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United States Department of Agriculture

Agricultural Research Service

Les J Szabo
Research Geneticist


Publications (Clicking on the reprint icon Reprint Icon will take you to the publication reprint.)
Comparative analysis highlights variable genome content of wheat rusts and divergence of the mating loci. -
Kenyan isolates of Puccinia graminis f. sp. tritici from 2008 to 2014: Virulence to SrTmp in the Ug99 race group and implications for breeding programs -
Newcomb, M., Olivera, P., Rouse, M.N., Szabo, L.J., Johnson, J.L., Gale, S.W., Luster, D.G., Wanyera, R., Macharia, G., Bhavani, S., Hodson, D., Patpour, M., Hovmoller, M., Fetch, T., Jin, Y. 2016. Kenyan isolates of Puccinia graminis f. sp. tritici from 2008 to 2014: Virulence to SrTmp in the Ug99 race group and implications for breeding programs. Phytopathology. 106(7):729-36. doi: 10.1094/PHYTO-12-15-0337-R.
A new rust disease on wild coffee (Psychotria nervosa) caused by Puccinia mysuruensis sp. nov -
Mahadevakumar, M., Szabo, L.J., Eilam, T., Anikster, Y., Janardhana, G.R. 2016. A new rust disease on wild coffee (Psychotria nervosa) caused by Puccinia mysuruensis sp. nov. Plant Disease. 100:1371-1378.
Changing the game: using integrative genomics to probe virulence mechanisms of the stem rust pathogen Puccinia graminis f. sp. tritici -
Figueroa, M., Upadhyaya, N.M., Sperschneider, J., Park, R., Szabo, L.J., Steffenson, B.J., Ellis, J., Dodds, P. 2016. Changing the game: using integrative genomics to probe virulence mechanisms of the stem rust pathogen Puccinia graminis f. sp. tritici. Frontiers in Plant Science. 7(205):1-10.
Emergence of virulence to SrTmp in the Ug99 race group of wheat stem rust, Puccinia graminis f.sp. tritici in Africa -
Identification of promising host-induced silencing targets among genes preferentially transcribed in haustoria of Puccinia -
Yin, C.T., Downey, S.I., Klasges-Mundt, N.L., Ramachandran, S., Chen, X., Szabo, L.J., Pumphrey, M., Hulbert, S.H. 2015. Identification of promising host-induced silencing targets among genes preferentially transcribed in haustoria of Puccinia. Biomed Central (BMC) Genomics. 16:579.
Emergence and spread of new races of wheat stem rust fungus: Continued threat to food security and prospects of genetic control -
Singh, R., Hodson, D., Jin, Y., Lagudah, E., Ayliffe, M.A., Bhavani, S., Rouse, M.N., Szabo, L.J., Pretorius, Z.A., Huerta-Espino, J., Basnet, B.R., Lan, C., Hovmøller, M.S. 2015. Emergence and spread of new races of wheat stem rust fungus: Continued threat to food security and prospects of genetic control. Phytopathology. 105(7):872-884.
Phenotypic and genotypic characterization of race TKTTF of Puccinia graminis f. sp. tritici that caused a wheat stem rust epidemic in southern Ethiopia in 2013-2014 -
Olivera, P., Newcomb, M., Szabo, L.J., Rouse, M.N., Johnson, J.L., Hodson, D., Luster, D.G., Cox, J., Burgin, L., Gilligan, C., Patpour, M., Hovmoller, M., Woldeab, G., Hailu, E., Hundie, B., Tadesse, K., Pumphrey, M., Singh, R., Jin, Y. 2015. Phenotypic and genotypic characterization of race TKTTF of Puccinia graminis f. sp. tritici that caused a wheat stem rust epidemic in southern Ethiopia in 2013-2014. Phytopathology. 105(7):917-928.
Puccinia graminis -
Szabo, L.J., Cuomo, C.A., Park, R.F. 2014. Puccinia graminis. In: Dean, R.A., Lichens-Park, A., Chittaranjan, K., editors. Genomics of plant associated fungi: Monocot pathogens. Heidelberg, Berlin: Springer-Verlag. p. 177-196.
Understanding the genetic landscape of Puccinia graminis f. sp. tritici, from a global to country perspective -
Szabo, L.J., Visser, B., Sakthikumar, S., Johnson, J.L., Park, R., Cuomo, C. 2013. Understanding the genetic landscape of Puccinia graminis f. sp. tritici, from a global to country perspective. Indian Council of Agricultural Research (ICAR) Monograph. p. 3.
Molecular phylogenetic relationships of the brown leaf rust fungi on wheat, rye and other grasses -
Liu, M., Szabo, L.J., Hambleton, S., Anikster, Y., Kolmer, J.A. 2013. Molecular phylogenetic relationships of the brown leaf rust fungi on wheat, rye and other grasses. Plant Disease. 97:1408-1417.
Screening wild oat accessions from Morocco for resistance to Puccinia coronata -
Szabo, L.J., Carson, M.L. 2013. Screening wild oat accessions from Morocco for resistance to Puccinia coronata. Plant Disease. 97:1544-1548.
Host status of barley to Puccinia coronata from couch grass and P. striiformis from wheat and brome -
Niks, R.E., Van Heyzen, S., Szabo, L.J., Alemu, S.K. 2013. Host status of barley to Puccinia coronata from couch grass and P. striiformis from wheat and brome. European Journal of Plant Pathology. 136(2):393-405.
