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. 2020 Nov 16;20:351. doi: 10.1186/s12866-020-02039-4

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© The Author(s) 2020

Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated in a credit line to the data.

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Fig. 2 — Transcriptomic analysis of B. megaterium FDU301 cultured for 4 h. a: Heatmap of the gene expression correlation, b: The results of PCA analysis, c: Volcano map of differentially expressed genes. L_1, L_2, L_3 and P_1, P_2, P_3 were replicas of group L (LB medium) and P (LB medium with 15% PEG), respectively. Gray circles, red diamonds, and green represented genes with no significant changes, upregulated genes, and downregulated genes, respectively. FC: fold of change in the transcriptional level in the simulated arid condition (LB medium with 15% PEG200, w/w) comparing to normal LB medium