Toxicity of graphene oxide to white rot fungus Phanerochaete chrysosporium

Xie, Jingru; Zhu, Ming; Li, Hongliang; Ye, Hua; Yu, Baowei; Wu, Ruihan; Liu, Xiaoyang; Bai, Yitong; Yang, Shengrong

doi:10.1016/j.chemosphere.2016.02.097

Cited by 88 publications

(64 citation statements)

References 49 publications

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“…At all RGO concentrations, Lac activities of P. chrysosporium were not affected by RGO ( p > 0.05). Considering that RGO had negligible inuence of enzyme activity in solution, 24 the unchanged Lac activity implied that the secretion of Lac was not affected by RGO. This was consistent with the literature results.…”

Section: Decomposition Activitymentioning

confidence: 99%

“…24 Although RGO appeared to have higher nontoxic concentrations in this study, it should be noticed that RGO was non-dispersible in the medium and the aggregation of RGO would reduce the practical exposure concentrations. In addition, RGO had lower binding affinity to proteins and less impact on the protein structures; 20 therefore, the lower toxicity of RGO was not surprising.…”

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confidence: 99%

“…We have earlier reported that GO inhibited the growth of white-rot fungus Phanerochaete chrysosporium and led to the complete loss of decomposition activity at high GO concentrations. 24 Zeng et al reported that the toxicity of Ag nanoparticles (NPs) to P. chrysosporium was regulated by the sulde source. The thioacetamide and NaHS promoted the activation of P. chrysosporium by citrate-Ag NPs at a higher concentration.…”

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confidence: 99%

“…For optical microscopy, the samples were xed with 4% formaldehyde, embedded in paraffin, thinsectioned, mounted on glass microscope slides, and then stained with periodic acid Schiff (PAS) stain method. 24 The photographs were recorded under a microscope equipped with a charge coupled device (CAB-30PC, Carbontek Co., Chengdu, China). For TEM observations, the samples were xed with 2.5% glutaraldehyde, post-xed in 1% osmium tetroxide, dehydrated in a graded alcohol series, embedded in epoxy resin, and cut with an ultramicrotome.…”

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confidence: 99%

“…The concentration range was selected to compare the results with our previous report (0-4 mg mL À1 ) and it already covered the most frequently studied concentrations in the literature. 24,32 The pH values of the culture media were adjusted to 5.0 and measured using a pH meter (PB10, Sartorius Co., Germany). The spores were inoculated at the density of 5 Â 10 5 spores per mL.…”

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confidence: 99%

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Influence of reduced graphene oxide on the growth, structure and decomposition activity of white-rot fungus Phanerochaete chrysosporium

Feng

et al. 2018

RSC Adv.

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Graphene materials have attracted great interest nowadays due to their large-scale production and wide applications. It is urgent to evaluate the ecological and environmental risk of graphene materials for the healthy development of the graphene industry. Herein, we evaluated the influence of reduced graphene oxide (RGO) on the growth, structure and decomposition activity of white-rot fungus, whose decomposition function is vital for carbon cycle. RGO slightly stimulated the fresh weight and dry weight gains of Phanerochaete chrysosporium. A larger number of fibrous structures were observed at low RGO concentrations in P. chrysosporium, which was consistent with the elongation of cells observed under a transmission electron microscope. RGO did not affect the chemical composition of P. chrysosporium.Moreover, the laccase production of P. chrysosporium was not influenced by RGO. The degradation activities of P. chrysosporium for dye and wood appeared to be promoted slightly, but the differences were insignificant compared to the control. Therefore, RGO had low toxicity to white-rot fungus and was relatively safe for the carbon cycle.

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Section: Decomposition Activitymentioning

confidence: 99%

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