Extending the ecological distribution of Desmonostoc genus: proposal of Desmonostoc salinum sp nov., a novel Cyanobacteria from a saline-alkaline lake

Author(s):Show less -

de Advarenga, Luna Viggiano ^{[1, 2]} ; Marcal Vieira Vaz, Marcelo Gomes ^{[1, 2]} ; Genuario, Diego Bonaclo ^[3] ; Esteves-Ferreira, Alberto A. ^{[1, 2]} ; Martins Almeida, V, Allan ; de Castro, Naira Valle ^{[4, 5]} ; Lizieri, Claudineia ^{[4, 6]} ; Souza, Jose Joao L. L. ^{[7, 8]} ; Schaefer, Carlos Ernesto G. R. ^[7] ; Nunes-Nesi, Adriano ^{[4, 5]} ; Araujo, Wagner L. ^{[4, 5]}

Affiliation

^[1] Univ Fed Vicosa, Dept Biol Vegetal, BR-36570900 Vicosa, MG - Brazil

^[2] Univ Fed Vicosa, Max Planck Partner Grp, Dept Biol Vegetal, BR-36570900 Vicosa, MG - Brazil

^[3] EMBRAPA Meio Ambiente, Lab Microbiol Ambiental, BR-13820000 Jaguariuna, SP - Brazil

^[4] Martins Almeida, Allan, V, Univ Fed Vicosa, Dept Biol Vegetal, BR-36570900 Vicosa, MG - Brazil

^[5] Martins Almeida, Allan, V, Univ Fed Vicosa, Max Planck Partner Grp, Dept Biol Vegetal, BR-36570900 Vicosa, MG - Brazil

^[6] Ctr Univ Belo Horizonte, Inst Engn & Tecnol, UniBH, BR-30455610 Belo Horizonte, MG - Brazil

^[7] Univ Fed Vicosa, Dept Solos, BR-36570900 Vicosa, MG - Brazil

^[8] Univ Fed Rio Grande do Norte, Dept Geog, BR-59300000 Caico, RN - Brazil

• Document type: Journal article
• Source: INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY; v. 68, n. 9, p. 2770-2782, SEP 2018.
• Web of Science Citations: 3

Abstract

Cyanobacteria is an ancient phylum of oxygenic photosynthetic microorganisms found in almost all environments of Earth. In recent years, the taxonomic placement of some cyanobacterial strains, including those belonging to the genus Nostoc sensu lato, have been reevaluated by means of a polyphasic approach. Thus, 16S rRNA gene phylogeny and 16S-23S internal transcribed spacer (ITS) secondary structures coupled with morphological, ecological and physiological data are considered powerful tools for a better taxonomic and systematics resolution, leading to the description of novel genera and species. Additionally, underexplored and harsh environments, such as saline-alkaline lakes, have received special attention given they can be a source of novel cyanobacterial taxa. Here, a filamentous heterocytous strain, Nostocaceae CCM-UFV059, isolated from Laguna Amarga, Chile, was characterized applying the polyphasic approach; its fatty acid profile and physiological responses to salt (NaCl) were also determined. Morphologically, this strain was related to morphotypes of the Nostoc sensu lato group, being phylogenetically placed into the typical cluster of the genus Desmonostoc. CCM-UFV059 showed identity of the 16S rRNA gene as well as 16S-23S secondary structures that did not match those from known described species of the genus Desmonostoc, as well as distinct ecological and physiological traits. Taken together, these data allowed the description of the first strain of a member of the genus Desmonostoc from a saline-alkaline lake, named Desmonostoc salinum sp. nov., under the provisions of the International Code of Nomenclature for algae, fungi and plants. This finding extends the ecological coverage of the genus Desmonostoc, contributing to a better understanding of cyanobacterial diversity and systematics. (AU)

• FAPESP's process: 14/26131-7 - Microbiome of Amazon River and its tributaries: biogeography and contribution to N2 cycle
• Grantee: Diego Bonaldo Genuário
• Support Opportunities: Scholarships in Brazil - Post-Doctoral