HR job title
- Extension Program Specialist Iii
- Contact Info
Appel, David Professor and Extension Specialist
Positions
- Collaborating Faculty, Ecology and Conservation Biology, College of Agriculture and Life Sciences
- Professor and Extension Specialist, Plant Pathology and Microbiology, College of Agriculture and Life Sciences
- Overview
- Publications
- Research
- Teaching
- Works By Students
- Background
- Contact
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Overview
Publications
selected publications
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academic article
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Ouro-Djobo, A., Stevens, K., Scheiner, J. J., Tsolova, V. M., Pontasch, F. M., McBride, S. A., ... Alabi, O. J.
(2022).
Molecular characterization of divergent isolates of grapevine red blotch virus from Blanc du Soleil, an interspecific hybrid white grapevine cultivar
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Alabi, O. J., Appel, D. N., McBride, S., Al Rwahnih, M., & Pontasch, F. M.
(2020).
Complete genome sequence analysis of a genetic variant of grapevine virus L from the grapevine cultivar Blanc du Bois. Archives of Virology.
165(8), 1905-1909.
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Alabi, O. J., McBride, S., Appel, D. N., Al Rwahnih, M., & Pontasch, F. M.
(2019).
Grapevine virus M, a novel vitivirus discovered in the American hybrid bunch grape cultivar Blanc du Bois in Texas. Archives of Virology.
164(6), 1739-1741.
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McBride, S., Appel, D. N., Pontasch, F. M., Gregg, L., & Alabi, O. J.
(2017).
First Report of Tobacco ringspot virus Infecting an American Hybrid Grape Cultivar in Texas. Plant Disease: an international journal of applied plant pathology.
101(6), 1062-1062.
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Montague, T., Hellman, E. W., Appel, D., & Krawitzky, M.
(2016).
Asexual Propagation of Grapevine Transmits Pierce's Disease Pathogen (Xylella fastidiosa) to Rooted Cuttings. International Journal of Fruit Science.
16(2), 135-149.
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Stewart, L. R., Morrison, M. L., Hutchinson, M. R., Appel, D. N., & Wilkins, R. N.
(2014).
Effects of a Forest Pathogen on Habitat Selection and Quality for the Endangered Golden-Cheeked Warbler. WILDLIFE SOCIETY BULLETIN.
38(2), 279-287.
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Stewart, L. R., Morrison, M. L., Appel, D. N., & Wilkins, R. N.
(2014).
Spatial and Temporal Distribution of Oak Wilt in Golden-Cheeked Warbler Habitat. WILDLIFE SOCIETY BULLETIN.
38(2), 288-296.
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Juzwik, J., Appel, D. N., MacDonald, W. L., & Burks, S.
(2011).
Challenges and Successes in Managing Oak Wilt in the United States. Plant Disease: an international journal of applied plant pathology.
95(8), 888-900.
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Ancona, V., Appel, D. N., & de Figueiredo, P.
(2010).
Xylella fastidiosa: a model for analyzing agricultural biosecurity. Biosecurity and Bioterrorism: biodefense strategy, practice and science.
8(2), 171-182.
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Martinez-Trinidad, T., Watson, W. T., Arnold, M. A., Lombardini, L., & Appel, D. N.
(2010).
Comparing various techniques to measure tree vitality of live oaks. Urban Forestry and Urban Greening.
9(3), 199-203.
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Summer, E. J., Enderle, C. J., Ahern, S. J., Gill, J. J., Torres, C. P., Appel, D. N., ... Gonzalez, C. F.
(2010).
Genomic and biological analysis of phage Xfas53 and related prophages of Xylella fastidiosa. Journal of Bacteriology.
192(1), 179-190.
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Martnez-Trinidad, T., Watson, W. T., Arnold, M., Lombardini, L., & Appel, D.
(2009).
Carbohydrate Injections as a Potential Option to Improve Growth and Vitality of Live Oaks. Arboriculture and Urban Forestry.
35(3), 142-147.
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Greene, T. A., Reemts, C. M., & Appel, D. N.
(2008).
Efficacy of Basal Girdling to Control Oak Wilt Fungal Mat Production in Texas Red Oak (Quercus buckleyi) in Central Texas. Southern Journal of Applied Forestry.
32(4), 168-172.
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Camilli, K., Appel, D. N., & Watson, W. T.
(2007).
Studies on pruning cuts and wound dressings for oak wilt control. Arboriculture and Urban Forestry.
33(2), 132-139.
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Watson, W. T., Appel, D. N., Arnold, M. A., & Kenerley, C. M.
(2006).
Spatial distribution of Malus root systems in irrigated, trellised orchards. 81(4), 745-753.
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Watson, W. T., Kenerley, C. M., & Appel, D. N.
(2000).
