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United States Department of Agriculture

Agricultural Research Service

Related Topics

Raymond K Yokomi (Ray)
Crop Diseases, Pests and Genetics
Research Plant Pathologist

Phone: (559) 596-2990
Fax: (559) 596-2992
9611 S. RIVERBEND AVE.
PARLIER, CA, 93648

Projects
CHARACTERIZATION, EPIDEMIOLOGY AND MANAGEMENT STRATEGIES OF CITRUS TRISTEZA VIRUS AND SPIROPLASMA CITRI ON CITRUS IN CALIFORNIA
Appropriated (D)
  Accession Number: 422988
Development of a TaqMan Array Card for Multiplex Detection of Citrus Pathogens by Real-Time PCR
Trust (T)
  Accession Number: 424504

Publications (Clicking on the reprint icon Reprint Icon will take you to the publication reprint.)
Molecular analysis of Citrus tristeza virus from cross-protected citrus trees after 20 years of natural challenge and evaluation in Peru. - (Proceedings) - (15-Feb-14)
Next generation sequencing of citrus affected by graft-transmissible diseases of unknown etiology leads to discovery of two novel viruses - (Peer Reviewed Journal) - (13-Dec-13)
Past and future of a century old Citrus Tristeza Virus collection: A California Citrus Germplasm Tale - (Peer Reviewed Journal)
Wang, J., Bozan, O., Kwon, S., Rucker, T., Yokomi, R.K., Lee, R.F., Folimonova, S., Greer, G., Krueger, R., Bash, J., Vidalakis, G. 2013. Past and future of a century old Citrus Tristeza Virus collection: A California Citrus Germplasm Tale. Frontiers in Microbiology. Available: http://dx.doi.org/10.3389/fmicb.2013.00366.
Rapid differentiation of citrus Hop stunt viroid variants by use of real-time RT-PCR and high resolution melting analysis - (Peer Reviewed Journal)
Loconsole, G., Onelge, N., Yokomi, R.K., Abou-Kubaa, R., Savino, V., Saponari, M. 2013. Rapid differentiation of citrus Hop stunt viroid variants by use of real-time RT-PCR and high resolution melting analysis. Molecular and Cellular Probes. 27:221-229.
Validation of high-throughput real time polymerase chain reaction assays for simultaneous detection of invasive citrus pathogens - (Peer Reviewed Journal)
Saponari, M., Loconsole, G., Liao, H., Bo, J., Savino, V., Yokomi, R.K. 2013. Validation of high-throughput real time polymerase chain reaction assays for simultaneous detection of invasive citrus pathogens. Journal of Virological Methods. 193:478-486.
Prophages in “Candidatus Liberibacter asiaticus” and Spiroplasma citri - (Abstract Only)
Chen, J., Deng, X., Wang, X., Yokomi, R.K. 2013. Prophages in “Candidatus Liberibacter asiaticus” and Spiroplasma citri. In: Book of Abstracts, 19th Conference of International Organization of Citrus Virologists. p.78.
Occurrence, sequence polymorphism and population structure of Circulifer tenellus virus 1 in a field population of the beet leafhopper - (Peer Reviewed Journal)
Spear, A., Yokomi, R.K., French, R.C., Stenger, D.C. 2013. Occurrence, sequence polymorphism and population structure of Circulifer tenellus virus 1 in a field population of the beet leafhopper. Virus Research. 176:307-311.
Molecular diversity of Citrus tristeza virus in California - (Abstract Only)
Wang, J., Yokomi, R.K., Lee, R.F., Folimonova, S., Vidalakis, G. 2013. Molecular diversity of Citrus tristeza virus in California. Phytopathology. 103:S2.156.
Sensitive detection of Spiroplasma citri by targeting prophage sequences - (Abstract Only)
Wang, X., Yokomi, R.K., Chen, J. 2013. Sensitive detection of Spiroplasma citri by targeting prophage sequences. Phytopathology. 103:S2.157.
Small RNA profiling reveals phosphorus deficiency as a contributing factor in symptom expression for Citrus Huanglongbing Disease - (Peer Reviewed Journal)
Zhao, H., Sun, R., Albrecht, U., Padmanabhan, C., Wang, A., Coffey, M.D., Girke, T., Wang, Z., Close, T.J., Roose, M., Yokomi, R.K., Folimonova, S., Vidalakis, G., Rouse, R., Bowman, K.D., Jin, H. 2013. Small RNA profiling reveals phosphorus deficiency as a contributing factor in symptom expression for Citrus Huanglongbing Disease. Molecular Plant. 6(2):301-310.
