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. 2019 Aug 15;9:11898. doi: 10.1038/s41598-019-47357-4

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© The Author(s) 2019

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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Ferritin satisfies the criteria as a good target gene for RNAi yet Mp_FeHC_dsRNA fed to M. persicae in artificial diet does not affect target gene activity or aphid number. (a) A histogram bar representing the number of 21mers matches to the 495nt of the Mp_FeHC gene is shown for each insect around the perimeter of the species tree cladogram (drawn based on Cytochrome oxidase I). (b) Dietary iron deficiency reduces aphid size (Student t-test, replicates = 3, p = 0.0001). Asterisks indicate significant differences in M. persicae size. (c) Mp_FeHC_dsRNA does not significantly affect newly born aphid numbers after 11 days of feeding relative to treatment with Dm_vATPase_dsRNA from Drosophila melanogaster. The error bars represent the standard error of the mean.