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| DOI: | 10.1094/PDIS-09-14-0978-RE |
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| Web URL(s): | http://apsjournals.apsnet.org/doi/pdf/10.1094/PDIS-09-14-0978-RE
Last checked: 11/11/2015
Requires: PDF Reader
Access conditions: Item is within a limited-access website
http://apsjournals.apsnet.org/doi/full/10.1094/PDIS-09-14-0978-RE
Last checked: 11/11/2015
Access conditions: Item is within a limited-access website |
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| Publication Type:
| Refereed |
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| Author(s): | Alderman, Stephen C.;
Walenta, Darrin L.;
Hamm, Philip B.;
Martin, Ruth C.;
Dung, Jeremiah;
Kosman, Evsey |
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| Author Affiliation: | Alderman and Martin: United States Department of Agriculture-Agricultural Research Service (USDA-ARS) National Forage Seed Production Center, Corvallis; Hamm: Department of Botany and Plant Pathology, Oregon State University Mermiston Agricultural Research and Extension Center, Hermiston, OR; Walenta: Oregon State University Union County Extension Service, La Grande; Dung: Department of Botany and Plant Pathology, Central Oregon Agricultural Research Center, Oregon State University, Madras; Kosman: Institute for Cereal Crops Improvement, Tel Aviv University, Ramat Aviv, Tel Aviv, Israel |
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| Title: | Afternoon ascospore release in Claviceps purpurea optimizes perennial ryegrass infection |
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| Section: | Research
Other records with the "Research" Section
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| Source: | Plant Disease. Vol. 99, No. 10, October 2015, p. 1410-1415. |
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| Publishing Information: | [Washington, D.C.]: Bureau of Plant Industry, U.S. Dept. of Agriculture |
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| # of Pages: | 6 |
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| Related Web URL: | http://apsjournals.apsnet.org/doi/abs/10.1094/PDIS-09-14-0978-RE
Last checked: 11/11/2015
Notes: Abstract only |
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| Keywords: | TIC Keywords: Claviceps purpurea; Ergot; Flowering; Fungus infection; Growth studies; Lolium perenne; Poa pratensis; Release rate; Sclerotium; Time-of-day
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| Geographic Terms: | Northeastern Oregon |
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| Abstract/Contents: | "In Kentucky bluegrass (Poa pratensis), Claviceps purpurea, the causal agent of ergot, typically releases ascospores during the early-morning hours, between about midnight and 10:00 A.M., corresponding to time of flowering, when the unfertilized ovaries are most susceptible to infection. During aeromycology studies of C. purpurea in perennial ryegrass (Lolium perenne) in northeastern Oregon during 2008 to 2010 and 2013, a strain of C. purpurea was found that released ascospores in the afternoon, coinciding with flowering in perennial ryegrass. Under controlled environmental conditions, sclerotia from perennial ryegrass and Kentucky bluegrass released spores in the afternoon and morning, respectively, consistent with timing of spore release under field conditions. Internal transcribed spacer (ITS) sequences of single sclerotial isolates from Kentucky bluegrass and perennial ryegrass were consistent with C. purpurea, although minor variations in ITS sequences among isolates were noted. Differences between Kentucky bluegrass and perennial ryegrass isolates were observed in random amplified polymorphic DNA. Evidence is provided for adaptation of C. purpurea to perennial ryegrass by means of delayed spore release that coincides with afternoon flowering in perennial ryegrass." |
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| Language: | English |
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| References: | 25 |
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| Note: | Pictures, b/w
Figures
Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Alderman, S. C., D. L. Walenta, P. B. Hamm, R. C. Martin, J. Dung, and E. Kosman. 2015. Afternoon ascospore release in Claviceps purpurea optimizes perennial ryegrass infection. Plant Disease. 99(10):p. 1410-1415. |
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| DOI: 10.1094/PDIS-09-14-0978-RE |
| Web URL(s):
http://apsjournals.apsnet.org/doi/pdf/10.1094/PDIS-09-14-0978-RE
Last checked: 11/11/2015
Requires: PDF Reader
Access conditions: Item is within a limited-access website
http://apsjournals.apsnet.org/doi/full/10.1094/PDIS-09-14-0978-RE
Last checked: 11/11/2015
Access conditions: Item is within a limited-access website |
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MSU catalog number: b2191617 |
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