ÁREAS DE
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PROJECTS
African cassava whitefly:
outbreak causes and sustainable solutions
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Since the 1990s, an unprecedented increase in cassava-whitefly, Bemisia tabaci, abundance has occurred in the cassava growing regions of East and Central Africa. The cassava whitefly is responsible for vectoring the plant viruses that have caused two on-going and devastating pandemics, Cassava Mosaic Disease (CMD) and Cassava Brown Streak Disease (CBSD). Estimates for resulting production losses in nine East and Central African countries have been put as high as 47% and the areas affected are continuing to expand, resulting in hunger, recurrent famines and annual losses of more than US$1.25 billion. The key driver for the spread of both pandemics is the significantly increased whitefly abundance, but the factor(s) responsible for this phenomenon remain undetermined. The final goal of this project is to increase food security in Uganda, Tanzania and Malawi by reducing the spread of whitefly-borne cassava-virus pandemics, carrying out research to understand factors that drive populations of the vector of these diseases, African cassava whitefly, to become super-abundant.
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Funding
Bill & Melinda Gates Foundation through a grant to the National Resources Institute (NRI, University of Greenwich, UK)
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Multitrophic interactions in the pathosystem geminivirus/crinivirus - Bemisia tabaci - tomato
Viral diseases constitute a highly relevant economic problem especially in intensively grown, vegetable crops, mainly due to a lack of effective and lasting control measures. Viral diseases transmitted by the whitefly Bemisia tabaci are becoming a significant emerging problem and a severe limiting factor for agricultural production in Spain and the majority of tropical, subtropical and Mediterranean countries. Due to its economical relevance, this project will focussed on two whitefly-transmitted viral diseases with great impact on tomato production, caused by begomoviruses (Tomato yellow leaf curl virus and related viruses) and criniviruses (Tomato chlorosis virus). The development of an insect-transmitted viral disease is the result of the interaction between the three implicated elements, the virus, the insect vector and the plant, which may be also modulated by other biotic and/or abiotic factors. The main objective of this project is to get a deeper knowledge on the essential aspects of this multritrophic system, through the study of the multiple interactions produced in the emerging diseases caused by whitefly-transmitted viruses. The project aims to: i) analyze the interactions between virus, insect and host plant, ii) study the impact that can have on epidemics the introduction in Spain of a bipartite begomovirus, and iii) initiate the study on the efficiency and the mechanisms behind the transmission through seeds of tomato begomoviruses and associated DNA satellites. A detailed knowledge of the mechanisms underlying these multitrophic processes is essential in order to design more successful and lasting control strategies against viral epidemics.
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Funding
Ministry of Economy, Industry and Competitiveness (MINECO, Spain), co-financed by the European Regional Development Fund (ERDF)
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PEOPLE
JESÚS NAVAS-CASTILLO jnavas@eelm.csic.es
PI
ELVIRA FIALLO-OLIVÉ efiallo@eelm. csic.es
Postdoctoral Researcher
Elvira received her PhD degree from University of Havana (Cuba). Her current research is focused on the study of whitefly-transmitted viruses that affect the most important vegetable crops and weeds, with emphasis on the molecular mechanisms of crinivirus transmission by whiteflies. She is also involved in the molecular and biological characterization of DNA satellites associated to begomoviruses. She has published 43 scientific papers in SCI journals, 12 popular science articles and 2 book chapters. Currently, she is the Chair of the Geminiviridae and Tolecusatellitidae Study Group of the International Committee on Taxonomy of Viruses (ICTV) and Editor of Archives of Virology.
