Co-occuring nitrifying symbionts of marine sponges

nitrite-oxidizing bacteria associated with marine sponges; they gain energy for CO2 fixation via the oxidation of nitrite to nitrate;
belonging to the lineage IVb Nitrospirales (previously referred to as “bin75”); members of this genus are predominantly associated with marine sponges (i.e., Aplysina aerophoba, Coscinoderma matthewsi, Ircinia ramosa, Ircinia sp., and Stylissa flabelliformis). 

An ammonia-oxidizing, nitrite-producing archaeon associated with keratose sponges. Phylogenetically affiliated with the order Nitrosopumilales, phylum Thermoproteota (syn. Crenarchaeota). The metagenome-assembled genome (MAG) is 97.57% complete and has 0.00% contamination. It consists of 162 scaffolds, with a total of 1 505 883 bp. The DNA G + C content is 45.56%. Nitrosokoinonia keratosae was recovered from the tissue of two closely related marine sponge species (I. ramosa and C. matthewsi), collected at Great Barrier Reef in Queensland (Australia).

Phylogenetically affiliated with the order Nitrospirales, phylum Nitrospirota. The MAG is 98.64% complete and has 3.86% contamination. It consists of 38 scaffolds, with a total of 2 506 777 bp. The DNA G + C content is 56.70%. Nitrosymbium coscinodermae was recovered from the tissue of the marine sponge Coscinoderma matthewsi, collected at the in-shore coral reef location Falcon Island (Great Barrier Reef, Queensland, Australia).