What does the published scientific research say about Pseudomonas aureofaciens?

Eight PubMed articles indexed here examine Pseudomonas aureofaciens in plant-input contexts, with the bulk of peer-reviewed research focused on strain 30-84 — a wheat rhizosphere colonizer studied as a biological control agent. Published studies report that strain 30-84 produces phenazine antibiotics that suppress take-all disease of wheat by inhibiting Gaeumannomyces graminis var. tritici, and that these same phenazines enhance the strain's own competitive survival in the rhizosphere.

The scientific literature documents two overlapping regulatory layers governing phenazine production in P. aureofaciens 30-84. N-hexanoyl-homoserine lactone (HHL), synthesized by the phzI gene, activates phenazine biosynthesis via quorum sensing and functions as an effective interpopulation signal in situ. The GacS/GacA two-component system provides a second control point; research on wheat roots shows gacS/gacA mutants arise in natural rhizosphere populations but do not displace wild-type strain 30-84, which maintains colonization advantage in non-sterile soil.

Additional indexed research covers pyrimidine biosynthesis regulation in P. aureofaciens ATCC 17418 — taxonomically assigned to the Pseudomonas chlororaphis homology group — cell-free transcription-translation system development using this species as a synthetic biology chassis, and engineered strains carrying plasmid-borne naphthalene degradation and arsenic resistance for bioremediation work.