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. 2022 Jul 4;12:11264. doi: 10.1038/s41598-022-14429-x

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© The Author(s) 2022

Open Access This 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/.

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Improved thermomemory in ataf1 mutants. (a) Thermomemory phenotype of ATAF1 transgenic plants. Seedlings of ATAF1-OE, ataf1-2, ataf1–4, and WT were exposed to the HS regime schematically shown in Fig. 1a. Photos were taken 14 days after the second HS (triggering stimulus). The phenotype of one representative replicate of at least three independent biological replicates is shown. (b,c) Quantification of the results shown in (a). (b) Percentage of seedlings in different phenotypic classes; the thermotolerance phenotype was classified into three classes depending of the extent of plant recovery. The phenotype classes are illustrated in panel (a). (c) Seedling fresh mass in HS-primed and triggered plants compared to unstressed control plants. Error bars represent the standard deviation, calculated from three biological replicates; each replicate is the average mass of 13 seedlings. Significant differences between transgenic and WT plants were calculated using Student’s t-test; *indicates P-value < 0.05.