Potential antifouling compounds with antidiatom adhesion activities from the sponge-associated bacteria,<i>Bacillus pumilus</i>

Xin, Xiaying; Huang, Guohe; Zhou, Xiaojian; Sun, Wei; Jin, Cuili; Jiang, Wei; Zhao, Shan

doi:10.1080/01694243.2016.1242219

Cited by 14 publications

(9 citation statements)

References 40 publications

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“…Marine biofouling refers to the gathering of unwanted microorganisms, algae, and animals on an artificial surface immersed in the seawater [1][2][3]. Marine organisms which cause the fouling are various and include many species from protozoa to vertebrates [3][4][5]. However, bacteria, diatoms, barnacles and macroalgae are some of the most important marine fouling organisms.…”

Section: Introductionmentioning

confidence: 99%

Antifouling and antibacterial activities of bioactive extracts from different organs of the sea cucumber Holothuria leucospilota

et al. 2020

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In this study, antifouling and antibacterial properties of polar, semi polar and non-polar bioactive compounds derived from the sea cucumber Holothuria leucospilota were investigated. A series comprising n-hexane, ethyl acetate and methanol extracts from four different organs of sea cucumber (body wall, gonad, digestive tract and respiratory tree) were investigated for their antibacterial and antifouling activity against two species of microalgae, larvae of barnacle Amphibalanus amphitrite and a non-target organism: larvae of Artemia salina. Results showed that the highest antibacterial activity was found in the ethyl acetate extract of body wall against Staphylococcus aureus with minimum inhibitory concentration (MIC) of 0.250 mg/mL. The MIC of ethyl acetate extract of body wall ranged between 0.062 and 0.250 mg/mL against two microalgal strains. All extracts showed moderate to low toxicity against larvae of barnacles. The most pronounced anti-barnacle activity was found in the ethyl acetate extract of body wall with median lethal concentration (LC 50) value of 0.049 mg/mL. Among the twelve extracts, the ethyl acetate extracts of body wall showed the maximum antibacterial and antifouling activities. The bioactive compounds of the ethyl acetate extract of the sea cucumber body wall were determined using gas chromatography coupled with mass spectrometry. Fatty acids and terpenes were the major compounds, which may be responsible for antibacterial and antifouling activity of the ethyl acetate extract of body wall of the sea cucumber H. leucospilota.

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Section: Introductionmentioning

confidence: 99%

Antifouling and antibacterial activities of bioactive extracts from different organs of the sea cucumber Holothuria leucospilota

et al. 2020

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“…Prior to the main experiment, Chlorococcum sp. were cultured in modified BG-11 medium to log growth phase. , The culture medium was sterilized at 121 °C, 15 psi for 45 min . To inoculate new cultures, algae were filtered through a 1 μm sterile filter membrane, washed in sterile deionized water, and resuspended in sterile deionized water.…”

Section: Methodsmentioning

confidence: 99%

Insights into the Toxicity of Triclosan to Green Microalga Chlorococcum sp. Using Synchrotron-Based Fourier Transform Infrared Spectromicroscopy: Biophysiological Analyses and Roles of Environmental Factors

Xin¹,

Huang²,

et al. 2018

Environ. Sci. Technol.

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This study investigated the toxicity of triclosan to the green microalga Chlorococcum sp. under multiple environmental stressors. The interactions between triclosan and environmental stressors were explored through full two-way factorial, synchrotron-based Fourier transform infrared spectromicroscopy and principal component analyses. Phosphorus concentration, pH * phosphorus concentration, and temperature * pH * NaCl concentration were the most statistically significant factors under triclosan exposure. The variation of those factors would have a huge impact on biophysiological performances. It is interesting to find Chlorococcum sp. may become more resistant against triclosan in phosphorus-enriched environment. Besides, particular significant factors from multiple environmental stressors showed the impacts of triclosan on the corresponding response of Chlorococcum sp. owing to the specific structure and performance of biomolecular components. Moreover, two high-order interactions of temperature * pH * NaCl concentration and temperature * pH * NaCl concentration * phosphorus concentration had more contributions than others at the subcellular level, which could be attributed to the interactive complexity of biomolecular components. Due to cellular self-regulation mechanism and short exposure time, the biophysiological changes of Chlorococcum sp. were undramatic. These findings can help reveal the interactive complexity among triclosan and multiple environmental stressors. It is suggested that multiple environmental stressors should be considered during ecological risk assessment and management of emerging pollutants.

