Morpho-physiological responses by Isochrysis galbana Parke to different concentrations of oxytetracycline

Isabella Moro; Riccardo Trentin; Emanuela Moschin; Francesca Dalla Vecchia

doi:10.1016/j.envpol.2020.114273

Morpho-physiological responses by Isochrysis galbana Parke to different concentrations of oxytetracycline

Environ Pollut. 2020 Jul:262:114273. doi: 10.1016/j.envpol.2020.114273. Epub 2020 Feb 28.

Authors

Isabella Moro¹, Riccardo Trentin¹, Emanuela Moschin¹, Francesca Dalla Vecchia²

Affiliations

¹ Department of Biology, University of Padova, Via U. Bassi, 58/B 35131, Padova, Italy.
² Department of Biology, University of Padova, Via U. Bassi, 58/B 35131, Padova, Italy. Electronic address: francesca.dallavecchia@unipd.it.

PMID: 32146366
DOI: 10.1016/j.envpol.2020.114273

Abstract

The pollution of aquatic bodies by pharmaceutical compounds is an emerging environmental problem, with little explored consequences. Oxytetracycline (OTC) is an antibiotic used for treatment of infections caused by a variety of microorganisms and it is widely employed in medicine, livestock husbandry and aquaculture. This pharmaceutical compound may cause deleterious effects on non-target aquatic organisms as microalgae. The objective of this study was to evaluate the effects of OTC on growth, pigment content and morpho-physiology of the microalga Isochrysis galbana Parke. The results highlighted that OTC exposure inhibited the growth of I. galbana in cultures treated with OTC 5.0 and 10.0 mg/L after 3 days and in cultures treated with OTC 5.0, 7.5 and 10.0 mg/L after 5 days. Effects of OTC on cells ultrastructure and physiology consisted in large cytoplasmic lipid inclusions and in a decrease of photosynthetic pigments amount.

Keywords: Isochrysis galbana; Morphology; Oxytetracycline; Pigments; Ultrastructure.

MeSH terms

Anti-Bacterial Agents
Aquaculture
Haptophyta*
Microalgae*
Oxytetracycline*

Substances

Anti-Bacterial Agents
Oxytetracycline