| Texto completo | |
| Autor(es): |
Bendia, Amanda G.
[1]
;
Callefo, Flavia
[2]
;
Araujo, Maicon N.
[3]
;
Sanchez, Evelyn
[4]
;
Teixeira, Veronica C.
[2]
;
Vasconcelos, Alessandra
[4]
;
Battilani, Gislaine
[4]
;
Pellizari, Vivian H.
[1]
;
Rodrigues, Fabio
[3]
;
Galante, Douglas
[2]
Número total de Autores: 10
|
| Afiliação do(s) autor(es): | [1] Univ Sao Paulo, Oceanog Inst, Biol Oceanog Dept, Praca Oceanog 191, BR-05508120 Sao Paulo - Brazil
[2] Brazilian Ctr Res Energy & Mat, Brazilian Synchrotron Light Lab, Campinas - Brazil
[3] Univ Sao Paulo, Fundamental Chem Dept, Inst Chem, Sao Paulo - Brazil
[4] Fed Univ Jequitinhonha & Mucuri, Inst Sci & Technol, Diamantina - Brazil
Número total de Afiliações: 4
|
| Tipo de documento: | Artigo Científico |
| Fonte: | ASTROBIOLOGY; OCT 2021. |
| Citações Web of Science: | 0 |
| Resumo | |
Microbial communities have been explored in various terrestrial subsurface ecosystems, showing metabolic potentials that could generate noteworthy morphological and molecular biosignatures. Recent advancements in bioinformatic tools have allowed for descriptions of novel and yet-to-be cultivated microbial lineages in different ecosystems due to the genome reconstruction approach from metagenomic data. Using shotgun metagenomic data, we obtained metagenome-assembled genomes related to cultivated and yet-to-be cultivated prokaryotic lineages from a silica and iron-rich cave (Monte Cristo) in Minas Gerais State, Brazil. The Monte Cristo Cave has been shown to possess a high diversity of genes involved with different biogeochemical cycles, including reductive and oxidative pathways related to carbon, sulfur, nitrogen, and iron. Three genomes were selected for pangenomic analysis, assigned as Truepera sp., Ca. Methylomirabilis sp., and Ca. Koribacter sp. based on their lifestyles (radiation resistance, anaerobic methane oxidation, and potential iron oxidation). These bacteria exhibit genes involved with multiple DNA repair strategies, starvation, and stress response. Because these groups have few reference genomes deposited in databases, our study adds important genomic information about these lineages. The combination of techniques applied in this study allowed us to unveil the potential relationships between microbial genomes and their ecological processes with the cave mineralogy and highlight the lineages involved with anaerobic methane oxidation, iron oxidation, and radiation resistance as functional models for the search for extant life-forms outside our planet in silica- and iron-rich environments and potentially on Mars. (AU) | |
| Processo FAPESP: | 21/05083-8 - Caracterização síncrotron multitécnica em nanoescala aplicada ao problema da biogenicidade de minerais |
| Beneficiário: | Douglas Galante |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |
| Processo FAPESP: | 12/23241-0 - Metagenoma de comunidades microbianas de ambientes com atividade geotermal na Ilha Vulcânica Deception, Antártica |
| Beneficiário: | Amanda Gonçalves Bendia |
| Modalidade de apoio: | Bolsas no Brasil - Doutorado |
| Processo FAPESP: | 16/06114-6 - O Sistema Terra e a evolução da vida durante o Neoproterozoico |
| Beneficiário: | Ricardo Ivan Ferreira da Trindade |
| Modalidade de apoio: | Auxílio à Pesquisa - Temático |
| Processo FAPESP: | 20/02537-5 - Explorando a Nanopaleontologia: novos parâmetros de biogenicidade e estudo de bioassinaturas com a luz síncrotron |
| Beneficiário: | Flávia Callefo |
| Modalidade de apoio: | Bolsas no Brasil - Pós-Doutorado |