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Scytalidium wilt of citrus
Year:
2001
Authors :
Kimchi, Miriam
;
.
Solel, Zvi
;
.
Volume :
107
Co-Authors:
Oren, Y., Ministry of Agriculture, Bet Dagan 50250, Israel
Sadowsky, A., Ministry of Agriculture, Bet Dagan 50250, Israel
Gefen, D., Ministry of Agriculture, Bet Dagan 50250, Israel
Solel, Z., Agricultural Research Organization, Bet Dagan 50250, Israel
Kimchy, M., Agricultural Research Organization, Bet Dagan 50250, Israel
Facilitators :
From page:
467
To page:
470
(
Total pages:
4
)
Abstract:
In July 1998, a sudden wilt of 'Star Ruby' grapefruit (Citrus paradisi Macf.) occurred in Israel in a region with a warm Mediterranean climate. The wilt of the middle and upper canopy of main limbs was accompanied by gum oozing from the affected branches. The bark of these branches attained a dark colour and the epidermis sloughed off easily revealing a mass of black powder, resulting from copious sporulation of dark conidia. Both the bark and the xylem were intensively colonized with mycelium. The fungus was identified as Scytalidium lignicola Pesante, based on the characteristic mixture of some colourless and dark conidia, produced in branched chains by conversion of the vegetative hyphae. Artificial inoculations induced typical disease symptoms and the fungus was reisolated, thus confirming Koch's postulates. Similar symptoms appeared in 'Star Ruby' interim segments which had been cut and top grafted with various citrus cultivars. This is the first detailed report of pathogenicity of S. lignicola to citrus trees. It is postulated that the disease developed after predisposition of 'Star Ruby' grapefruit trees by comprehensive pruning followed by extremely hot conditions.
Note:
Related Files :
color
disease
genetic susceptibility
Israel
Plant Disease
Plant pathogen
pruning
wilting
Show More
Related Content
More details
DOI :
10.1023/A:1011283318617
Article number:
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
26591
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:24
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Scientific Publication
Scytalidium wilt of citrus
107
Oren, Y., Ministry of Agriculture, Bet Dagan 50250, Israel
Sadowsky, A., Ministry of Agriculture, Bet Dagan 50250, Israel
Gefen, D., Ministry of Agriculture, Bet Dagan 50250, Israel
Solel, Z., Agricultural Research Organization, Bet Dagan 50250, Israel
Kimchy, M., Agricultural Research Organization, Bet Dagan 50250, Israel
Scytalidium wilt of citrus
In July 1998, a sudden wilt of 'Star Ruby' grapefruit (Citrus paradisi Macf.) occurred in Israel in a region with a warm Mediterranean climate. The wilt of the middle and upper canopy of main limbs was accompanied by gum oozing from the affected branches. The bark of these branches attained a dark colour and the epidermis sloughed off easily revealing a mass of black powder, resulting from copious sporulation of dark conidia. Both the bark and the xylem were intensively colonized with mycelium. The fungus was identified as Scytalidium lignicola Pesante, based on the characteristic mixture of some colourless and dark conidia, produced in branched chains by conversion of the vegetative hyphae. Artificial inoculations induced typical disease symptoms and the fungus was reisolated, thus confirming Koch's postulates. Similar symptoms appeared in 'Star Ruby' interim segments which had been cut and top grafted with various citrus cultivars. This is the first detailed report of pathogenicity of S. lignicola to citrus trees. It is postulated that the disease developed after predisposition of 'Star Ruby' grapefruit trees by comprehensive pruning followed by extremely hot conditions.
Scientific Publication
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