Visual and Infrared Assessment of Root Colonization of Apple Trees by Phymatotrichopsis omnivora. Plant Disease: an international journal of applied plant pathology.
84(5), 539-543.
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Watson, W. T., Appel, D. N., Kenerley, C. M., & Arnold, M. A.
(2000).
Measurement of Apple Root Losses Associated with Cold Storage and Elutriation of Soil Core Samples. Horttechnology.
10(3), 580-584.
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Everitt, J. H., Escobar, D. E., Appel, D. N., Riggs, W. G., & Davis, M. R.
(1999).
Using Airborne Digital Imagery for Detecting Oak Wilt Disease. Plant Disease: an international journal of applied plant pathology.
83(6), 502-505.
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McDonald, B. A., Bellamy, B. K., Zhan, J. S., & Appel, D. N.
(1998).
The effect of an oak wilt epidemic on the genetic structure of a Texas live oak population. Botany.
76(11), 1900-1907.
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McDonald, B. A., Bellamy, B. K., Zhan, J., & Appel, D. N.
(1998).
The effect of an oak wilt epidemic on the genetic structure of a Texas live oak population. Botany.
76(11), 1900-1907.
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Appel, D. N.
(1995).
The oak wilt enigma: perspectives from the Texas epidemic. Annual Review of Phytopathology.
33(1), 103-118.
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Kurdyla, T. M., Guthrie, P. A., McDonald, B. A., & Appel, D. N.
(1995).
RFLPs in mitochondrial and nuclear DNA indicate low levels of genetic diversity in the oak wilt pathogen Ceratocystis fagacearum. Current Genetics: lower eukaryotes and organelles.
27(4), 373-378.
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BROOKS, D. S., GONZALEZ, C. F., APPEL, D. N., & FILER, T. H.
(1994).
EVALUATION OF ENDOPHYTIC BACTERIA AS POTENTIAL BIOLOGICAL-CONTROL AGENTS FOR OAK WILT. Biological Control.
4(4), 373-381.
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GREENE, T. A., & APPEL, D. N.
(1994).
RESPONSE OF LIVE OAK SELECTIONS TO INOCULATION WITH CERATOCYSTIS-FAGACEARUM. Canadian Journal of Forest Research.
24(3), 603-608.
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Appel, D. N.
(1994).
Identification and control of oak wilt in Texas urban forests. Arboriculture and Urban Forestry.
20(5), 250-258.
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Appel, D. N.
(1994).
The potential for a California oak wilt epidemic. Arboriculture and Urban Forestry.
20(2), 79-86.
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APPEL, D. N., & KURDYLA, T.
(1992).
INTRAVASCULAR INJECTION WITH PROPICONAZOLE IN LIVE OAK FOR OAK WILT CONTROL. Plant Disease: an international journal of applied plant pathology.
76(11), 1120-1124.
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APPEL, D. N., KURDYLA, T., & LEWIS, R.
(1990).
NITIDULIDS AS VECTORS OF THE OAK WILT FUNGUS AND OTHER CERATOCYSTIS SPP IN TEXAS. Forest Pathology.
20(6-7), 412-417.
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APPEL, D. N., MAGGIO, R. C., NELSON, E. L., & JEGER, M. J.
(1989).
MEASUREMENT OF EXPANDING OAK WILT CENTERS IN LIVE OAK. Phytopathology: International Journal of the American Phytopathological Society.
79(11), 1318-1322.
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APPEL, D. N., ANDERSEN, K., & LEWIS, R.
(1986).
OCCURRENCE OF NITIDULID BEETLES (COLEOPTERA, NITIDULIDAE) IN TEXAS OAK WILT CENTERS. Journal of Economic Entomology.
79(5), 1276-1279.
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APPEL, D. N., DREES, C. F., & JOHNSON, J.
(1985).
AN EXTENDED RANGE FOR OAK WILT AN CERATOCYSTIS-FAGACEARUM COMPATIBILITY TYPES IN THE UNITED-STATES. Botany.
63(7), 1325-1328.
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APPEL, D. N., & MAGGIO, R. C.
(1984).
AERIAL SURVEY FOR OAK WILT INCIDENCE AT 3 LOCATIONS IN CENTRAL TEXAS. Plant Disease: an international journal of applied plant pathology.
68(8), 661-664.
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Ouro-Djobo, A., Stevens, K., Scheiner, J. J., Tsolova, V. M., Pontasch, F. M., McBride, S. A., ... Alabi, O. J.
(2022).
Molecular characterization of divergent isolates of grapevine red blotch virus from Blanc du Soleil, an interspecific hybrid white grapevine cultivar
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book
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Juzwik, J., Harrington, T. C., MacDonald, W. L., & Appel, D. N.
(2008).
The origin of Ceratocystis fagacearum, the oak wilt fungus. Ed. 46.
Annual Reviews.
