HR job title
- Professor and Extension Specialist
- Contact Info
Isakeit, Thomas Professor and Extension Specialist
Positions
- Professor and Extension Specialist, Plant Pathology and Microbiology, College of Agriculture and Life Sciences
I respond to the needs of Texas growers with research and educational efforts aimed at solving their plant disease problems. I work on diseases of field crops, with emphasis on major diseases of cotton, corn, and sorghum in Texas. I also work on diseases of some vegetables, with emphasis on watermelons. With cotton, I am evaluating fungicides for control of Phymatotrichopsis root rot, in collaboration with agronomists, IPM agents and county agents throughout the state. For corn, I've emphasized aflatoxin control, through collaborative projects on host resistance with the corn breeder, Dr. Seth Murray and plant pathologist, Dr. Mike Kolomiets. I also do field studies on the use of atoxigenic strains for biological control of aflatoxin. My sorghum emphasis is management of metalaxyl-resistant sorghum downy mildew strains. I also collaborate with USDA-ARS plant pathologist, Dr. Louis Prom, on sorghum anthracnose and grain mold research.
While it is essential to respond to disease problems as they arise, I strive to anticipate how changes in agriculture in the future will affect plant diseases and approaches for their control. Information resulting from all these efforts is useless unless it is communicated to the clientele that need it- primarily farmers, which is the key component of my job. The ultimate purpose of my activities is to help maintain the viability of agriculture in Texas.
While it is essential to respond to disease problems as they arise, I strive to anticipate how changes in agriculture in the future will affect plant diseases and approaches for their control. Information resulting from all these efforts is useless unless it is communicated to the clientele that need it- primarily farmers, which is the key component of my job. The ultimate purpose of my activities is to help maintain the viability of agriculture in Texas.
- Overview
- Publications
- Research
- Works By Students
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Overview
Publications
selected publications
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academic article
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Hendricks, K., Hernandez, R. N., Roberts, P. D., Isakeit, T., & Alabi, O. J.
(2022).
First Report of watermelon crinkle leaf-associated virus 1 (WCLaV-1) and WCLaV-2 in Watermelon (Citrullus lanatus) Plants Coinfected with Cucurbit chlorotic yellows virus in Florida. Plant Disease.
106(1), PDIS06211141PDN-339.
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Hernandez, R. N., Isakeit, T., Al Rwahnih, M., Hernandez, R., & Alabi, O. J.
(2021).
First report of squash vein yellowing virus naturally infecting butternut squash (Cucurbita moschata) in Texas. Plant Disease.
105(9), 2738-2738.
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Hernandez, R. N., Isakeit, T., Al Rwahnih, M., Hernandez, R., & Alabi, O. J.
(2021).
First report of Cucurbit chlorotic yellows virus infecting cantaloupe (Cucumis melo L.) in Texas. Plant Disease.
105(10), 3313-3313.
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Hernandez, R. N., Isakeit, T., Al Rwahnih, M., Villegas, C., & Alabi, O. J.
(2021).
First report of watermelon crinkle leaf-associated virus 1 (WCLaV-1) and WCLaV-2 infecting watermelon (Citrullus lanatus) in the United States. Plant Disease.
105(7), 2025-2025.
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Prom, L. K., Ahn, E., Isakeit, T., & Magill, C.
(2019).
GWAS analysis of sorghum association panel lines identifies SNPs associated with disease response to Texas isolates of Colletotrichum sublineola. Theoretical and Applied Genetics.
132(5), 1389-1396.
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Murray, S. C., Mayfield, K., Pekar, J., Brown, P., Lorenz, A., Isakeit, T., ... Betran, J.
(2019).
Tx741, Tx777, Tx779, Tx780, and Tx782 Inbred Maize Lines for Yield and Southern United States Stress Adaptation. Journal of Plant Registrations.
13(2), 258-269.
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Singh, V., Masabni, J., Baumann, P., Isakeit, T., Matocha, M., Provin, T., ... Bagavathiannan, M.
