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Rhizosphere colonization by Serratia marcescens for the control of Sclerotium rolfsii
Year:
1987
Source of publication :
Soil Biology and Biochemistry
Authors :
Elad, Yigal
;
.
Volume :
19
Co-Authors:
Ordentlich, A., Department of Plant Pathology and Microbiology, The Hebrew University of Jerusalem, Faculty of Agriculture, Rehovot, 76100, Israel
Elad, Y., Department of Plant Pathology, ARO, Volcani Center, Bet Dagan, 50250, Israel
Chet, I., Department of Plant Pathology and Microbiology, The Hebrew University of Jerusalem, Faculty of Agriculture, Rehovot, 76100, Israel
Facilitators :
From page:
747
To page:
751
(
Total pages:
5
)
Abstract:
Two-hundred and three different strains of bacteria were isolated from the rhizosphere of bean, peanut and chickpea plants grown in Sclerotium rolfsii infested soil. A bacterium, identified as Serratia marcescens, was found to be the best biocontrol agent of the pathogen, under greenhouse conditions (up to 75% disease reduction). Populations of 105 or 106 CFU g-1 soil were the most effective in disease control. The drench and drip application of S. marcescens suspension were more effective in controlling S. rolfsii than spraying, mixing in soil or seed coating. This bacterium significantly reduced damping-off incidence of bean, caused by Rhizoctonia solani, by 50%, but was not effective against Pythium aphanidematum in cucumber. A natural mutant of S. marcescens, resistant to the antibiotic rifampicin, was isolated. The mutant, effective as the wild type, was used to study rhizosphere colonization. The highest population density of the bacteria was found on the proximal portion of the root, decreasing significantly until the tips, where they increased again. © 1987.
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More details
DOI :
10.1016/0038-0717(87)90058-7
Article number:
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
19898
Last updated date:
02/03/2022 17:27
Creation date:
16/04/2018 23:32
Scientific Publication
Rhizosphere colonization by Serratia marcescens for the control of Sclerotium rolfsii
19
Ordentlich, A., Department of Plant Pathology and Microbiology, The Hebrew University of Jerusalem, Faculty of Agriculture, Rehovot, 76100, Israel
Elad, Y., Department of Plant Pathology, ARO, Volcani Center, Bet Dagan, 50250, Israel
Chet, I., Department of Plant Pathology and Microbiology, The Hebrew University of Jerusalem, Faculty of Agriculture, Rehovot, 76100, Israel
Rhizosphere colonization by Serratia marcescens for the control of Sclerotium rolfsii
Two-hundred and three different strains of bacteria were isolated from the rhizosphere of bean, peanut and chickpea plants grown in Sclerotium rolfsii infested soil. A bacterium, identified as Serratia marcescens, was found to be the best biocontrol agent of the pathogen, under greenhouse conditions (up to 75% disease reduction). Populations of 105 or 106 CFU g-1 soil were the most effective in disease control. The drench and drip application of S. marcescens suspension were more effective in controlling S. rolfsii than spraying, mixing in soil or seed coating. This bacterium significantly reduced damping-off incidence of bean, caused by Rhizoctonia solani, by 50%, but was not effective against Pythium aphanidematum in cucumber. A natural mutant of S. marcescens, resistant to the antibiotic rifampicin, was isolated. The mutant, effective as the wild type, was used to study rhizosphere colonization. The highest population density of the bacteria was found on the proximal portion of the root, decreasing significantly until the tips, where they increased again. © 1987.
Scientific Publication
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