Conserved loci of leaf and stem rust fungi of wheat share synteny interrupted by lineage-specific influx of repeat elements Reprint Icon -
Fellers, J.P., Soltani, B., Bruce, M.A., Linning, R., Cuomo, C.A., Szabo, L.J., Bakkeren, G. 2013. Conserved loci of leaf and stem rust fungi of wheat share synteny interrupted by lineage-specific influx of repeat elements. Biomed Central (BMC) Genomics. doi:10.1186/1471-2164-14-60.
Characterization of the rust fungus, Puccinia emaculata, and evaluation of genetic variability for rust resistance in switchgrass populations -
Uppalapati, S.R., Serba, D.D., Ishiga, Y., Szabo, L.J., Mittal, S., Bhandari, H.S., Bouton, J.H., Mysore, K.S. 2013. Characterization of the rust fungus, Puccinia emaculata, and evaluation of genetic variability for rust resistance in switchgrass populations . BioEnergy Research. 6(2):458-468.
First Report of Garlic Rust Caused by Puccinia allii on Allium sativum in Minnesota -
Szabo, L.J., Mollov, D.S., Rosen, C. 2013. First Report of Garlic Rust Caused by Puccinia allii on Allium sativum in Minnesota. Disease Note. 97(2):285.2.
First Report of Veronica Rust by Puccinia veronicae-longifoliae in Minnesota on Veronica spicata Royal Candles -
Stoxen, S.M., Mollov, D., Szabo, L.J. 2013. First Report of Veronica Rust by Puccinia veronicae-longifoliae in Minnesota on Veronica spicata Royal Candles. Disease Note. 97:285.
Evaluation of a SNP-based qPCR identification system for the Ug99 race group using field collections of Puccinia graminis f. sp. tritici in South Africa -
Visser, B., Szabo, L.J., Terefe, T., Pretorius, Z. 2012. Evaluation of a SNP-based qPCR identification system for the Ug99 race group using field collections of Puccinia graminis f. sp. tritici in South Africa. Meeting Abstract. p. 239.
Analysis of genetic diversity within the Puccinia graminis Ug99 race group using SNP based markers -
Szabo, L.J. 2012. Analysis of genetic diversity within the Puccinia graminis Ug99 race group using SNP based markers. Meeting Abstract. p. 237.
Development of a molecular assay system for the rapid detection and identification of Ug99 and related races of Puccinia graminis -
Szabo, L.J., Crouch, J. 2012. Development of a molecular assay system for the rapid detection and identification of Ug99 and related races of Puccinia graminis. Meeting Abstract. p. 238.
Molecular Characterization of wheat stem rust races in Kenya -
Wanyera, R., Kyalo, M., Wanjala, B., Harvey, J., Szabo, L.J. 2012. Molecular Characterization of wheat stem rust races in Kenya. Meeting Abstract. p. 233.
Disease development and genotypic diversity of Puccinia graminis f. sp. avenae in Swedish oat fields -
Berlin, A., Samils, B., Djurle, A., Wirsen, H., Szabo, L.J., Yuen, J. 2012. Disease development and genotypic diversity of Puccinia graminis f. sp. avenae in Swedish oat fields. Plant Pathology. Available: http://onlinelibrary.wiley.com/journal/10.1111/%28ISSN%291365-3059.
First report of a variant within wheat stem rust (Puccinia graminis f. sp. tritici) race TTKSF in South Africa and Zimbabwe -
Pretorius, Z.A., Szabo, L.J., Boshoff, W., Herselman, L., Vissar, B. 2012. First report of a variant within wheat stem rust (Puccinia graminis f. sp. tritici) race TTKSF in South Africa and Zimbabwe. Disease Note. 96(4):590.
Using hierarchical clustering of secreted protein families to classify and rank candidate effectors of rust fungi -
Saunders, D., Win, J., Cano, L., Szabo, L.J., Kamoun, S., Raffaele, S. 2012. Using hierarchical clustering of secreted protein families to classify and rank candidate effectors of rust fungi. PLoS One. 7(1):e29847.
Concerted action of two avirulent spore effectors activates Reaction to Puccinia graminis 1 (Rpg1)-mediated cereal stem rust resistance -
Nirmala, J., Drader, T., Lawrence, P.K., Yin, C., Hulbert, S., Steber, C.M., Steffenson, B.J., Szabo, L.J., Von Wettstein, D., Kleinhofs, A. 2011. Concerted action of two avirulent spore effectors activates Reaction to Puccinia graminis 1 (Rpg1)-mediated cereal stem rust resistance. Proceedings of the National Academy of Sciences. 108(35):14676-81.
Identification of the Pgt effectors that are recognized in rice -
Katagiri, F., Tsuda, Y., Stoddard, T., Cuomo, C.A., Glazebrook, J., Szabo, L.J. 2011. Identification of the Pgt effectors that are recognized in rice. Meeting [abstract]. Borlaug Global Rust Initiative Technical Workshop. Paper No. 8.
Crossing borders -- the global dimension of rust monitoring -
Morphological comparison of aeciospores from rust fungi infecting Berberis spp. -
Szabo, L.J., Jin, Y. 2011. Morphological comparison of aeciospores from rust fungi infecting Berberis spp.. Meeting Abstract. No published abstract.
Puccinia graminis: variation is the rule -
Szabo, L.J., Cuomo, C.A., Jin, Y., Rouse, M.N., Olivera, P. 2011. Puccinia graminis: variation is the rule. Meeting Abstract. p. 35.