ELISA NAVAS-HERMOSILLA
PhD student
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HAPPYNESS G. MOLLEL
PhD student
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REMEDIOS TOVAR
Laboratory Technician
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JOSÉ M. CID
Laboratory Technician
PUBLICATIONS
2018
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2017
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Landeo-Ríos Y, Navas-Castillo J, Moriones E, Cañizares MC. 2017. The heterologous expression of the p22 RNA silencing suppressor of the crinivirus Tomato chlorosis virus from TRV and PVX enhances disease severity but does not complement suppressor-defective mutant viruses. Viruses 9: 358
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Fiallo-Olivé E, Mohammed IU, Turaki AA, Muhammad A, Navas-Castillo J. 2017. A novel strain of the mastrevirus Chickpea chlorotic dwarf virus infecting papaya in Nigeria. Plant Disease 101: 1684
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Mar TB, Mendes IR, Lau D, Fiallo-Olivé E, Navas-Castillo J, Alves MS, Zerbini FM. 2017. Interaction between the New World begomovirus Euphorbia yellow mosaic virus and its associated alphasatellite: effects on infection and transmission by the whitefly Bemisia tabaci. Journal of General Virology 98: 1552-1562
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Fiallo-Olivé E, Chirinos DT, Geraud-Pouey F, Navas-Castillo J. 2017. Complete genome sequence of Jacquemontia yellow vein virus, a novel begomovirus infecting Jacquemontia tamnifolia in Venezuela. Archives of Virology 162: 2463-2466
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Maluta NKP, Garzo E, Moreno A, Navas-Castillo J, Fiallo-Olivé E, Lopes JRS, Fereres A. 2017. Stylet penetration activities of the whitefly Bemisia tabaci associated with inoculation of the crinivirus Tomato chlorosis virus. Journal of General Virology 98: 1515-1520
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Landeo-Ríos Y, Navas-Castillo J, Moriones E, Cañizares MC. 2017. Supresión viral del silenciamiento por RNA en plantas. Revista de Fitotecnia Mexicana 40: 181-197
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Mohammed HS, El Siddig MA, El Hussein AA, Navas-Castillo J, Fiallo-Olivé E. 2017. First report of Datura innoxia as a natural host of Watermelon chlorotic stunt virus in Sudan. Plant Disease 101: 1334
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Mohammed HS, El Siddig MA, El Hussein AA, Ibrahim FA, Navas-Castillo J, Fiallo-Olivé E. 2017. First report of Sweet potato leaf curl virus infecting sweet potato in Sudan. Plant Disease 101: 849
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Chang-Sidorchuk L, González-Álvarez H, Navas-Castillo J, Fiallo-Olivé E, Martínez-Zubiaur Y. 2017. Complete genome sequences of two novel bipartite begomoviruses infecting common bean in Cuba. Archives of Virology 162: 1431-1433
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Varsani A, Roumagnac P, Fuchs M, Navas-Castillo J, Moriones E, Idris A, Briddon RW, Rivera-Bustamante R, Zerbini FM, Martin DP. 2017. Capulavirus and Grablovirus: Two new genera in the family Geminiviridae. Archives of Virology 162: 1819–1831
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Mollel HG, Sseruwagi P, Ndunguru J, Alicai T, Colvin J, Navas-Castillo J, Fiallo-Olivé E. 2017. Desmodium mottle virus, the first legumovirus (genus Begomovirus) from East Africa. Archives of Virology 162: 1799–1803
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Zerbini FM, Briddon RW, Idris A, Martin DP, Moriones E, Navas-Castillo J, Rivera-Bustamante R, Roumagnac P, Varsani A, ICTV Report Consortium. 2017. ICTV Virus Taxonomy Profile: Geminiviridae. Journal of General Virology 98: 131-133
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Mollel HM, Ndunguru J, Sseruwagi P, Alicai T, Colvin J, Navas-Castillo J, Fiallo-Olivé E. 2017. A novel, East African, monopartite begomovirus-betasatellite complex that infects Vernonia amygdalina. Archives of Virology 162: 1079–1082
