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TL;DR
Researchers isolated lactic acid bacteria from the gut of the bean bug pest and found they survived acidic conditions and colonized the insect gut.
PLOS ONE · 9 authors, 4 centres
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Researchers isolated lactic acid bacteria from the gut of the bean bug pest and found they survived acidic conditions and colonized the insect gut.
The study isolated and identified two Lactococcus lactis and one Enterococcus faecalis strains from the gut of the bean bug Riptortus pedestris. The isolates were characterized for probiotic traits, showing survival in simulated human gastric juice at pH 2.2 and 2.5, and in 0.5% bile salts. When fed to second-instar nymphs, all three strains colonized the adult insect gut at densities > 10^5 CFU/gut. Feeding these LAB strains increased the survival rate of the insects compared to a negative control, with L. lactis B103 showing the largest increase, but did not affect adult weight or length.