Predicting soybean rust incursions into the North American continental interior using crop monitoring, spore trapping, and aerobiological modeling -
Isard, S., Barnes, C., Hambleton, S., Ariatti, A., Russo, J., Tenuta, A., Gay, D., Szabo, L.J. 2011. Predicting soybean rust incursions into the North American continental interior using crop monitoring, spore trapping, and aerobiological modeling. Plant Disease. 95(11):1346.
Wheat stem rust biology in the United States: Puccinia pathway precautions -
New insights into the obligate biotrophic lifestyle of rust fungi through comparative genomics -
Cuomo, C., Szabo, L.J., Grabherr, M., Mauceli, E., Young, S., Zeng, Q., Sakthikumar, S., Bakkeren, G., Fellers, J.P., Katagiri, F., Glazebrook, J., Tsuda, Y., Stoddard, T.J., Tsuda, K., Chen, X., Yin, C., Hulbert, S. 2011. New insights into the obligate biotrophic lifestyle of rust fungi through comparative genomics. American Phytopathological Society Annual Meeting. 101:S208.
Obligate biotrophy features unraveled by the genomic analysis of the rust fungi, Melampsora larici-populina and Puccinia graminis f. sp. tritici -
Duplessis, S., Cuomo, C.A., Lin, Y., Aerts, A., Tisserant, E., Veneault-Fourrey, C., Joly, D., Hacquard, S., Amselem, J., Cantarel, B., Chiu, R., Couthinho, P., Feau, N., Field, M., Frey, P., Gelhaye, E., Goldberg, J., Grabherr, M., Kodira, C., Kohler, A., Kues, U., Lindquist, E., Lucas, S., Mauceli, E., Morin, E., Murat, C., Pearson, M., Quesneville, H., Rouhier, N., Sakthikumar, S., Schmutz, J., Selles, B., Shapiro, H., Tangay, P., Tuskan, G.A., Van De Peer, Y., Henrissat, B., Rouze, P., Schein, J., Dodds, P.N., Zhong, S., Hamelin, R.C., Birren, B.W., Grigoriev, I.V., Szabo, L.J., Martin, F. 2011. Obligate biotrophy features unraveled by the genomic analysis of the rust fungi, Melampsora larici-populina and Puccinia graminis f. sp. tritici. Phytopathology. 108:9166-9171.
Real-Time PCR Detection of the Southern Corn Rust Pathogen Puccinia polysora -
Crouch, J., Szabo, L.J. 2010. Real-time PCR detection of the southern corn rust pathogen Puccinia polysora [abstract]. Phytopathology. 100:S27.
A Panel of SNP-Based Real-Time PCR Probes for the Rapid and Accurate Detection of Ug99 -
Crouch, J., Sakthikumar, S., Cuomo, C., Pretorious, Z.A., Szabo, L.J. 2010. A Panel of SNP-Based Real-Time PCR Probes for the Rapid and Accurate Detection of Ug99. International Wheat Conference Proceedings. p. 477.
Application of Comparative Genomics for the Identification and Monitoring of the Highly Virulent African Race, Ug99, of Puccinia graminis -
Crouch, J., Sakthikumar, S., Cuomo, C., Stoxen, S., Pretorious, Z.A., Szabo, L.J. 2010. Application of Comparative Genomics for the Identification and Monitoring of the Highly Virulent African Race, Ug99, of Puccinia graminis [abstract]. Phytopathology. 100:S156.
A Panel of SNP-Based Real-Time PCR Probes for the Rapid and Accurate Detection of Ug99 -
Crouch, J., Sakthikumar, S., Cuomo, C., Pretorious, Z.A., Szabo, L.J. 2010. A Panel of SNP-Based Real-Time PCR Probes for the Rapid and Accurate Detection of Ug99. Proceedings of Agricultural Research Service Global Change Workshop. p. 28.
PCR assays for the sugarcane rust pathogens Puccinia kuehnii and P. melanocephala and detection of a SNP associated with geographic distribution in P. kuehnii Reprint Icon -
Glynn, N.C., Dixon, L.J., Castlebury, L.A., Szabo, L.J., Comstock, J.C. 2010. PCR assays for the sugarcane rust pathogens Puccinia kuehnii and P. melanocephala and detection of a SNP associated with geographic distribution in P. kuehnii. Plant Pathology. 59:703-711.
Century-old Mystery of Puccinia striiformis Life History Solved with the Identification of Berberis as an Alternate Host Reprint Icon -
Jin, Y., Szabo, L.J., Carson, M.L. 2010. Century-old Mystery of Puccinia striiformis Life History Solved with the Identification of Berberis as an Alternate Host. Phytopathology. 100(5):432-435.
Real-time PCR discrimination of the southern and common corn rust pathogens Puccinia polysora and P. sorghi -
Crouch, J., Szabo, L.J. 2011. Real-time PCR discrimination of the southern and common corn rust pathogens Puccinia polysora and P. sorghi. Plant Disease. 95(6):624-632.
Sequencing Ug99 and Other Stem Rust Races: Progress and Results -
Szabo, L.J., Cuomo, C. 2009. Sequencing Ug99 and Other Stem Rust Races: Progress and Results. BGRI Technical Workshop Proceedings. p. 20.
