Microarray detection and qPCR screening of potential biomarkers of Folsomia candida (Collembola: Isotomidae) exposed to Bt proteins (Cry1Ab and Cry1Ac)

Yiyang Yuan, Paul Henning Krogh, Xue Bai, Dick Roelofs, Fajun Chen, Keyan Zhu-Salzman, Yuyong Liang, Yucheng Sun, Feng Ge

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Abstract

The impact of Bt proteins on non-target arthropods is less understood than their effects on target organisms where the mechanism of toxic action is known. Here, we report the effects of two Bt proteins, Cry1Ab and Cry1Ac, on gene expression in the non-target collembolan, Folsomia candida. A customized microarray was used to study gene expression in F. candida specimens that were exposed to Cry1Ab and Cry1Ac. All selected transcripts were subsequently confirmed by qPCR. Eleven transcripts were finally verified, and three of them were annotated. The responses of all eleven transcripts were tested in specimens for both Cry1Ab and Cry1Ac at a series of concentrations. These transcripts were separated into two and three groups for Cry1Ab and Cry1Ac, respectively, depend on their expression levels. However, those eleven transcripts did not respond to the Bt proteins in Bt-rice residues.
OriginalsprogEngelsk
TidsskriftEnvironmental Pollution
Vol/bind184
Sider (fra-til)170-178
ISSN0269-7491
DOI
StatusUdgivet - 2014

Emneord

  • Non-target organism Bt-rice Collembola Biological trait

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