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. 2023 Nov 22;14:1292937. doi: 10.3389/fmicb.2023.1292937

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Copyright © 2023 Li, Zhu, Yang, Wang, Liu and Yang.

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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Growth curve and UV–visible absorption spectrum for pigments of CGA009 strains with and without crtI deletion. (A) The color of strain CGA009 and CGA009-ΔcrtI cultured in a salt-free environment. (B) UV–visible absorption spectra (400–850 nm) of extracted pigments of CGA009 and CGA009-ΔcrtI. (C) Growth curve of CGA009 and CGA009-ΔcrtI at different salt concentrations (0, 1.5, 2.0, and 2.5%). Strains were cultivated in a PM medium with 20 mM acetate as the carbon source. Three biological replicates were performed for each treatment.