Identificación de posibles factores de Myzus persicae implicados en la transmisión del virus del grabado del tabaco (TEV) y estrategias para interferir su expresión

作者: María Urizarna España

DOI:

关键词: Molecular biologySpecific antiserumPotyvirusViral transmissionBiologyCoat proteinMolecular interactionsTobacco rattle virusTobacco etch virusMyzus persicae

摘要: En esta tesis se aborda la identificacion de factores del pulgon Myzus persicae que podrian participar en el proceso transmision potyvirus grabado tabaco, Tobacco etch virus (TEV), y explora the posibilidad alterar expresion genes particulares insecto vector como una manera dificultar o impedir diseminacion este virus. Se conoce intervencion un factor auxiliar origen viral, proteina HCPro, potyvirus, actuando puente molecular reversible para retener las particulas aparato bucal pulgon. La HCPro interacciona con capside CP, previsiblemente receptores especificos Despues analizar conjunto productos capaces interaccionar TEV (interactoma), han considerado dos proteinas candidatas. primera, MpRPS2, presenta homologia ribosomales, segunda MpRR1Cp2 es cuticular. interaccion entre MpRPS2 ha verificado ensayos Far Western Blot sistema doble hibrido levaduras. Los intentos confirmar localizacion estiletes diseccionados no fueron concluyentes, aunque antisuero especifico si podido detectar presencia cuticula mudas aisladas. Para validar participacion estos hipoteticos explorado estrategias interferencia genica pulgones. Tras sus niveles durante a lo largo desarrollo, consideraron sistemas inducir respuestas silenciamiento (RNAi) basados alimentacion. El uso dietas artificiales suplementadas dobles cadenas RNA especificas sintetizadas in vitro produjo general reducciones acumulacion mensajeros, mientras alimentacion pulgones sobre plantas infectadas viral basado cascabeleo rattle (TRV), contiene fragmento secuencia gen, tuvo efecto mas pronunciado. Las observadas variables los genes, fuerte caso gen alimentados tabaco variante TRV incorporaba gen. Este RNAi nos permitido ensayar reduccion candidatos seleccionados experimentos TEV. Estos resultados ayudar mejorar comprension interacciones moleculares necesarias transmision, identificar participan proceso, eventualmente usarse diseno innovadoras bloqueo basadas dichos factores. SUMMARY This thesis addresses identification of aphid factors that could be involved transmission process and explores possibility altering expression specific insect as way to prevent spread. An auxiliary origin, protein is known participate transmission. acts bridge retaining particles mouthparts. interacts with coat protein, predictably receptors After analyzing set products able interact (interactome), we have considered two candidate proteins. The first one shows homology ribosomal proteins, second one, cuticular protein. interaction between has been verified assays yeast two-hybrids. Attempts confirm localization this dissected stylets were not conclusive, although using an antiserum it possible detect presence cuticle isolated moults. To involvement these hypothetical process, strategies interference explored aphids. their levels along development, systems based on feeding induce silencing responses (RNAi). use artificial diets supplemented synthesized dsRNA did produced reductions mRNA accumulation, while aphids fed plants infected which contains fragment targeted showed more clear effects. observed rather variable considered, stronger effect case tobacco variant incorporates gene. system allowed us test knocking down selected candidates experiments. Our results might help improve our understanding interactions during transmission, identify eventually serve design new interfere dissemination specifically interfering expression.

参考文章(212)
Angelika Waltermann, Edgar Maiss, Detection of 6K1 as a mature protein of 6 kDa in plum pox virus-infected Nicotiana benthamiana Journal of General Virology. ,vol. 87, pp. 2381- 2386 ,(2006) , 10.1099/VIR.0.81873-0
Jingdong Liu, Thomas E. Wilson, Jeffrey Milbrandt, Mark Johnston, Identifying DNA-Binding Sites and Analyzing DNA-Binding Domains Using a Yeast Selection System Methods. ,vol. 5, pp. 125- 137 ,(1993) , 10.1006/METH.1993.1017
Sanford D. Eigenbrode, Hongjian Ding, Patrick Shiel, Philip H. Berger, Volatiles from potato plants infected with potato leafroll virus attract and arrest the virus vector, Myzus persicae (Homoptera: Aphididae) Proceedings of The Royal Society B: Biological Sciences. ,vol. 269, pp. 455- 460 ,(2002) , 10.1098/RSPB.2001.1909
César Llave, Belén Martínez, J. R. Díaz-Ruíz, D. López-Abella, Helper component mutations in nonconserved residues associated with aphid transmission efficiency of a pepper isolate of potato virus y. Phytopathology. ,vol. 89, pp. 1176- 1181 ,(1999) , 10.1094/PHYTO.1999.89.12.1176
R. Jürgen Dohmen, Alexander W. M. Strasser, Cornelia B. Höner, Cornelis P. Hollenberg, An efficient transformation procedure enabling long term storage of competent cells of various yeast genera Yeast. ,vol. 7, pp. 691- 692 ,(1991) , 10.1002/YEA.320070704
A. F. S. Mello, A. J. Clark, K. L. Perry, Capsid protein of cowpea chlorotic mottle virus is a determinant for vector transmission by a beetle Journal of General Virology. ,vol. 91, pp. 545- 551 ,(2010) , 10.1099/VIR.0.016402-0
B Salvador, MO Delgadillo, P Sáenz, JA García, C Simón-Mateo, None, Identification of Plum pox virus pathogenicity determinants in herbaceous and woody hosts. Molecular Plant-microbe Interactions. ,vol. 21, pp. 20- 29 ,(2008) , 10.1094/MPMI-21-1-0020
C. A. Stafford, G. P. Walker, D. E. Ullman, Infection with a plant virus modifies vector feeding behavior. Proceedings of the National Academy of Sciences of the United States of America. ,vol. 108, pp. 9350- 9355 ,(2011) , 10.1073/PNAS.1100773108