Past and future of a century old Citrus Tristeza virus collection: A California citrus germplasm tale - (Abstract Only)
Wang, J., Orhan, B., Kwon, S., Rucker, T., Yokomi, R.K., Lee, R.F., Folimonova, S.Y., Greer, G., Krueger, R., Bash, J., Vidalakis, G. 2013. Past and future of a century old Citrus Tristeza virus collection: A California citrus germplasm tale. Frontiers in Microbiology. Available:http://www.dx.doi.org/10.3389/fmicb.2013.00366.
Presence of two host races of Aphis gossypii Glover (Hemiptera: Aphididae) collected in Turkey - (Peer Reviewed Journal)
Satar, S., Kersting, U., Yokomi, R.K. 2012. Presence of two host races of Aphis gossypii Glover (Hemiptera: Aphididae) collected in Turkey. Annals of Applied Biology. 162:41-49.
Deep sequencing of citrus affected by graft-transmissible diseases of unknown etiology leads to discovery of two novel viruses. - (Abstract Only)
Loconsole, G., Giampetruzzi, A., Saldarelli, P., Yokomi, R.K., Onelge, N., Saponari, M. 2012. Deep sequencing of citrus affected by graft-transmissible diseases of unknown etiology leads to discovery of two novel viruses. International Citrus Congress Proceedings. S14011, p. 237.
Molecular diversity of Citrus tristeza virus (CTV) strains collected over the past 50 years and maintained in CTV collections in California - (Abstract Only)
Wang, J., Bozan, O., Kwon, S., Rucker, T., Thomas, C., Yokomi, R.K., Lee, R.F., Folimonova, S., Vidalakis, G. 2012. Molecular diversity of Citrus tristeza virus (CTV) strains collected over the past 50 years and maintained in CTV collections in California. International Citrus Congress Proceedings. S14P06, p.240.
Identification and characterization of Citrus yellow vein clearing virus, a putative new member of the genus Mandarivirus infecting Citrus spp. - (Peer Reviewed Journal)
Loconsole, G., Onelge, N., Potere, O., Giampetruzzi, A., Bozan, O., Satar, S., De Stradis, A., Savino, V., Yokomi, R.K., Saponari, M. 2012. Identification and characterization of Citrus yellow vein clearing virus, a putative new member of the genus Mandarivirus infecting Citrus spp. Phytopathology. 102: 1168-1175.
Genetic variation of Spiroplasma citri populations in California revealed by two genomic loci - (Abstract Only)
Wang, X., Doddapaneni, H., Chen, J., Yokomi, R.K. 2012. Genetic variation of Spiroplasma citri populations in California revealed by two genomic loci . International Citrus Congress Proceedings. S12P35, p. 213.
Investigation of seedling yellows cross protection by mild components of the Dekopon strain of Citrus tristeza virus - (Popular Publication)
Yokomi, R.K., Saponari, M., Doddapaneni, H. 2011. Investigation of seedling yellows cross protection by mild components of the Dekopon strain of Citrus tristeza virus. Citrograph. 3(4):38-43.
Citrus tristeza virus-aphid interactions - (Book / Chapter) - (18-Jun-12)
Development of a High Throughput Assay for Rapid and Accurate 10-Plex Detection of Citrus Pathogens - (Abstract Only)
Wang, J., Vidalakis, G., Lee, R., Yokomi, R.K. 2012. Development of a High Throughput Assay for Rapid and Accurate 10-Plex Detection of Citrus Pathogens. Phytopathology. 102:S4.131.
Estimation of incidence and spatial temporal distribution of Citrus Stubborn disease - (Abstract Only)
Yokomi, R.K., Sisterson, M.S. 2012. Estimation of incidence and spatial temporal distribution of Citrus Stubborn disease. Phytopathology. 102:S4:141.
Genetic differentiation and biology of Citrus Tristeza virus populations spreading in California - (Peer Reviewed Journal)
Yokomi, R.K., Saponari, M., Metheny, P., Vidalakis, G. 2012. Genetic differentiation and biology of Citrus Tristeza virus populations spreading in California. International Organization of Citrus Virologists Proceedings. Available: http://www.ivia.es/iocv/archivos/Proceedings_XVIII_Conference/Yokomi_et_al.pdf.
Overview of Current Quarantines and Management of Citrus Pests in California - (Proceedings)
Yokomi, R.K. 2012. Overview of Current Quarantines and Management of Citrus Pests in California. In: Proceedings of the American Society of Agronomy. 2012 Conference Proceedings, February 7-8, 2012, Visalia, California. p. 98-105. Available: http://calasa.ucdavis.edu/files/134945.pdf.
