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David M. Geiser
Affiliate Researcher
Titles and Affiliations
Professor, Plant Pathology and Environmental Microbiology

Research Summary

Research focuses on the molecular evolutionary genetics of fungi, mostly in the realm of molecular phylogenetics and systematics at the species level.

In the News

Research Keywords

 These keywords and phrases come from the publications and other research output of this person. See other researchers related to these topics by clicking on any keyword.

Fusarium
Cladistics
DNA Sequence
DNA Sequencing
Fusarium Solani Species Complex
Fungi
Phylogeny
Fusarium Solani
Infectious Agent
Fusaria
Phylogenetic Diversity
Phylogenetic Analysis
Species Complex
Fusarium Oxysporum
Lineages
Plant Pathogen
Trichothecene
Pathogenicity
Taxon
Multilocus Phylogeny

Recent Publications

Assembling telomere-to-telomere genomes of Fusarium oxysporum f. sp. lactucae provides a roadmap for studying genome and phenotype evolution

Li, N., Steenwyk, J. L., O’Donnell, S., Gluck-Thaler, E., Kane, S. M., Geiser, D. M. & Martin, F. N., Dec 2026, In: BMC genomics. 27, 1, 406.

Research output: Contribution to journal › Article › peer-review

PAQman: reference-free ensemble evaluation of long-read genome assemblies

O’Donnell, S., Li, N., Steenwyk, J. L., Geiser, D. M., Martin, F. N. & Gluck-Thaler, E., Apr 2 2026, In: G3: Genes, Genomes, Genetics. 16, 4, p. 1-6 6 p., jkag034.

Research output: Contribution to journal › Article › peer-review

A Systematic Approach for Identifying Unique Genomic Sequences for Fusarium oxysporum f. sp. lactucae Race 1 and Development of Molecular Diagnostic Tools

Li, N., Geiser, D. M., Steenwyk, J. L., Tsuchida, C., Koike, S., Slinski, S. & Martin, F. N., Feb 2025, In: PHYTOPATHOLOGY. 115, 2, p. 204-217 14 p.

Research output: Contribution to journal › Article › peer-review

Phylogenomics reveals extensive misidentification of fungal strains from the genus Aspergillus

Steenwyk, J. L., Balamurugan, C., Raja, H. A., Gonçalves, C., Li, N., Martin, F., Berman, J., Oberlies, N. H., Gibbons, J. G., Goldman, G. H., Geiser, D. M., Houbraken, J., Hibbett, D. S. & Rokas, A., Apr 2024, In: Microbiology Spectrum. 12, 4

Research output: Contribution to journal › Article › peer-review

Diversity of Arthropods that Visit Xyris spp. (Xyridaceae): New Observations from Guyana

Torres-Cruz, T. J., Ré, L. A., Johnson, J. R., Geiser, D. M. & Skvarla, M. J., Jan 31 2024, In: Proceedings of the Entomological Society of Washington. 125, 2, p. 246-255 10 p.

Research output: Contribution to journal › Article › peer-review

First Report of Fusarium falciforme Causing Root and Stem Rot in Cowpea (syn. Black-Eyed Pea; Vigna unguiculata) in California

Zimmerman, K., Clark, N. E., Turini, T. A., Paulk, A., Múnera, J. D. C., Li, N., Geiser, D. M., Martin, F. N. & Swett, C. L., Dec 2024, In: Plant disease. 108, 12, p. 3651 1 p.

Research output: Contribution to journal › Comment/debate › peer-review

Phylogenetic Diversity and Mycotoxin Potential of Emergent Phytopathogens Within the Fusarium tricinctum Species Complex

Laraba, I., Busman, M., Geiser, D. M. & O'Donnell, K., Jun 2022, In: PHYTOPATHOLOGY. 112, 6, p. 1284-1298 15 p.

