אסיף מאגר המחקר החקלאי

The movement and distribution of citrus tristeza virus and citrus exocortis viroid in citrus seedlings

Year:

1995

Source of publication :

Authors :

Volume :

126

Co-Authors:

GAFNY, R., S Tolkowsky Laboratory, Department of Virology, Agricultural Research Organization, Israel
MOGILNER, N., S Tolkowsky Laboratory, Department of Virology, Agricultural Research Organization, Israel
NITZAN, Y., Department of Plant Protection, Ministry of Agriculture, Bet Dagan, 50250, Israel
BEN‐SHALOM, J., S Tolkowsky Laboratory, Department of Virology, Agricultural Research Organization, Israel
BAR‐JOSEPH, M., S Tolkowsky Laboratory, Department of Virology, Agricultural Research Organization, Israel

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Abstract:

The systemic movement of citrus tristeza virus (CTV) in sour orange Citrus aurantium seedlings and of citrus exocortis viroid (CEVd) in Etrog citron C. medica seedlings was studied. The movement of the two pathogens was analysed by detection in sections of roots and stems at different time intervals. Both pathogens were detected initially in the basal parts and the roots and subsequently spread to the shoot. CTV and CEVd moved in young citrus seedlings at similar rates. The findings are consistent with long distance phloem transport of the virus and the viroid. The practical implications of the pattern of systemic movement for diagnosis of infected trees are discussed. Copyright © 1995, Wiley Blackwell. All rights reserved

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