Validation and comparison of a hierarchal sampling plan for estimating incidence of citrus stubborn disease - (Peer Reviewed Journal)
Yokomi, R.K., Sisterson, M.S. 2012. Validation and comparison of a hierarchal sampling plan for estimating incidence of citrus stubborn disease. International Organization of Citrus Virologists Proceedings. Available: http://www.ivia.es/iocv/archivos/Proceedings_XVIII_Conference/Yokomi_and_Sisterson.pdf.
Genetic differentiation and biology of Citrus tristeza virus populations spreading in California - (Peer Reviewed Journal)
Yokomi, R., Saponari, M., Metheney, P., Vidalakis, G. 2011. Genetic differentiation and biology of Citrus tristeza virus populations spreading in California. In: Proceedings of the 18th Conference of the International Organizaion of Citrus Virologists. Available:http://iocv.org/proceedings/eighteen/Yokomi_et_al.pdf.
Calculation of diagnostic parameters of advanced serological and molecular tissue-print methods for detection of Citrus tristeza virus. A model for other plant pathogens - (Peer Reviewed Journal)
Vidal, E., Yokomi, R.K., Moreno, A., Bertolini, E., Cambra, M. 2012. Calculation of diagnostic parameters of advanced serological and molecular tissue-print methods for detection of Citrus tristeza virus. A model for other plant pathogens. Phytopathology. 102:114-121.
Etiology, background, worldwide situation and control of Citrus Tristeza virus and its vectors - (Proceedings)
Yokomi, R.K. 2011. Etiology, background, worldwide situation and control of Citrus Tristeza virus and its vectors. Symposium Proceedings. available: http://www.senasica.gob.mx/includes/asp/download.asp?iddocumento=24041&idu
Citrus stubborn disease (CSD) - (Other)
Yokomi, R.K. 2013. Citrus stubborn disease (CSD). Review Article. available: http://www.idtools.org/id/citrus/diseases
Citrus-CTV molecular interactions: What is the host side of the story? - (Abstract Only)
Doddapaneni, H., Saponari, M., Giampetruzzi, A., Loconsole, G., Saldarelli, P., Yokomi, R.K. 2011. Citrus-CTV molecular interactions: What is the host side of the story?. Phytopathology. 101:S43.
Molecular analysis among MCA13-reactive isolates reveals a rapid strategy for assessment of Citrus tristeza virus severity - (Peer Reviewed Journal)
Yokomi, R.K., Saponari, M. 2011. Molecular analysis among MCA13-reactive isolates reveals a rapid strategy for assessment of Citrus tristeza virus severity. Acta Horticulturae. 892:251-256.
Current status of Citrus tristeza virus in Central California - (Abstract Only)
Yokomi, R.K., Metheney, P., Grafton-Cardwell, E., Stewart-Leslie, J. 2010. Current status of Citrus tristeza virus in Central California [abstract]. Conference of International Organization of Citrus Virologists. 31:s23.
Genetic differentiation and biology of Citrus tristeza virus populations spreading in eradicative and non-eradicative areas of California - (Abstract Only)
Yokomi, R.K., Saponari, M., Metheney, P., Vidalakis, G. 2010. Genetic differentiation and biology of Citrus tristeza virus populations spreading in eradicative and non-eradicative areas of California [abstract]. Conference of International Organization of Citrus Virologists. 31:s27.
Estimation of Incidence and Spatial Temporal Distribution of Citrus Stubborn Disease - (Abstract Only)
Yokomi, R.K., Sisterson, M.S. 2010. Estimation of Incidence and Spatial Temporal Distribution of Citrus Stubborn Disease [abstract]. International Organization of Citrus Virologists Proceedings. 31:s53.
Tissue-print real-time RT-PCR for accurate detection of Citrus tristeza virus. Validation and comparison with Tissue print-ELISA. - (Abstract Only)
Vidal, E., Yokomi, R.K., Moreno, A., Bertolini, E., Cambra, M. 2010. Tissue-print real-time RT-PCR for accurate detection of Citrus tristeza virus. Validation and comparison with Tissue print-ELISA [abstract]. International Organization of Citrus Virologists Proceedings. 31:s97.
Studies of Seedling Yellows Amelioration of Citrus tristeza virus Strain Mixtures to Elucidate Mechanisms of Cross Protection - (Abstract Only)
Saponari, M., Doddapaneni, H., Loconsole, G., Giampetruzzi, A., Saldarelli, P., Yokomi, R.K. 2010. Studies of Seedling Yellows Amelioration of Citrus tristeza virus Strain Mixtures to Elucidate Mechanisms of Cross Protection [abstract]. International Organization of Citrus Virologists Proceedings. 31:s93.
