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| Effects of antibiotic exposure on the growth and endophytic bacterial community of Chinese cabbage seedlings |
| Received:January 08, 2017 |
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| KeyWord:antibiotic;vegetable;antibiotic-resistant endophytic bacteria;ecological toxicity |
| Author Name | Affiliation | E-mail | | WANG Pan-liang | College of Life Sciences, Henan Normal University, Xinxiang 453007, China | | | ZHANG Hao | College of Life Sciences, Henan Normal University, Xinxiang 453007, China
School of Environment, Henan Normal University, Xinxiang 453007, China
Key Laboratory for Microorganisms and Functional Molecules(Henan Normal University), University of Henan Province, Xinxiang 453007, China | kele1564@126.com | | WANG Rui-fei | College of Life Sciences, Henan Normal University, Xinxiang 453007, China
Key Laboratory for Microorganisms and Functional Molecules(Henan Normal University), University of Henan Province, Xinxiang 453007, China | | | YANG Qing-xiang | College of Life Sciences, Henan Normal University, Xinxiang 453007, China
School of Environment, Henan Normal University, Xinxiang 453007, China
Key Laboratory for Microorganisms and Functional Molecules(Henan Normal University), University of Henan Province, Xinxiang 453007, China | | | GONG Fu-li | College of Life Sciences, Henan Normal University, Xinxiang 453007, China | | | CHANG Fang-yuan | College of Life Sciences, Henan Normal University, Xinxiang 453007, China | |
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| Abstract: |
| The effects of tetracycline and ciprofloxacin exposure on Chinese cabbage seed germination and seedling growth were assessed using hydroponic culture. Further, the effects of antibiotic exposure on antibiotic-resistant endophytic bacteria colonizing Chinese cabbage seedlings were evaluated through microbial cultivation. The results showed that ciprofloxacin and tetracycline at any concentration higher than 4 mg·L-1 have inhibitory effects, and that these effects are more obvious at higher concentrations, on shoot and root elongation of Chinese cabbage seedlings, while tetracycline at a concentration of 4 mg·L-1 promoted seed germination. At the seedling growth stage, the inhibitory effects on the root length and plant height of Chinese cabbage seedlings were strengthened with increase in the concentrations of both antibiotics. In addition, antibiotic exposure can significantly increase the abundance of corresponding resistant endophytic bacteria, which increase with an increase in the dosage of antibiotics, in vegetable seedlings. |
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