Phosphorus Influences the Interaction Between Toxigenic Microcystis and Chloramphenicol

  • Lin Luo
  • Jieming LiEmail author
  • Zhong Zhang
  • Yue Yuan


Microcystis growth and physiological responses to chloramphenicol (CAP)-stress were explored at different phosphorus (P) concentrations during 20-day exposure. Under CAP-stress, Microcystis exhibited (i) stronger total protein synthesis and antioxidant defenses at 5 mg/L P than 0.05–0.5 mg/L P in early test period (before day 8), and (ii) greater CAP-removal via biodegradation at 5 mg/L P in mid-late period. Due to above mechanisms, 5 mg/L P largely alleviated the inhibitory effect of CAP on Microcystis growth until test end, thus minimizing CAP toxicity to Microcystis, compared with 0.05–0.5 mg/L P. Moreover, microcystin-production and -release by Microcystis under CAP-stress were also P-dependent. These results suggested that under CAP-stress, although Microcystis growth was more inhibited at 0.05–0.5 mg/L P, higher microcystin-release and CAP residual at 0.05–0.5 mg/L P than at 5 mg/L P still caused eco-risks, which had important implication for risk assessment during Microcystis-dominated blooms and CAP pollution co-occurrence in different waters.


Microcystis Chloramphenicol Phosphorus Physiological response Cell oxidative damage 



This work was funded by the Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20130008120026).


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© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  1. 1.College of Resources and Environmental SciencesChina Agricultural UniversityBeijingChina

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