Comparative transcriptomics highlights genes associated with development and response to microorganisms

the symbiont may contribute to larval survival in unripe olives

is essential for successful larval development in unripe olive fruits

Antibiotic-treated larvae showed high mortality on unripe olive. The symbiont expressed genes involved in oleuropein-degradation in the gut

a number of genes encoding detoxification and digestive enzymes, indicating a potential association with the ability of B. oleae to cope with green olives. In addition, a number of biological processes seem to be activated in Ca. E. dacicola during the development of larvae in olives, with the most notable being the activation of amino-acid metabolism.

bacteria contribute essential amino acids and metabolize urea into an available nitrogen source for the fly, thus significantly elevating egg production