Autor(es): Zampieri, Bruna Del Busso [UNESP] ; da Costa Andrade, Vanessa [UNESP] ; Chinellato, Roberta Merguizo [UNESP] ; Garcia, Carlos Alexandre Borges ; de Oliveira, Marcos Antônio [UNESP] ; Brucha, Gunther ; de Oliveira, Ana Julia Fernandes Cardoso [UNESP]
Data: 2020
Identificador Persistente: http://hdl.handle.net/11449/200750
Origem: Oasisbr
Assunto(s): Bacteria community; Coastal areas; Contaminants; Metals; Microbial diversity
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
The objectives of this study were to analyze the difference in ways in which metals polluting Brazilian port areas influence bacterial communities and the selection of resistant strains. The hypothesis tested was that port areas would have microbial communities significantly different from a pristine area, mainly due to a greater load of metals found in these areas. Sediment samples were collected in two port areas (Santos and São Sebastião) and one pristine area (Ubatuba). Total DNA was extracted and MiSeq sequencing was performed. A hundred strains were isolated from the same samples and were tested for metal resistance. The community composition was similar in the two port regions, but differed from the pristine area. Microbial diversity was significantly lower in the port areas. The phyla Proteobacteria, Cyanobacteria, and Thermodesulfobacteria exhibited positive correlations with copper and zinc concentrations. Chloroflex, Nitrospirae, Planctomycetes, and Chlorobi exhibited negative correlations with copper, chromium, and zinc. Cr and Zn had higher concentrations at port areas and were responsible to select more metal-resistant strains. Some genera were found to be able to easily develop metal resistance. The most isolated genera were Bacillus, Vibrio, and Pseudomonas. This type of study can illustrate, even in very complex natural environments, the influence of pollution on the community as a whole and the consequences of these changes.
Department of Biochemistry and Microbiology School of Biology São Paulo State University – Rio Claro Campus (UNESP Rio Claro), Av. 24 A, 1515 - Jardim Vila Bela
School of Biosciences São Paulo State University – São Vicente Campus (UNESP São Vicente), Praça Infante Dom Henrique, s/n
Department of Chemistry Center for Exact Sciences and Technology Federal University of Sergipe – São Cristóvão Campus (UFS São Cristóvão), Cidade Universitária Prof. José Aloísio de Campos Rosa Elze
School of Technological Sciences Federal University of Alfenas (UNIFAL-MG), Rodovia Aurélio Vilela, n 11.999 Cidade Universitária
Department of Biochemistry and Microbiology School of Biology São Paulo State University – Rio Claro Campus (UNESP Rio Claro), Av. 24 A, 1515 - Jardim Vila Bela
School of Biosciences São Paulo State University – São Vicente Campus (UNESP São Vicente), Praça Infante Dom Henrique, s/n
FAPESP: 2015/21020-5
CAPES: 88882.434109/2019-01
