Research Interests

I have been involved with plant pathology research and disease control strategies since 1977 when I attended the University of Minnesota as an undergraduate in the plant pathology department. During my professional career I have worked at several locations including Minnesota and Illinois, and overseas in Nigeria, Taiwan, and Zambia. I have visited over 25 countries professionally and have participated in many international and regional meetings.

The long-term goal of my program is to conceive and conduct applied and basic research in three areas of soybean pathology that will aid in efficient disease control strategies. The first area is to conduct research on the biology and ecology of soybean pathogens with emphasis on their pathogenic variation. The second area is to study basic epidemiological concepts related to disease development and spread, and how pathogens and the diseases they cause affect the quality and quantity of soybean yields. The third area is to investigate the existence, nature and genetics of host resistance in soybean germplasm and in other Glycine species.

Recent Refereed Publications

2009

• Calla, B., T. Voung, O. Radwin, G.L. Hartman, and C. S.J. 2009. Gene expression profiling soybean stem tissue early response to Sclerotinia sclerotiorum and in silico mapping in relation to resistance markers. Plant Genome (in press).
• Chakraborty, N., J. Curley, R.D. Frederick, D.L. Hyten, R.L. Nelson, G.L. Hartman, and B.W. Diers. 2009. Mapping and confirmation of a new allele at Rpp1 from soybean PI 504538A conferring RB lesion type resistance to soybean rust. Crop Science (in press).
• Cui, D., Q. Zhang, M. Li, Y. Zhao, and G.L. Hartman. 2009. Detection of soybean rust using a multispectral image sensor. Sens. Instrum. Food Qual. Saf. or Sens. & Instrumen. Food Qual. DOI 10.1007/s11694-009-9070-8:(in press).
• Goradia, L., G.L. Hartman, and S.L. Daniel. 2009. Evaluation of glyphosate-resistant soybean cultivars for resistance to bacterial pustule. European Journal of Plant Pathology 124:331-335.
• Hartman, G.L., and J.S. Haudenshield. 2009. Movement of Phakopsora pachyrhizi (soybean rust) urediniospores by non-conventional means. European Journal of Plant Pathology 123:225-228.
• Hill, C.B., K.S. Kim, L. Crull, B.W. Diers, and G.L. Hartman. 2009. Inheritance of resistance to the soybean aphid in soybean PI200538. Crop Science (in press).
• Li, S., G.L. Hartman, and Y. Chen. 2009. Evaluation of aggressiveness of Fusarium virguliforme isolates that cause sudden death syndrome. Journal of Plant Pathlogy 91:77-86.
• Mueller, T.A., M.R. Miles, W. Morel, J.J. Marios, D.L. Wright, R.C. Kemerait, C. Levy, and G.L. Hartman. 2009. Effect of fungicide and timing of application on soybean rust severity and yield. Plant Disease 93:243-248.
• Paul, C., and G.L. Hartman. 2009. Sources of soybean rust resistance challenged with single-spored isolates of Phakopsora pachyrhizi collected from the USA. Crop Science:(in press).
• Pham, T.A., M.R. Miles, R.D. Frederick, C.B. Hill, and G.L. Hartman. 2009. Differential responses of resistant soybean genotypes to ten isolates of Phakopsora pachyrhizi. Plant Disease 93:224-228.
• Twizeyimana, M., P.S. Ojiambo, K. Sonder, T. Ikotun, G.L. Hartman, and R. Bandyopadhyay. 2009. Pathogenic variation of Phakopsora pachyrhizi infecting soybean in Nigeria. Phytopathology 99:353-361.
• Wille, B.D., and G.L. Hartman. 2009. Two species of symbiotic bacteria present in the soybean aphid (Hemiptera: Aphididae). Environmental Entomology 38:110-115.

