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Environ Pollut

Title:		Underpinning the ecological response of mixed chlorinated volatile organic compounds (CVOCs) associated with contaminated and bioremediated groundwaters: A potential nexus of microbial community structure and function for strategizing efficient bioremediation
Author(s):		Hussain B; Chen JS; Huang SW; Tsai IS; Rathod J; Hsu BM;
Address:		"Department of Earth and Environmental Sciences, National Chung Cheng University, Chiayi County, Taiwan; Department of Biomedical Sciences, National Chung Cheng University, Chiayi, Taiwan. Department of Medical Research, E-Da Hospital, I-Shou University, Kaohsiung, Taiwan. Institute of Environmental Toxin and Emerging Contaminant, Cheng Shiu University, Kaohsiung, Taiwan; Center for Environmental Toxin and Emerging Contaminant Research, Cheng Shiu University, Kaohsiung, Taiwan. Department of Earth and Environmental Sciences, National Chung Cheng University, Chiayi County, Taiwan; Doctoral Program in Science, Technology, Environment and Mathematics, National Chung Cheng University, Chiayi, Taiwan. Department of Environmental Biotechnology, Gujarat Biotechnology University, Near Gujarat International Finance and Tec (GIFT)-City, Gandhinagar, Gujarat, India. Department of Earth and Environmental Sciences, National Chung Cheng University, Chiayi County, Taiwan. Electronic address: bmhsu@ccu.edu.tw"
Journal Title:		Environ Pollut
Year:		2023
Volume:		20230718
Issue:
Page Number:		122215 -
DOI:		10.1016/j.envpol.2023.122215
ISSN/ISBN:		1873-6424 (Electronic) 0269-7491 (Linking)
Abstract:		"Understanding the structure, dynamics, and functionality of microbial communities is essential for developing sustainable and effective bioremediation strategies, particularly for sites contaminated with mixed chlorinated volatile organic compounds (CVOCs), which can make the biodegradation process more complex and challenging. In this study, 16S rRNA amplicon sequencing revealed a significant change in microbial distribution in response to CVOCs contamination. The loss of sensitive taxa such as Proteobacteria and Acidobacteriota was observed, while CVOCs-resistant taxa such as Campilobacterota were found significantly enriched in contaminated sites. Additionally, varying abundances of crucial enzymes involved in the sequential biodegradation of CVOCs were expressed depending on the contamination level. Association analysis revealed that specific genera such as Sulfurospirillum, Azospira, Trichlorobacter, Acidiphilium, and Magnetospririllum could relatively survive under higher levels of CVOC contamination, whereas pH, ORP and temperature had a negative influence in their abundance and distribution. However, Dechloromonas, Thiobacillus, Pseudarcicella, Hydrogenophaga, and Sulfuritalea showed a negative relationship with CVOC contamination, highlighting their sensitivity towards CVOC contamination. These findings provide valuable insights into the relationship among ecological responses, the groundwater bacterial community, and their functionality in response to mixed CVOC contamination, offering a fundamental basis for developing effective and sustainable bioremediation strategies for CVOC-contaminated groundwater systems"
Keywords:		"*Water Pollutants, Chemical/analysis *Volatile Organic Compounds/analysis Biodegradation, Environmental RNA, Ribosomal, 16S *Microbiota *Groundwater/chemistry Bioremediation Ecological responses Groundwater contamination Groundwater microbial community Mi;"
Notes:		"MedlineHussain, Bashir Chen, Jung-Sheng Huang, Shih-Wei Tsai, I-Sen Rathod, Jagat Hsu, Bing-Mu eng England 2023/07/21 Environ Pollut. 2023 Oct 1; 334:122215. doi: 10.1016/j.envpol.2023.122215. Epub 2023 Jul 18"