Research output: Contribution to journal › Article › peer-review

DNA Sequence-Based Identification of Fusarium: A Work in Progress

O’Donnell, K., Whitaker, B. K., Laraba, I., Proctor, R. H., Brown, D. W., Broders, K., Kim, H. S., McCormick, S. P., Busman, M., Aoki, T., Torres-Cruz, T. J. & Geiser, D. M., Jun 2022, In: Plant disease. 106, 6, p. 1597-1609 13 p.

Research output: Contribution to journal › Article › peer-review

Fusarium abutilonis and F. guadeloupense, two novel species in the Fusarium buharicum clade supported by multilocus molecular phylogenetic analyses

O’Donnell, K., Gräfenhan, T., Laraba, I., Busman, M., Proctor, R. H., Kim, H. S., Wiederhold, N. P., Geiser, D. M. & Seifert, K. A., 2022, In: Mycologia. 114, 4, p. 682-696 15 p.

Research output: Contribution to journal › Article › peer-review

FUSARIUM-ID v.3.0: An Updated, Downloadable Resource for Fusarium Species Identification

Torres-Cruz, T. J., Whitaker, B. K., Proctor, R. H., Broders, K., Laraba, I., Kim, H. S., Brown, D. W., O’Donnell, K., Estrada-Rodríguez, T. L., Lee, Y. H., Cheong, K., Wallace, E. C., McGee, C. T., Kang, S. & Geiser, D. M., Jun 2022, In: Plant disease. 106, 6, p. 1610-1616 7 p.

Research output: Contribution to journal › Article › peer-review

Three novel Ambrosia Fusarium Clade species producing multiseptate “dolphin-shaped” conidia, and an augmented description of Fusarium kuroshium

Aoki, T., Liyanage, P. N. H., Konkol, J. L., Ploetz, R. C., Smith, J. A., Kasson, M. T., Freeman, S., Geiser, D. M. & O’Donnell, K., 2021, In: Mycologia. 113, 5, p. 1089-1109 21 p.

Research output: Contribution to journal › Article › peer-review

Phylogenomic analysis of a 55.1-kb 19-gene dataset resolves a monophyletic fusarium that includes the fusarium solani species complex