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2016
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Fortes IM, Sánchez-Campos S, Fiallo-Olivé E, Díaz-Pendón JA, Navas-Castillo J, Moriones E. 2016. A novel strain of tomato leaf curl New Delhi virus has spread to the Mediterranean Basin. Viruses 8: 307
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Sánchez-Campos S, Rodríguez-Negrete EA, Cruzado L, Grande-Pérez A, Bejarano ER, Navas-Castillo J, Moriones E. 2016. Tomato yellow leaf curl virus: No evidence for replication in the insect vector Bemisia tabaci. Scientific Reports 6: 30942
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Hassan I, Orílio AF, Fiallo-Olivé E, Briddon RW, Navas-Castillo J. 2016. Infectivity, effects on helper viruses and whitefly transmission of the deltasatellites associated with sweepoviruses (genus Begomovirus, family Geminiviridae). Scientific Reports 6: 30204
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Fiallo-Olivé E, Tovar R, Navas-Castillo J. 2016. Deciphering the biology of deltasatellites from the New World: maintenance by New World begomoviruses and whitefly-transmission. New Phytologist 212: 680–692
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Landeo-Ríos Y, Navas-Castillo J, Moriones E, Cañizares MC. 2016. The p22 RNA silencing suppressor of the crinivirus Tomato chlorosis virus is dispensable for local viral replication but important for counteracting an antiviral RDR6-mediated response during systemic infection. Viruses 8: 182
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Chang-Sidorchuk L, González H, Martínez-Zubiaur Y, Navas-Castillo J, Fiallo-Olivé E. 2016. First report of Rhynchosia golden mosaic Yucatan virus infecting soybean in Cuba. Journal of Plant Pathology 98: 174
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Pinto VB, Silva JP, Fiallo-Olivé E, Navas-Castillo J, Zerbini FM. 2016. Novel begomoviruses recovered from Pavonia sp. in Brazil. Archives of Virology 161: 735-739
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Lozano G, Trenado HP, Fiallo-Olivé E, Chirinos D, Geraud-Pouey F, Briddon RW, Navas-Castillo J. 2016. Characterization of non-coding DNA satellites associated with sweepoviruses (genus Begomovirus, Geminiviridae) – definition of a distinct class of begomovirus-associated satellites. Frontiers in Microbiology 7: 162
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Landeo-Rios Y, Navas-Castillo J, Moriones E, Cañizares MC. 2016. The p22 RNA silencing suppressor of the crinivirus Tomato chlorosis virus preferentially binds long dsRNAs preventing them from cleavage. Virology 488: 129-136
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2015
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Macedo MA, Michereff Filho M, Navas-Castillo J, Inoue-Nagata AK. 2015. Host range and whitefly transmission efficiency of Tomato severe rugose virus and Tomato golden vein virus in tomato plants. Tropical Plant Pathology 40: 405-409
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Fiallo-Olivé E, Zerbini FM, Navas-Castillo J. 2015. Complete nucleotide sequences of two new begomoviruses infecting the wild malvaceous plant Melochia sp. in Brazil. Archives of Virology 160: 3161-3164
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Landeo-Ríos Y, Navas-Castillo J, Moriones E, Cañizares MC. 2015. Genetic diversity and silencing suppression activity of the p22 protein of Tomato chlorosis virus. Virus Genes 51: 283-289
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Brown JK, Zerbini FM, Navas-Castillo J, Moriones E, Ramos-Sobrinho R, Silva JCF, Fiallo-Olivé E, Briddon RW, Hernández-Zepeda C, Idris A, Malathi VG, Martin DP, Rivera-Bustamante R, Ueda S, Varsani A. 2015. Revision of Begomovirus taxonomy based on pairwise sequence comparisons. Archives of Virology 160: 1593–1619
