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. 2021 Mar 13;22(6):2936. doi: 10.3390/ijms22062936

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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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Expression of genes related to ABA and drought stress signaling cascades. (A) ABA-dependent signaling network of 38 key genes involved in drought stress response. Genes in the green boxes are positive regulators, while genes in the red boxes are negative regulators of ABA signaling. (B) Heatmap showing the expression fold change of 38 key genes involved in the ABA-dependent drought stress signaling network in Arabidopsis thaliana as determined by RNA-seq in the WT, OX5-4, and atbbd1 plants under drought stress conditions. The relative fold change was calculated and normalized with the RPKM value of WT plants without drought treatment. The RPKM value of WT at 0 h was set to 1.