floral nectar is a rich source of antimicrobial peptides.

Although floral nectar is a rich source of nutrients, it is rarely infected by microorganisms. Defense molecules such as proteins have been identified in this fluid, but defense peptides have been largely overlooked. Thus, the aim of this study was to perform an extensive peptidomic analysis of the ornamental tobacco floral nectar to seek peptides involved in nectar defense.

Synergistic Antifungal Activity of Synthetic Peptides and Antifungal Drugs against and Biofilms.

and are biofilm-forming yeasts responsible for bloodstream infections that can cause death. Synthetic antimicrobial peptides (SAMPs) are considered to be new weapons to combat these infections, alone or combined with drugs. Here, two SAMPs, called -CBP-PepI and -CBP-PepIII, were tested alone or combined with nystatin (NYS) and itraconazole (ITR) against and biofilms.