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flp gene disruption in a parasitic nematode reveals motor dysfunction and unusual neuronal sensitivity to RNA interference
Author(s) -
Kimber Michael J.,
McKinney Susan,
McMaster Steven,
Day Tim A.,
Fleming Colin C.,
Maule Aaron G.
Publication year - 2007
Publication title -
the faseb journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.709
H-Index - 277
eISSN - 1530-6860
pISSN - 0892-6638
DOI - 10.1096/fj.06-7343com
Subject(s) - rna interference , biology , caenorhabditis elegans , gene silencing , rna silencing , gene , globodera pallida , transgene , nematode , genetics , function (biology) , phenotype , microbiology and biotechnology , rna , solanaceae , ecology
The potato cyst nematode Globodera pallida is a serious pest of potato crops. Nematode FMRFamide‐like peptides (FLPs) are one of the most diverse neuropeptide families known, and modulate sensory and motor functions. As neuromuscular function is a well‐established target for parasite control, parasitic nematode FLP signaling has significant potential in novel control strategies. In the absence of transgenic parasitic nematodes and the reported ineffectiveness of neuronal gene RNAi in Caenorhabditis elegans , nothing is known about flp function in nematode parasites. In attempts to evaluate flp function in G. pallida , we have discovered that, unlike in C. elegans , these genes are readily susceptible to RNAi. Silencing any of the five characterized G. pallida flp genes ( Gp ‐ flp‐1, ‐6, ‐12, ‐14 , or ‐18) incurred distinct aberrant behavioral phenotypes consistent with key roles in motor function. Further delineation of these effects revealed that double‐stranded RNA exposure time (≥18 h) and concentration (≥0.1 μg/ml) were critical to the observed effects, which were reversible. G. pallida flp genes are essential to coordinated locomo‐tory activities, do not display redundancy, and are susceptible to RNAi, paving the way for the investigation of RNAi‐mediated flp gene silencing as a novel plant parasite control strategy.—Kimber, M. J., McKinney, S., McMaster, S., Day, T. A., Fleming, C. C., Maule, A. G. flp gene disruption in a parasitic nematode reveals motor dysfunction and unusual neuronal sensitivity to RNA interference. FASEB J. 21, 1233–1243 (2007)