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Web URL(s): | http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3592366/ Last checked: 10/8/2013 Notes: Item is within a single large file http://journals.fcla.edu/jon/article/view/81586/78715 Last checked: 08/17/2018 Requires: PDF Reader Notes: Item is within a single large file |
Publication Type:
| Report |
Author(s): | Shaver, J. Bradley;
Agudelo, P.;
Martin, S. B. |
Author Affiliation: | School of Agricultural, Forest, and Environmental Sciences, Clemson University, Clemson, SC |
Title: | Pathogenicity of Trichodorus obtusus on zoysiagrass in South Carolina |
Section: | Abstracts Other records with the "Abstracts" Section
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Source: | Journal of Nematology. Vol. 44, No. 4, December 2012, p. 490. |
Publishing Information: | Lawrence, Kansas: Society of Nematologists |
# of Pages: | 1 |
Related Web URL: | http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3592366/pdf/447.pdf Last checked: 10/8/2013 Requires: Adobe Acrobat Notes: Document is within a single large file |
Keywords: | TIC Keywords: Cultivar evaluation; Pathogenicity; Research; Trichodorus; Zoysia japonica
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Cultivar Names: | Empire |
Geographic Terms: | South Carolina, United States |
Abstract/Contents: | "A population of Trichodorus obtusus was found infecting a stand of Empire zoysiagrass (Zoysia japonica) in Hampton County, South Carolina in 2011. Symptoms in the field included thin, chlorotic turf with short, stubby and necrotic roots. Soil samples from these areas showed T. obtusus to be associated consistently with symptomatic turf (range per 100 cc soil). A greenhouse study was conducted to determine the pathogenicity of the nematode on Empire zoysiagrass. Cores of 10.16 cm in diameter by 15.24 cm in depth were taken from the symptomatic stand of zoysiagrass, where initial densities averaged 80 individuals per 100 cm3 soil. The top 2.54 cm of turf and thatch from each core was removed and set aside. The remaining soil was bulked, mixed, and packed into 10.16 cm x 15.24 cm columns. The original 2.54 cm layer of sod was replanted and allowed to grow for 140 days. At the end of the experiment, the average density of T. obtusus was 230 individuals per 100 cm3 of soil, which indicates that Empire zoysiagrass is a suitable host for T. obtusus. Roots from each column were washed to examine symptoms. Roots were short and stubby and similar in appearance to those originally observed in the field. Towards the end of the study, the plants became prone to wilting and required more frequent watering. This population of T. obtusus was compared to other trichodorid isolates, including a T. obtusus isolated from 419 bermudagrass (Cynodon dactylon x C. transvaalensis), populations of Paratrichodorus minor from bermudagrass and centipedegrass (Eremochloa ophiuroides) from South Carolina, and two populations of T. obtusus from Florida. Morphological characterization was performed by measuring 20 adults from each population. Following morphological confirmation, molecular characterization was performed by sequencing a ca 1.7 kb region within the 18S rDNA. To our knowledge this is the first report of T. obtusus on zoysiagrass and the first report of the nematode in South Carolina." |
Language: | English |
References: | 0 |
Note: | This item is an abstract only! |
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete): Shaver, J. B., P. Agudelo, and S. B. Martin. 2012. Pathogenicity of Trichodorus obtusus on zoysiagrass in South Carolina. J. Nematol. 44(4):p. 490. |
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| Web URL(s): http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3592366/ Last checked: 10/8/2013 Notes: Item is within a single large file http://journals.fcla.edu/jon/article/view/81586/78715 Last checked: 08/17/2018 Requires: PDF Reader Notes: Item is within a single large file |
| MSU catalog number: b2224870a |
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