Amazonocrinis nigriterrae gen. nov., sp. nov., Atlanticothrix silvestris gen. nov., sp. nov. and Dendronalium phyllosphericum gen. nov., sp. nov., nostocacean cyanobacteria from Brazilian environments

Author(s)

Alvarenga, Danillo Oliveira ^{[1, 2]} ; Dini Andreote, Ana Paula ^[1] ; Zanini Branco, Luis Henrique ^[3] ; Delbaje, Endrews ^[1] ; Cruz, Renata Beatriz ^[1] ; Varani, Alessandro de Mello ^[4] ; Fiore, Marli Fatima ^[1]

Affiliation

^[1] Univ Sao Paulo, Ctr Nucl Energy Agr, BR-13416000 Piracicaba, SP - Brazil

^[2] Univ Copenhagen UCPH, Dept Biol, DK-2100 Copenhagen - Denmark

^[3] Sao Paulo State Univ, Inst Biosci Humanities & Exact Sci, UNESP, BR-15054000 Sao Jose Do Rio Preto, SP - Brazil

^[4] Sao Paulo State Univ, Sch Agr & Vet Sci, UNESP, BR-14884900 Jaboticabal, SP - Brazil

• Document type: Journal article
• Source: INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY; v. 71, n. 5 2021.
• Web of Science Citations: 0

Abstract

The cyanobacterial genus Nostoc is an important contributor to carbon and nitrogen bioavailability in terrestrial ecosystems and a frequent partner in symbiotic relationships with non- diazotrophic organisms. However, since this currently is a polyphyletic genus, the diversity of Nostoc- like cyanobacteria is considerably underestimated at this moment. While reviewing the phylogenetic placement of previously isolated Nostoc- like cyanobacteria originating from Brazilian Amazon, Caatinga and Atlantic forest samples, we detected 17 strains isolated from soil, freshwater, rock and tree surfaces presenting patterns that diverged significantly from related strains when ecological, morphological, molecular and genomic traits were also considered. These observations led to the identification of the evaluated strains as representative of three novel nostocacean genera and species: Amazonocrinis nigriterrae gen. nov., sp. nov.; Atlanticothrix silvestris gen. nov., sp. nov.; and Dendronalium phyllosphericum gen. nov., sp. nov., which are herein described according to the rules of the International Code of Nomenclature for algae, fungi and plants. This finding highlights the great importance of tropical and equatorial South American ecosystems for harbouring an unknown microbial diversity in the face of the anthropogenic threats with which they increasingly struggle. (AU)

• FAPESP's process: 13/50425-8 - Biodiversity of cyanobacteria and their bioactive compounds from under-explored Brazilian habitats
• Grantee: Marli de Fátima Fiore
• Support Opportunities: Regular Research Grants
• FAPESP's process: 09/15402-1 - Cyanobacteria of the Atlantic Forest phyllosphere: isolation, taxonomy and bioprospecting
• Grantee: Ana Paula Dini Andreote
• Support Opportunities: Scholarships in Brazil - Doctorate
• FAPESP's process: 11/08092-6 - Genome sequencing of the cyanobacterium Nostoc sp. CENA67 and anotation of secondary metabolism genes
• Grantee: Danillo Oliveira de Alvarenga
• Support Opportunities: Scholarships in Brazil - Doctorate