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. 2018 Nov 1;5:68. doi: 10.1038/s41438-018-0065-7

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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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Fig. 1 — The academic (a) and public (b) interests in ‘‘LED horticulture’’, ‘‘horticulture science’’, ‘‘food security’’, and ‘‘LED grow lights’’ within the period of January 2004 and February 2017. The respective search terms were used in the survey of public interest using Google Trends (https://trends.google.com/trends/) and to retrieve scholarly articles indexed in the PubMed database. The number of articles and Google Trend hits were normalized against the highest values of the respective search terms within the period between January 2004 and February 2017