Profiling of the small RNA populations derived from sour orange seedlings cross-protected against seedling yellows strains of Citrus tristeza virus - (Abstract Only)
Saponari, M., Doddapaneni, H., Loconsole, G., Giampetruzzi, A., Saldarelli, P., Yokomi, R.K. 2011. Profiling of the small RNA populations derived from sour orange seedlings cross-protected against seedling yellows strains of Citrus tristeza virus. Journal of Plant Pathology. 92(4):S4.71-105.
Global Analyses of Small Interfering RNAs from Sour Orange seedlings Infected with Different Citrus tristeza virus Genotypes - (Abstract Only)
Saponari, M., Giampetruzzi, A., Doddapaneni, H., Loconsole, G., Xiong, Z., Saldarelli, P., Yokomi, R.K. 2010. Global Analyses of Small Interfering RNAs from Sour Orange seedlings Infected with Different Citrus tristeza virus Genotypes[abstract]. International Organization of Citrus Virologists Proceedings. 31:s64.
Plant-feeding insects harbor double-stranded RNA viruses encoding a novel proline-alanine rich protein and a polymerase distantly related to that of fungal viruses - (Peer Reviewed Journal)
Spear, A., Sisterson, M.S., Yokomi, R.K., Stenger, D.C. 2010. Plant-feeding insects harbor double-stranded RNA viruses encoding a novel proline-alanine rich protein and a polymerase distantly related to that of fungal viruses. Virology. 404:304-311.
New Perspectives on the Epidemiology of Citrus Stubborn Disease in California Orchards - (Peer Reviewed Journal)
Mello, A.F., Yokomi, R.K., Melcher, U., Chen, J., Civerolo, E.L., Wayadande, A., Fletcher, J. 2010. New Perspectives on the Epidemiology of Citrus Stubborn Disease in California Orchards. Plant Health Progress. Online publication,(DOI:10.1094/PHP-2010-0526-04-SY).
Novel double-stranded RNA viruses of plant-feeding insects encode a serine-alanine-proline rich protein and a polymerase distantly related to fungal viruses - (Abstract Only)
Spear, A., Sisterson, M.S., Yokomi, R.K., Stenger, D.C. 2010. Novel double-stranded RNA viruses of plant-feeding insects encode a serine-alanine-proline rich protein and a polymerase distantly related to fungal viruses. American Society for Virology Meeting Scientific Program. P.79.
First Report of “Candidatus Liberibacter asiaticus” Associated with Huanglongbing in Ethiopia - (Research Notes)
De Bac, G., Saponari, M., Loconsole, G., Martelli, G., Yokomi, R.K., Catalano, L., Breithaupt, J. 2010. First Report of “Candidatus Liberibacter asiaticus” Associated with Huanglongbing in Ethiopia. Plant Disease 94(4):482.
Effect of Citrus Stubborn Disease on Navel Orange Production in a Commercial Orchard in California - (Peer Reviewed Journal)
Mello, A.F., Yokomi, R.K., Payton, M.E., Fletcher, J. 2010. Effect of Citrus Stubborn Disease on Navel Orange Production in a Commercial Orchard in California. Journal of Plant Pathology. 92:429-438.
Rapid Differentiation and Identification of Potential Severe Strains of Citrus tristeza Virus by Real-Time Reverse Transcription Polymerase Chain Reaction Assays - (Peer Reviewed Journal)
Yokomi, R.K., Saponari, M., Sieburth, P.J. 2010. Rapid Differentiation and Identification of Potential Severe Strains of Citrus tristeza Virus by Real-Time Reverse Transcription Polymerase Chain Reaction Assays. Phytopathology. 100:319-327.
Citrus Stubborn Severity is Associated with Spiroplasma Citri Titer but Not with Bacterial Genotype. - (Peer Reviewed Journal)
Mello, A.F., Yokomi, R.K., Melcher, U., Chen, J., Fletcher, J. 2009. Citrus Stubborn Severity is Associated with Spiroplasma Citri Titer but Not with Bacterial Genotype. Plant Disease. 94:75-82.
