Monilinema gen. nov., a homocytous genus (Cyanobacteria, Leptolyngbyaceae) from saline-alkaline lakes of Pantanal wetlands, Brazil(1)

Autor(es)

da Silva Malone, Camila Francieli ^[1] ; Genuario, Diego Bonaldo ^{[2, 3]} ; Marcal Vieira Vaz, Marcelo Gomes ^[4] ; Fiore, Marli Fatima ^[5] ; Sant'Anna, Celia Leite ^[1]

Afiliação do(s) autor(es)

^[1] Inst Bot, Nucleus Phycol, Sao Paulo, SP - Brazil

^[2] Embrapa Environm, Lab Environm Microbiol, BR-13820000 Jaguariuna, SP - Brazil

^[3] Biodiversita Microbial Technol, BR-13087010 Campinas, SP - Brazil

^[4] Univ Vicosa, Dept Plant Biol, Lab Phycol & Mol Biol, BR-36570900 Vicosa, MG - Brazil

^[5] Univ Sao Paulo, Ctr Nucl Energy Agr, Ave Centenario 303, BR-13400970 Piracicaba, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF PHYCOLOGY; v. 57, n. 2 DEC 2020.
• Citações Web of Science: 0

Resumo

Cyanobacteria morphotypes with simple morphology, mainly thin filamentous homocytous strains, comprise a taxonomically complex group and represent a challenge in systematic studies. However, the polyphasic approach applied nowadays to investigate the cyanobacterial diversity has emerged as a powerful tool to undercover cryptic taxa and to set up a more natural classification system. Yet, studies exploring the cultured diversity of cyanobacteria from extreme tropical environments have paved the way to the discovery of new cyanobacteria taxa, enabling the description of Pantanalinema, Alkalinema, and Cephalothrix as novel genera from saline-alkaline lakes in Pantanal wetlands (Brazil). The present study investigated a set of cyanobacterial strains resembling Leptolyngbya morphotypes by means of its morphology, 16S ribosomal RNA (16S rRNA) phylogeny, and ITS secondary structures. Based on the shape and structure of their trichomes, the low levels of 16S rRNA identity coupled with the distinct phylogenetic position with regard to well establish genera, and their divergent ecological feature, these strains must be accommodated into a novel genus, named as Monilinema gen. nov., described under the provisions of the International Code of Nomenclature for algae, fungi, and plants. Accordingly, based on the singularity of the D1-D1 ` and V3 helixes, these strains should be considered as a single species, Monilinema alkalinum. (AU)

• Processo FAPESP: 10/18732-0 - Produtos naturais bioativos de cianobactérias marinhas
• Beneficiário: Marcelo Gomes Marçal Vieira Vaz
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 10/00321-3 - Diversidade e atividade funcional de cianobactérias do Arquipélago Shetlands do Sul, Continente Antártico
• Beneficiário: Diego Bonaldo Genuário
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 10/51666-0 - Diversidade fenotipica, molecular e avaliacao do potencial biotecnologico do genero phormidium (cyanobacteria) em ambientes aquaticos e aerofiticos da mata atlantica e pantanal, brasil
• Beneficiário: Camila Francieli da Silva Malone
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 12/18528-9 - Análises filogenéticas de linhagens do complexo Phormidium (Cyanobactéria) provenientes da Mata Atlântica e Pantanal, Brasil
• Beneficiário: Camila Francieli da Silva Malone
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Doutorado
• Processo FAPESP: 14/26131-7 - Análise do microbioma do Rio Amazonas e seus afluentes: biogeografia e sua contribuição na fixação do N2
• Beneficiário: Diego Bonaldo Genuário
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado