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Open AccessArticle

Transcriptomic Analysis Following Artificial Selection for Grasshopper Size

1
State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
2
Department of Agriculture, The University of Swabi, Anbar 23561, Khyber Pakhtunkhwa, Pakistan
3
School of Chemistry, Biology and Materials Science, East China University of Technology, Nanchang-330013, China
4
School of Biological Sciences, Illinois State University, Normal, IL 61761, USA
*
Authors to whom correspondence should be addressed.
These authors contributed equally to this study.
Insects 2020, 11(3), 176; https://doi.org/10.3390/insects11030176 (registering DOI)
Received: 25 December 2019 / Revised: 25 February 2020 / Accepted: 7 March 2020 / Published: 10 March 2020
We analyzed the transcriptomes of Romalea microptera grasshoppers after 8 years of artificial selection for either long or short thoraces. Evolution proceeded rapidly during the experiment, with a 13.3% increase and a 32.2% decrease in mean pronotum lengths (sexes combined) in the up- and down-selected colonies, respectively, after only 11 generations. At least 16 additional traits also diverged between the two colonies during the selection experiment. Transcriptomic analysis identified 693 differentially expressed genes, with 386 upregulated and 307 downregulated (55.7% vs. 44.3%), including cellular process, metabolic process, binding, general function prediction only, and signal transduction mechanisms. Many of the differentially expressed genes (DEGs) are known to influence animal body size. View Full-Text
Keywords: transcriptome; PI3K-Akt; phenylalanine metabolism; Mtor; ECM–receptor interaction; DEGs; Romalea microptera; body size; rapid evolution; genetic correlation transcriptome; PI3K-Akt; phenylalanine metabolism; Mtor; ECM–receptor interaction; DEGs; Romalea microptera; body size; rapid evolution; genetic correlation
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MDPI and ACS Style

Li, S.; Cui, D.-N.; Ullah, H.; Chen, J.; Liu, S.-F.; Whitman, D.W.; Zhang, Z.-H.; Tu, X.-B. Transcriptomic Analysis Following Artificial Selection for Grasshopper Size. Insects 2020, 11, 176.

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