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אסיף מאגר המחקר החקלאי
פותח על ידי קלירמאש פתרונות בע"מ -
Spatial distribution and temporal development of fusarium crown and root rot of tomato and pathogen dissemination in field soil
Year:
1999
Source of publication :
Phytopathology
Authors :
שטיינברג, דני
;
.
Volume :
89
Co-Authors:
Rekah, Y., Dept. Plant Pathol. and Microbiol., Hebrew University of Jerusalem, Fac. Agric., Food Environ. Qual. S., Rehovot 76100, Israel
Shtienberg, D., Department of Plant Pathology, ARO, Volcani Center, Bet Dagan 50250, Israel
Katan, J., Dept. Plant Pathol. and Microbiol., Hebrew University of Jerusalem, Fac. Agric., Food Environ. Qual. S., Rehovot 76100, Israel
Facilitators :
From page:
831
To page:
839
(
Total pages:
9
)
Abstract:
The spatial distribution and temporal development of tomato crown and root rot, caused by Fusarium oxysporum f. sp. radicis-lycopersici, were studied in naturally infested fields in 1996 and 1997. Disease progression fit a logistic model better than a monomolecular one. Geostatistical analyses and semivariogram calculations revealed that the disease spreads from infected plants to a distance of 1.1 to 4.4 m during the growing season. By using a chlorate-resistant nitrate nonutilizing (nit) mutant of F. oxysporum f. sp. radicis-lycopersici as a 'tagged' inoculum, the pathogen was found to spread from one plant to the next via infection of the roots. The pathogen spread to up to four plants (2.0 m) on either side of the inoculated focus plant. Root colonization by the nit mutant showed a decreasing gradient from the site of inoculation to both sides of the inoculated plant. Simulation experiments in the greenhouse further established that this soilborne pathogen can spread from root to root during the growing season. These findings suggest a polycyclic nature of F. oxysporum f. sp. radicis-lycopersici, a deviation from the monocyclic nature of many non-zoosporic soilborne pathogens.
Note:
Related Files :
Fusarium
mycosis
nitrogen metabolism
pathogenesis
Plant Disease
population distribution
variogram
עוד תגיות
תוכן קשור
More details
DOI :
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
32366
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 01:09
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Scientific Publication
Spatial distribution and temporal development of fusarium crown and root rot of tomato and pathogen dissemination in field soil
89
Rekah, Y., Dept. Plant Pathol. and Microbiol., Hebrew University of Jerusalem, Fac. Agric., Food Environ. Qual. S., Rehovot 76100, Israel
Shtienberg, D., Department of Plant Pathology, ARO, Volcani Center, Bet Dagan 50250, Israel
Katan, J., Dept. Plant Pathol. and Microbiol., Hebrew University of Jerusalem, Fac. Agric., Food Environ. Qual. S., Rehovot 76100, Israel
Spatial distribution and temporal development of fusarium crown and root rot of tomato and pathogen dissemination in field soil
The spatial distribution and temporal development of tomato crown and root rot, caused by Fusarium oxysporum f. sp. radicis-lycopersici, were studied in naturally infested fields in 1996 and 1997. Disease progression fit a logistic model better than a monomolecular one. Geostatistical analyses and semivariogram calculations revealed that the disease spreads from infected plants to a distance of 1.1 to 4.4 m during the growing season. By using a chlorate-resistant nitrate nonutilizing (nit) mutant of F. oxysporum f. sp. radicis-lycopersici as a 'tagged' inoculum, the pathogen was found to spread from one plant to the next via infection of the roots. The pathogen spread to up to four plants (2.0 m) on either side of the inoculated focus plant. Root colonization by the nit mutant showed a decreasing gradient from the site of inoculation to both sides of the inoculated plant. Simulation experiments in the greenhouse further established that this soilborne pathogen can spread from root to root during the growing season. These findings suggest a polycyclic nature of F. oxysporum f. sp. radicis-lycopersici, a deviation from the monocyclic nature of many non-zoosporic soilborne pathogens.
Scientific Publication
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