| |
| DOI: | 10.1094/PHYTO-98-12-1297 |
|---|
| Web URL(s): | http://apsjournals.apsnet.org/doi/pdf/10.1094/PHYTO-98-12-1297
Last checked: 02/04/2009
Requires: PDF Reader |
|---|
| Publication Type:
| Refereed
Report |
|---|
| Author(s): | Jo, Young-Ki;
Chang, Seog Won;
Boehm, Michael;
Jung, Geunhwa |
|---|
| Author Affiliation: | Jo: Department of Plant Pathology and Microbiology, Texas A&M University, College Station, Texas; Chang: Bio Regional Innovation Center, Youngdong University, South Korea; Boehm: Department of Plant Pathology, The Ohio State University, Columbus, Ohio; Jung: Department of Plant, Soil and Insect Sciences, University of Massachusetts, Amherst, Massachusetts |
|---|
| Title: | Rapid development of fungicide resistance by Sclerotinia homoeocarpa on turfgrass |
|---|
| Section: | Disease control and pest management
Other records with the "Disease control and pest management" Section
|
|---|
| Source: | Phytopathology. Vol. 98, No. 12, December 2008, p. 1297-1304. |
|---|
| Publishing Information: | St. Paul, MN: American Phytopathological Society |
|---|
| # of Pages: | 8 |
|---|
| Keywords: | TIC Keywords: Fungicide resistance; Sclerotinia homoeocarpa; Genetic markers; Simple sequence repeats; Genetic diversity; Dollar spot; Population dynamics; Thiophanate-methyl; Propiconazole; Fungicide trials
|
|---|
| Abstract/Contents: | "Dollar spot, caused by Sclerotinia homoeocarpa, is the most prevalent and economically important turfgrass disease in North America. Increasing levels of fungicide resistance, coupled with tightening environmental scrutiny of existing fungicides, has left fewer options for managing dollar spot. More knowledge about S. homoeocarpa populations is needed to improve dollar spot management strategies, especially with respect to minimizing the development of fungicide resistance. Population diversity of S. homoeocarpa was examined using inter-simple sequence repeat markers and vegetative compatibility assays. Two subgroups were found in S. homoeocarpa field populations on both fairway and putting green turfgrass at a research field in Wisconsin. These subgroups were genetically different, vegetatively incompatible, and had different fungicide sensitivities. The frequency of the two genetic subgroups differed significantly between the fairway and putting green, but was uniform within the fairway or within the green. Population dynamics of S. homoeocarpa in response to two systemic fungicides (thiophanate-methyl and propiconazole) were assessed based on in vitro fungicide sensitivity. Dynamics of S. homoeocarpa populations depended on the presence of fungicide-resistant isolates in the initial populations before fungicide applications and changed rapidly after fungicide applications. Shifting of the population toward propiconazole resistance was gradual, whereas thiophanate-methyl resistance developed rapidly in the population. In conclusion, field populations of S. homoeocarpa containing genetically distinct, vegetatively incompatible groups were different on turfgrass that was managed differently, and they were changed rapidly after exposure to fungicides." |
|---|
| Language: | English |
|---|
| References: | 27 |
|---|
| Note: | Figures
Tables
Graphs |
|---|
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Jo, Y.-K., S. W. Chang, M. Boehm, and G. Jung. 2008. Rapid development of fungicide resistance by Sclerotinia homoeocarpa on turfgrass. Phytopathology. 98(12):p. 1297-1304. |
| Fastlink to access this record outside TGIF: https://tic.msu.edu/tgif/flink?recno=144442 |
| If there are problems with this record, send us feedback about record 144442. |
| Choices for finding the above item: |
|---|
| DOI: 10.1094/PHYTO-98-12-1297 |
| Web URL(s):
http://apsjournals.apsnet.org/doi/pdf/10.1094/PHYTO-98-12-1297
Last checked: 02/04/2009
Requires: PDF Reader |
| 
MSU catalog number: b2219736a |
| Find from within TIC:
Digitally in TIC by record number. |
| Request through your local library's inter-library loan service (bring or send a copy of this TGIF record) |