2008

• Li, S., G.L. Hartman, L.L. Domier, and D. Boykin. 2008. Quantification of Fusarium solani f. sp. glycines isolates in soybean roots by colony-forming unit assays and real-time quantitative PCR. Theoretical and Applied Genetics 117:343-352.
• Li, S., A. Lygin, O. Zernova, V. Lozovaya, G.L. Hartman, and J.M. Widholm. 2008. Genotype response of soybean (Glycine max) whole plants and hairy roots to Fusarium solani f. sp. glycines infection. Soybean Science 27:275-282.
• Li, Y., J. Zou, M. Li, D.D. Bilgin, L.O. Vodkin, G.L. Hartman, and S.J. Clough. 2008. Soybean defense responses to the soybean aphid. New Phytologist 79:185-195.
• Miles, M.R., W. Morel, J.D. Ray, J.R. Smith, R.D. Frederick, and G.L. Hartman. 2008. Adult plant evaluation of soybean accessions for resistance to Phakopsora pachyrhizi in the field and greenhouse in Paraguay. Plant Disease 92:96-105.
• Slaminko, T.L., M.R. Miles, J.J. Marios, D.L. Wright, and G.L. Hartman. 2008. Hosts of Phakopsora pachyrhizi identified in field evaluations in Florida Plant Health Progress, Vol. doi:10.1094/PHP-2008-1103-01-RS.
• Slaminko, T.L., M.R. Miles, R.D. Frederick, M.R. Bonde, and G.L. Hartman. 2008. New legume hosts of Phakopsora pachyrhizi based on greenhouse evaluations. Plant Disease 92:767-771.
• Twizeyimana, M., P.S. Ojiambo, T. Ikotun, J.L. Ladipo, G.L. Hartman, and R. Bandyopadhyay. 2008. Evaluation of soybean germplasm for resistance to soybean rust (Phakopsora pachyrhizi) in Nigeria. Plant Disease 92:947-952.
• Vuong, T., B.W. Diers, and G.L. Hartman. 2008. Identification of QTL for resistance to Sclerotinia Stem Rot (Sclerotinia sclerotiorum) in plant introduction 194639. Crop Science 48:2209-2214.

2007

• Bandyopadhyay, R., Ojiambo, P. S., Twizeyimana, M., Asafo-Adjei, B., Frederick, R. D., Pedley, K. F., Stone, C. L., and Hartman, G. L. 2007. First report of soybean rust caused by Phakopsora pachyrhizi in Ghana. Plant Disease 91:1057.
• Daniel, S. L., Hartman, G. L., Wagner, E. D., and Plewa, M. J. 2007. Mammalian cell cytotoxicity analysis of soybean rust fungicides. Bulletin Environmental Contamination Toxicology 78:474-478.
• Domier, L. L., Steinlage, T. A., Hobbs, H. A., Yang, Y., Herrera-Rodriguez, G., Haudenshield, J. S., McCoppin, N. K., and Hartman, G. L. 2007. Similarities in seed and aphid transmission among Soybean mosaic virus isolates. Plant Disease 91:546-550.