Genomics of Biotic Interactions in the Triticeae Reprint Icon -
Wise, R.P., Lauter, N.C., Szabo, L.J., Schweizer, P. 2009. Genomics of Biotic Interactions in the Triticeae. In: Feuillet, C., Muehlbauer, G., editors. Genetics and Genomics of the Triticeae. New York, NY: Springer. p. 559-589.
Detection of Phakopsora pachyrhizi Spores in Rain Using a Real-Time PCR Assay Reprint Icon -
Barnes, C.W., Szabo, L.J., Bowersox, V.C. 2009. Detection of Phakopsora pachyrhizi Spores in Rain Using a Real-Time PCR Assay. Phytopathology. 99:328-338.
Detection of Virulence to Resistance Gene Sr36 within Race TTKS Lineage of Puccinia graminis f. sp. tritici Reprint Icon -
Jin, Y., Szabo, L.J., Rouse, M., Fetch, T., Pretorious, Z., Wanyera, R., Njau, P. 2009. Detection of Virulence to Resistance Gene Sr36 within Race TTKS Lineage of Puccinia graminis f. sp. tritici. Plant Disease. 93:367-370.
Development and characterization of expressed sequence tag (EST)-derived microsatellite markers for the wheat stem rust fungus, Puccinia graminis f.sp. tritici -
Zhong, S., Leng, Y., Friesen, T.L., Faris, J.D., Szabo, L.J. 2009. Development and characterization of expressed sequence tag (EST)-derived microsatellite markers for the wheat stem rust fungus, Puccinia graminis f.sp. tritici. Phytopathology 99:282-289.
Development and characterization of expressed sequence tag (EST)-derived microsatellite markers for the wheat stem rust fungus, Puccinia graminis f. sp. tritici -
Zhong, S., Leng, Y., Friesen, T.L., Faris, J.D., Szabo, L.J. 2008. Development and characterization of expressed sequence tag (EST)-derived microsatellite markers for the wheat stem rust fungus, Puccinia graminis f. sp. tritici. APS Annual Meeting. 98(6):S180
Patterns of Phakopsora pachyrhizi spore deposition detected in North America rain and their use to calibrate IAMS soybean rust forecasts in 2007 -
Barnes, C.W., Szabo, L.J., Isard, S.A., Ariatti, A., Tenuta, A.U., Hambleton, S., Tropiano, R., Bowersox, V.C., Claybrooke, R., Lehmann, C. 2008. Patterns of Phakopsora pachyrhizi Spore Deposition Detected in North America Rain and Their Use to Calibrate IAMS Soybean Rust Forecasts in 2007 [abstract]. Phytopathology. 98:518.
Virulence Evolution Within the Ug99 Lineage -
Jin, Y., Szabo, L.J., Pretorius, Z. 2008. Virulence Evolution Within the Ug99 Lineage. Wheat Genetics International Symposium Proceedings. Available: http://hdl.handle.net/2123/3435.
Assessing Population Structure of the Most Prevalent North American Races of Puccinia graminis f. sp. tritici Using Molecular Markers -
Stoxen, S., Szabo, L.J. 2008. Assessing Population Structure of the Most Prevalent North American Races of Puccinia graminis f. sp. tritici Using Molecular Markers [abstract]. Phytopathology. 98:5152.
Ug99 Surveillance: Current status, evolution and migration of the Ug99 lineage -
Detection of Virulence to Resistance Gene Sr24 within Race TTKS of Puccinia graminis f. sp. tritici Reprint Icon -
Jin, Y., Szabo, L.J., Pretorious, Z., Singh, R., Fetch, Jr., T. 2008. Detection of Virulence to Resistance Gene Sr24 within Race TTKS of Puccinia graminis f. sp. tritici. Plant Disease. 92:923-926.
MOLECULAR VARIABILITY OF A MINNESOTA POPULATION OF PHOMA MEDICAGINIS VAR. MEDICAGINIS, THE CAUSAL AGENT OF SPRING BLACK STEM AND LEAF SPOT OF ALFALFA -
Castell-Miller, C., Szabo, L.J., Gale, L.R., O'Neill, N.R., Samac, D.A. 2008. Molecular variability of a Minnesota population of Phoma medicaginis var. medicaginis, the causal agent of spring black stem and leaf spot of alfalfa. Canadian Journal of Plant Pathology. 30:85-96.
Genetical Genomic Dissection of Stem Rust Infection in Barley -
Lauter, N.C., Moscou, M.J., Rodriguez, J.E., Fuerst, G.S., Steffenson, B.J., Jin, Y., Szabo, L.J., Wise, R.P. 2007. Genetical Genomic Dissection of Stem Rust Infection in Barley [abstract]. Annual International Plant & Animal Genome Conference. Book of Abstracts. p. 17.
DEVELOPMENT OF SIMPLE SEQUENCE REPEAT MARKERS FOR THE PLANT PATHOGENIC RUST FUNGUS, PUCCINIA TRITICINA -
Szabo, L.J., Kolmer, J.A. 2007. Development of Simple Sequence Repeat Markers for the Plant Pathogenic Rust Fungus, Puccinia triticina. Molecular Ecology Notes. 7:708-710.
A RAPID METHOD FOR DETECTION AND QUANTIFICATION OF BACTERIAL DNA IN RUST FUNGAL DNA SAMPLES -
Barnes, C.W., Szabo, L.J. 2008. A Rapid Method for Detection and Quantification of Bacterial DNA in Rust Fungal DNA Samples. Phytopathology. 98:115-119.
