Full TGIF Record # 25380
Item 1 of 1
Publication Type:
i
Refereed
Author(s):Sarniguet, A.; Lucas, P.
Author Affiliation:Station de Pathologie vegetale, Centre de Recherches de Rennes
Title:Evaluation of populations of fluorescent pseudomonads related to decline of take-all patch on turfgrass
Source:Plant and Soil. Vol. 145, No. 1, September 1992, p. 11-15.
# of Pages:5
Publishing Information:Dordrecht, Netherland: Martinus Nijhoff Publishers
Related Web URL:http://link.springer.com/article/10.1007/BF00009536
    Last checked: 10/14/2015
    Notes: Abstract only
Keywords:TIC Keywords: Pseudomonas; Gaeumannomyces graminis var. avenae; Take-all patch; Soil analysis
Abstract/Contents:"Take-all on turfgrass caused by Gaeumannomyces graminis var. avenae (Gga) occurs as patches of yellowish plants. On some patches the central zone was recolonized by the same grass species, Festuca sp., previously damaged by the fungus despite the centrifugal extension of the disease. This disease remission was assimilated to decline. Rhizosphere bacterial counts showed that total population of bacteria was nearly the same in all zones across the patches. However, the ratio of fluorescent Pseudomonas spp./total bacteria was 1/22, 1/15.4, 1/3.5 and 1/2.9 in the disease free area, the front margin of the patch, in the damaged part of the patch, and in the recolonized central part respectively. Furthermore, in this last mentioned zone, 44 to 82% of the fluorescent Pseudomonas app. were antagonistic in vitro to Gga, whereas only 12 to 34% from the disease free area were antagonistic. So the development of take-all on turf induced quantitiative and qualitative changes in populations of fluorescent pseudomonads. The remission of the disease in the center was correlated to higher amount of antagonistic fluorescent pseudomonads in this part of the patches. This typical patch with the well defined zones can provide a good model for the study of changes in bacterial populations related to the build up of take-all decline."
Language:English
References:8
Note:Pictures, b/w
Tables
Graphs
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Sarniguet, A., and P. Lucas. 1992. Evaluation of populations of fluorescent pseudomonads related to decline of take-all patch on turfgrass. Plant Soil. 145(1):p. 11-15.
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