Molecular Detection of Spiroplasma Citri Associated with Stubborn Disease in Citrus Orchards in Syria - (Abstract Only)
Kubaa, R., Saponari, M., Djelouah, K., Yokomi, R.K., El-Khateeb, A., Jamal, M. 2009. Molecular Detection of Spiroplasma Citri Associated with Stubborn Disease in Citrus Orchards in Syria. Arabian Journal of Plant Protection. 27(V57):93. Available: http://www.asplantprotection.org/PDF/AJPP/27-1_2009/AbstractBook-10th_Arab_Congress_of_Plant_Protection.pdf
Molecular Analysis Among MCA13-reactive Isolates Reveals a Strategy for Rapid Assessment of Citrus tristeza Virus Severity - (Abstract Only)
Yokomi, R.K., Saponari, M. 2009. Molecular analysis among MCA13-reactive isolates reveals a strategy for rapid assessment of citrus tristeza virus severity. Meeting Abstract. p. 112.
Transmission of different strains of Spiroplasma citri to carrot and citrus by Circulifer tenellus Baker (Hemiptera:Cicadellidae) - (Peer Reviewed Journal)
Mello, A.F., Wayadande, A., Yokomi, R.K., Fletcher, J. 2009. Transmission of different strains of Spiroplasma citri to carrot and citrus by Circulifer tenellus Baker (Hemiptera:Cicadellidae). Journal of Economic Entomology. 102(4):1417-1422.
Genetic Diversity of Citrus tristeza Virus Isolates Collected Recently in California - (Abstract Only)
Yokomi, R.K., Saponari, M., Metheney, P., Polek, M., Vidalakis, G. 2009. Genetic Diversity of Citrus tristeza Virus Isolates Collected Recently in California. Phytopathology 99:S147.
Assessment of the Citrus tristeza virus isolates detected in spring 2007 at the Lindcove Research and Extension Center, Exeter, California - (Peer Reviewed Journal)
Yokomi, R.K., Polek,, M., Grafton-Cardwell,, B., Vidalakis,, G., O'Connell,, N., Saponari,, M. 2011. Assessment of the Citrus tristeza virus isolates detected in spring 2007 at the Lindcove Research and Extension Center, Exeter, California. International Organization of Citrus Virologists Proceedings. p. 28-35.
Elevated Background in double antibody sandwich-indirect enzyme-linked immunosorbent assay for the detection of Citrus tristeza virus in mandarin cultivars - (Peer Reviewed Journal)
Yokomi, R.K., Polek, M. 2011. Elevated Background in double antibody sandwich-indirect enzyme-linked immunosorbent assay for the detection of Citrus tristeza virus in mandarin cultivars. International Organization of Citrus Virologists Proceedings. p. 36-42.
Estimation of Citrus Stubborn Disease Incidence in Citrus Groves by real-time PCR - (Peer Reviewed Journal)
Yokomi, R.K., Mello,, A.F., Fletcher,, J., Saponari,, M. 2011. Estimation of Citrus Stubborn Disease Incidence in Citrus Groves by real-time PCR. Conference of International Organization of Citrus Virologists. p.131-141.
Differential stylet penetration behaviors of two Aphis gossypii biotypes in relation to host or vector infection with Citrus tristeza virus Reprint Icon - (Abstract Only)
Gutierrez, J.D., Backus, E.A., Yokomi, R.K., Schreiber, F. 2008. Differential stylet penetration behaviors of two Aphis gossypii biotypes in relation to host or vector infection with Citrus tristeza virus. Entomological Society of America Annual Meeting. Paper No. 36418.
Assessment of Stubborn Disease Incidence in Citrus - (Peer Reviewed Journal)
Mello, A.F., Yokomi, R.K., Fletcher, J. 2011. Assessment of Stubborn Disease Incidence in Citrus. In: Proceedings of the International Organization of Citrus Virologists. p. 123-130.
Genetic Diversity of Spiroplasma citri strains from Different Regions, Hosts, and Isolation Dates - (Peer Reviewed Journal)
Mello, A.F., Yokomi, R.K., Mulcher, U., Chen, J., Wayadande, A., Fletcher, J. 2008. Genetic Diversity of Spiroplasma citri strains from Different Regions, Hosts, and Isolation Dates. Phytopathology. 98:960-968.
Genetic diversity of Citrus tristeza virus isolates spreading in Central California - (Abstract Only)
Yokomi, R.K., Polek,, M., Saponari,, M. 2008. Genetic diversity of Citrus tristeza virus isolates spreading in Central California. American Phytopathological Society Abstracts. 98:S178.
Citrus stubborn symptom severity and Spiroplasma citri location within the tress canopy - (Abstract Only)
Mello,, A.F., Yokomi, R.K., Payton,, M., Fletcher,, J. 2008. Citrus stubborn symptom severity and Spiroplasma citri location within the tress canopy. American Phytopathological Society Annual Meeting. 98:S104.