Update on Ug99 (Race TTKS) Stem Rust Research -
Jin, Y., Szabo, L.J., Carson, M.L. 2007. Update on Ug99 (Race TTKS) Stem Rust Research. Eastern Wheat Workers and Southern Small Grain Workers Proceedings. p. 1-3.
DETECTION AND IDENTIFICATION OF FOUR COMMON RUST PATHOGENS OF CEREALS AND GRASSES USING REAL-TIME POLYMERASE CHAIN REACTION -
Barnes, C.W., Szabo, L.J. 2007. Detection and identification of four common rust pathogens of cereals and grasses using real-time polymerase chain reaction. Phytopathology. 97:717-727.
COMPARISON OF 2005 AND 2006 PHAKOPSORA PACHYRHIZI SPORE RAIN TRAP DATA -
Barnes, C.W., Szabo, L.J., Bowersox, V.C., Harlin, K.S. 2006. Comparison of 2005 and 2006 Phakopsora pachyrhizi spore rain trap data. In: Plant Management Network. Annual APS Soybean Rust Meeting, St. Louis, Mo, November 29 - December 1, 2006.
RUST -
Szabo, L.J., Koike, S.T., Hill, J.P. 2008. Rust. In: Schwartz, H.F, Mohan, S.K., editors. Compendium of Onion and Garlic Diseases and Pests. 2nd Edition. Minneapolis, Minnesota: APS Press. p. 41-44.
DEVELOPMENT OF SIMPLE SEQUENCE REPEAT MARKERS FOR THE PLANT PATHOGENIC RUST FUNGUS, PUCCINIA GRAMINIS -
Szabo, L.J. 2007. Development of Simple Sequence Repeat Markers for the Plant Pathogenic Rust Fungus, Puccinia graminis. Molecular Ecology Notes. 7:92-94.
INNATE NONHOST IMMUNITY IN BARLEY TO DIFFERENT HETEROLOGOUS RUST FUNGI IS CONTROLLED BY SETS OF RESISTANCE GENES WITH DIFFERENT AND OVERLAPPING SPECIFICITIES -
Jafary, H., Szabo, L.J., Niks, R.E. 2006. Innate Non-Host Immunity in Barley to Different Heterologous Rust Fungi is Controlled by Sets of Resistance Genes with Different and Overlapping Specificities. Molecular Plant-Microbe Interactions. 11:1270-1279.
DETECTION OF PHAKOPSORA PACHYRHIZI DNA IN RAIN USING QPCR AND A PORTABLE RAIN COLLECTOR -
Barnes, C.W., Szabo, L.J., Johnson, J.L., Nguyen, K.P., Floyd, C.M., Kurle, J.E. 2006. Detection of Phakopsora pachyrhizi dna in rain using qpcr and a portable rain collector [abstract]. Phytopathology. 96:59.
PHYLOGENETIC ANALYSIS OF THE PUCCINIA CORONATA COMPLEX -
Szabo, L.J., Anikster, Y., Eilam, T. 2006. Phylogenetic Analysis of the Puccinia coronata Complex [abstract]. American Phytopathological Society Abstracts. 96:5112.
DETECTION OF PHAKOPSORA PACHYRHIZI SPORES IN RAIN USING REAL-TIME PCR ASSAY -
Barnes, C.W., Szabo, L.J., Johnson, J.L., Bowersox, V.C., Harlin, K.S. 2006. Detection of Phakopsora pachyrhizi spores in rain using real-time PCR assay [abstract]. Journal of Phytopathology. 96:59.
INTRODUCTION OF ASIAN SOYBEAN RUST UREDINIOSPORES INTO THE MIDWESTERN UNITED STATES – A CASE STUDY -
Krupa, S., Bowersox, V.C., Claybrooke, R.D., Barnes, C.W., Szabo, L.J., Harlin, K.S., Kurle, J.E. 2006. Introduction of Asian Soybean Rust Urediniospores into the Midwestern United States – A Case Study. Plant Disease. 90:1254-1259.
DECIPHERING SPECIES COMPLEXES AND EVOLUTIONARY IMPLICATIONS -
Szabo, L.J. 2006. Deciphering species complexes: Puccinia andropogonis and Puccinia coronata, examples of differing modes of speciation. Mycoscience. 47:130-136.
2005: INTRODUCTION AND SPREAD OF SOYBEAN RUST SPORES IN THE NORTH CENTRAL UNITED STATES -
Kurle, J., Bowersox, V., Claybrooke, R., Krupa, S.V., Barnes, C.W., Szabo, L.J. 2005. 2005: introduction and spread of soybean rust spores in the north central united states. Available: http://www.plantmanagementnetwork.org.
TRANSIENT EXPRESSION AND INSERTIONAL MUTAGENESIS OF PUCCINIA TRITICINA USING BIOLISTICS -
Webb, C., Szabo, L.J., Bakkeren, G., Garry, C.E., Staples, R.C., Fellers, J.P. 2006. Transient expression and insertional mutagenesis of puccinia triticina using biolistics. Functional and Integrative Genomics.
EVOLUTIONARY RELATIONSHIP BETWEEN SYMPATRIC MICROCYCLIC FORMS OF TRANZSCHELIA SPP. -
Ordonez, M.E., Szabo, L.J., Groth, J.V. 2004. Evolutionary relationship between sympatric microcyclic forms of Tranzschelia spp. Phytopathology. 94:S79.
WHOLE GENOME SEQUENCING IN THE CEREAL RUST FUNGI -
Szabo, L.J. 2005. Whole genome sequencing in the cereal rust fungi. Proceedings of "Global Landscapes" in Cereal Rust Control Conference. p. 21.