(2019).
Activated charcoal reduces pasture herbicide injury in vegetable crops. Crop Protection.
117, 1-6.
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Pugh, N. A., Han, X., Collins, S. D., Thomasson, J. A., Cope, D., Chang, A., ... Rooney, W. L.
(2018).
Estimation of plant health in a sorghum field infected with anthracnose using a fixed-wing unmanned aerial system. 32(6), 861-877.
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Yang, C., Odvody, G. N., Thomasson, J. A., Isakeit, T., Minzenmayer, R. R., Drake, D. R., & Nichols, R. L.
(2018).
Site-Specific Management of Cotton Root Rot Using Airborne and High-Resolution Satellite Imagery and Variable-Rate Technology. Transactions of the ASABE.
61(3), 849-858.
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Isakeit, T., Commer, B., Shaw, B. D., Brown, M., & Neely, C.
(2017).
First Report of Leaf Spot of Barley Caused by Drechslera gigantea in the United States. Plant Disease.
101(8), 1548-1548.
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Sobol, N. L.
(2017).
Fighting Fines & Fees: Borrowing from Consumer Law to Combat Criminal Justice Debt Abuses. University of Colorado law review. University of Colorado (Boulder campus). School of Law.
88(4), 841-912.
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Fromme, D. D., Price, T., Lofton, J., Isakeit, T., Schnell, R., Dodla, S., ... Shannon, K.
(2017).
Effect of Fungicide Applications on Grain Sorghum (Sorghum bicolor L.) Growth and Yield. International Journal of Agronomy.
2017, 1-7.
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Wahl, N., Murray, S. C., Isakeit, T., Krakowsky, M., Windham, G. L., Williams, W. P., ... Betran, J.
(2017).
Identification of Resistance to Aflatoxin Accumulation and Yield Potential in Maize Hybrids in the Southeast Regional Aflatoxin Trials (SERAT). Crop Science.
57(1), 202-215.
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Wang, S., Park, Y., Yang, Y., Borrego, E. J., Isakeit, T., Gao, X., & Kolomiets, M. V.
(2017).
Seed-Derived Ethylene Facilitates Colonization but Not Aflatoxin Production by Aspergillus flavus in Maize. Frontiers in Plant Science.
8, 415.
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Cox, K. L., Meng, F., Wilkins, K. E., Li, F., Wang, P., Booher, N. J., ... Shan, L.
(2017).
TAL effector driven induction of a SWEET gene confers susceptibility to bacterial blight of cotton. Nature Communications.
8(1), 15588.
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Allen, T. W., Bradley, C. A., Sisson, A. J., Byamukama, E., Chilvers, M. I., Coker, C. M., ... Wrather, J. A.
(2017).
Soybean Yield Loss Estimates Due to Diseases in the United States and Ontario, Canada, from 2010 to 2014. Plant Health Progress.
18(1), 19-27.
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Alabi, O. J., Al Rwahnih, M., Isakeit, T., Gregg, L., & Jifon, J. L.
(2016).
First Report of Rottboellia yellow mottle virus Infecting Sorghum Sudangrass Hybrid (Sorghum bicolor x Sorghum bicolor var. sudanense) in North America. 100(6), 1255-1256.
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Sobol, N. L.
(2016).
Charging the Poor: Criminal Justice Debt & Modern-Day Debtors' Prisons. Maryland law review (Baltimore, Md. : 1936).
75(2), 486-540.
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Cuevas, H. E., Prom, L. K., Isakeit, T., & Radwan, G.
(2016).
Assessment of sorghum germplasm from Burkina Faso and South Africa to identify new sources of resistance to grain mold and anthracnose. Crop Protection.
79, 43-50.
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Yang, C., Odvody, G. N., Thomasson, J. A., Isakeit, T., & Nichols, R. L.
(2016).
Change detection of cotton root rot infection over 10-year intervals using airborne multispectral imagery. Computers and Electronics in Agriculture.
