Survey of Ectotrophic Root Infecting Fungi Associated With Turfgrass Patch Diseases in Italy

Titone, P.; Mocioni, M.; Landschoot, Peter J.; Gullino, M. L.

doi:10.17660/actahortic.2004.661.65

Cited by 3 publications

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“…), St. Augustinegrass ( Stenotaphrum secundatum Kuntze), and kikuyugrass ( Pennisetum clandestinum Hochst). Inoculation of O. korrae and O. narmari resulted in successful infection of wheat ( Triticum aestivum L.), oats ( Avena sativa L.), barley ( Hordeum vulgare L.), and rice ( Oryza sativa L.) (Titone et al, 2004; Walker and Smith, 1972).…”

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confidence: 99%

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Reactive Oxygen Species Production and Alternative Hosts of Spring Dead Spot–Causing Fungi

Flores

Marek

Anderson

et al. 2017

Intl Turfgrass Soc Res J

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Three fungi in the genus Ophiosphaerella,—O. herpotricha, O. korrae, and O. narmari—are the causal agents of spring dead spot of bermudagrass. The extent to which Ophiosphaerella spp. can colonize and infect other plant hosts and the mechanism by which they render host cells necrotic remain unknown. In other plant–pathogen interactions, it has been shown that the hypersensitive response (HR), initiated by the formation of reactive oxygen species (ROS) in the host, can promote the infection of necrotrophic fungi. The objectives of these studies were to investigate the formation of ROS during infection of plant cells and to characterize the host range of Ophiosphaerella spp. To assess ROS production, roots of three bermudagrass cultivars—Tifway 419, Midlawn, and U3—were each inoculated with an isolate of either O. herpotricha or O. korrae. The roots were stained with 2′,7′‐dichlorofluorescein diacetate at 4 to 74 h after inoculation. Staining of root cells indicated formation of ROS in response to fungal infection. The cultivar U3, which is tolerant to spring dead spot, is more likely to form high levels of ROS than the interspecific hybrid cultivars Midlawn and Tifway 419. To determine the potential host range of O. herpotricha and O. korrae, several warm‐season grasses, cool‐season grasses, and dicotyledonous plants were evaluated for colonization at 2 to 14 d after inoculation. The colonization process was similar for O. herpotricha and O. korrae on most plant species tested. Grass plant roots were readily colonized, and some showed symptoms of necrosis. The dicot plants evaluated were nonhosts. Significantly higher ROS production by the tolerant bermudagrass cultivar U3 suggests that root necrosis caused by Ophiosphaerella spp. is independent of HR associated with plant‐generated ROS. Colonization studies show that these fungi have a broad monocotyledonous host range.

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“…Ophiosphaerella korrae is also the causal agent of necrotic ring spot of cool-season grasses, including Kentucky bluegrass (Poa pratensis L.) (Worf et al, 1986), creeping red fescue (Festuca rubra L. subsp, rubra Smith) (Dernoeden et al, 1995), and annual bluegrass (Poa annua L.) (Landschoot, 1996). Smith (1965) (Titone et al, 2004;Walker and Smith, 1972).…”

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Reactive Oxygen Species Production and Alternative Hosts of Spring Dead Spot–Causing Fungi

Flores

Marek

Anderson

et al. 2017

Intl Turfgrass Soc Res J

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Fifteen years of findings: Advancements in spring dead spot research from 2009 to 2024

Hutchens,

Anders,

Butler

et al. 2024

Crop Science

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Spring dead spot (Ophiosphaerella spp.; SDS) is one of the most detrimental diseases to warm‐season turfgrasses, particularly bermudagrass (Cynodon spp.), growing in climates where cold temperatures induce dormancy. The pathogen can infect the crowns, stolons, rhizomes, and roots of bermudagrass most of the year, but infection in the fall predisposes the turf to winter injury and plant death. Symptoms typically appear the following spring, making management of SDS challenging. Moreover, the biology, epidemiology, and management of SDS are not fully understood. Ample research has been conducted on SDS which was thoroughly summarized before 2009 by Tredway et al. Since then, 18 new research papers have been published over the last 15 years that have further clarified the biology, epidemiology, and management of SDS. This review seeks to compile, update, and summarize research developments on SDS from 2009 to 2024. Research developments over the last 15 years include an increased understanding of the biology and infection mechanisms of the Ophiosphaerella species that cause SDS, a greater knowledge of the epidemiology of the disease and factors that affect its distribution, as well as improved cultural and chemical management practices for SDS.

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Cool-Weather Fungal Diseases of Mown Grasses

2024

Biology and Integrated Management of Turfgrass Diseases

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Survey of Ectotrophic Root Infecting Fungi Associated With Turfgrass Patch Diseases in Italy

Cited by 3 publications

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Reactive Oxygen Species Production and Alternative Hosts of Spring Dead Spot–Causing Fungi

Reactive Oxygen Species Production and Alternative Hosts of Spring Dead Spot–Causing Fungi

Fifteen years of findings: Advancements in spring dead spot research from 2009 to 2024

Cool-Weather Fungal Diseases of Mown Grasses

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