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| Publication Type:
| Report |
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| Content Type: | Abstract or Summary only |
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| Author(s): | Guglielmoni, Mirta;
Clarke, Bruce;
Kobayashi, Donald |
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| Author Affiliation: | Department of Plant Pathology, Rutgers University, New Brunswick, New Jersey |
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| Title: | Isolation of chitinase producing bacteria for the control of Magnaporthe poae, causal agent of summer patch |
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| Section: | Poster presentation
Other records with the "Poster presentation" Section
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| Meeting Info.: | Cook College, Rutgers, NJ: January 15-16, 1993 |
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| Source: | Proceedings of the Second Annual Rutgers TurfgrassSymposium. Vol. 2, 1993, p. 20. |
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| Publishing Information: | New Brunswick, NJ: Center for Turfgrass Science, Cook College, Rutgers, The State University of New Jersey |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Chitinase; Bacteria; Magnaporthe poae; Summer patch; Cool season turfgrasses; Fungi; Systemic fungicides; Cultural methods; Biological control; Disease control; Poa pratensis; Serratia marcescens; Stenotrophomonas maltophilia
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| Abstract/Contents: | "Summer patch is a soil-borne disease of cool-seasoned grasses caused by the fungus, Magnaporthe poae. The fungus exists on the surface of turfgrass roots until appropriate conditions, which include high soil temperatures and high soil moisture, allow disease symptoms to develop. Present methods for control of the disease include the use of systemic fungicides and good cultural practices that prevent root stress. The development of biological control could potentially provide an alternative method of control for this disease. One approach to developing biocontrol agents against summer patch involves isolating bacteria that can degrade the cell wall of M. poae. These bacteria, which have the capibility of destructively parasitizing the fungus, are targeted to reduce the inoculum of the pathogen within the soil. A baiting technique using mycelia of M. poae was utilized to isolate bacteria from soil sources previously known to harbor the pathogen. Mycelia grown on various supports were recovered from the soils in which they were buried for 24 to 72 hours, and were vigorously washed with distilled water prior to plating onto agar media. Individual bacterial colonies were selected, and were further screened for chitinase activity on chitin-amended media, since chitin is a major cell wall constituent of M. poae. Selected chitinase-producing bacteria were evaluated for the ability to suppress summer patch disease symptom development on Kentucky bluegrass in growth chamber studies using a conetainer assay. Several of these bacterial isolates, which include isolated identified as Serratia marcescens and Xanthomonas maltophilia, were observed to reduce disease severity in these studies." |
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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):
Guglielmoni, M., B. Clarke, and D. Kobayashi. 1993. Isolation of chitinase producing bacteria for the control of Magnaporthe poae, causal agent of summer patch. Proc. Annu. Rutgers Turfgrass Symp. 2:p. 20. |
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MSU catalog number: SB 433 .R88 |
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