Distribution of carnation viruses in the shoot tip: Exclusion from the shoot apical meristem

Cell biological tools were used to localize the genomic RNAs/DNA and/or the coat protein (CP) of Carnation mottle, Carnation vein mottle, Carnation latent, and Carnation etched ring viruses in the carnation shoot tip to know whether any of them was capable of infecting the shoot apical meristem. Our...

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Bibliographic Details
Published in:Physiological and molecular plant pathology 2006-07, Vol.69 (1), p.43-51
Main Authors: Gosalvez-Bernal, B., Garcia-Castillo, S., Pallas, V., Sanchez-Pina, M.A.
Format: Article
Language:English
Subjects:
Biological and medical sciences
Carnation etched ring virus
Carnation latent virus
Carnation mottle virus
Carnation vein mottle virus
cv. Dixie
Dianthus caryophyllus
Fundamental and applied biological sciences. Psychology
Immunohistochemistry
In situ hybridization
Phytopathology. Animal pests. Plant and forest protection
Shoot apical meristem
Shoot tip
Single and mixed viral infection
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Summary:Cell biological tools were used to localize the genomic RNAs/DNA and/or the coat protein (CP) of Carnation mottle, Carnation vein mottle, Carnation latent, and Carnation etched ring viruses in the carnation shoot tip to know whether any of them was capable of infecting the shoot apical meristem. Our results showed that all the viruses studied were excluded not only in single-infected but also in double-infected plants. Despite that, these viruses showed a different infection pattern inside the shoot tip, with different cell types being their main targets. For the mixed infection studied here, our results showed the existence of a spatial separation pattern within the carnation shoot tip which strongly suggests an exclusion phenomenon.
ISSN:0885-5765
1096-1178
DOI:10.1016/j.pmpp.2006.12.004