• Castellano
  • English
  • Valenciá
Página de inicio de ReDivia
Página de la Generalitat ValenciáPágina de IVIA
View Item 
  •   ReDivia Home
  • 1.- Investigación
  • 1.1.- Artículos de revista académica
  • View Item
  •   ReDivia Home
  • 1.- Investigación
  • 1.1.- Artículos de revista académica
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

Sudden death of citrus in Brazil: A graft-transmissible bud union disease

Export
untranslatedRefworks
URI
http://hdl.handle.net/20.500.11939/4437
DOI
10.1094/PDIS.2004.88.5.453
URL
https://apsjournals.apsnet.org/doi/10.1094/PDIS.2004.88.5.453
Derechos de acceso
openAccess
Metadata
Show full item record
Author
Roman, M. P.; Cambra, Mariano; Juárez, José; Moreno, Pedro; Durán-Vila, Núria; Tanaka, F. A. O.; Alves, E.; Kitajima, Elliot W.; Yamamoto, P. T.; Bassanezi, R. B.; Teixeira, D. C.; Junior, W. C. J.; Ayres, A. J.; Gimenes-Fernandes, N.; Rabenstein, F.; Girotto, L. F.; Bove, J. M.
Date
2004
Cita bibliográfica
Roman, M. P., Cambra, M., Juarez, J., Moreno, P., Duran-Vila, N., Tanaka, F. A. O. et al. (2004). Sudden death of citrus in Brazil: A graft-transmissible bud union disease. Plant Disease, 88(5), 453-467.
Abstract
Citrus Sudden Death (CSD), a new, graft-transmissible disease of sweet orange and mandarin trees grafted on Rangpur lime rootstock, was first seen in 1999 in Brazil, where it is present in the southern Triângulo Mineiro and northwestern São Paulo State. The disease is a serious threat to the citrus industry, as 85% of 200 million sweet orange trees in the State of São Paulo are grafted on Rangpur lime. After showing general decline symptoms, affected trees suddenly collapse and die, in a manner similar to trees grafted on sour orange rootstock when affected by tristeza decline caused by infection with Citrus tristeza virus (CTV). In tristeza-affected trees, the sour orange bark near the bud union undergoes profound anatomical changes. Light and electron microscopic studies showed very similar changes in the Rangpur lime bark below the bud union of CSD-affected trees: size reduction of phloem cells, collapse and necrosis of sieve tubes, overproduction and degradation of phloem, accumulation of nonfunctioning phloem (NFP), and invasion of the cortex by old NFP. In both diseases, the sweet orange bark near the bud union was also affected by necrosis of sieve tubes, and the phloem parenchyma contained characteristic “chromatic” cells. In CSD-affected trees, these cells were seen not only in the sweet orange phloem, but also in the Rangpur lime phloem. Recent observations indicated that CSD affected not only citrus trees grafted on Rangpur lime but also those on Volkamer lemon, with anatomical symptoms similar to those seen in Rangpur lime bark. Trees on alternative rootstocks, such as Cleopatra mandarin and Swingle citrumelo, showed no symptoms of CSD. CSD-affected trees did recover when they were inarched with seedlings of these rootstocks, but not when inarched with Rangpur lime seedlings. These results indicate that CSD is a bud union disease. In addition, the bark of inarched Rangpur lime and Volkamer lemon seedlings showed, near the approach-graft union, the same anatomical alterations as the bud union bark from the Rangpur lime rootstock in CSD-affected trees. The dsRNA patterns from CSD-affected trees and unaffected trees were similar and indicative of CTV. CSD-affected trees did not react by immunoprinting-ELISA using monoclonal antibodies against 11 viruses. No evidence supported the involvement of viroids in CSD. The potential involvement of CTV and other viruses in CSD is discussed.
Collections
  • 1.1.- Artículos de revista académica

Browse

All of ReDiviaCommunities & CollectionsBy Issue DateAuthorsTitlesSubjetcsCategoriesIVIA CentersThis CollectionBy Issue DateAuthorsTitlesSubjetcsCategoriesIVIA Centers

My Account

LoginRegister

Statistics

View Usage Statistics

Of interest

IVIA Open Access PolicyIntellectual property and copyrightAutoarchiveFrequently Asked Questions

Indexers

Recolectauntranslated

El contenido de este sitio está bajo una licencia Creative Commons - No comercial - Sin Obra Derivada (by-nc-nd), salvo que se indique lo contrario.