Use of the Coat Protein (CP) and minor CP Intergene Sequence to Discriminate Severe Strains of Citrus tristeza virus - (Peer Reviewed Journal)
Saponari,, M., Yokomi, R.K. 2011. Use of the Coat Protein (CP) and minor CP Intergene Sequence to Discriminate Severe Strains of Citrus tristeza virus. In: Proceedings of the International Organization of Citrus Virologists. p.43-57.
Citrus stubborn disease incidence determined by quantitative real time PCR - (Abstract Only)
Yokomi, R.K., Mello,, A.F., Fletcher,, J. 2008. Citrus stubborn disease incidence determined by quantitative real time PCR. Journal of Plant Pathology 90 (2, Suppl.) S2.465.
Molecular analyses revealed genetic complexity in Citrus tristeza virus Dekopon isolate and its aphid-transmitted progeny - (Abstract Only)
Yokomi, R.K., Saponari,, M., Weng,, Z., Xiong,, Z. 2008. Molecular analyses revealed genetic complexity in Citrus tristeza virus Dekopon isolate and its aphid-transmitted progeny [abstract]. Journal of Plant Pathology 90(2, Suppl.),S2.314.
Transmission of Spiroplasma citri to Carrots by Circulifer tenellus - (Abstract Only)
Mello,, A.F., Yokomi, R.K., Chen, J., Wayadande,, A., Fletcher,, J. 2008. Transmission of Spiroplasma citri to Carrots by Circulifer tenellus. Journal of Plant Pathology 90(2, Suppl.), S2.463.
PCR-based Detection of Spiroplasma Citri Associated with Citrus Stubborn Disease - (Peer Reviewed Journal)
Yokomi, R.K., Mello, A., Saponari, M., Fletcher, J. 2008. PCR-based detection of spiroplasma citri associated with citrus stubborn disease. Plant Disease. 92:253-260.
Quantitative Detection of Spiroplasma Citri by Real Time PCR - (Abstract Only)
Yokomi, R.K., Mello,, A.F., Fletcher,, J., Saponari, M. 2007. Quantitative Detection of Spiroplasma Citri by Real Time PCR. In: Proceedings of the 17th Conference International Organization of Citrus Virologists, October 22-26, 2007, Adana, Turkey. p. 172.
Elevated Background in DAS-I ELISA for the Detection of Citrus Tristeza Virus in Mandarin Varieties - (Abstract Only)
Yokomi, R.K., Polek,, M. 2007. Elevated Background in DAS-I ELISA for the Detection of Citrus Tristeza Virus in Mandarin Varieties. In: Proceedings of the 17th Conference International Organization of Citrus Virologists, October 22-26, 2007, Adana, Turkey. p. 66.
Rapid Assessment of the Citrus Tristeza Virus Isolates Detected in Spring 2007 at the Lindcove Research and Extension Center, Exeter, Calif. - (Abstract Only)
Yokomi, R.K., Polek,, M., Grafton-Cardwell,, B., O'Connell,, N. 2007. Rapid Assessment of the Citrus Tristeza Virus Isolates Detected in Spring 2007 at the Lindcove Research and Extension Center, Exeter, California. In: Proceedings of the 17th Conference of International Organization of Citrus Virologists, October 22-26, 2007, Adana, Turkey. p. 58.
Biological and Molecular Characterization of Two Virulent CTV Isolates Found in Central California - (Abstract Only)
Yokomi, R.K., Saponari,, M. 2007. Biological and Molecular Characterization of Two Virulent CTV Isolates Found in Central California. In: Proceedings of the 17th International Organization of Citrus Virologists. p. 71.
Assessment of Stubborn Disease Incidence in Citrus - (Abstract Only)
Mello,, A.F., Yokomi, R.K., Fletcher,, J. 2007. Assessment of Stubborn Disease Incidence in Citrus. In: Proceedings of the 17th International Organization of Citrus Virologists, October 22-26, 2007, Adana, Turkey. p. 173.
Use of the CP and CPm Intergene Sequences to Discriminate CTV Strains - (Abstract Only)
Saponari,, M., Yokomi, R.K. 2007. Use of the CP and CPm Intergene Sequences to Discriminate CTV Strains. In: Proceedings of the 17th International Organization of Citrus Virologists, October 22-26, 2007, Adana, Turkey. p. 138.
