title: Symbiotic relationship of thiothrix spp. with An echinoderm
abstract: Immunoassay procedures were used to investigate the symbiotic relationship of Thiothrix spp. in the intestinal cecum of the spatangoid species Echinocardium cordatum. Thiothrix spp. were identified in nodule samples from E. cordatum digestive tubes based on microscopic examination, enzyme-linked immunosorbent assay, and indirect immunofluorescence. Thiothrix spp. protein made up as much as 84% of the total protein content of the nodules. This is the first identification of Thiothrix spp. internally symbiotic with marine invertebrates.
authors.affiliation: Environmental Biotechnology Section, Savannah River Technology Center, Westinghouse Savannah River Company, Aiken, South Carolina 29808, USA.
authors.initials: RL
authors.lastname: Brigmon
authors.lastname: De Ridder C