Any process that stops, prevents or reduces the frequency, rate or extent of filamentous growth of a population of unicellular organisms in response to biotic stimulus.
synonyms:
down regulation of filamentous growth of a population of unicellular organisms in response to biotic stimulus,
down-regulation of filamentous growth of a population of unicellular organisms in response to biotic stimulus,
downregulation of filamentous growth of a population of unicellular organisms in response to biotic stimulus,
inhibition of filamentous growth of a population of unicellular organisms in response to biotic stimulus