Characterization of Citrus Tristeza Virus Isolates by Single-strand Conformation Polymorphism Analysis of the Coat Protein Gene - (Abstract Only)
Saponari,, M., Yokomi, R.K. 2007. Characterization of Citrus Tristeza Virus Isolates by Single-strand Conformation Polymorphism Analysis of the Coat Protein Gene. In: Proceedings of the 17th International Organization of Citrus Virologists, October 22-26, 2007, Adana, Turkey. p. 139
Real-time RT-PCR assay for detection and differentiation of Citrus tristeza virus isolates - (Abstract Only)
Saponari,, M., Yokomi, R.K. 2007. Real-time RT-PCR assay for detection and differentiation of Citrus tristeza virus isolates. Journal of Plant Pathology 89 (3, supplement):S60.
Quantitative Detection of Citrus tristeza virus (CTV) in Citrus and Aphids by Real-time Reverse Transcription-PCR (TaqMan®) Reprint Icon - (Peer Reviewed Journal)
Saponari, M., Keremane, M.L., Yokomi, R.K. 2008. Quantitative Detection of Citrus tristeza virus (CTV) in Citrus and Aphids by Real-time Reverse Transcription-PCR (TaqMan®). Journal of Virological Methods. 147:43-53.
PCR-based Detection of Spiroplasma citri Associated with Citrus Stubborn Disease - (Abstract Only)
Yokomi, R.K., Mello, A.F., Saponari, M., Fletcher, J. 2007. PCR-based Detection of Spiroplasma citri Associated with Citrus Stubborn Disease. Phytopathology. 97:S127.
Genetic Diversity of Spiroplasma citri Isolates from Different Geographical Regions, Plant Hosts, and Dates of Isolations - (Abstract Only)
Mello, A.F., Yokomi, R.K., Melcher, U., Chen, J., Fletcher, J. 2007. Genetic Diversity of Spiroplasma citri Isolates from Different Geographical Regions, Plant Hosts, and Dates of Isolations. Phytopathology. 97:S75.
Real-time RT-PCR Assay for Detection and Differentiation of Citrus Tristeza Virus Isolates - (Abstract Only)
Saponari, M., Yokomi, R.K. 2007. Real-time RT-PCR Assay for Detection and Differentiation of Citrus Tristeza Virus Isolates. Phytopathology. 97:S104.
Spiroplasma citri Infection Affects Yield and Fruit Quality in Commercial Citrus Grove in California - (Abstract Only)
Mello, A.F., Fletcher, J., Yokomi, R.K. 2007. Spiroplasma citri Infection Affects Yield and Fruit Quality in Commercial Citrus Grove in California. Phytopathology. 97:S74.
Identification of Infection Loci of Spiroplasma Citri in the San Joaquin Valley. - (Abstract Only)
Yokomi, R.K., Mello, A., Fletcher, J., Chen, J.C. 2006. Identification of infection loci of Spiroplasma citri in the San Joaquin Valley. Phytopathology 97:S172. APS Net. 2006 Pacific Division Meeting Abstracts, June 13-16, 2006 - Boise, ID. Posted online Oct. 2, 2006. http://www.apsnet.org/ meetings/div/pc06abs.asp.
Molecular Techniques to Assess Genetic Diversity among Isolates of Spiroplasma Citri. - (Abstract Only)
Mello, A.F.S., Yokomi, R.K., Melcher, U., Chen, J.C., Fletcher. J. 2006. Molecular techniques to assess genetic diversity among isolates of Spiroplasma citri [abstract]. 16th International Congress International Organization for Mycoplasmology (IOM), St John's College Cambridge, UK, July 9-14, 2006.
Assessment of Genetic Diversity in Spiroplasma Citri by Rapd, Rep-Pcr and Bacteriophage Primers - (Abstract Only)
Mello, A.F., Yokomi, R.K., Melcher, U., Chen, J., Fletcher, J. 2006. Assessment of Genetic Diversity in Spiroplasma citri by RAPD, rep-PCR and Bacteriophage Primers. Meeting Abstract. Phytopathology 96:S77
Multiplex Taqman-Based Pcr for Sensitive and Accurate Quantification of Citrus Hlb and Cvc Pathogens; Candidatus Liberibacter and Xylella Fastidiosa - (Abstract Only)
Lin, H., Doddapaneni, H., Civerolo, E.L., Yao, J., Yokomi, R.K., Bai, X., Cao, H., Zhao, X., Wen, R. 2006. Multiplex taqman-based pcr for sensitive and accurate quantification of citrus hlb and cvc pathogens; candidatus liberibacter and xylella fastidiosa [Abstract]. Proceedings of the Huanglongbing-greening International Workshop. p. 83.