123, 154-162.
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Cribben, C. D., Thomasson, J. A., Ge, Y., Morgan, C. L., Yang, C., Isakeit, T., & Nichols, R. L.
(2016).
Plant pathology and nematology: Site-specific relationships between cotton root rot and soil properties. Journal of Cotton Science.
20(1), 67-75.
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Mueller, D. S., Wise, K. A., Sisson, A. J., Allen, T. W., Bergstrom, G. C., Bosley, D. B., ... Warner, F.
(2016).
Corn Yield Loss Estimates Due to Diseases in the United States and Ontario, Canada from 2012 to 2015. Plant Health Progress.
17(3), 211-222.
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Farfan, I., De La Fuente, G. N., Murray, S. C., Isakeit, T., Huang, P., Warburton, M., ... Kolomiets, M.
(2015).
Genome wide association study for drought, aflatoxin resistance, and important agronomic traits of maize hybrids in the sub-tropics. PLoS ONE.
10(2), e0117737-e0117737.
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Sobol, N. L.
(2015).
Lessons Learned from Ferguson: Ending Abusive Collection of Criminal Justice Debt. Margins (Baltimore, Md.).
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Prom, L. K., Perumal, R., Montes-Garcia, N., Isakeit, T., Odvody, G. N., Rooney, W. L., Little, C. R., & Magill, C.
(2015).
Evaluation of Gambian and Malian sorghum germplasm against downy mildew pathogen, Peronosclerospora sorghi, in Mexico and the USA. Journal of General Plant Pathology.
81(1), 24-31.
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Sikora, E. J., Allen, T. W., Wise, K. A., Bergstrom, G., Bradley, C. A., Bond, J., ... Zidek, J.
(2014).
A Coordinated Effort to Manage Soybean Rust in North America: A Success Story in Soybean Disease Monitoring. Plant Disease.
98(7), 864-875.
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De La Fuente, G. N., Murray, S. C., Isakeit, T., Park, Y., Yan, Y., Warburton, M. L., & Kolomiets, M. V.
(2013).
Characterization of genetic diversity and linkage disequilibrium of ZmLOX4 and ZmLOX5 loci in maize. PLoS ONE.
8(1), e53973-e53973.
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Rothrock, C. S., Winters, S. A., Miller, P. K., Gbur, E., Verhalen, L. M., Greenhagen, B. E., ... Garber, R. H.
(2012).
Importance of Fungicide Seed Treatment and Environment on Seedling Diseases of Cotton. Plant Disease.
96(12), 1805-1817.
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Yan, Y., Christensen, S., Isakeit, T., Engelberth, J., Meeley, R., Hayward, A., Emery, R., & Kolomiets, M. V.
(2012).
Disruption of OPR7 and OPR8 reveals the versatile functions of jasmonic acid in maize development and defense. The Plant Cell.
24(4), 1420-1436.
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Christensen, S., Borrego, E., Shim, W., Isakeit, T., & Kolomiets, M.
(2012).
Quantification of fungal colonization, sporogenesis, and production of mycotoxins using kernel bioassays. Journal of Visualized Experiments.
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Christensen, S., Borrego, E., Shim, W., Isakeit, T., & Kolomiets, M.
(2012).
Quantification of fungal colonization, sporogenesis, and production of mycotoxins using kernel bioassays. Journal of Visualized Experiments.
3727.
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Mayfield, K., Betran, F. J., Isakeit, T., Odvody, G., Murray, S. C., Rooney, W. L., & Carlo Landivar, J.
(2012).
Registration of Maize Germplasm Lines Tx736, Tx739, and Tx740 for Reducing Preharvest Aflatoxin Accumulation. Journal of Plant Registrations.
6(1), 88-94.
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Prom, L. K., Isakeit, T., Perumal, R., Erpelding, J. E., Rooney, W., & Magill, C. W.
(2011).
