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. 2021 Oct 20;12:737454. doi: 10.3389/fmicb.2021.737454

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Copyright © 2021 Xie, Xu, Li, Li, Yi, Li, Han, Zhang and Zhang.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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(A) Growth rate, (B) chlorophyll a (Chl a) content, (C) carotenoid content and (D) carotenoid: Chl a ratio of Emiliania huxleyi RCC1266 under present DIC concentration and high pH value (LCHpH, gray), low DIC concentration and low pH value (LCLpH, reduced pH), high DIC concentration and high pH value (HCHpH, ocean carbonation), and high DIC concentration and low pH value (HCLpH, ocean acidification, gray) treatments. Data were obtained after cells were acclimated to experimental conditions for at least 13 generations and means±standard deviation (SD) of 4 replicate populations. Different letters (a, b, c, d) in each panel represent significant differences between four treatments (Tukey Post hoc, p<0.05).