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. 2017 Jun 9;7:3193. doi: 10.1038/s41598-017-03506-1

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© The Author(s) 2017

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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An AKIN10 elicitor DCMU delays EIN3-dependent ethylene inducible leaf senescence. (a,b) Anthocyanin accumulation was observed (a) and measured (b) in detached mature leaves in combination of sucrose and DCMU under light (n = 25). (c,d) Leaf degreening (c) was monitored and chlorophyll contents (d) were measured with detached mature leaves in combination of ACC and DCMU under darkness (n = 25). Values are means of triplicates with standard error bars (*p < 0.001; **p < 0.01; ***p < 0.05). (e) Expression of marker genes for senescence and ethylene signaling was monitored using quantitative RT-qPCR. EIF4a served as a control. (f) Leaf degreening was observed for Col-0, ethylene insensitive ein3-1 and ethylene oversensitive EIN3-expressing transgenic lines (EIN3) in the absence and presence of DCMU. (g) Fluorescence signals were observed in root tips of EIN3-GFP expressing transgenic Col-0 in the presence of ACC and/or DCMU under confocal microscopy. (h) Fluorescence signals were observed in root tips of transgenic lines expressing EIN3-GFP and AKIN10 ^WT or AKIN10 ^IN in the presence of ACC under confocal microscopy. All experiments were repeated with consistent results. Representative results were shown.