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Juzwik, J., Harrington, T. C., MacDonald, W. L., & Appel, D. N.
(2008).
The origin of Ceratocystis fagacearum, the oak wilt fungus. Ed. 46.
Annual Reviews.
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conference paper
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Alabi, O. J., McBride, S. A., Appel, D. N., & Al Rwahnih, M.
(2020).
A naturally occurring genetic variant of grapevine virus L from Texas Blanc du Bois grapevines. Phytopathology: International Journal of the American Phytopathological Society.
182-182.
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Appel, D. N., McBride, S. A., Davis, R., & Alabi, O. J.
(2020).
The occurrence of mixed virus infections in a Texas Blanc du Bois vineyard. Phytopathology: International Journal of the American Phytopathological Society.
69-69.
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Alabi, O., McBride, S. A., Appel, D. N., Al Rwahnih, M., & Pontasch, F.
(2019).
Discovery of a new Vitivirus in an American hybrid bunch grape cultivar Blanc du Bois in Texas. Phytopathology: International Journal of the American Phytopathological Society.
117-117.
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Appel, D. N., Alabi, O., McBride, S. A., Al Rwahnih, M., & Pontasch, F.
(2019).
The Incidence of Grapevine Viruses in Four Texas Blanc du Bois Vineyards. Phytopathology: International Journal of the American Phytopathological Society.
173-173.
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Appel, D. N., & McBride, S.
(2018).
A case study of misapplication of the fungicide flutriafol to grapevines in Texas. Phytopathology: International Journal of the American Phytopathological Society.
158-158.
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Mcbride, S., & Appel, D. N.
(2017).
Potential persistence of flutriafol in vineyard soils treated for control of cotton root rot, caused by Phymatotrichopsis omnivora. Phytopathology: International Journal of the American Phytopathological Society.
43-43.
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McBride, S., Appel, D. N., Pontasch, F., Gregg, L., & Alabi, O.
(2017).
First report of Tobacco ringspot virus associated with decline symptoms of an American hybrid grape cultivar in Texas. Phytopathology: International Journal of the American Phytopathological Society.
1-1.
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Appel, D. N., McBride, S., Pontasch, F., Gregg, L., & Alabi, O.
(2017).
Survey for Grapevine Leafroll Associated Virus 3 in Texas Vineyards. Phytopathology: International Journal of the American Phytopathological Society.
1-2.
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Mcbride, S. A., & Appel, D. N.
(2015).
The control of cotton root rot in Texas winegrapes with the fungicide flutriafol. Phytopathology: International Journal of the American Phytopathological Society.
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Appel, D. N., & Ong, K. L.
(2015).
The results of survey for citrus greening on the Upper Gulf Coast of Texas. Phytopathology: International Journal of the American Phytopathological Society.
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Mcbride, S. A., Richards, C. J., Appel, D. N., & Pase, H. A.
(2012).
Identification of a potential pyrophilous fungus following a forest fire in Bastrop County, TX. Phytopathology: International Journal of the American Phytopathological Society.
78-78.
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Ancona, V., Appel, D. N., & de Figueiredo, P.
(2010).
Regulatory role of c-di-GMP biosynthesis genes of Xylella fastidiosa's virulence factors. Phytopathology: International Journal of the American Phytopathological Society.
S7-S7.
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Appel, D. N., & Torres, C. P.
(2008).
Comparative epidemiology of Pierce's disease in grape varieties in Texas. Phytopathology: International Journal of the American Phytopathological Society.
S210-S210.
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Torres, C. P., & Appel, D. N.
(2008).
Isolation of Xylella fastidiosa from seven grape varieties in a Texas vineyard. Phytopathology: International Journal of the American Phytopathological Society.
S212-S213.
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Torres, C. P., Appel, D. N., & Morano, L.
(2008).
Differentiation of Xylella fastidiosa subspecies piercei isolates from a Texas vineyard into strain groups utilizing simple sequence repeat markers. Phytopathology: International Journal of the American Phytopathological Society.
S157-S157.
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Gray, M. C., & Appel, D. N.
(2007).
Differences in tolerance to the oak wilt fungus, Ceratocystis fagacearum, among live oak (Quercus fusiformis) half-sib groups and clones. Phytopathology: International Journal of the American Phytopathological Society.
S42-S42.
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Appel, D. N., & Camilli, K.
(2006).
Impact of oak wilt on urban forest in Texas. Phytopathology: International Journal of the American Phytopathological Society.
S157-S157.
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Appel, D. N., & Camilli, K.
(2005).
Spread of Ceratocystis fagacearum across the landscape: What do spatial patterns tell us?. Phytopathology: International Journal of the American Phytopathological Society.
S127-S127.
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Appel, D. N., Service, S., & Kurdyla, T.
(2004).
