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. 2021 Mar 8;22(5):2736. doi: 10.3390/ijms22052736

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© 2021 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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Scheme of significant changes in phytohormone contents. Upregulated (red arrows) or downregulated (blue arrows) hormone levels in shoot apices (A), leaves (L) and roots (R) under low light, cold at an optimal light intensity and combined cold and low light at different time points compared to control conditions. Left column contains either general response of all genotypes or WT (when specified). In the right column, responses of individual mutants distinct from the WT ones under the same stress conditions are shown. Thicker arrows indicate strong responses. ABA, abscisic acid; CK, cytokinin bases; IAA, indole-3-acetic acid; JA, jasmonic acid; JA-Ile, jasmonoyl-isoleucine; SA, salicylic acid.