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| DOI: | 10.17660/ActaHortic.2016.1122.6 |
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| Web URL(s): | http://www.actahort.org/members/showpdf?session=2801
Last checked: 02/06/2017
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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| Publication Type:
| Report |
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| Author(s): | Flores, F. J.;
Marek, S. M.;
Anderson, J. A.;
Mitchell, T. K.;
Walker, N. R. |
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| Author Affiliation: | Flores, Marek, Anderson, and Walker: Department of Entomology and Plant Pathology, Oklahoma State University, Stillwater, OK; Mitchell: Department of Plant Pathology, The Ohio State University, Columbus, Ohio |
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| Title: | Reactive oxygen species production in response to Ophiosphaerella spp. colonization of bermudagrass roots |
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| Section: | Turfgrass plant protection (weeds, insects, diseases)
Other records with the "Turfgrass plant protection (weeds, insects, diseases)" Section
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| Meeting Info.: | XXIX International Horticultural Congress on Horticulture: Sustainable Lives, Livelihoods and Landscapes: III International Conference on Turfgrass Management and Science for Sports Fields, Brisbane, Australia: 20-22 August 2014 |
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| Source: | Acta Horticulturae. Vol. 1122, 2016, p. 41-47. |
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| Publishing Information: | Leuven, Belgium: International Society for Horticultural Science |
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| # of Pages: | 7 |
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| Related Web URL: | http://www.actahort.org/books/1122/1122%5F6.htm
Last checked: 02/06/2017
Notes: Abstract only |
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| Keywords: | TIC Keywords: Cynodon dactylon; Cynodon dactylon x Cynodon transvaalensis; Disease resistance; Ophiosphaerella herpotricha; Ophiosphaerella korrae; Ophiosphaerella narmari; Physiological responses; Reactive oxygen species; Spring dead spot
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| Cultivar Names: | Tifway; Midlawn; U3 |
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| Abstract/Contents: | "Bermudagrass (Cynodon dactylon, C. transvaalensis and C. dactylon × C. transvaalensis) is a widely used sports turfgrass worldwide. One of the most damaging diseases of bermudagrass is spring dead spot (SDS), caused by Ophiosphaerella herpotricha, O. korrae, and O. narmari. These fungi are characterized as necrotrophic, but the mechanism by which they render host cells necrotic remains unknown. Necrotrophs can produce toxins and are able to exploit the host hypersensitive response (HR) to colonize and infect host cells. The objective of these studies was to investigate the formation of reactive oxygen species (ROS) during fungal infection of plant cells, which is a common feature of the HR. Roots of three bermudagrass cultivars, 'Tifway', 'Midlawn' and 'U3', were each inoculated with tdTOM-transformed isolate (red fluorescence) of O. herpotricha or O. korrae. The roots were stained with 2',7'-dichlorofluorescein diacetate at 4 to 72 h after inoculation. Roots were examined using bright-field and fluorescence microscopy. Based on positive staining, root cells were considered to have formed ROS in response to fungal infection. In C. dactylon cultivar U3, which is tolerant of SDS, higher levels of ROS were more likely to have been produced than in the interspecific hybrid cultivars Midlawn and Tifway. Formation of ROS was observed consistently at the hyphal tips of colonizing fungi in all cultivar/fungi combinations tested, with O. herpotricha producing ROS more frequently than O. korrae. These studies suggest that root necrosis caused by SDS fungi is independent of HR associated with plant-generated ROS. In addition, the increased production of ROS by SDS fungi at the time of root penetration suggests a role of fungal-produced ROS during SDS-fungal attack of bermudagrass." |
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| Language: | English |
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| References: | 24 |
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| Note: | ISBN: 978-9066055-22-3
Pictures, b/w
Tables |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Flores, F. J., S. M. Marek, J. A. Anderson, T. K. Mitchell, and N. R. Walker. 2016. Reactive oxygen species production in response to Ophiosphaerella spp. colonization of bermudagrass roots. Acta Horticulturae. 1122:p. 41-47. |
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| DOI: 10.17660/ActaHortic.2016.1122.6 |
| Web URL(s):
http://www.actahort.org/members/showpdf?session=2801
Last checked: 02/06/2017
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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MSU catalog number: b5848521 |
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