Geiser, D. M., Al-Hatmi, A. M. S., Aoki, T., Arie, T., Balmas, V., Barnes, I., Bergstrom, G. C., Bhattacharyya, M. K., Blomquist, C. L., Bowden, R. L., Brankovics, B., Brown, D. W., Burgess, L. W., Bushley, K., Busman, M., Cano-Lira, J. F., Carrillo, J. D., Chang, H. X., Chen, C. Y. & Chen, W. & 148 others, Chilvers, M., Chulze, S., Coleman, J. J., Cuomo, C. A., Wilhelm de Beer, Z., Sybren de Hoog, G., Castillo-Munera, J. D., Del Ponte, E. M., Dieguez-Uribeondo, J., Pietro, A. D., Edel-Hermann, V., Elmer, W. H., Epstein, L., Eskalen, A., Esposto, M. C., Everts, K. L., Fernandez-Pavıa, S. P., da Silva, G. F., Foroud, N. A., Fourie, G., Frandsen, R. J. N., Freeman, S., Freitag, M., Frenkel, O., Fuller, K. K., Gagkaeva, T., Gardiner, D. M., Glenn, A. E., Gold, S. E., Gordon, T. R., Gregory, N. F., Gryzenhout, M., Guarro, J., Gugino, B. K., Gutierrez, S., Hammond-Kosack, K. E., Harris, L. J., Homa, M., Hong, C. F., Hornok, L., Huang, J. W., Ilkit, M., Jacobs, A., Jacobs, K., Jiang, C., del Mar Jimenez-Gasco, M., Kang, S., Kasson, M. T., Kazan, K., Kennell, J. C., Kim, H. S., Corby Kistler, H., Kuldau, G. A., Kulik, T., Kurzai, O., Laraba, I., Laurence, M. H., Lee, T., Lee, Y. W., Lee, Y. H., Leslie, J. F., Liew, E. C. Y., Lofton, L. W., Logrieco, A. F., Lopez-Berges, M. S., Luque, A. G., Lysøe, E., Ma, L. J., Marra, R. E., Martin, F. N., May, S. R., McCormick, S. P., McGee, C., Meis, J. F., Migheli, Q., Mohamed Nor, N. M. I., Monod, M., Moretti, A., Mostert, D., Mule, G., Munaut, F., Munkvold, G. P., Nicholson, P., Nucci, M., O’Donnell, K., Pasquali, M., Pfenning, L. H., Prigitano, A., Proctor, R. H., Ranque, S., Rehner, S. A., Rep, M., Rodrıguez-Alvarado, G., Rose, L. J., Roth, M. G., Ruiz-Roldan, C., Saleh, A. A., Salleh, B., Sang, H., Scandiani, M. M., Scauflaire, J., Schmale, D. G., Short, D. P. G., Sisic, A., Smith, J. A., Smyth, C. W., Son, H., Spahr, E., Stajich, J. E., Steenkamp, E., Steinberg, C., Subramaniam, R., Suga, H., Summerell, B. A., Susca, A., Swett, C. L., Toomajian, C., Torres-Cruz, T. J., Tortorano, A. M., Urban, M., Vaillancourt, L. J., Vallad, G. E., van der Lee, T. A. J., Vanderpool, D., van Diepeningen, A. D., Vaughan, M. M., Venter, E., Vermeulen, M., Verweij, P. E., Viljoen, A., Waalwijk, C., Wallace, E. C., Walther, G., Wang, J., Ward, T. J., Wickes, B. L., Wiederhold, N. P., Wingfield, M. J., Wood, A. K. M., Xu, J. R., Yang, X. B., Yli-Mattila, T., Yun, S. H., Zakaria, L., Zhang, H., Zhang, N., Zhang, S. X. & Zhang, X., Jul 2021, In: PHYTOPATHOLOGY. 111, 7, p. 1064-1079 16 p.

Research output: Contribution to journal › Article › peer-review

Erratum: Phylogenetic diversity, trichothecene potential, and pathogenicity within Fusarium sambucinum species complex (PLoS ONE (2021) 16:1 (e0245037) DOI: 10.1371/journal.pone.0245037)

Laraba, I., McCormick, S. P., Vaughan, M. M., Geiser, D. M. & O'Donnell, K., Apr 2021, In: PloS one. 16, 4 April, e0250812.

Research output: Contribution to journal › Comment/debate › peer-review

Phylogenetic diversity, trichothecene potential, and pathogenicity within Fusarium sambucinum species complex

Laraba, I., McCormick, S. P., Vaughan, M. M., Geiser, D. M. & O’Donnell, K., Jan 2021, In: PloS one. 16, 1 January, e0245037.

Research output: Contribution to journal › Article › peer-review

Author Correction: Fungal taxonomy and sequence-based nomenclature (Nature Microbiology, (2021), 6, 5, (540-548), 10.1038/s41564-021-00888-x)

Lücking, R., Aime, M. C., Robbertse, B., Miller, A. N., Aoki, T., Ariyawansa, H. A., Cardinali, G., Crous, P. W., Druzhinina, I. S., Geiser, D. M., Hawksworth, D. L., Hyde, K. D., Irinyi, L., Jeewon, R., Johnston, P. R., Kirk, P. M., Malosso, E., May, T. W., Meyer, W. & Nilsson, H. R. & 8 others, Öpik, M., Robert, V., Stadler, M., Thines, M., Vu, D., Yurkov, A. M., Zhang, N. & Schoch, C. L., Jul 2021, In: Nature Microbiology. 6, 7, p. 971 1 p.

Research output: Contribution to journal › Comment/debate › peer-review

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