Identification of Yeast Associated with the Planthopper, Perkinsiella saccharicida: Potential Applications for Fiji Leaf Gall Control |
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| Authors: | Grant L. Hughes Peter G. Allsopp Richard I. Webb Ryuichi Yamada Inaki Iturbe-Ormaetxe Stevens M. Brumbley Scott L. O’Neill |
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| Affiliation: | (1) School of Biological Sciences, The University of Queensland, Brisbane, QLD, 4072, Australia;(2) Present address: The W. Harry Feinstone Department of Molecular Microbiology and Immunology, Bloomberg School of Public Health and Malaria Research Institute, Johns Hopkins University, 615 North Wolfe Street, Baltimore, MD 21205, USA;(3) BSES Limited, P.O. Box 86, Indooroopilly, QLD, 4068, Australia;(4) Centre for Microscopy and Microanalysis, The University of Queensland, Brisbane, QLD, 4072, Australia;(5) Present address: Department of Metabolism & Aging, The Scripps Research Institute, 130 Scripps Way, Jupiter, FL 33458, USA;(6) Present address: School of Biological Sciences, Monash University, Melbourne, VIC, 3800, Australia;(7) Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD, 4072, Australia;(8) Present address: Department of Biological Sciences, University of North Texas, Denton, TX 76203-5017, USA; |
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| Abstract: | ![]()
Yeasts associate with numerous insects, and they can assist the metabolic processes within their hosts. Two distinct yeasts were identified by PCR within the planthopper Perkinsiella saccharicida, the vector of Fiji disease virus to sugarcane. The utility of both microbes for potential paratransgenic approaches to control Fiji leaf gall (FLG) was assessed. Phylogenetic analysis showed one of the microbes is related to yeast-like symbionts from the planthoppers: Laodelphax striatellus, Nilaparvata lugens, and Sogetella furcifera. The second yeast was a member of the Candida genus, a group that has been identified in beetles and recently described in planthoppers. Microscopy revealed the presence of yeast in the fat body of P. saccharicida. The Candida yeast was cultured, and transformation was accomplished by electroporation of Candida albicans codon optimized plasmids, designed to integrate into the genome via homologous recombination. Transgenic lines conferred resistance to the antibiotic nourseothricin and expression of green fluorescent protein was observed in a proportion of the yeast cells. Stably transformed yeast lines could not be isolated as the integrative plasmids presumably replicated within the yeast without integration into the genome. If stable transformation can be achieved, then this yeast may be useful as an agent for a paratransgenic control of FLG. |
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