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| Web URL(s): | http://apsjournals.apsnet.org/doi/pdf/10.1094/PHYTO-105-11-S4.1#page=160
Last checked: 12/14/2015
Requires: PDF Reader
Notes: Item is within a single large file |
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| Publication Type:
| Report |
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| Author(s): | Zidek, M.;
Jo, Y. K. |
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| Author Affiliation: | Texas A&M University, College Station, TX |
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| Title: | Population diversity of Gaeumannomyces graminis var. graminis from St. Augustinegrass in Texas |
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| Section: | 2015 APS Annual Meeting abstracts of presentations
Other records with the "2015 APS Annual Meeting abstracts of presentations" Section
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| Meeting Info.: | Pasadena, California: August 1-5, 2015 |
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| Source: | Phytopathology. Vol. 105, No. 11S, November 2015, p. S4.160. |
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| Publishing Information: | Lancaster, Pennsylvania: The Society Intelligencer Printing Company for The American Phytopathological Society |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Diversity; Gaeumannomyces graminis; Growth factors; Growth studies; Population dynamics; Stenotaphrum secundatum
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| Geographic Terms: | Texas |
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| Abstract/Contents: | "Gaeumannomyces graminis var. graminis (Ggg) is an ectotrophic root infecting fungus that is the causal agent of take-all root rot of St. Augustinegrass (Stenotaphrum secundatum) and root decline of other warmseason turfgrasses. Ggg is also the etiological agent of crown sheath rot of rice (Oryza sativa). Colony morphologies of 76 Ggg isolates from St. Augustinegrass throughout Texas were examined on potato dextrose agar. Three distinctive phenotypic groups were found, where 10.5, 80.3, and 9.2% of the isolates were highly melanized with a round colony formation (termed M group), non to slightly melanized with a round colony formation (termed L group), and slow-growing and highly melanized exhibiting an irregular or filamentous colony formation (termed H group), respectively. The M group grew faster at 30°C and was significantly more aggressive than L and H groups based on a rice seedling pathogenicity assay. A maximum likelihood phylogenetic analysis based on partial sequences of internal transcribed spacer and large subunit of the ribosomal DNA, supported that M, L, and H groups were separated into different clades and were associated with other Ggg sequences retrieved from the NCBI GenBank database. M, L, and H groups were also distinct from G. graminis varieties tritici and avenae. To our knowledge, this is the first study to describe the population diversity of Ggg with regards to morphological and biological characterization and genetic background." |
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| Language: | English |
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| References: | 0 |
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| Note: | This item is an abstract only! |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Zidek, M., and Y. K. Jo. 2015. Population diversity of Gaeumannomyces graminis var. graminis from St. Augustinegrass in Texas. Phytopathology. 105(11S):p. S4.160. |
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| Web URL(s):
http://apsjournals.apsnet.org/doi/pdf/10.1094/PHYTO-105-11-S4.1#page=160
Last checked: 12/14/2015
Requires: PDF Reader
Notes: Item is within a single large file |
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MSU catalog number: b2219736a |
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