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Barbosa LF, Yuki VA, Marubayashi JM, De Marchi BR, Perini FL, Pavan MA, de Barros DR, Ghanim M, Moriones E, Navas-Castillo J, Krause-Sakate R. 2015. First report of Bemisia tabaci Mediterranean (Q biotype) species in Brazil. Pest Management Science 71: 501–504
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Cañizares MC, Rosas-Díaz T, Rodríguez-Negrete E, Hogenhout SA, Bedford ID, Bejarano ER, Navas-Castillo J, Moriones E. 2015. Arabidopsis thaliana, an experimental host to study virus-host interactions of tomato yellow leaf curl disease-associated begomoviruses. Plant Pathology 64: 265–271
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2014
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Rodriguez-Negrete EA, Sánchez-Campos S, Cañizares MC, Navas-Castillo J, Moriones E, Bejarano ER, Grande-Pérez A. 2014. A sensitive method for the quantification of virion-sense and complementary-sense DNA strands of circular single-stranded DNA viruses. Scientific Reports 4: 6438
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Orílio AF, Fortes IM, Navas-Castillo J. 2014. Infectious cDNA clones of the crinivirus Tomato chlorosis virus are competent for systemic plant infection and whitefly-transmission. Virology 464-465: 365-374
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Navas-Castillo J, López-Moya JJ, Aranda MA. 2014. Whitefly-transmitted RNA viruses that affect intensive vegetable production. Annals of Applied Biology 165: 155-171
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Varsani A, Navas-Castillo J, Moriones E, Hernández-Zepeda C, Idris A, Brown JK, Zerbini FM, Martin DP. 2014. Establishment of three new genera in the family Geminiviridae: Becurtovirus, Eragrovirus and Turncurtovirus. Archives of Virology 159: 2193-2203
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Barbosa LF, Marubayashi JM, De Marchi BR, Yuki VA, Pavan MA, Moriones E, Navas-Castillo J, Krause-Sakate R. 2014. Indigenous American species of the Bemisia tabaci complex are still widespread in the Americas. Pest Management Science 70: 1440–1445
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Fiallo-Olivé E, Espino AI, Botella-Guillén M, Gómez-González E, Reyes-Carlos JA, Navas-Castillo J. 2014. Tobacco: a new natural host of Tomato chlorosis virus in Spain. Plant Disease 98: 1162
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Varsani A, Martin DP, Navas-Castillo J, Moriones E, Hernández-Zepeda C, Idris A, Zerbini FM, Brown JK. 2014. Revisiting the classification of curtoviruses based on genome-wide pairwise identity. Archives of Virology 159: 1873–1882
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Fiallo-Olivé E, Chirinos DT, Geraud-Pouey F, Moriones E, Navas-Castillo J. 2014. Complete genome sequence of Jacquemontia yellow mosaic virus, a novel begomovirus from Venezuela related to other New World bipartite begomoviruses infecting Convolvulaceae. Archives of Virology 159: 1857–1860
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Juárez M, Tovar R, Fiallo-Olivé E, Aranda MA, Gosálvez B, Castillo P, Moriones E, Navas-Castillo J. 2014. First detection of Tomato leaf curl New Delhi virus infecting zucchini in Spain. Plant Disease 98: 857
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Fiallo-Olivé E, Katis NI, Navas-Castillo J. 2014. First report of Sweet potato leaf curl virus on blue morning glory in Greece. Plant Disease 98: 700
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Martínez-Ayala A, Sánchez-Campos S, Cáceres F, Aragón-Caballero L, Navas-Castillo J, Moriones E. 2014. Characterization and genetic diversity of pepper leafroll virus, a new bipartitebegomovirus infecting pepper, bean and tomato in Peru. Annals of Applied Biology 164: 62-72
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CONTACT
Jesús Navas-Castillo
Instituto de Hortofruticultura Subtropical y Mediterránea "La Mayora"
(IHSM-UMA-CSIC)
Avenida Dr. Wienberg s/n
29750 Algarrobo-Costa (Málaga)
SPAIN
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Email: jnavas@eelm.csic.es
Tel: (+34) 747 75 56 00
© 2018 para Jesús Navas-Castillo. Creado con Wix.com