Abstract
The sycamore lace bug, Corythucha ciliata (Say) is a highly invasive pest insect that feeds on sycamore trees (Platanus spp.) worldwide. The interaction between Platanus species and this insect pest has not yet been studied at the molecular level. Therefore, a recent study was conducted to compare the gene expression and metabolite profiles of Platanus acerifolia leaves in response to C. ciliata feeding damage after 24 and 48 h. We employed high throughput RNA sequencing (RNA- seq) to identify a total of 2,828 significantly differentially expressed genes (DEGs) after C. ciliata feeding. In addition, 303 unigenes were found to be up-regulated at both time points. Moreover, Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analysis showed that monoterpenoid biosynthesis, the linoleic acid metabolism pathway, and alpha- linolenic acid metabolism were the most prominent pathways among the DEGs. Further analysis of the metabolite profiles showed that nine metabolites were significantly different before and after C. ciliata damage. In addition, we analyzed DEGs detected in the P. acerifolia and C. ciliata interaction using Mapman. The terpene synthase gene family was also identified. We suggest that the results obtained from DEGs and metabolite analysis can provide important information for the identification of genes involved in the P. acerifolia–C. ciliata interaction, which might be necessary for controlling C. ciliata efficiently.
Highlights
Platanus L. is an important genus of large trees commonly known as sycamore or plane trees
The most important relationship between P. acerifolia and C. ciliata is that P. acerifolia is the most widely planted Platanus species in China [3]
The sequencing data is stored in the NCBI Sequence Read Archive (SRA, http://www.ncbi.nlm.nih.gov/Traces/sra); under BioProject ID number PRJNA484863 and accession numbers SRR8631807 to SRR8631818
Summary
Platanus L. is an important genus of large trees commonly known as sycamore or plane trees. Platanus species are widely planted all over China as shade trees due to their large spreading crown, and for their rapid growth and pruning resistance. The sycamore lace bug, Corythucha ciliata (Say, 1832) (Hemiptera: Tingidae), which is native to the central and eastern parts of North America, was subsequently introduced into Europe and Asia [1,2]. This pest has a strong ability to spread and is considered to be a new alien invasive insect pest in China [2]. C. ciliata infestation can cause growth disruption, weakness, and even death in
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