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. 2018 Nov 12;18:277. doi: 10.1186/s12870-018-1513-0

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© The Author(s). 2018

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. 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.

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Fig. 3 — Spatial changes in the maximum efficiency of photosystem II (F_v/F_m) of Arabidopsis lyrata ssp. petraea seedlings. Images represent the recovery of F_v/F_m in a single representative plant 2, 5 and 16 days after − 9 °C treatment (false colour imaging) from the Irish (Leitrim) and Norwegian (Helin) populations. Prior to sub-zero treatment, plants were exposed to 2 °C for 2 days