Environmental hexavalent chromium exposure induces gut microbial dysbiosis in chickens

Hexavalent chromium [Cr (VI)] is a hazardous heavy metal that pollutes soil, water and crops. Moreover, its prolonged exposure can harm the gastrointestinal system, liver and respiratory tract in different species, but knowledge regarding Cr (VI) influence on gut microbiota in chickens remains scarc...

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Autores principales: Aoyun Li, Jinxue Ding, Ting Shen, Zhaoqing Han, Jiabin Zhang, Zain Ul Abadeen, Muhammad Fakhar-e-Alam Kulyar, Xin Wang, Kun Li
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Publicado: Elsevier 2021
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spelling oai:doaj.org-article:089726293ef0402294c79e3de4fef4512021-11-06T04:14:05ZEnvironmental hexavalent chromium exposure induces gut microbial dysbiosis in chickens0147-651310.1016/j.ecoenv.2021.112871https://doaj.org/article/089726293ef0402294c79e3de4fef4512021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S0147651321009830https://doaj.org/toc/0147-6513Hexavalent chromium [Cr (VI)] is a hazardous heavy metal that pollutes soil, water and crops. Moreover, its prolonged exposure can harm the gastrointestinal system, liver and respiratory tract in different species, but knowledge regarding Cr (VI) influence on gut microbiota in chickens remains scarce. Therefore, this study was performed to investigate the impact of Cr (VI) on gut microbiota in chickens. Results revealed that the gut microbiota in Cr (VI)-induced chickens exhibited a distinct reduction in alpha diversity, accompanied by significant shifts in microbial composition. Specifically, Firmicutes and Bacteroidetes were the most dominant phyla in the control chickens, whereas Firmicutes and Actinobacteria were observed to be predominant in the Cr (VI)-induced populations. Moreover, the types and relative abundances of predominant bacterial genus in control and Cr (VI)-induced chickens were also different. Bacterial taxonomic analysis revealed that the relative abundances of 3 phyla and 7 genera obviously increased, whereas 8 phyla and 30 genera dramatically decreased during Cr (VI) induction. Among them, 1 phylum (Deferribacteres) and 5 genera (Butyricicoccus, Butyricimonas, Intestinimonas, Lachnospiraceae_FCS020_group and Ruminococcaceae_V9D2013_group) even could not be found in the gut microbial community of Cr (VI)-induced chickens. Taken together, our study indicated that the long-term exposure to Cr (VI) dramatically alter the gut microbial diversity and composition in chickens. Notably, it represents a breakthrough in understanding the impact of Cr (VI) on the intestinal microbiota of chickens.Aoyun LiJinxue DingTing ShenZhaoqing HanJiabin ZhangZain Ul AbadeenMuhammad Fakhar-e-Alam KulyarXin WangKun LiElsevierarticleHexavalent chromiumHeavy metalGut microbiotaChickenEnvironmental pollutionTD172-193.5Environmental sciencesGE1-350ENEcotoxicology and Environmental Safety, Vol 227, Iss , Pp 112871- (2021)
institution DOAJ
collection DOAJ
language EN
topic Hexavalent chromium
Heavy metal
Gut microbiota
Chicken
Environmental pollution
TD172-193.5
Environmental sciences
GE1-350
spellingShingle Hexavalent chromium
Heavy metal
Gut microbiota
Chicken
Environmental pollution
TD172-193.5
Environmental sciences
GE1-350
Aoyun Li
Jinxue Ding
Ting Shen
Zhaoqing Han
Jiabin Zhang
Zain Ul Abadeen
Muhammad Fakhar-e-Alam Kulyar
Xin Wang
Kun Li
Environmental hexavalent chromium exposure induces gut microbial dysbiosis in chickens
description Hexavalent chromium [Cr (VI)] is a hazardous heavy metal that pollutes soil, water and crops. Moreover, its prolonged exposure can harm the gastrointestinal system, liver and respiratory tract in different species, but knowledge regarding Cr (VI) influence on gut microbiota in chickens remains scarce. Therefore, this study was performed to investigate the impact of Cr (VI) on gut microbiota in chickens. Results revealed that the gut microbiota in Cr (VI)-induced chickens exhibited a distinct reduction in alpha diversity, accompanied by significant shifts in microbial composition. Specifically, Firmicutes and Bacteroidetes were the most dominant phyla in the control chickens, whereas Firmicutes and Actinobacteria were observed to be predominant in the Cr (VI)-induced populations. Moreover, the types and relative abundances of predominant bacterial genus in control and Cr (VI)-induced chickens were also different. Bacterial taxonomic analysis revealed that the relative abundances of 3 phyla and 7 genera obviously increased, whereas 8 phyla and 30 genera dramatically decreased during Cr (VI) induction. Among them, 1 phylum (Deferribacteres) and 5 genera (Butyricicoccus, Butyricimonas, Intestinimonas, Lachnospiraceae_FCS020_group and Ruminococcaceae_V9D2013_group) even could not be found in the gut microbial community of Cr (VI)-induced chickens. Taken together, our study indicated that the long-term exposure to Cr (VI) dramatically alter the gut microbial diversity and composition in chickens. Notably, it represents a breakthrough in understanding the impact of Cr (VI) on the intestinal microbiota of chickens.
format article
author Aoyun Li
Jinxue Ding
Ting Shen
Zhaoqing Han
Jiabin Zhang
Zain Ul Abadeen
Muhammad Fakhar-e-Alam Kulyar
Xin Wang
Kun Li
author_facet Aoyun Li
Jinxue Ding
Ting Shen
Zhaoqing Han
Jiabin Zhang
Zain Ul Abadeen
Muhammad Fakhar-e-Alam Kulyar
Xin Wang
Kun Li
author_sort Aoyun Li
title Environmental hexavalent chromium exposure induces gut microbial dysbiosis in chickens
title_short Environmental hexavalent chromium exposure induces gut microbial dysbiosis in chickens
title_full Environmental hexavalent chromium exposure induces gut microbial dysbiosis in chickens
title_fullStr Environmental hexavalent chromium exposure induces gut microbial dysbiosis in chickens
title_full_unstemmed Environmental hexavalent chromium exposure induces gut microbial dysbiosis in chickens
title_sort environmental hexavalent chromium exposure induces gut microbial dysbiosis in chickens
publisher Elsevier
publishDate 2021
url https://doaj.org/article/089726293ef0402294c79e3de4fef451
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