Microbe-host signalling is now a well accepted concept and an intensively studied research
field. Although some of the observed bacterial phenotypes are atributed to host-recognition and interkingdom
signalling, most of them are not relying on a proved molecular mechanism. Recent progress
revealed some recognition and signalling pathways for host molecules in bacterial cells, which try to
explain their modulatory effect on growth and virulence. Since the current knowledge on the field is poor and debatable,
the purpose of this paper is to review and discuss the research performed in order to elucidate the ways by which
microbial cells recognize and decode the host molecule signals.
Keywords: Inter-kingdom signalling, stress hormones, catecholamines, pathogens, virulence, growth.
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