• Farias Neto, A. F., Hashmi, R., Schmidt, M., Carlson, S. R., Hartman, G. L., Li, S., Nelson, R. L., and Diers, B. W. 2007. Mapping and confirmation of a new sudden death syndrome resistance QTL on linkage group D2 from the soybean genotypes PI 567374 and ‘Ripley’. Molecular Breeding 20:53-62.
• Hartman, G. L., Hines, R. A., Faulkner, C. D., Lynch, T. N., and Pataky, N. 2007. Late season occurrence of soybean rust caused by Phakopsora pachyrhizi on soybean in Illinois. Plant Disease 91:466. http://apsjournals.apsnet.org/doi/abs/10.1094/PDIS-91-4-0466B
• Hyten, D. L., Hartman, G. L., Nelson, R. L., Frederick, R. D., Concibido, V. C., and Cregan, P. B. 2007. Map location of the Rpp1 locus that confers resistance to soybean rust in soybean. Crop Science 47:837-838.
• Li, Y., Hill, C. B., Carlson, S. R., Diers, B. W., and Hartman, G. L. 2007. Soybean aphid resistance genes in the soybean cultivars Dowling and Jackson map to linkage group M. Molecular Breeding 19:25-34.
• Lim, H. S., Ko, T. S., Hobbs, H. A., Lambert, K. N., Yu, J. M., McCoppin, N. K., Korban, S. S., Hartman, G. L., and Domier, L. L. 2007. Soybean mosaic virus helper component-protease alters leaf morphology and reduces seed production in transgenic soybean plants. Phytopathology 97:366-372.
• Miles, M. R., Levy, C., Morel, W., Mueller, T. A., Steinlage, T., van Rij, N. C., Frederick, R. D., and Hartman, G. L. 2007. International fungicide efficacy trials for the management of soybean rust. Plant Disease 91:1450-1458.
• Miles, M. R., Pastor-Corrales, M. A., Hartman, G. L., and Frederick, R. D. 2007. Differential response of common bean cultivars to Phakopsora pachyrhizi. Plant Disease 91:698-704.
• Ojiambo, P. S., Bandyopadhyay, R., Twizeyimana, M., Lema, A., Frederick, R. D., Pedley, K. F., Stone, C. L., and Hartman, G. L. 2007. First report of rust caused by Phakopsora pachyrhizi on soybean in Democratic Republic of Congo. Plant Disease 91:1204.
• Patzoldt, M. E., Tyagi, R. K., Hymowitz, T., Miles, M. R., Hartman, G. L., and Frederick, R. D. 2007. Soybean rust resistance derived from Glycine tomentella in amphiploid hybrid lines. Crop Science 47:158-161.
• Thekkeveetil, T., Hobbs, H. A., Wang, Y., Kridelbaugh, D., Donnelly, J., Hartman, G. L., and Domier, L. L. 2007. First report of Soybean dwarf virus in soybean in northern Illinois. Plant Disease 91:1686.
• Twizeyimana, M., Ojiambo, P. S., Ikotun, T., Paul, C., Hartman, G. L., and Bandyopadhyay, R. 2007. Comparison of field, greenhouse, and detached leaf evaluations of soybean germplasm for resistance to Phakopsora pachyrhizi. Plant Disease 91:1161-1169.

