Marine bacteria from the Gulf of California with antimicrofouling activity against colonizing bacteria and microalgae

Other titles Bacterias marinas del Golfo de California con actividad antimicrobiana frente a bacterias colonizadoras y microalgas
Type Article
Date 2018-12
Language English
Author(s) Sanchez-Rodriguez Diana Elizabeth1, Ortiz-Aguirre Ismael2, Aguila-Ramirez Ruth Noemi3, Guadalupe Rico-Virgen Erika1, Gonzalez-Acosta Barbara3, Hellio Claire4
Affiliation(s) 1 : Univ Guadalajara, CUCSur, Gomez Farias 82, San Patricio Melaque, Jalisco, Mexico.
2 : Univ Autonoma Baja California Sur, Carretera Km 5-5, La Paz, Baja Calif Sur, Mexico.
3 : Inst Politecn Nacl, Ctr Interdisciplinario Ciencias Marinas, Av IPN S-N, La Paz, Baja Calif Sur, Mexico.
4 : Univ Bretagne Occidentale, Biodimar LEMAR, UMR 6539, Plouzane, France.
Source Revista De Biologia Tropical (0034-7744) (Revista De Biologia Tropical), 2018-12 , Vol. 66 , N. 4 , P. 1649-1663
DOI 10.15517/rbt.v66i4.31963
WOS© Times Cited 2
Keyword(s) epibionts, extracts, Shewanella, Staphylococcus, biofouling, antifouling
Abstract

One way of reducing the input of pollutants into the marine environment is to enforce the use of non-toxic antifouling paints in marine protected areas. Thus, the purpose of this study was to detect marine microorganisms that secrete inhibitory substances against bacteria and microalgae to avoid biofouling on manmade structures in La Paz bay, B.C.S., Mexico. The inhibitory potential of 125 bacteria was evaluated against biofilm-forming bacteria. Crude extracts were obtained with methanol and ethyl acetate from 16 bacterial strains that exhibited antagonistic and antibacterial activity in a preliminary screening. Antibacterial and antimicroalgal assays were performed using crude extracts, the minimum inhibitory concentration (MIC) was determined. The highest activity against bacteria and microalgae was found in two strains, Shewanella algae and Staphylococcus sp. The results of this study suggest that extracts of bacteria from the Gulf of California with antimicrobial properties against biofilm-forming bacteria can also prevent the adhesion of microalgae, which may control the development of biofilm formation and, as a consequence, biofouling.

Abstract <p>Una alternativa para reducir la contaminaci&oacute;n en el medio marino es el uso de pinturas anti-incrustantes no t&oacute;xicas en &aacute;reas marinas protegidas. En el presente estudio se propuso encontrar microorganismos marinos que secreten sustancias capaces de inhibir la adhesi&oacute;n de bacterias y microalgas, de esta manera evitar la bioincrustaci&oacute;n en estructuras marinas en la bah&iacute;a de La Paz, B.C.S., M&eacute;xico. Un total de 125 bacterias fueron evaluadas por su capacidad para inhibir el desarrollo de bacterias formadoras de biopel&iacute;culas. En una selecci&oacute;n preliminar de actividad antag&oacute;nica y antibacteriana, 16 cepas bacterianas mostraron potencial actividad inhibitoria, de las que se obtuvieron los extractos crudos con metanol y acetato de etilo. Se realizaron ensayos antibacterianos y anti-microalgales utilizando los extractos crudos, se determin&oacute; la concentraci&oacute;n m&iacute;nima inhibitoria (MIC). Dos cepas mostraron la mayor actividad contra bacterias y microalgas: Shewanella algae y Staphylococcus sp. Los resultados de este estudio sugieren que los extractos de bacterias aisladas en el Golfo de California que poseen propiedades antimicrobianas contra las bacterias formadoras de biofilm y tambi&eacute;n pueden prevenir la adhesi&oacute;n de microalgas, con lo que se podr&iacute;a controlar el desarrollo de la formaci&oacute;n de biopel&iacute;culas y como consecuencia, el biofouling.</p>
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Sanchez-Rodriguez Diana Elizabeth, Ortiz-Aguirre Ismael, Aguila-Ramirez Ruth Noemi, Guadalupe Rico-Virgen Erika, Gonzalez-Acosta Barbara, Hellio Claire (2018). Marine bacteria from the Gulf of California with antimicrofouling activity against colonizing bacteria and microalgae. Revista De Biologia Tropical, 66(4), 1649-1663. Publisher's official version : https://doi.org/10.15517/rbt.v66i4.31963 , Open Access version : https://archimer.ifremer.fr/doc/00616/72762/