Nursery survey for sudden oak death in Texas. Phytopathology: International Journal of the American Phytopathological Society.
S5-S5.
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Watson, W. T., Appel, D. N., Arnold, M. A., Kenerley, C. M., & Starr, J. L.
(2004).
Seasonal Influence on Infection Rates of Malus sylvestris var. domestica Roots by Phymatotrichopsis omnivora. HORTSCIENCE.
747-747.
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Watson, W. T., Appel, D. N., Arnold, M. A., Kenerley, C. M., & Starrs, J. L.
(2004).
Utilizing Aboveground Rhizotrons to Study Root Growth and Pathogen Movement in Simulated Orchard Conditions. HORTSCIENCE.
798-798.
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Appel, D. N.
(2001).
The basics of oak wilt biology and factors influencing disease incidence and severity. 71-81.
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Appel, D. N.
(2001).
The use of Alamo for oak wilt management. 101-106.
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BROOKS, D. S., GONZALEZ, C. F., APPEL, D. N., & FILER, T. H.
(1988).
ISOLATION AND EVALUATION OF ENDOPHYTIC BACTERIA FROM LIVE OAKS FOR INVITRO INHIBITION TO CERATOCYSTIS-FAGACEARUM AND COLONIZATION OF OAK TREES. Phytopathology: International Journal of the American Phytopathological Society.
626-626.
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ROBERTS, P. E., & APPEL, D. N.
(1988).
UPTAKE AND DISTRIBUTION OF THIABENDAZOLE INJECTED INTO LIVE OAKS. Phytopathology: International Journal of the American Phytopathological Society.
629-629.
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KURDYLA, T. M., APPEL, D. N., & LEWIS, R. L.
(1986).
THE SEASONAL OCCURRENCE OF CERATOCYSTIS SPP ON NITIDULIDS TRAPPED IN CENTRAL TEXAS OAK WILT CENTERS. Phytopathology: International Journal of the American Phytopathological Society.
1114-1115.
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APPEL, D. N., ANDERSEN, K., DREES, C. F., & LEWIS, R. L.
(1985).
NITIDULIDS AS POSSIBLE VECTORS OF CERATOCYSTIS-FAGACEARUM IN TEXAS. Phytopathology: International Journal of the American Phytopathological Society.
498-498.
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PETERS, R. N., & APPEL, D. N.
(1985).
SEASONAL SUSCEPTIBILITY AND INFECTION COURTS OF TEXAS LIVE OAKS INOCULATED WITH CERATOCYSTIS-FAGACEARUM. Phytopathology: International Journal of the American Phytopathological Society.
502-503.
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APPEL, D. N., FOX, T., & DREES, C. F.
(1983).
THE OCCURRENCE OF OAK WILT IN TEXAS. Phytopathology: International Journal of the American Phytopathological Society.
833-833.
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Alabi, O. J., McBride, S. A., Appel, D. N., & Al Rwahnih, M.
(2020).
A naturally occurring genetic variant of grapevine virus L from Texas Blanc du Bois grapevines. Phytopathology: International Journal of the American Phytopathological Society.
182-182.
Research
principal investigator on
Teaching
teaching activities
- BESC481 Seminar Instructor
- BESC484 Field Experience Instructor
- BESC484 Field Experience Instructor
- BESC485 Directed Studies Instructor
- BESC491 Hnr-research Instructor
- ESSM307 Forest Protection Instructor
- PLPA301 Plant Pathology Instructor
- PLPA303 Plant Pathology Lab Instructor
- PLPA601 Fundamentals Plant Path Instructor
- PLPA603 Plant Disease Management Instructor
- PLPA626 Diag Of Plant Disease Instructor
- PLPA691 Research Instructor
Works By Students
chaired theses and dissertations
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Brown, Albre Abi (2016-08). Trunk Disease of Grapevines in Texas.
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Bryan, Kelly Asbill (2009-05). The development of new tools for field and laboratory diagnosis of Pierces Disease.
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Gray, Myron Crowley (2009-05). An investigation into the role of genetics in the tolerance of Texas live oaks to Ceratocystis fagacearum.
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McBride, Sheila Ann (2016-04). Strategies for Managing Cotton Root Rot (CRR) Disease in Texas Wine Grapes.
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Torres, Cruz 1981- (2012-11). Differentiation and Analysis of Xylella fastidiosa Subspecies fastidiosa Cultures Isolated from a Single Texas Vineyard using Simple Sequence Repeat Markers.
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Vest, Mandi Ann (2005-02). Investigations on the diagnosis, colonization, and epidemiology of grapevines with Pierce's disease.
Background
education and training
- Ph.D. in Plant Pathology, Virginia Tech - (Blacksburg, Virginia, United States) 1981
Contact
first name
- David
has last name
- Appel
Other
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- appel@tamu.edu