2006

• Bent, A. F., Hoffman, T. K., Schmidt, J. S., Hartman, G. L., Hoffman, D. D., Xue, P., and Tucker, M. L. 2006. Disease- and performance-related traits of ethylene-insensitive soybean. Crop Science 46:893-901.
• Bonde, M. R., Nester, S. E., Austin, C. N., Stone, C. L., Frederick, R. D., Hartman, G. L., and Miles, M. R. 2006. Evaluation of virulence of Phakopsora pachyrhizi and P. meibomiae isolates. Plant Disease 90:708-716.
• Diers, B. W., Kopisch-Obuch, F. J., Hoffman, D. D., Hartman, G. L., Pedersen, W. L., Grau, C. R., and Wang, D. 2006. Registration of AxN-1-55 soybean germplasm with partial resistance to Sclerotinia stem rot. Crop Science 46:1403-1404.
• Farias Neto, A. F., Hartman, G. L., Pedersen, W. L., Li, S., Bollero, G. A., and Diers, B. W. 2006. Irrigation and inoculation treatments that increase the severity of soybean sudden death syndrome in the field. Crop Science 46:2547-2554.
• Ferro, C. R., Hill, C. B., Miles, M. R., and Hartman, G. L. 2006. Evaluation of soybean cultivars with the Rps1k gene for partial resistance or field tolerance to Phytophthora sojae. Crop Science 46:2427-2436.
• Gao, X., Jackson, T. A., Hartman, G. L., and Niblack, T. L. 2006. Interactions between soybean cyst nematode and Fusarium solani f. sp. glycines based on greenhouse factorial experiments Phytopathology 96:1409-1415.
• Harmon, C. L., Harmon, P. F., Mueller, T. A., Marois, J. J., and Hartman, G. L. 2006. First report of Phakopsora pachyrhizi telia on kudzu in the United States. Plant Disease 90:380.
• Hill, C. B., Hartman, G. L., Esgar, R., and Hobbs, H. A. 2006. Field evaluation of green stem disorder in soybean cultivars. Crop Science 46:879-885.
• Hill, C. B., Li, Y., and Hartman, G. L. 2006. A single dominant gene for resistance to the soybean aphid in the soybean cultivar Dowling. Crop Science 46:1601-1605.
• Hill, C. B., Li, Y., and Hartman, G. L. 2006. Soybean aphid resistance in soybean Jackson is controlled by a single dominant gene. Crop Science 46:1606-1608.
• Hobbs, H. A., Hill, C. B., Grau, C. R., Koval, N. C., Wang, Y., Pedersen, W. L., Domier, L. L., and Hartman, G. L. 2006. Green stem disorder of soybean. Plant Disease 90:513-518.
• Isard, S. A., Dufault, N. S., Miles, M. R., Hartman, G. L., Russo, J. M., De Wolf, E. D., and Morel, W. 2006. The effect of solar irradiance on the mortality of Phakopsora pachyrhizi urediniospores. Plant Disease 90:941-945.
• Lozovaya, V. V., Lygin, A. V., Zernova, O. V., Li, S., Widholm, J. M., and Hartman, G. L. 2006. Lignin degradation by Fusarium solani f. sp. glycines. Plant Disease 90:77-82.
• Lozovaya, V. V., Lygin, A. V., Zernova, O. V., Ulanov, A. V., Li, S., Hartman, G. L., and Widholm, J. M. 2006. Modification of phenolic metabolism in soybean hairy roots through down regulation of chalcone synthase or isoflavone synthase. Planta 225:665-679.
• Lynch, T. N., Marois, J. J., Wright, D. L., Harmon, P. F., Miles, M. R., and Hartman, G. L. First report of soybean rust caused by Phakopsora pachyrhizi on Phaseolus spp. in the United States. Plant Disease 90:970.
• Miles, M. R., Frederick, R. D., and Hartman, G. L. 2006. Evaluation of soybean germplasm for resistance to Phakopsora pachyrhizi. Plant Health Progress doi 10.1094/PHP-2006-0104-01-RS.
• Miles, M. R., Hartman, G. L., and Levy, C. 2006. Control of soybean rust in a determinate cultivar at the Rattray Arnold Research Station, Zimbabwe, 2004-05. F&N Tests 61:FC003.
• Miles, M. R., Hartman, G. L., and Levy, C. 2006. Control of soybean rust in an indeterminate cultivar at the Gwebi Variety Testing Center, Zimbabwe, 2004-05. F&N Tests 61:FC004.
• Miles, M. R., Hartman, G. L., van Rij, N. C., Tweer, S., du Preez, E. D., and Lawrance, K. F. 2006. Evaluations of fungicides for control of soybean rust in the cultivar 'Prima 2000' near Cedara, South Africa, 2004-05. F&N Tests 61:FC002.
• Mueller, T. A., Miles, M. R., Hartman, G. L., and Morel, W. 2006. Evaluations of fungicides for the control of soybean rust at Bella Vista, Paraguay, 2004-2005.  F&N Tests 61:FC007.
• Wang, Y., Hobbs, H. A., Bowen, C. R., Bernard, R. L., Hill, C. B., Haudenshield, J. S., Domier, L. L., and Hartman, G. L. 2006. Evaluation of soybean cultivars, ‘Williams’ isogenic lines, and other selected soybean lines for resistance to two Soybean mosaic virus strains. Crop Science 46:2649-2653.

