Characteristics of motile strains of Streptococcus faecalis pathogenic to larvae of the gypsy moth

Symbiont-Derived Antimicrobials Contribute to the Control of the Lepidopteran Gut Microbiota

“…A major virulence gene, gelE, which encodes a lethal protein to lepidopterans (Gaspar et al, 2009), was detected in E. faecalis isolates, but not in E. mundtii SL (Table 1). Infection assays of cured (E. mundtii-free) larvae with E. faecalis SL and E. casseliflavus SL resulted in similar disease symptoms (Figure 1C) and high mortality (Table 1) as described in other lepidopterans (Doane and Redys, 1970). Accumulative mortality until adult stage, ANOVA analysis showed significant differences.…”

“…It is known that E. faecalis poorly supported larval development in the housefly (Ghosh et al, 2014). Certain strains of E. faecalis have also been shown to cause lethal infection in Lepidoptera (Doane and Redys, 1970). Since enterococci strains carrying diverse virulence factors have emerged in many habitats and are isolated with alarming regularity (Palmer et al, 2012), these possible pathogens that are often orally acquired by S. littoralis nymphs from their diet (first contaminated eggshell, then plants) and the surrounding environment, represent a critical challenge to the host.…”

Differentiation of Some Enterococci by Gas Chromatography

“…Some investigators (9,12,13) still believe that enterococci have potential as pollution indicators in certain foods. The use of enterococci for this purpose, however, has been complicated by the discovery (20) of enterococci on "undisturbed" plants and subsequent reports (6,(15)(16)(17)(18)(19) of possible enterococcal plant floras.…”

Microorganisms associated with production lots of the nucleopolyhedrosis virus of the gypsy moth,Lymantria dispar [Lep.: Lymantriidae]

“…This bacterium is a gypsy moth pathogen (Doane & Redys, 1970, Podgwaite & Campbell, 1972 and its association with the product was not unexpected. Though S. faecalis is a fecal microorganism, the absence of associated coliform bacteria pointed to a nonfecal source of contamination.…”