AN EARLY WARNING SYSTEM FOR DETECTION OF AERIALLY TRANSPORTED PLANT PATHOGENS: PUCCINIA GRAMINIS AS A TEST CASE -
Barnes, C.W., Szabo, L.J., Johnson, J.L., Bowersox, V.C., Krupa, S.V., Gay, D.A., Harlin, K.S. 2005. An early warning system for detection of aerially transported plant pathogens: Puccinia graminis as a test case. In: Proceedings of American Phytopathological Society, Ontario Region Annual Meeting. June 29-30. Winsor, Ontario, Canada.
GENETIC DIVERSITY OF A WORLD-WIDE COLLECTION OF PUCCINIA TRITICINA FROM DURUM WHEAT USING SIMPLE SEQUENCE REPEAT MARKERS AND RDNA SEQUENCE -
Ordonez, M.E., Kolmer, J.A., Szabo, L.J. 2005. Genetic diversity of a world-wide collection of Puccinia triticina from durum wheat using simple sequence repeat markers and rDNA sequence [abstract]. Phytopathology. 95:S78.
DECIPHERING SPECIES COMPLEXES AND THE EVOLUTIONARY IMPLICATIONS -
Szabo, L.J. 2005. Deciphering species complexes and the evolutionary implications. Inoculum. 56:56.
RUST FUNGI-SHIFTY PATHOGENS: MOLECULAR METHODS FOR RAPID DETECTION AND IDENTIFICATION -
Szabo, L.J., Barnes, C.W. 2005. Rust fungi-shifty pathogens: molecular methods for rapid detection and identification. Phytopathology. 95:S166.
DETECTION OF PUCCINIA GRAMINIS SPORES IN RAIN USING A REAL-TIME PCR ASSAY -
Barnes, C.W., Szabo, L.J., Johnson, J.L., Bowersox, V.C., Krupa, S.V., Gay, D.A., Harlin, K.S. 2005. Detection of Puccinia graminis spores in rain using a real-time PCR assay. Phytopathology. 95:S6.
DEVELOPMENT OF FULL-LENGTH CDNA LIBRARIES FOR EST ANALYSIS OF PUCCINIA GRAMINIS F.SP. TRITICI -
Zhong, S., Szabo, L.J., Jeong, J.S., Mitchell, T.K., Dean, R.A., Cuomo, C.A. 2005. Development of full-length cDNA libraries for EST analysis of Puccinia graminis f.sp. tritici. Phytopathology. 95:S118.
CEREAL DISEASE LAB UPDATE AND A PROPOSAL FOR A LEAF RUST SCREENING NURSERY -
Proceedings for the Eastern Wheat Workers and Southern Small Grain Workers Workshop. 2005. p.43-47.
STEM RUST OF SMALL GRAINS AND GRASSES CAUSED BY PUCCINIA GRAMINIS -
Leonard, K.L., Szabo, L.J. 2005. Pathogen profile: Stem rust of small grains and grasses caused by Puccinia graminis. Molecular Plant Pathology. 6:99-111.
DEVELOPMENT OF SIMPLE SEQUENCE REPEAT MARKERS FOR PUCCINIA GRAMINIS AND P. TRITICINA -
Szabo, L.J., Nguyen, K.P. 2005. Development of simple sequence repeat markers for Puccinia graminis and P. triticina. Fungal Genetics Newsletter. 52:S72.
IN SEARCH OF THE CORRECT NAME FOR LEAF RUST OF CULTIVATED WHEAT -
Szabo, L.J., Markova, J., Anikster, Y., Eilam, T., Manisterski, J., Yehuda, P.B. 2004. In search of the correct name for leaf rust of cultivated wheat [abstract]. In: 11th International Cereal Rusts and Mildews Conference Proceedings, August 22-27, 2004, Norwich, England. Abstract 1.51. Available: http://www.crpmb.org/icrpmc11/abstracts.htm.
MOLECULAR CHARACTERIZATION OF THE RIBOSOMAL PROTEIN L25 FROM THE STEM RUST FUNGUS -
Lin, K.C., Bushnell, W.R., Szabo, L.J. 2005. Molecular characterization of the ribosomal protein L25 from the stem rust fungus. Plant Pathology Bulletin. 13:251-260.
PUCCINIA RECONDITA, LEAF RUST OF CEREAL AND GRASSES: WHO'S WHO? -
Szabo, L.J., Anikster, Y., Markova, J. 2004. Puccinia recondita, leaf rust of cereal and grasses: Who's who? Phytopathology. 94:S125.
DETECTION OF FOUR RUST PATHOGENS OF CEREALS AND GRASSES USING REAL-TIME PCR -
Barnes, C.W., Szabo, L.J., Nguyen, K.P. 2004. Detection of four rust pathogens of cereals and grasses using real-time PCR. Phytopathology. 94:S6.
UREDINIOMYCETIDAE: RUSTS AND THEIR CLOSE RELATIVES -
Frieders, E.M., McLaughlin, D.J., Szabo, L.J., Swann, E.C. 2004. Urediniomycetidae: Rusts and their close relatives [abstract]. Inoculum. 55:14.
INBREEDING LEVELS OF TWO USTILAGO MAYDIS POPULATIONS -
Barnes, C.W., Szabo, L.J., May, G., Groth, J.V. 2004. Inbreeding levels of two Ustilago maydis populations. Mycologia. 96:1236-1244.