2005

• Bradley, C. A., Hartman, G. L., Mueller, D. S., Hoffman, D. D., Nickell, A. D., and Pedersen, W. L. 2005. Genetic analysis of partial resistance to Rhizoctonia solani in the soybean cultivar 'Savoy'. Canadian Journal of Plant Pathology 27:137-142.
• du Preez, E. D., van Rij, N. C., Lawrance, K. F., Miles, M. R., and Frederick, R. D. 2005. First report of soybean rust caused by Phakopsora pachyrhizi on dry beans in South Africa. Plant Dis. 89:206.
• Hartman, G. L., Miles, M. R., and Frederick, R. D. 2005. Breeding for resistance to soybean rust. Plant Disease 89:664-666.
• Lim, H.-S., Ko, T.-S., Lambert, K. N., Kim, H.-G., Korban, S. S., Hartman, G. L., and Domier, L. L. 2005. Soybean mosaic virus helper component-protease enhances somatic embryo production and stabilizes transgene expression in soybean. Plant Physiology and Biochemistry 43:1014-1021.
• Yorinori, J. T., Paiva, W. M., Frederick, R. D., Costamilan, L. M., Bertagnolli, P. F., Hartman, G. L., and Nunes Jr., J. 2005. Epidemics of soybean rust (Phakopsora pachyrhizi) in Brazil and Paraguay from 2001 to 2003. Plant Disease 89:675-677.
• Wang, Y., Hobbs, H. A., Hill, C. B., Domier, L. L., Hartman, G. L., and Nelson, R. L. 2005. Evaluation of ancestral lines of U.S. soybean cultivars for resistance to four soybean viruses. Crop Science 45:639-644.

2004

• Gao, X., T.A. Jackson, K.N. Lambert, S. Li, G. L. Hartman, and T.L. Niblack. 2004. Detection and quantification of Fusarium solani f. sp. glycines in soybean roots with real-time quantitative polymerase chain reaction. Plant Dis. 88:1372-1380.
• Hartman, G. L., Y. H. Huang, and S. Li. 2004. Phytotoxicity of Fusarium solani culture filtrates from soybean and other hosts assayed by stem cuttings. Australasian Plant Pathology 33:9-15.
• Hill, C.B., Y. Li, and G. L. Hartman. 2004. Resistance of Glycine species and various cultivated legumes to the soybean aphid (Homoptera: Aphididae). J. of Econ. Entomol. 97:1071-1077.
• Hill, C.B., Y. Li, and G. L. Hartman. 2004. Resistance to the soybean aphid in soybean germplasm. Crop Science 44:98-106.
• Kull, L. S., W. L. Pedersen, and G. L. Hartman. 2004. Mycelial compatibility and aggressiveness of Sclerotinia sclerotiorum. Plant Dis. 88:325-332.
• Li, S., N.C. Kurtzweil, C. R. Grau, and G. L. Hartman. 2004. Occurrence of stem canker (Diaporthe phaseolorum var. meridionalis) on soybean in Wisconsin. Plant Dis. 88:576.
• Li, Y., C.B. Hill, and G. L. Hartman. 2004. The effect of three resistant soybean genotypes on the fecundity, mortality, and maturation of the soybean aphid, Aphis glycines (Homoptera: Aphididae). J. of Econ. Entomol. 97:1106-1111.
• Lozovaya, V. V. , A. V. Lygin, S. Li, G. L. Hartman, and J. M. Widholm. 2004. Biochemical response of soybean roots to Fusarium solani f. sp. glycines infection. Crop Science 44:819-826.
• Lozovaya, V.V., A.V. Lygin, O.V. Zernova, S. Li, G. L. Hartman, and J. M. Widholm. 2004. Isoflavonoid accumulation in soybean hairy roots upon treatment with Fusarium solani. Plant Phys. & Bioch. 42:671-679.
• Vuong, T.D., D. D. Hoffman, B.W. Diers, J.F. Miller, J. R. Steadman, and G. L. Hartman. 2004. Evaluation of soybean, dry bean, and sunflower for resistance to Sclerotinia sclerotiorum. Crop Science 44:777-783.

