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. 2021 May 28;21:242. doi: 10.1186/s12870-021-03033-2

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© The Author(s) 2021

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. 5 — AtGLK1 participates in the plastid retrograde signal-mediated anthocyanin accumulation in Arabidopsis. a Real-time quantitative PCR analysis of AtGLK1 transcript accumulation in wild-type seedlings grown on 1/2 MS medium supplemented without (Control) or with 5 μM norflurazon (NF) or with 0.5 mM lincomycin (Linc). b Images of representative seedlings of the wild-type (Col), glk1 glk2 double mutant, and AtGLK1-overexpressing (OEGLK1-1 and OEGLK1-2) seedlings grown for 4 days on 1/2 MS medium supplemented without (Control) or with 5 μM norflurazon (NF) or with 0.5 mM lincomycin (Linc). c Absolute anthocyanin contents and relative anthocyanin contents d of the wild-type, glk1 glk2 double mutant, and AtGLK1-overexpressing seedlings grown on 1/2 MS medium for 4 days. The asterisks indicate statistically significant differences compared with the corresponding wild-type (Student’s t test: *P < 0.05)