Evaluation of the Ugandan sorghum accessions for grain mold and anthracnose resistance. Crop Protection.
30(5), 566-571.
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Mayfield, K. L., Murray, S. C., Rooney, W. L., Isakeit, T., & Odvody, G. A.
(2011).
Confirmation of QTL Reducing Aflatoxin in Maize Testcrosses. Crop Science.
51(6), 2489-2498.
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Hernandez-Zepeda, C., Isakeit, T., Scott, A., & Brown, J. K.
(2010).
First Report of Okra yellow mosaic Mexico virus in Okra in the United States. Plant Disease.
94(7), 924-924.
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Isakeit, T., Woodward, J. E., Niu, C., & Wright, R. J.
(2010).
First Report of Sclerotinia Stem Rot of Canola Caused by Sclerotinia sclerotiorum in Texas. Plant Disease.
94(6), 792-792.
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Gao, X., Brodhagen, M., Isakeit, T., Brown, S. H., Gbel, C., Betran, J., ... Kolomiets, M. V.
(2009).
Inactivation of the lipoxygenase ZmLOX3 increases susceptibility of maize to Aspergillus spp. Molecular Plant-Microbe Interactions.
22(2), 222-231.
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Isakeit, T., & Jo, Y.
(2008).
Occurrence of Telia of Phakopsora pachyrhizi on Kudzu in Texas. Plant Disease.
92(9), 1369-1369.
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Isakeit, T., Prom, L. K., Wheeler, M., S. Puckhab, L., & Liu, J.
(2008).
Mycotoxigenic Potential of Ten Fusarium species Grown on Sorghum and in vitro. Plant Pathology Journal.
7(2), 183-186.
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Isakeit, T., Gao, X., & Kolomiets, M.
(2007).
Increased Resistance of a Maize Mutant Lacking the 9Lipoxygenase Gene, ZmLOX3, to Root Rot Caused by Exserohilum pedicellatum. Journal of Phytopathology.
155(11‐12), 758-760.
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., N., ., T. I., ., G., ., L., & ., W.
(2007).
Effect of Storage Temperature and Sphacelium Age on Claviceps africana Conidia Survival. Plant Pathology Journal.
6(4), 312-317.
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Robertson-Hoyt, L. A., Betrn, J., Payne, G. A., White, D. G., Isakeit, T., Maragos, C. M., Molnr, T. L., & Holland, J. B.
(2007).
Relationships among resistances to fusarium and Aspergillus ear rots and contamination by fumonisin and aflatoxin in maize. Phytopathology.
97(3), 311-317.
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Betrn, F. J., Bhatnagar, S., Isakeit, T., Odvody, G., & Mayfield, K.
(2006).
Aflatoxin Accumulation and Associated Traits in QPM Maize Inbreds and their Testcrosses. Euphytica.
152(2), 247-257.
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Perumal, R., Isakeit, T., Menz, M., Katile, S., No, E., & Magill, C. W.
(2006).
Characterization and genetic distance analysis of isolates of Peronosclerospora sorghi using AFLP fingerprinting. Fungal Biology.
110(Pt 4), 471-478.
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Fichtner, S. M., Isakeit, T., Wheeler, T. A., Kaufman, H. W., & Gannaway, J. R.
(2005).
Evaluation of Several Approaches to Manage Meloidogyne incognita and Cotton Seedling Disease Complexes in the High Plains of Texas. Journal of Nematology.
37(1), 66-70.
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Prom, L. K., Erpelding, J. E., Isakeit, T., & Montes, N.
(2005).
Inoculation Techniques for Identifying Resistance in Sorghum Genotypes to Sorghum Ergot. Journal of New Seeds: innovations in production, biotechnology, quality and marketing.
7(1), 9-22.
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Prom, L. K., Isakeit, T., Odvody, G. N., Rush, C. M., Kaufman, H. W., & Montes, N.
(2005).
Survival of Claviceps africana Within Sorghum Panicles at Several Texas Locations. Plant Disease.