2003

• Bradley, C. A., G. R. Noel, C. R. Grau, J.M. Gaska, N.C. Kurtweil, MacGuidwin, G. L. Hartman, L. M. Wax, and W. L. Pedersen. 2003. Impact of herbicides on Heterodera glycines susceptible and resistant soybean cultivars. Journal of Nematology 35:88-97.
• Domier, L. L., I.J. Latorre, T.A. Steinlage, N. McCoppin, and G. L. Hartman. 2003. Variability and transmission of Aphis glycines of North American and Asian soybean mosaic virus isolates. Archives of Virology 148:1925-1941.
• Hobbs, H.A., G. L. Hartman, Y. Wang, C.B. Hill, R.L. Bernard, W. L. Pedersen, and L. L. Domier. 2003. Occurrence of seed coat mottling in soybean plants inoculated with Bean pod mottle virus and Soybean mosaic virus. Plant Dis. 87:1333-1336.
• Kull, L. S., T. D. Vuong, K. S. Powers, K. M. Eskridge, J. R. Steadman, and G. L. Hartman. 2003. Evaluation of three resistance screening methods using six Sclerotinia sclerotiorum isolates and three entries of each soybean and dry bean. Plant Dis. 87:1471-1476.
• Li, S., and G. L. Hartman. 2003. Molecular detection of Fusarium solani f. sp. glycines in soybean roots and soil. Plant Path. 52:74-83.
• Mabry, T. R., H. A. Hobbs, T. A. Steinlage, B. B. Johnson, W. L. Pedersen, J. L. Spencer, E. Levine, S. A. Isard, L. L. Domier, and G. L. Hartman. 2003. Distribution of leaf-feeding beetles and Bean pod mottle virus (BPMV) in Illinois and transmission of BPMV in soybean. Plant Dis. 87:1221-1225.
• Miles, M.R., G. L. Hartman, C. Levy, and W. Morel. 2003. Current Status of soybean rust control by fungicides. Pesticide Outlook 14:197-200.
• Mueller, D. S., G. L. Hartman, R. L. Nelson, and W. L. Pedersen. 2003. Response of U.S. soybean cultivars and ancestral soybean lines to Fusarium solani f. sp. glycines. Plant Dis. 87:827-831.
• Vuong, T.D., and G. L. Hartman. 2003. Evaluation of soybean resistance to Sclerotinia stem rot using reciprocal grafting. Plant Dis. 87:154-158.

2002

• Bradley, C. A., G. L. Hartman, L. M. Wax, and W. L. Pedersen. 2002. Quality of harvested seed associated with soybean cultivars and herbicides under weed-free conditions. Plant Dis. 86:1036-1042.
• Bradley, C. A., G. L. Hartman, L. M. Wax, and W.L. Pedersen. 2002. Influence of herbicides on Rhizoctonia root and hypocotyl rot of soybean. Crop Protection 21:679-687.
• Hoffman, D. D., B. W. Diers, G. L. Hartman, C. D. Nickell, R. L. Nelson, W. L. Pedersen, E.R. Cober, A.E. Dorrance, G. L. Graef, J. R. Steadman, C. R. Grau, B. D. Nelson, L. E. del Rio, T. Helms, V. Poysa, I. Rajcan, and W. C. Stienstra. 2002. Selected soybean plant introductions with partial resistance to Sclerotinia sclerotiorum. Plant Dis. 86:971-980.
• Li, S., G. L. Hartman, B. B. Jarvis, and H. Tak. 2002. A Stachybotrys chartarum isolate from soybean. Mycopathologia 154:41-49.
• Mueller, D. S., A.E. Dorrance, R. Derksen, E. Ozkan, C. R. Grau, J.M. Gaska, J.E. Kurle, G. L. Hartman, C. A. Bradley, and W. L. Pedersen. 2002. Efficacy of fungicides on Sclerotinia sclerotiorum and their potential control of Sclertoinia stem rot on soybean. Plant Dis. 86:26-31.
• Mueller, D. S., G. L. Hartman, and W. L. Pedersen. 2002. Effect of crop rotation and tillage on Sclerotinia sclerotiorum on soybean. Canadian Journal of Plant Pathology 24:450-456.
• Mueller, D. S., G. L. Hartman, R. L. Nelson, and W. L. Pedersen. 2002. Evaluation of Glycine max germplasm for resistance to Fusarium solani f. sp. glycines. Plant Dis. 86:741-746.
• Mueller, D. S., S. Li, G. L. Hartman, and W. L. Pedersen. 2002. Use of aeroponic chambers and grafting to study partial resistance to Fusarium solani f. sp. glycines in soybean. Plant Dis. 86:1223-1226.
• Yu, G.Y., J. B. Sinclair, G. L. Hartman, and B.L. Bertagnolli. 2002. Production of iturin A by Bacillus amyloloiquefaciens supressing Rhizoctonia solani. Soil Biology & Biochemistry 34:955-963.