GENETIC VARIATION, DISTRIBUTION, AND THE DEVELOPMENT OF VIRULENCE ON LR26 IN POPULATIONS OF THE WHEAT LEAF RUST FUNGUS PUCCINIA TRITICINA -
Kosman, E., Pardes, E., Szabo, L.J., Anikster, Y., Manisterski, J., Yehuda, B.P., Sharon, A. 2004. Genetic variation, distribution, and the development of virulence on lr26 in populations of the wheat leaf rust fungus puccinia triticina. Phytopathology.
MITOSIS IN THE YEAST PHASE OF THE BASIDIOMYCETES BENSINGTONIA YUCCICOLA AND STILBURN VULGARE AND ITS PHYLOGENETIC IMPLICATIONS -
McLaughlin, D.L., Hanson, Jr., R.W., Frieders, E.M., Swann, E.C., Szabo, L.J. 2004. Mitosis in the yeast phase of the basidiomycetes Bensingtonia yuccicola and Stilbum vulgare and its phylogenetic implications. American Journal of Botany. 91:808-815.
TEMPORAL ACCUMULATION OF BARLEY DEFENSE GENE TRANSCRIPTS INDUCED BY BLUMERIA GRAMINIS S.SP. HORDEI IN ISOLINES CONTAINING MLA1, MLA12, MLP, MLG AND MLA5 RESISTANCE GENES -
Kruger, W.M., Szabo, L.J., Zeyen, R.J. 2003. Temporal accumulation of barley defense gene transcripts induced by Blumeria graminis f.sp. hordei in isolines containing Mla1, Mla12, Mlp, Mlg, and Mla5 resistance genes. Physiological and Molecular Plant Pathology. 63:167-178.
CHARACTERIZATION AND SPATIAL DISTRIBUTION OF APHANOMYCES IN SUGARBEET FIELDS -
Dyer, A.T., Szabo, L.J., Windels, C.E. 2004. Characterization and spatial distribution of Aphanomyces in sugarbeet fields. Journal of Sugarbeet Research. 41:1-16.
MORPHOLOGY, LIFE-CYCLE BIOLOGY AND DNA ANALYSIS OF RUST ON GARLIC AND CHIVES FROM CALIFORNIA -
Anikster, Y., Szabo, L.J., Eilam, T., Manisterski, J., Koike, S.T., Bushnell, W.R. 2004. Morphology, life-cycle biology and DNA analysis of rust on garlic and chives from California. Phytopathology. 94:569-577.
DEVELOPMENT OF REAL-TIME PCR ASSAYS FOR THE DETECTION OF STEM AND LEAF RUST PATHOGENS OF WHEAT -
SZABO, L.J., BARNES, C.W., NGUYEN, K.P. DEVELOPMENT OF REAL-TIME PCR ASSAYS FOR THE DETECTION OF STEM AND LEAF RUST PATHOGENS OF WHEAT. PHYTOPATHOLOGY. 2003. v. 93. p. S82.
DEVELOPMENT OF REAL-TIME PCR ASSAYS FOR THE DETECTION OF STEM AND LEAF RUST PATHOGENS OF WHEAT -
SZABO, L.J. DEVELOPMENT OF REAL-TIME PCR ASSAYS FOR THE DETECTION OF STEM AND LEAF RUST PATHOGENS OF WHEAT. FUNGAL GENETICS NEWSLETTER. 2003. v. 50 p. S469
ASCOMYCETOUS MITOSIS IN BASIDIOMYCETOUS YEASTS: ITS EVOLUTIONARY IMPLICATIONS -
MCLAUGHLIN, D.J., HANSON, R.W., FRIEDERS, E.M., SWANN, E.C., SZABO, L.J. ASCOMYCETOUS MITOSIS IN BASIDIOMYCETOUS YEASTS: ITS EVOLUTIONARY IMPLICATIONS. INTERNATIONAL CONGRESS OF MYCOLOGY PROCEEDINGS AND ABSTRACTS. 2002. The 7th International Mycological Congress Book of Abstracts. 727.
RUST FUNGI: AN OBLIGATE-PARASITIC LIFE STYLE -
SZABO, L.J. RUST FUNGI: AN OBLIGATE-PARASITIC LIFE STYLE. AMERICAN PHYTOPATHOLOGICAL SOCIETY ABSTRACTS. 2002. Phytopathology. v. 92. p. S103.
MOLECULAR VARIABILITY AND PATHOGENESIS OF PHOMA MEDICAGINIS VAR. MEDICAGINIS ISOLATES FROM MINNESOTA -
CASTELL, C., SAMAC, D., SZABO, L.J. MOLECULAR VARIABILITY AND PATHOGENESIS OF PHOMA MEDICAGINIS VAR. MEDICAGINIS ISOLATES FROM MINNESOTA. AMERICAN PHYTOPATHOLOGICAL SOCIETY ABSTRACTS. 2002. v. 92. p. S12.
PHYLOGENETIC ANALYSIS OF THE PUCCINIA ANDROPOGONIS COMPLEX -
SZABO, L.J., ROELFS, A. PHYLOGENETIC ANALYSIS OF THE PUCCINIA ANDROPOGONIS COMPLEX. AMERICAN PHYTOPATHOLOGICAL SOCIETY ABSTRACTS. 2002. v. 92. p. S79.
