{"response":{"status":"ok","message_type":"publication"},"id":3825,"citation":"Katayama et al., 2024, International Journal of Systematic and Evolutionary Microbiology","doi":"10.1099/ijsem.0.006558","url":"https://api.seqco.de/v1/publications/3825.json","link_ext":"https://doi.org/10.1099/ijsem.0.006558","title":"Fidelibacter multiformis gen. nov., sp. nov., isolated from a deep subsurface aquifer and proposal of Fidelibacterota phyl. nov., formerly called Marine Group A, SAR406 or Candidatus Marinimicrobia","journal":"International Journal of Systematic and Evolutionary Microbiology","journal_loc":"74 (10)","journal_date":"2024-10-25","pub_type":"journal-article","abstract":"\u003cjats:p\u003eA Gram-negative, obligatory anaerobic, chemoheterotrophic bacterium, designated strain IA91\u003cjats:sup\u003eT\u003c/jats:sup\u003e, was isolated from sediments and formation water from deep aquifers in Japan. IA91\u003cjats:sup\u003eT\u003c/jats:sup\u003e derives its peptidoglycan, energy and carbon from exogenous cell wall fragments, namely muropeptides, released from actively reproducing bacteria, and is dependent on other bacteria for cell wall formation, growth and even cell shape: IA91\u003cjats:sup\u003eT\u003c/jats:sup\u003e is irregular rod-shaped but coccoids when muropeptide is absent. IA91\u003cjats:sup\u003eT\u003c/jats:sup\u003e grew in a temperature range of 25–45 °C with optimum growth at 40 °C. IA91\u003cjats:sup\u003eT\u003c/jats:sup\u003e utilized limited substrates, yeast extract, muropeptides and \u003cjats:sc\u003ed\u003c/jats:sc\u003e-lactate. The major end products from yeast extract degradation were acetate, hydrogen and carbon dioxide. Co-cultivation with a hydrogen-scavenging methanogenic archaeon promoted IA91\u003cjats:sup\u003eT\u003c/jats:sup\u003e growth. No anaerobic respiration with nitrate, nitrite, sulphate or Fe(III) was observed. The major cellular fatty acids are C16 : 0, C18 : 1 \u003cjats:italic\u003etrans\u003c/jats:italic\u003e9, C18 : 0 and C17 : 0. The G+C content of the genomic DNA was 45.6 mol%. Phylogenetic analysis based on 16S rRNA gene and conserved protein sequences involved in replication, transcription and translation indicated that IA91\u003cjats:sup\u003eT\u003c/jats:sup\u003e belonged to the candidate phylum Marine Group A (MG-A, SAR406 or \u003cjats:italic\u003eCa\u003c/jats:italic\u003e. Marinimicrobia) with no cultivated representatives. Based on the phenotypic and phylogenomic characteristics, a new genus and species, \u003cjats:italic\u003eFidelibacter multiformis\u003c/jats:italic\u003e gen. nov., sp. nov., is proposed for IA91\u003cjats:sup\u003eT\u003c/jats:sup\u003e (= JCM 39387\u003cjats:sup\u003eT\u003c/jats:sup\u003e = KCTC 25736\u003cjats:sup\u003eT\u003c/jats:sup\u003e). In addition, a new bacterial phylum named \u003cjats:italic\u003eFidelibacterota\u003c/jats:italic\u003e phyl. nov. is proposed for the candidate phylum MG-A represented by \u003cjats:italic\u003eF. multiformis\u003c/jats:italic\u003e and \u003cjats:italic\u003eFidelibacteraceae\u003c/jats:italic\u003e fam. nov., \u003cjats:italic\u003eFidelibacterales\u003c/jats:italic\u003e ord. nov. and \u003cjats:italic\u003eFidelibacteria\u003c/jats:italic\u003e classis nov.\u003c/jats:p\u003e","long_citation_html":"Katayama et al. (2024). Fidelibacter multiformis gen. nov., sp. nov., isolated from a deep subsurface aquifer and proposal of Fidelibacterota phyl. nov., formerly called Marine Group A, SAR406 or Candidatus Marinimicrobia. \n\u003ci\u003eInternational Journal of Systematic and Evolutionary Microbiology\u003c/i\u003e. \u003ca href=\"https://doi.org/10.1099/ijsem.0.006558\" target=\"_blank\"\u003eDOI:10.1099/ijsem.0.006558\u003c/a\u003e\n","created_at":"2024-10-29T23:00:22.304Z","updated_at":"2025-11-06T11:20:56.737Z","authors":[{"id":14197,"given":"Taiki","family":"Katayama","created_at":"2024-06-06T17:58:06.822Z","updated_at":"2024-06-06T17:58:06.822Z","url":"https://api.seqco.de/v1/authors/14197.json"},{"id":1859,"given":"Masaru K.","family":"Nobu","created_at":"2019-04-15T18:46:56.916Z","updated_at":"2019-04-15T18:46:56.916Z","url":"https://api.seqco.de/v1/authors/1859.json"},{"id":9349,"given":"Yoichi","family":"Kamagata","created_at":"2021-12-15T16:46:17.287Z","updated_at":"2021-12-15T16:46:17.287Z","url":"https://api.seqco.de/v1/authors/9349.json"},{"id":100,"given":"Hideyuki","family":"Tamaki","created_at":"2019-04-15T18:45:43.084Z","updated_at":"2019-04-15T18:45:43.084Z","url":"https://api.seqco.de/v1/authors/100.json"}],"names":[{"id":44211,"name":"Neomarinimicrobiota","url":"https://api.seqco.de/v1/names/44211.json","uri":"https://seqco.de/i:44211"},{"id":49640,"name":"Fidelibacteraceae","url":"https://api.seqco.de/v1/names/49640.json","uri":"https://seqco.de/i:49640"},{"id":49641,"name":"Fidelibacterales","url":"https://api.seqco.de/v1/names/49641.json","uri":"https://seqco.de/i:49641"},{"id":49642,"name":"Fidelibacteria","url":"https://api.seqco.de/v1/names/49642.json","uri":"https://seqco.de/i:49642"},{"id":49643,"name":"Fidelibacterota","url":"https://api.seqco.de/v1/names/49643.json","uri":"https://seqco.de/i:49643"}],"subjects":[]}