89(1), 39-43.
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Betrn, F. J., & Isakeit, T.
(2004).
Aflatoxin accumulation in maize hybrids of different maturities. Agronomy Journal.
96(2), 565-570.
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Prom, L. K., & Isakeit, T.
(2003).
Laboratory, Greenhouse, and Field Assessment of Fourteen Fungicides for Activity Against Claviceps africana, Causal Agent of Sorghum Ergot. Plant Disease.
87(3), 252-258.
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Betrn, F. J., Isakeit, T., & Odvody, G.
(2002).
Aflatoxin accumulation of white and yellow maize inbreds in diallel crosses. Crop Science.
42(6), 1894-1901.
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Zhang, J. X., Bruton, B. D., Miller, M. E., & Isakeit, T.
(1999).
Relationship of Developmental Stage of Cantaloupe Fruit to Black Rot Susceptibility and Enzyme Production by Didymella bryoniae. Plant Disease.
83(11), 1025-1032.
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Isakeit, T., Black, M. C., & Jones, J. B.
(1998).
Natural Infection of Citronmelon with Acidovorax avenae subsp. citrulli. Plant Disease.
82(3), 351-351.
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Isakeit, T., Black, M. C., Barnes, L. W., & Jones, J. B.
(1997).
First Report of Infection of Honeydew with Acidovorax avenae subsp. citrulli. Plant Disease.
81(6), 694-694.
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Colbert, S. F., Isakeit, T., Ferri, M., Weinhold, A. R., Hendson, M., & Schroth, M. N.
(1993).
Use of an exotic carbon source to selectively increase metabolic activity and growth of Pseudomonas putida in soil. Applied and Environmental Microbiology.
59(7), 2056-2063.
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Hendricks, K., Hernandez, R. N., Roberts, P. D., Isakeit, T., & Alabi, O. J.
(2022).
First Report of watermelon crinkle leaf-associated virus 1 (WCLaV-1) and WCLaV-2 in Watermelon (Citrullus lanatus) Plants Coinfected with Cucurbit chlorotic yellows virus in Florida. Plant Disease.
106(1), PDIS06211141PDN-339.
-
chapter
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Betrn, F. J., Mayfield, K., Isakeit, T., & Menz, M.
(2006).
Breeding Maize Exotic Germplasm. Plant Breeding: The Arnel R. Hallauer International Symposium.
(pp. 352-367).
Wiley.
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Betrn, F. J., Mayfield, K., Isakeit, T., & Menz, M.
(2006).
Breeding Maize Exotic Germplasm. Plant Breeding: The Arnel R. Hallauer International Symposium.
(pp. 352-367).
Wiley.
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conference paper
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Luo, J., Arriaga, J. M., Li, H., Hemphill, J. K., Raisor, M., Keller, N., Isakeit, T., & Gould, J. H.
(2000).
Transformation of TAES cotton for seedling disease resistance. 639-640.
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Luo, J., Arriaga, J. M., Li, H., Hemphill, J. K., Raisor, M., Keller, N., Isakeit, T., & Gould, J. H.
(2000).
Transformation of TAES cotton for seedling disease resistance. 639-640.
Research
principal investigator on
Works By Students
chaired theses and dissertations
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Hassett, Brandon (2012-10). Movement and Longevity of Aspergillus flavus Propagules and Factors that Contribute to and Influence their Colonization and Production.
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Laughlin, David Andres (2016-04). Environmental and Developmental Aspects of Sorghum Downy Mildew with Particular Emphasis on Oospores.
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Noe, Montes Garcia (2005-02). Epidemiological aspects of Claviceps africana, causal agent of Sorghum ergot.
Background
education and training
- Ph.D. in Plant Pathology, Michigan State University - (East Lansing, Michigan, United States) 1988
Contact
first name
- Thomas
has last name
- Isakeit
Other
In the News
- t-isakeit@tamu.edu