Analysis of microbial lipids deposited on Mars Global Simulant (MGS-1) by geomatrix-assisted laser desorption/ionization-mass spectrometry

Autor(es)

dos Santos, Alef ^[1] ; Rodrigues-Filho, Edson ^[1] ; Petrucelli Homem, Manoel Gustavo ^[2]

Afiliação do(s) autor(es)

^[1] Univ Fed Sao Carlos, Dept Quim, Lab Bioquim Micromol Microorganismos LaBioMMi, BR-13565905 Sao Carlos, SP - Brazil

^[2] Univ Fed Sao Carlos, Dept Quim, Lab Colisoes Eletron & Foton LCEF, BR-13565905 Sao Carlos, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: International Journal of Astrobiology; v. 20, n. 3, p. 234-240, JUN 2021.
• Citações Web of Science: 0

Resumo

Lipids are among the organic substances that can work as biosignatures, indicating life in an environment. We present an experimental investigation concerning analysis of lipids from a microbial source deposited on the Mars Global Simulant (MGS-1) regolith by geomatrix-assisted laser desorption/ionization-mass spectrometry (GALDI-MS). Our results indicate that lipids from intact microbial cells of a black yeast strain can be detected in these mimetic samples of Martian soil. These lipid molecules are predominantly associated with the occurrence of adducts in the GALDI-MS spectra. The results can be helpful in the planning of future planetary missions. (AU)

• Processo FAPESP: 10/52312-8 - Rede de estudos em biodiversidade microbiana: isolamento, desenvolvimento de estratégias de identificação rápida, conservação, interações entre espécies e explorações biotecnológicas
• Beneficiário: Edson Rodrigues Filho
• Modalidade de apoio: Auxílio à Pesquisa - Programa BIOTA - Regular