Phytoplasma and virus detection in commercial plantings of Vitis vinifera cv. Merlot exhibiting premature berry dehydration

A new and devastating physiological disorder of Vitis vinifera cv. Merlot was recently reported, known as premature berry dehydration (PBD), which is characterized by plant growth reduction, induction of general senescence and pedicel necrosis in the fruit, causing significant reductions in vineyard...

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Autores principales:	Matus,José Tomás, Vega,Andrea, Loyola,Rodrigo, Serrano,Carolina, Cabrera,Soledad, Arce-Johnson,Patricio
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Valparaíso 2008
Materias:	berry shrinkage Candidatus phytoplasma mali late ripening over ripened pedicel necrosis phloem water transport
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582008000500007
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spelling	oai:scielo:S0717-345820080005000072009-06-16Phytoplasma and virus detection in commercial plantings of Vitis vinifera cv. Merlot exhibiting premature berry dehydrationMatus,José TomásVega,AndreaLoyola,RodrigoSerrano,CarolinaCabrera,SoledadArce-Johnson,Patricio berry shrinkage Candidatus phytoplasma mali late ripening over ripened pedicel necrosis phloem water transport A new and devastating physiological disorder of Vitis vinifera cv. Merlot was recently reported, known as premature berry dehydration (PBD), which is characterized by plant growth reduction, induction of general senescence and pedicel necrosis in the fruit, causing significant reductions in vineyard production. The causes of this disease remain unclear and previous reports suggest that it may be associated with phloem disruption and water provision. For this reason, any factor causing phloem disturbances could cause an important change in the berry water status. As some micro-organisms have been reported to disrupt phloem flow, we analyzed the occurrence of phytoplasma and viruses in commercial vineyards presenting PBD. In this study, a phytoplasma was detected by electron microscopy and nested PCR while virus infections were diagnosed by RT-PCR in samples collected during two growing seasons. The presence of phytoplasma only in samples from grape plants with PBD suggests that this pathogen may be one of the causal agents of this disorder. We suggest that the influence of other factors, such as virus infections, agronomic handling and environmental conditions also modulate berry dehydration. This is the first study at the microscopic and molecular levels that correlates phytoplasma presence with PBD.info:eu-repo/semantics/openAccessPontificia Universidad Católica de ValparaísoElectronic Journal of Biotechnology v.11 n.5 20082008-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582008000500007en10.4067/S0717-34582008000500007
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	berry shrinkage Candidatus phytoplasma mali late ripening over ripened pedicel necrosis phloem water transport
spellingShingle	berry shrinkage Candidatus phytoplasma mali late ripening over ripened pedicel necrosis phloem water transport Matus,José Tomás Vega,Andrea Loyola,Rodrigo Serrano,Carolina Cabrera,Soledad Arce-Johnson,Patricio Phytoplasma and virus detection in commercial plantings of Vitis vinifera cv. Merlot exhibiting premature berry dehydration
description	A new and devastating physiological disorder of Vitis vinifera cv. Merlot was recently reported, known as premature berry dehydration (PBD), which is characterized by plant growth reduction, induction of general senescence and pedicel necrosis in the fruit, causing significant reductions in vineyard production. The causes of this disease remain unclear and previous reports suggest that it may be associated with phloem disruption and water provision. For this reason, any factor causing phloem disturbances could cause an important change in the berry water status. As some micro-organisms have been reported to disrupt phloem flow, we analyzed the occurrence of phytoplasma and viruses in commercial vineyards presenting PBD. In this study, a phytoplasma was detected by electron microscopy and nested PCR while virus infections were diagnosed by RT-PCR in samples collected during two growing seasons. The presence of phytoplasma only in samples from grape plants with PBD suggests that this pathogen may be one of the causal agents of this disorder. We suggest that the influence of other factors, such as virus infections, agronomic handling and environmental conditions also modulate berry dehydration. This is the first study at the microscopic and molecular levels that correlates phytoplasma presence with PBD.
author	Matus,José Tomás Vega,Andrea Loyola,Rodrigo Serrano,Carolina Cabrera,Soledad Arce-Johnson,Patricio
author_facet	Matus,José Tomás Vega,Andrea Loyola,Rodrigo Serrano,Carolina Cabrera,Soledad Arce-Johnson,Patricio
author_sort	Matus,José Tomás
title	Phytoplasma and virus detection in commercial plantings of Vitis vinifera cv. Merlot exhibiting premature berry dehydration
title_short	Phytoplasma and virus detection in commercial plantings of Vitis vinifera cv. Merlot exhibiting premature berry dehydration
title_full	Phytoplasma and virus detection in commercial plantings of Vitis vinifera cv. Merlot exhibiting premature berry dehydration
title_fullStr	Phytoplasma and virus detection in commercial plantings of Vitis vinifera cv. Merlot exhibiting premature berry dehydration
title_full_unstemmed	Phytoplasma and virus detection in commercial plantings of Vitis vinifera cv. Merlot exhibiting premature berry dehydration
title_sort	phytoplasma and virus detection in commercial plantings of vitis vinifera cv. merlot exhibiting premature berry dehydration
publisher	Pontificia Universidad Católica de Valparaíso
publishDate	2008
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582008000500007
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Phytoplasma and virus detection in commercial plantings of Vitis vinifera cv. Merlot exhibiting premature berry dehydration

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