HIDDEN ROBBERS: THE ROLE OF FUNGAL HAUSTORIA IN PARASITISM OF PLANTS -
SZABO, L.J., BUSHNELL, W.R. HIDDEN ROBBERS: THE ROLE OF FUNGAL HAUSTORIA IN PARASITISM OF PLANTS. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES. 2001. v. 94. p. 7654-7655.
PYCNIAL NECTAR OF RUST FUNGI INDUCES CAP FORMATION ON PYCNIOSPORES OF OPPOSITE MATING TYPE -
AINKSTER, Y., ELIAN, T., MITLEMAN, L., SZABO, L.J., BUSHNELL, W.R. PYCNIAL NECTAR OF RUST FUNGI INDUCES CAP FORMATION ON PYCNIOSPORES OF OPPOSITE MATING TYPE. INTERNATIONAL CONFERENCE ON GENETICS AND CELLULAR BIOLOGY. 2001. Abstract p. 9.
PROGRESS TOWARDS CLONING AVIRULENCE GENES IN THE WHEAT STEM RUST FUNGUS, PUCCINIA GRAMINIS -
SZABO, L.J., BALMUTH, A.L. PROGRESS TOWARDS CLONING AVIRULENCE GENES IN THE WHEAT STEM RUST FUNGUS, PUCCINIA GRAMINIS. FUNGAL GENETICS NEWSLETTER. 2001. v. 49. p. S287.
AN IN VIVO TRANSIENT EXPRESSION ASSAY FOR ANTIFUNGAL GENES IN BARLEY COLEOPTILES INFECTED WITH BLUMERIA GRAMINIS -
GENE ACTION AND LINKAGE OF AVIRULENCE GENES TO DNA MARKERS IN THE RUST FUNGUS, PUCCINIA GRAMINIS -
TRANSIENT EXPRESSION OF ANTIFUNGAL GENES REDUCES RATE OF BLUMERIA GRAMINIS INFECTION IN EPIDERMAL CELLS OF BARLEY COLEOPTILES -
STEM RUST FROM SOUTH AMERICA AND EUROPE -
PYCNIAL NECTAR OF RUST FUNGI INDUCES CAP FORMATION ON PYCNIOSPORES OF OPPOSITE MATING TYPE -
PHYLOGENETIC RELATIONSHIPS AMONG SOME CERCOSPOROID ANAMORPHS OF MYCOSPAERELLA BASED ON RDNA SEQUENCE ANALYSIS -
POPULATION STRUCTURE OF APHANOMYCES COCHLIOIDES IN MINNESOTA, NORTH DAKOTA AND TEXAS -
OVEREXPRESSION OF HOST RESPONSE GENES: EFFECTS ON CELLULAR RESPONSES TO FUNGAL PATHOGENS -
GENETIC MAPPING OF AVIRULENCE GENES IN THE WHEAT STEM RUST FUNGUS, PUCCINIA GRAMINIS -
GENETIC ENGINEERING OF DISEASE RESISTANCE IN CEREALS -
PYCNIAL NECTAR OF UREDINALES INDUCES FORMATION OF CAPS ON PYCNIOSPORES OF OPPOSITE MATING TYPE -
GENETIC DIVERSITY AND SPATIAL DISTRIBUTION OF APHANOMYCES IN MINNESOTA AND NORTH DAKOTA SUGARBEET FIELDS -
TEMPORAL ACCUMULATION PATTERNS OF HOST RESPONSE GENE TRANSCRIPTS IN RELATION TO RESISTANT REACTIONS IN OAT INOCULATED WITH PUCCINIA GRAMINIS -
MAPPING AVIRULENCE GENES IN THE RUST FUNGUS, PUCCINIA GRAMINIS -
MOLECULAR PHYLOGENETIC ANALYSIS OF BARLEY LEAF RUSTS AND RELATED LEAF RUSTSOF GRASSES AND LILIACEAE, BASED ON RDNA SEQUENCE ANALYSIS -
A TRANSIENT EXPRESSION ASSAY TO EVALUATE THE ABILITY OF INTRODUCED HOST RESPONSE GENES TO CONFER DISEASE RESISTANCE IN CEREALS -
ISOLATION AND EXPRESSION OF HOST RESPONSE GENES ASSOCIATED WITH RESISTANCE IN OAT AGAINST PUCCINIA GRAMINIS -
ISOLATION AND EXPRESSION OF A HOST RESPONSE GENE FAMILY ENCODING THAUMATIN-LIKE PROTEINS IN INCOMPATIBLE OAT-STEM RUST FUNGUS INTERACTIONS -
EXPRESSION OF GENES ENCODING THAUMATIN-LIKE PROTEINS IS ASSOCIATED WITH RESISTANCE IN OAT AGAINST PUCCINIA GRAMINIS -
MAPPING AVIRULENCE GENES IN THE RUST FUNGUS -
MOLECULES AND MORPHOLOGY IN BASIDIOMYCETE PHYLOGENY -
PHYLOGENETIC RELATIONSHIPS IN AURICULARIACEOUS BASIDIOMYCETES: EFFICIENCY COMPARISON OF FOUR RECONSTRUCTION ALGORITHMS -
HIGH-GC PRIMERS ARE USEFUL IN RAPD ANALYSIS OF FUNGI -
EARLY DETECTION OF SYSTEMIC RUST INFECTIONS OF DYERS WOAD (ISATIS TINCTORI L.) USING THE POLYMERASE CHAIN REACTION -
Last Modified: 8/26/2016
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