Initial Survey for Spiroplasma Citri, a Leafhopper-Transmitted Pathogen Infecting Citrus and Other Crops in Central California. - (Abstract Only)
Yokomi, R.K., Mello, A., Kallsen, C., Nunez, J., Gorden, J., O’Connell, N., Freeman, M., Chen, J.C., Fletcher, J. 2006. Initial survey for Spiroplasma citri, a leafhopper-transmitted pathogen infecting citrus and other crops in central California [abstract]. In: Abstracts 90th Annual Meeting Pacific Branch ESA, Maui, Hawaii, March 5-8, 2006. p.108-109.
Transmission and Spread of Citrus Tristeza Virus in Central California. - (Book / Chapter)
Yokomi, R.K., Polek, M., Gumpf, D.J. 2010. TRANSMISSION AND SPREAD OF CITRUS TRISTEZA VIRUS IN CENTRAL CALIFORNIA. In: Karasev, A.V., and M.E. Hilf, editors. Citrus Tristeza Virus Complex and Tristeza Diseases. APS Press, St. Paul, MN. p. 151-165.
Biological Characterization of An International Collection of Citrus Tristeza Virus (Ctv) Isolates - (Proceedings) - (04-Jul-05)
Biocharcterization of An International Collection of Citrus Tristeza Virus (Ctv) Isolates. - (Abstract Only) - (04-Jul-05)
Incidence, Transmissibility, and Genotype of Citrus Tristeza Virus (Ctv) Isolates from a Ctv Eradicative and a Non-Eradicative District in Central California - (Peer Reviewed Journal)
Yokomi, R.K., Deborde, R.L. 2005. Incidence, transmissibility, and genotype of citrus tristeza virus (CTV) isolates from a CTV eradicative and a non-eradicative district in central california. Plant Disease. 89(8):859-866.
Amino Acid Sequence Variations Assoicated with Aphid Transmissibility of Citrus Tristeza Virus. - (Abstract Only)
Roy, G., Yokomi, R.K., Ullman, D. 2005. Amino acid sequence variations assoicated with aphid transmissibility of citrus tristeza virus.[Abstract]. Phytopathology. 95:S91.
Transmission Profiles of California Citrus Tristeza Virus Isolates by the Cotton Aphid, Aphis Gossypii (Homoptera: Aphididae). - (Abstract Only)
Yokomi, R.K. 2005. Transmission profiles of California Citrus tristeza virus isolates by the cotton aphid, Aphis gossypii (homoptera: aphididae). Entomology Society of America Pacific Branch 89th Annual Meeting. p.103
Biocharacterization of An International Collection of Citrus Tristeza Virus (Ctv) Isolates - (Abstract Only)
Garnsey, S.M., Civerolo, E.L., Gumpf, D.J., Paul, C., Hilf, M.E., Lee, R.F., Brlanskyr, R.H., Yokomi, R.K., Hartung, J.S. 2004. Biocharacterization of an international collection of citrus tristeza virus (CTR) isolates. International Organization of Citrus Virologists Abstracts, Page 49.
Biological Characterization of An International Collection of Citrus Tristeza Virus (Ctv)isolates - (Peer Reviewed Journal)
Garnsey, S.M., Civerolo, E.L., Gumpf, D.J., Paul, C., Hilf, M.E., Lee, R.F., Brlansky, R.H., Yokomi, R.K., Hartung, J.S. 2007. Biological characterization of an international collection of citrus tristeza virus (ctv)isolates. In: Proceedings of Conference of International Organization of Citrus Virologists. p. 75-93.
Preliminary Evaluation of Two Biotypes of Aphis Gossypii on the Transmission of Citrus Tristeza Virus. - (Abstract Only)
Yokomi, R.K., Joost, J.H., Backus, E.A. 2004. Preliminary evaluation of two biotypes of aphis gossypii on the transmission of citrus tristeza virus. [Abstract] Conference of International Organization of Citrus Virologists. p.136.
Transmissibility and Genotype Analysis of Central California Isolates of Citrus Tristeza Closterovirus - (Abstract Only)
Yokomi, R.K. 2004. Transmissibility and genotype analysis of Central California isolates of Citrus tristeza closterovirus. Phytopathology 94:S-131.
Aphelinus Dalman (1820) - (Book / Chapter) - (15-Dec-96)
Citrus Tristeza Virus - (Book / Chapter) - (20-Sep-96)
Toxoptera Citricida - (Book / Chapter) - (20-Jul-96)
ARS News Articles
Last Modified: 4/17/2014
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