2001

• Bradley, C. A., Hartman, G. L., Nelson, R. L., Mueller, D. S., and Pedersen, W. L. 2001. Response of ancestral soybean lines and commercial cultivars to Rhizoctonia root and hypocotyl rot. Plant Disease 85:1091-1095.
• Gardner, M. E., Hymowitz, T., Xu, S. J., and Hartman, G. L. 2001. Physical map location of the Rps1-k allele in soybean. Crop Science 41:1435-1438.
• Gravert, C. E., Li, S., and Hartman, G. L. 2001. Occurrence of Diaporthe phaseolorum var. meridionalis on soybean in Illinois. Plant Disease 85:1211.
• Hartman, G. L., Domier, L. L., Wax, L. M., Helm, C. G., Onstad, D. W., Shaw, J. T., Solter, L. F., Voegtlin, D. J., D'Arcy, C. J., Gray, M. E., Steffey, K. L., Isard, S. A., and Orwick, P. L. 2001. Occurrence and distribution of Aphis glycines on soybeans in Illinois in 2000 and its potential control. Plant Health Progess doi:10.1094/PHP-2001-0205-01-HN:(On-line).
• Li, S., Bradley, C. A., Hartman, G. L., and Pedersen, W. L. 2001. First report of Phomopsis longicolla from velvetleaf causing stem lesions on inoculated soybean and velvetleaf plants. Plant Disease 85:1031.
• Kim, H. S., Hartman, G. L., Manandhar, J. B., Graef, G. L., Steadman, J. R., and Diers, B. W. 2000. Reaction of soybean cultivars to Sclerotinia stem rot in field, greenhouse, and laboratory evaluations. Crop Science 40:665-669.
• Leitz, R. A., Hartman, G. L., Pedersen, W. L., and Nickell, C. D. 2000. Races of Phytophthora sojae on soybean in Illinois. Plant Disease 84:487.
• Li, S., and Hartman, G. L. 2000. First report of Stachybotrys chartarum causing soybean root rot. Plant Disease 84:100.
• Li, S., Hartman, G. L., Lee, B. S., and Widholm, J. W. 2000. Identification of a stress-induced protein in stem exudates of soybean seedlings root-infected with Fusarium solani f. sp glycines. Plant Physiology and Biochemistry 38:803-809.
• Li, S., Tam, Y. K., and Hartman, G. L. 2000. Molecular differentiation of Fusarium solani f. sp glycines from other F. solani based on mitochondrial small subunit rDNA sequences. Phytopathology 90:491-497.

2000

• Hartman, G. L., M. E. Gardner, T. Hymowitz, and G. C. Naidoo. 2000. Evaluation of perennial Glycine species for resistance to soybean fungal pathogens that cause Sclerotinia stem rot and sudden death syndrome. Crop Science 40:545-549.
• Kim, H. S., G. L. Hartman, J. B. Manandhar, G. L. Graef, J. R. Steadman, and B. W. Diers. 2000. Reaction of soybean cultivars to Sclerotinia stem rot in field, greenhouse, and laboratory evaluations. Crop Science 40:665-669.
• Leitz, R. A., G. L. Hartman, W. L. Pedersen, and C. D. Nickell. 2000. Races of Phytophthora sojae on soybean in Illinois. Plant Dis. 84:487.
• Li, S. , Y. K. Tam, and G. L. Hartman. 2000. Molecular differentiation of Fusarium solani f. sp glycines from other F. solani based on mitochondrial small subunit rDNA sequences. Phytopathology 90:491-497.
• Li, S., and G. L. Hartman. 2000. First report of Stachybotrys chartarum causing soybean root rot. Plant Dis. 84:100.
• Li, S. , G. L. Hartman, B. S. Lee, and J. W. Widholm. 2000. Identification of a stress-induced protein in stem exudates of soybean seedlings root-infected with Fusarium solani f. sp glycines. Plant Physiology and Biochemistry 38:803-809.

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