Estimating the capability of different phytoplankton groups to adapt to contamination: herbicides will affect phytoplankton species differently

The New Phytologist
I Emma HuertasEduardo Costas

Abstract

• Investigating the differential capacity of the response of phytoplankton to human-induced environmental forcing has become a key issue to understanding further the future repercussions on the functioning of aquatic ecosystems. • The initial tolerance to the widely dispersed herbicide simazine was measured in diverse phytoplankton species. An experimental ratchet system maintaining large populations of dividing cells (which ensures the occurrence of rare spontaneous mutations that confer adaptation) and a strong selection pressure (which ensures the preservation of such mutations within the population) was later applied to estimate the capability of different groups of phytoplankton to adapt to simazine. • Initially, simazine doses between 0.05 and 0.15 ppm were able to inhibit 100% growth in all the species tested. However, a significant increase in simazine resistance was achieved in all derived populations during the ratchet experiment. The differential capacity for simazine adaptation was observed among the different species. • The capacity of different species to adapt to simazine can be explained in relation to taxonomic group, ploidy, growth rate and habitat preference. Haploid populations of continental Chlorophyta sho...Continue Reading

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Citations

Apr 22, 2011·Proceedings. Biological Sciences·I Emma HuertasEduardo Costas
May 20, 2014·Oecologia·Mónica RoucoEduardo Costas
Mar 29, 2016·PeerJ·Beatriz Baselga-CerveraCamino García-Balboa
Sep 4, 2015·Environmental Science and Pollution Research International·Floriane LarrasAgnès Bouchez
Sep 8, 2016·PeerJ·Weini HuangFernando Fagundes Ferrreira
Dec 22, 2017·Chemosphere·Goni-Urriza MarisolPringault Olivier

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