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. 2021 Jan 11;11:611080. doi: 10.3389/fmicb.2020.611080

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Copyright © 2021 Peng, Liu and Huang.

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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Differentially expressed genes in nitrogen metabolism in C. nivalis and C. reinhardtii. Arrows represent the direction of reactions. Enzymes are marked by solid rectangles, and substrates and products are marked by circles. Dashed rectangles indicate pathways connected to nitrogen metabolism. Upregulated and downregulated genes are indicated by red and blue, respectively. AMT, ammonium transporter; GDH, glutamate dehydrogenase; GLT, glutamate synthase; GS, glutamine synthetase; NIR, nitrite reductase; NR, nitrate reductase; NRT, nitrate/nitrite transporter.