Effect of selenite on morphology and respiratory activity of Phanerochaete chrysosporium biofilms

Abstract : The temporal and spatial effects of selenite (SeO32−) on the physical properties and respiratory activity of Phanerochaete chrysosporium biofilms, grown in flow-cell reactors, were investigated using oxygen microsensors and confocal laser scanning microscopy (CLSM) imaging. Exposure of the biofilm to a SeO32− load of 1.67 mg Se L−1 h−1 (10 mg Se L−1 influent concentration), for 24 h, resulted in a 20% reduction of the O2 flux, followed by a ∼10% decrease in the glucose consumption rate. Long-term exposure (4 days) to SeO32− influenced the architecture of the biofilm by creating a more compact and dense hyphal arrangement resulting in a decrease of biofilm thickness compared to fungal biofilms grown without SeO32−. To the best of our knowledge, this is the first time that the effect of SeO32− on the aerobic respiratory activity on fungal biofilms is described.
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https://hal.archives-ouvertes.fr/hal-01394427
Contributor : Yoan Pechaud <>
Submitted on : Wednesday, November 9, 2016 - 2:07:07 PM
Last modification on : Tuesday, March 13, 2018 - 5:50:02 PM

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Erika J. Espinosa-Ortiz, Yoan Pechaud, Lauchnor Ellen, Eldon R. Rene, Gerlach Robin, et al.. Effect of selenite on morphology and respiratory activity of Phanerochaete chrysosporium biofilms. Bioresource Technology, Elsevier, 2016, 210, pp.138-145. ⟨hal-01394427⟩

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