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ARS Home » Northeast Area » Beltsville, Maryland (BARC) » Beltsville Agricultural Research Center » Mycology and Nematology Genetic Diversity and Biology Laboratory » Research » Publications at this Location » Publication #377958
Research Project: Improved Identification and Diagnostics of Plant Nematodes for Sustainable Grass and Forage Production Systems

Location: Mycology and Nematology Genetic Diversity and Biology Laboratory

Title: First report of Cactodera milleri Graney & Bird, 1990 from Colorado and Minnesota

Author
item Skantar, Andrea
item Handoo, Zafar
item KANTOR, MIHAIL - Orise Fellow
item Hult, Maria
item HAFEZ, SAAD - University Of Idaho
item KOMROY, KATHRYN - Minnesota Department Of Agriculture
item SIGURDSON, KIMBERLEY - Minnesota Department Of Agriculture
item GRABOWSKI, MICHELLE - Minnesota Department Of Agriculture

Submitted to: Journal of Nematology
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 12/23/2020
Publication Date: 2/24/2021
Citation: Skantar, A.M., Handoo, Z.A., Kantor, M.R., Hult, M.N., Hafez, S.A., Komroy, K., Sigurdson, K., Grabowski, M. 2021. First report of Cactodera milleri Graney & Bird, 1990 from Colorado and Minnesota. Journal of Nematology. 53:1-7. https://doi.org/10.21307/jofnem-2021-017.
DOI: https://doi.org/10.21307/jofnem-2021-017

Interpretive Summary: Cyst nematodes are an important group of plant parasites that damage the roots of many kinds of plants throughout the world. In this study, a team of ARS scientists and colleagues from Idaho and Minnesota analyzed anatomical and molecular traits to identify a cyst nematode called Cactodera milleri, isolated from quinoa in Colorado. The same species was found in soil samples from potato fields in Minnesota. This discovery is significant because it represents the first report of this nematode from these states. The molecular information from this species further expands the DNA database that will facilitate future identifications of cyst nematodes. This report will serve as a useful guide to researchers and diagnosticians identifying important cyst nematodes from the genus Cactodera.

Technical Abstract: In 2019, Cactodera milleri cysts were discovered from soil samples collected from a Chenopodium quinoa field, located in Mosca, Alamosa, county, Colorado, USA. A moderate number of lemon shaped cysts and juveniles were recovered from the affected quinoa plants. The same species was also identified from several counties in Minnesota from samples submitted over the years by the Minnesota Department of Agriculture as part of the Animal and Plant Health Inspection Service (APHIS) efforts to survey states for the presence of Pale Potato Cyst Nematode. The cysts and juveniles (J2) were recovered from soil samples through sieving and Baermann funnel extraction. The nematode species was identified by both morphological and molecular means as Cactodera milleri (Graney and Bird, 1990). To our knowledge this represents the first report of Cactodera milleri from Colorado and Minnesota.