Fig. 7: Schematic illustration of the interactions between A. chroococcum HN and P. aminovorans HPD-2 during pyrene degradation in a nitrogen-free environment. | The ISME Journal

Fig. 7: Schematic illustration of the interactions between A. chroococcum HN and P. aminovorans HPD-2 during pyrene degradation in a nitrogen-free environment.

From: Nitrogen transfer and cross-feeding between Azotobacter chroococcum and Paracoccus aminovorans promotes pyrene degradation

Fig. 7

A. chroococcum HN produces NH4+, amino acids and peptides through biological nitrogen fixation and provides nutrients to P. aminovorans HPD-2 through ammonium ion and amino acid transporters. Cross-feeding of downstream intermediates of pyrene, such as 2, 5-dihydroxybenzoic acid and phthalic acid, between P. aminovorans HPD-2 and A. chroococcum HN synergistically accelerated pyrene degradation.

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