PMID- 36110292 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220917 IS - 1664-302X (Print) IS - 1664-302X (Electronic) IS - 1664-302X (Linking) VI - 13 DP - 2022 TI - Toxicity and modulation of silver nanoparticles synthesized using abalone viscera hydrolysates on bacterial community in aquatic environment. PG - 968650 LID - 10.3389/fmicb.2022.968650 [doi] LID - 968650 AB - Polysaccharide decorated silver nanoparticles (AgNPs) are a new type of antibacterial agent in aquaculture, but their effects on the bacterial community structure in aquaculture water are still unknown. In this study, the primary hydrolysate from abalone (Haliotis discus hannai) viscera (AVH) was used to biosynthesize AVH-AgNPs by in situ reduction, and the crystallinity nature, size, morphology, and chemical composition were analyzed by high-resolution characterization techniques such as Ultraviolet-visible spectroscopy (UV-vis), X-rays diffraction (XRD), Transmission Electron Microscope (TEM), Dynamic light scattering (DLS), Zeta potential, inductively coupled plasma-optical emission spectrometry (ICP-OES) and Turbiscan stability index (TSI) values. Furthermore, the acute toxicity of AVH-AgNPs to zebrafish (Danio rerio) and their effects on bacterial community structure in fish culture water at low concentrations were studied. The results showed that the spherical AVH-AgNPs with an average diameter of 54.57 +/- 12.96 nm had good stability, low toxicity, and good in vitro antibacterial activity. Within the experimental concentration range, all AVH-AgNPs treatments had decreased the bacterial diversity in zebrafish culture water to varying degrees. The bacteria with significantly decreased abundances were pathogenic or potential pathogenic, such as Aeromonas veronii, Flavobacterium columnare, and genera Flectobacillus and Bosea. The abundance of Haliscomenobacter sp. JS224, which might cause sludge swelling, also decreased significantly. On the other hand, the relative abundance of some bacterial taxa could remove xenobiotics (e.g., Runella defluvii and Phenylobacterium), control water eutrophication (Sediminibacterium), and reduce toxic algae proliferation (Candidatus Intestinusbacter nucleariae and Candidatus Finniella), increased significantly. Thus, the application of AVH-AgNPs in aquaculture water at low concentrations is relatively safe and has positive significance for improving the aquaculture environment. Also, AVH-AgNPs have good prospects in aquaculture. CI - Copyright (c) 2022 Zhang, Yang, Ni, Ma, Xiong and Jian. FAU - Zhang, Yue AU - Zhang Y AD - Engineering Research Center of the Modern Technology for Eel Industry, Ministry of Education, Fisheries College of Jimei University, Xiamen, China. FAU - Yang, Zhuan AU - Yang Z AD - Engineering Research Center of the Modern Technology for Eel Industry, Ministry of Education, Fisheries College of Jimei University, Xiamen, China. FAU - Ni, Jing AU - Ni J AD - Engineering Research Center of the Modern Technology for Eel Industry, Ministry of Education, Fisheries College of Jimei University, Xiamen, China. FAU - Ma, Ying AU - Ma Y AD - Engineering Research Center of the Modern Technology for Eel Industry, Ministry of Education, Fisheries College of Jimei University, Xiamen, China. FAU - Xiong, Hejian AU - Xiong H AD - College of Ocean Food and Biological Engineering, Jimei University, Xiamen, China. FAU - Jian, Wenjie AU - Jian W AD - Institute of Respiratory Diseases, Xiamen Medical College, Xiamen, China. LA - eng PT - Journal Article DEP - 20220830 PL - Switzerland TA - Front Microbiol JT - Frontiers in microbiology JID - 101548977 PMC - PMC9468672 OTO - NOTNLM OT - abalone viscera OT - aquaculture water OT - bacterial community OT - silver nanoparticles OT - zebrafish COIS- The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. EDAT- 2022/09/17 06:00 MHDA- 2022/09/17 06:01 PMCR- 2022/08/30 CRDT- 2022/09/16 02:28 PHST- 2022/06/14 00:00 [received] PHST- 2022/08/10 00:00 [accepted] PHST- 2022/09/16 02:28 [entrez] PHST- 2022/09/17 06:00 [pubmed] PHST- 2022/09/17 06:01 [medline] PHST- 2022/08/30 00:00 [pmc-release] AID - 10.3389/fmicb.2022.968650 [doi] PST - epublish SO - Front Microbiol. 2022 Aug 30;13:968650. doi: 10.3389/fmicb.2022.968650. eCollection 2022.