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Web URL(s): | http://www.apsnet.org/publications/PlantDisease/BackIssues/Documents/1986Abstracts/PD_70_801f.htm Last checked: 10/13/2015 |
Publication Type:
| Report |
Content Type: | Abstract or Summary only |
Author(s): | McBeath, J. H.;
Adelman, M. |
Author Affiliation: | Agricultural and Forestry Experiment Station, University of Alaska, Fairbanks |
Title: | Halo Blight (Pseudomonas syringae pv. coronafaciens) on Grasses in Interior Alaska. |
Source: | Plant Disease. Vol. 70, No. 8, August 1986, p. 801. |
Publishing Information: | St. Paul, Minn., American Phytopathological Society |
Keywords: | TIC Keywords: Halo blight; Pseudomonas coronafaciens; Pseudomonas syringae; Bromus inermis; Poa pratensis; Calamagrostis canadensis; King's Medium B agar; Agar; Arginine
|
Geographic Terms: | Alaska, USA |
Abstract/Contents: | "Severe leaf blight was observed on smooth bromegrass (Bromus inermis Leyss.) in Fairbanks and Delta-Clearwater areas of Alaska during the summer of 1985. Similar symptoms were also observed on Kentucky bluegrass (Poa pratensis L.) and bluejoint (Calamagrostis canadensis (Michx.) Beauv.), a grass species indigenous to Alaska. After prolonged cool, rainy weather in June, large numbers of small, purplish brown lesions appeared on the leaf blades and sheaths of the grasses. The lesions increased in size and many were surrounded by a bright yellow halo. A fluorescent, gram-negative, oxidase-negative, arginine-dihydrolase-negative pseudomonad was consistently recovered on Kings's medium B (KMB) agar from lesions on diseased plants of all three grass species. The bacterium was identified as Pseudomonas syringae pv. coronafaciens (Elliott) Young et al by colony morphology on KMB and by physiological-biochemical tests. Pathogenicity was confirmed on greenhouse tests. This is the first report of halo blight on Alaska native grasses and the first recording of a pathogenic pseudomonad on any plant in Alaska. |
Language: | English |
References: | 2 |
Note: | This item is an abstract only! |
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete): McBeath, J. H., and M. Adelman. 1986. Halo Blight (Pseudomonas syringae pv. coronafaciens) on Grasses in Interior Alaska.. Plant Dis. 70(8):p. 801. |
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| Web URL(s): http://www.apsnet.org/publications/PlantDisease/BackIssues/Documents/1986Abstracts/PD_70_801f.htm Last checked: 10/13/2015 |
| MSU catalog number: SB 599 .P95 |
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