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Soil suppressiveness by organic amendment to Fusarium disease in cucumber: effect on pathogen and host
Year:
2016
Source of publication :
Phytoparasitica
Authors :
Gamliel, Abraham
;
.
Klein, Eyal
;
.
Volume :
44
Co-Authors:
Klein, E., Laboratory for Pest Management Research, Institute of Agricultural Engineering, ARO, The Volcani Center, Bet Dagan, Israel, Department of Plant Pathology and Microbiology, The Hebrew University of Jerusalem, The Robert H. Smith Faculty of Agriculture, Food, and Environment, Rehovot, Israel
Katan, J., Department of Plant Pathology and Microbiology, The Hebrew University of Jerusalem, The Robert H. Smith Faculty of Agriculture, Food, and Environment, Rehovot, Israel
Gamliel, A., Laboratory for Pest Management Research, Institute of Agricultural Engineering, ARO, The Volcani Center, Bet Dagan, Israel
Facilitators :
From page:
239
To page:
249
(
Total pages:
11
)
Abstract:
Soil suppressiveness to Fusarium wilt and crown rot disease, caused by Fusarium oxysporum f. sp. radicis-cucumerinum in cucumber, develops following the incorporation of wild rocket (Diplotaxis tenuifolia (L.) DC.) crop residues, manifested as reduction in disease incidence. We studied mechanisms that might be involved in disease suppression. Exposure of nonamended-nonsuppressive soil to volatile organic compounds generated from wild rocket decomposing in the soil induced soil suppressiveness to Fusarium disease in nonamended soil. Similarly, a crude aqueous soil extract from wild rocket-amended (suppressive) soil induced suppressiveness to Fusarium disease when cucumber seedlings were transplanted into nonsuppressive soil amended with this soil extract. Suppressive soils did not show any effect on F. oxysporum f. sp. radicis-cucumerinum macroconidial germination, mycelium growth or new chlamydospore production. Root colonization with Fusarium spp. was suppressed in inoculated plants after 6 days, but not after 3 days. No evidence for induced resistance was found when plants were first grown in suppressive soil followed by inoculation and transplanting in nonsuppressive soil, or when plants were inoculated with Botrytis cinerea. Findings suggest that the microorganisms perpetuate the mechanisms of suppressiveness following the introduction of organic amendments, and that this occurs in the root zone. © 2016, Springer Science+Business Media Dordrecht.
Note:
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More details
DOI :
10.1007/s12600-016-0512-7
Article number:
0
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
31274
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 01:01
Scientific Publication
Soil suppressiveness by organic amendment to Fusarium disease in cucumber: effect on pathogen and host
44
Klein, E., Laboratory for Pest Management Research, Institute of Agricultural Engineering, ARO, The Volcani Center, Bet Dagan, Israel, Department of Plant Pathology and Microbiology, The Hebrew University of Jerusalem, The Robert H. Smith Faculty of Agriculture, Food, and Environment, Rehovot, Israel
Katan, J., Department of Plant Pathology and Microbiology, The Hebrew University of Jerusalem, The Robert H. Smith Faculty of Agriculture, Food, and Environment, Rehovot, Israel
Gamliel, A., Laboratory for Pest Management Research, Institute of Agricultural Engineering, ARO, The Volcani Center, Bet Dagan, Israel
Soil suppressiveness by organic amendment to Fusarium disease in cucumber: effect on pathogen and host
Soil suppressiveness to Fusarium wilt and crown rot disease, caused by Fusarium oxysporum f. sp. radicis-cucumerinum in cucumber, develops following the incorporation of wild rocket (Diplotaxis tenuifolia (L.) DC.) crop residues, manifested as reduction in disease incidence. We studied mechanisms that might be involved in disease suppression. Exposure of nonamended-nonsuppressive soil to volatile organic compounds generated from wild rocket decomposing in the soil induced soil suppressiveness to Fusarium disease in nonamended soil. Similarly, a crude aqueous soil extract from wild rocket-amended (suppressive) soil induced suppressiveness to Fusarium disease when cucumber seedlings were transplanted into nonsuppressive soil amended with this soil extract. Suppressive soils did not show any effect on F. oxysporum f. sp. radicis-cucumerinum macroconidial germination, mycelium growth or new chlamydospore production. Root colonization with Fusarium spp. was suppressed in inoculated plants after 6 days, but not after 3 days. No evidence for induced resistance was found when plants were first grown in suppressive soil followed by inoculation and transplanting in nonsuppressive soil, or when plants were inoculated with Botrytis cinerea. Findings suggest that the microorganisms perpetuate the mechanisms of suppressiveness following the introduction of organic amendments, and that this occurs in the root zone. © 2016, Springer Science+Business Media Dordrecht.
Scientific Publication
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