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- W4282841010 abstract "• Design of the synthetic protein LcGC is based on the LCCL and CBD domains. • LcGC has strong capacity to bind glucan, liposaccharide, and teichoic acid. • LcGC assists root recruitment and colonization of functional bacteria. • LcGC enhances growth and stress tolerance of plants with functional bacteria. • LcGC improves cadmium removal by the plants with functional bacteria. Functional bacteria promote the efficiency of phytoremediation by enhancing plant growth and participating in decontamination. However, their activity is frequently compromised by the weakness of their interaction with plant roots. In this study, we designed the artificial protein LcGC composed of a bacterium-binding domain, a GFP fluorescence reporter, and a carbohydrate-binding domain to function as a physical contact between functional bacteria and plant roots. This protein was then expressed in an engineered yeast cell factory and extracted to assess its effect on rhizosphere microbiome composition, plant growth, and cadmium removal in a simulated phytoremediation system containing the remediation plant Lemna minor and the functional heavy metal-capturing bacteria Cupriavidus taiwanensis and Pseudomonas putida. LcGC efficiently bound bacterial cell wall components and glucan, endowing it high efficiency to bind both functional bacteria and plant roots. Scanning microscopy and microbiome analysis revealed that LcGC enhanced root recruitment and colonization of functional bacteria on the root surfaces. Furthermore, LcGC with the aid of single C. taiwanensis or of C. taiwanensis and P. putida in combination promoted plant growth, enhanced tolerance to cadmium-induced oxidative stress, and consequently improved cadmium-removing capacity of the plants, with the percent of cadmium removal reaching up to 91% for LcGC plus C. taiwanensis , and to 96% for LcGC plus C. taiwanensis and P. putida on day 7. This study provided a physical contact-based strategy to enhance the interaction between functional microbes and plant roots for efficient phytoremediation." @default.
- W4282841010 created "2022-06-15" @default.
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- W4282841010 date "2022-08-01" @default.
- W4282841010 modified "2023-10-10" @default.
- W4282841010 title "Engineered bacterium-binding protein promotes root recruitment of functional bacteria for enhanced cadmium removal from wastewater by phytoremediation" @default.
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- W4282841010 doi "https://doi.org/10.1016/j.watres.2022.118746" @default.
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