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“…En base a estos resultados hicimos una revisión bibliográfica para buscar trabajamos similares al nuestro. Encontramos un trabajo publicado por Xin et al (2016) quienes aislaron un B. pumilus desde una esponja marina, la cual demostró actividad anti microalgas (diatomeas), los compuestos bioactivos de esta bacteria fueron aislados por técnicas cromatograficas, purificados por cromatografía liquida (HPLC) y las estructuras moleculares fueron identificados por espectroscopia de resonancia magnética nuclear, espectrometría de masas y cromatografía de gases. Los resultados demostraron por primera vez que los ácidos grasos de B. pumilus inhiben la adhesión de diatomeas a sustratos.…”

Section: Inhibición De Bioincrustaciones Microalgalesunclassified

Bacillus pumilus Marinos Inhibidores de la Fijación de Microalgas a Sustratos Artificiales

et al. 2017

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* Autor a quien debe ser dirigida la correspondenciaRecibido Sep. 5, 2016; Aceptado Oct. 3, 2016; Versión final Nov. 11, 2016, Publicado Abr. 2017 Resumen Se evalúa la inhibición de la fijación microalgal en sustratos artificiales, previamente colonizado con bacterias marinas. Debido a la escasez de agua, la región de Antofagasta en Chile desarrolla la desalinización del agua de mar para sus procesos mineros. La carga biológica del agua de mar genera bioincrustaciones que obstruyen los sistemas de flujo. Las bioincrustaciones se inician con la fijación inicial de moléculas y microorganismos como bacterias y microalgas, los cuales sirven de sustrato y alimento para otros colonizadores. Dos cepas de Bacillus pumilus inhibieron la adherencia de mezclas microalgales, demostrando que estarían secretando metabolitos inhibidores de la fijación. Por lo tanto se concluye que es viable utilizar bacterias marinas como B. pumilus para inhibir la fijación inicial a sustratos artificiales como PVC, de microalgas nativas de las costas del norte de Chile. Palabras claves: bioincrustación; Bacillus pumilus; inhibición; microalga; desalinización Marine Bacillus pumilus Inhibitors of the Fixation of Microalgae to Artificial Substrates AbstractThe inhibition of microalgal fixation in artificial substrates, previously colonized with marine bacteria is evaluated. Due to the shortage of water, the region of Antofagasta in Chile develops desalination of seawater for its mining processes. The Bioburden of the seawater generates biofouling and obstructing of the flow systems. Biofouling start with the initial attachment of molecules and microorganisms like bacteria and microalgae, which serve as substrate and food for other colonists. Two strains of Bacillus pumilus inhibited adhesion of microalgal mix, showing that they produce metabolites that inhibits fixation. It is therefore concluded that it is feasible to use of the marine bacteria B. pumilus to inhibit the initial fixation to artificial substrates such as PVC, of native microalgae the coasts of northern Chile.

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Potential antifouling compounds with antidiatom adhesion activities from the sponge-associated bacteria,Bacillus pumilus

Cited by 14 publications

References 40 publications

Antifouling and antibacterial activities of bioactive extracts from different organs of the sea cucumber Holothuria leucospilota

Antifouling and antibacterial activities of bioactive extracts from different organs of the sea cucumber Holothuria leucospilota

Insights into the Toxicity of Triclosan to Green Microalga Chlorococcum sp. Using Synchrotron-Based Fourier Transform Infrared Spectromicroscopy: Biophysiological Analyses and Roles of Environmental Factors

Bacillus pumilus Marinos Inhibidores de la Fijación de Microalgas a Sustratos Artificiales

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