A peptide of PilZ domain-containing protein controls wastewater-treatment-membrane biofouling by inducing bacterial attachment

Lee, Min Hee; Choi, Seung-Ju; Jang, Duksoo; Kang, Seoktae; Hee-Jung, Jung; Hwang, Dong Soo

doi:10.1016/j.watres.2023.120085

Water Research

2023

DOI: 10.1016/j.watres.2023.120085

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A peptide of PilZ domain-containing protein controls wastewater-treatment-membrane biofouling by inducing bacterial attachment

Min Hee Lee

Seung-Ju Choi

Duksoo Jang

et al.

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Cited by 6 publications

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Visible‐light‐driven water‐soluble zinc oxide quantum dots for efficient control of citrus canker

Rao,

Yue,

Gao

et al. 2024

Pest Management Science

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BACKGROUNDCitrus canker caused by Xanthomonas citri subsp. citri (Xcc) is a devastating bacterial disease that reduces citrus yield and quality, posing a serious threat to the citrus industry. Several conventional chemicals have been used to control citrus canker. However, this approach often leads to excessive use of chemical agents, can exacerbate environmental pollution, and promotes the development of resistant Xcc. Therefore, there is significant interest in the development of efficient and environmentally friendly technologies to control citrus canker.RESULTSIn this study, water‐soluble ZnO quantum dots (ZnO QDs) were synthesised as an efficient nanopesticide against Xcc. The results showed that the antibacterial activity of ZnO QDs irradiated with visible light (EC50=33.18 μg/mL) was ~3.5 times higher than that of the dark‐treated group (EC50=114.80 μg/mL). ZnO QDs induced the generation of reactive oxygen species (•OH, •O‐ 2, and 1O2) under light irradiation, resulting in DNA damage, cytoplasmic destruction, and decreased catalase and superoxide dismutase activities. Transcription analysis showed down‐regulation of Xcc genes related to ‘biofilms, virulence, adhesion’, and ‘DNA transfer’ exposure to ZnO QDs. More importantly, ZnO QDs also promoted the growth of citrus.CONCLUSIONThis research provides new insights into the photocatalytic antibacterial mechanisms of ZnO QDs and supports the development of more efficient and safer ZnO QDs‐based nanopesticides to control citrus canker.

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Visible‐light‐driven water‐soluble zinc oxide quantum dots for efficient control of citrus canker

Rao,

Yue,

Gao

et al. 2024

Pest Management Science

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Bioinspired Carbon‐Silver Sulfide Scaffold with Synergistic Enhanced Light Capture and Anti‐Biofouling Property for Stable Solar Steam Generation

You,

Xing,

et al. 2024

Small

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Carbon material is a hot topic in solar evaporation. Due to the widely distributed microorganisms in natural water, biofouling has limited the actual application of solar evaporation material. Although carbon material lacks of nutrition for microbe, it is still vulnerable to biofouling because of the efficient pollutant adsorption property. However, current anti‐biofouling design focuses on microbial control, neglects its influence on evaporators light absorption, that is usually a trade‐off with evaporation efficiency. Herein, a bioinspired aligned carbon‐Ag2S scaffold is introduced with synergistical enhanced light absorption (increased to 98.0% from 97.4%) and anti‐biofouling property. The bioinspired aligned carbon‐Ag2S scaffold exhibits a 1.87 kg m−2 h−1 evaporation rate under one sun, superior to pure carbon scaffold (1.78 kg m−2 h−1). It also maintains efficient light capture (‐97.2%) and evaporation rate (1.73 kg m−2 h−1) after bacterial interference, avoiding sharp decline in light absorption (reduced to 83.3–87.6%) and evaporation performance (reduced to 1.24–1.28 kg m−2 h−1) which occurs in carbon scaffold due to biofouling. The carbon‐Ag2S scaffold shows solid advantage in balancing light captures and biofouling control, compared to carbon‐ZnO scaffold with conventional anti‐biofouling design, which inhibits biofouling sacrificing light absorption (reduced to 89.8%) and evaporation performance (reduced to 1.41 kg m−2 h−1).

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Adsorptive chito-beads for control of membrane fouling

Choi,

Osman,

Kim

et al. 2024

Carbohydrate Polymers

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A peptide of PilZ domain-containing protein controls wastewater-treatment-membrane biofouling by inducing bacterial attachment

Cited by 6 publications

References 58 publications

Visible‐light‐driven water‐soluble zinc oxide quantum dots for efficient control of citrus canker

Visible‐light‐driven water‐soluble zinc oxide quantum dots for efficient control of citrus canker

Bioinspired Carbon‐Silver Sulfide Scaffold with Synergistic Enhanced Light Capture and Anti‐Biofouling Property for Stable Solar Steam Generation

Adsorptive chito-beads for control of membrane fouling

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