Comparison of Baiting Techniques for Recovering Phytophthora sojae from Soybean Fields in Iowa
| Autor: | Alison E. Robertson, Rashelle L. Matthiesen, Clarice Schmidt |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
0106 biological sciences
0301 basic medicine biology business.industry fungi food and beverages Plant Science Horticulture biology.organism_classification 01 natural sciences Biotechnology 03 medical and health sciences Pathosystem 030104 developmental biology Disease management (agriculture) Phytophthora sojae Phytophthora business Pathogen 010606 plant biology & botany |
| Zdroj: | Plant Health Progress. 22:316-322 |
| ISSN: | 1535-1025 |
| Popis: | Understanding the diversity of a pathogen is important for developing disease management recommendations. In the Phytophthora root and stem rot–soybean pathosystem, P. sojae is characterized into pathotypes based on the ability of the pathogen to cause disease on soybean genotypes that each contain a different resistance Rps gene. To understand the diversity of P. sojae in an area, isolates of the pathogen may be recovered by baiting soil samples. In this research, we compared two commonly used methods for baiting P. sojae: the leaf disc method and the seedling method. More isolates of P. sojae were recovered using the leaf disc baiting method (P < 0.01), and more pathotypes were detected within this population (P < 0.01). Mean complexity of the two populations and the simple, Gleason, and Shannon diversity indices also differed (P < 0.01). However, the percent of isolates that caused disease on each Rps gene did not differ between methods. Thus, either method could be used to characterize pathotypes of P. sojae present in an area to provide data to soybean breeders and agronomists for deployment of Rps genes in soybean cultivars. |
| Databáze: | OpenAIRE |
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