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. 2018 Jul 4;8:10114. doi: 10.1038/s41598-018-28413-x

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© The Author(s) 2018

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 license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license 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 license, visit http://creativecommons.org/licenses/by/4.0/.

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Working model of SND1, negatively regulating ABI4 in the ABA biosynthesis pathway. SND1 is a master switch for the formation of secondary cell walls through the induction of Myb46 under normal conditions. For a strong and successful plant growth, SND1 directly binds to the ABI4 promoter and negatively regulates the expression of the ABI4 transcript, inhibiting of the ABA biosynthesis pathway. SND1 is induced by osmotic stress and inhibits continuous ABA production under these conditions.