Incidence and Distribution of Puccinia coronata and P. graminis on Turfgrass in the Midwestern United States
| Autor: | Vonte Jackson, Paul L. Koch, Brijesh B. Karakkat |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
0106 biological sciences
0301 basic medicine Time Factors Perennial plant Plant Science Poaceae Real-Time Polymerase Chain Reaction Stem rust Sensitivity and Specificity 01 natural sciences Rust Midwestern United States 03 medical and health sciences Puccinia coronata Phylogeny Plant Diseases Molecular identification Puccinia biology Host (biology) Basidiomycota Incidence (epidemiology) biology.organism_classification 030104 developmental biology Agronomy Genome Fungal Agronomy and Crop Science 010606 plant biology & botany |
| Zdroj: | Plant Disease. 102:955-963 |
| ISSN: | 1943-7692 0191-2917 |
| DOI: | 10.1094/pdis-09-17-1353-re |
| Popis: | Crown rust (caused by Puccinia coronata) and stem rust (caused by P. graminis) are two common and destructive diseases of turfgrass in the United States. Crown rust has been associated with perennial ryegrass and stem rust with Kentucky bluegrass when identified based solely on fungal morphology. However, recent studies using molecular identification methods have indicated the host–pathogen relationship of rusts on turf to be more complex. Our primary objective was to quickly and accurately identify P. coronata and P. graminis in symptomatic turfgrass leaves over 3 years on turfgrass samples from across the Midwestern United States. Between 2013 and 2015, 413 samples of symptomatic cool-season turfgrass from Wisconsin and surrounding states were screened using real-time polymerase chain reaction. Of these samples, 396 were Kentucky bluegrass and 17% of them contained P. coronata, 69% contained P. graminis, and 13% contained both P. coronata and P. graminis. In addition, both year and location effects were observed on the distribution of Puccinia spp. collected annually from two locations in southern Wisconsin. This research supports previous conclusions that have identified variability among P. graminis and P. coronata host relationships on turfgrass, and further demonstrates that rust fungal populations on Kentucky bluegrass may not be consistent between locations in the same year or over multiple years at the same location. The increasing evidence of variation in the turfgrass rust populations will likely affect future rust management and turfgrass breeding efforts. |
| Databáze: | OpenAIRE |
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