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Multiple PLDs required for high salinity and water deficit tolerance in plants

Bargmann, B.O.R.(Universiteit van Amsterdam (Netherlands)) ; Laxalt, A.M ; ter Riet, B ; van Schooten, B ; Merquiol, E ; Testerink, C ; Haring, M.A ; Bartels, D ; Munnik, T

Plant and cell physiology, 2009-01, Vol.50 (1), p.78-89 [Periódico revisado por pares]

Japan: Oxford University Press

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Título:
Multiple PLDs required for high salinity and water deficit tolerance in plants
Autor: Bargmann, B.O.R.(Universiteit van Amsterdam (Netherlands)) ; Laxalt, A.M ; ter Riet, B ; van Schooten, B ; Merquiol, E ; Testerink, C ; Haring, M.A ; Bartels, D ; Munnik, T
Assuntos: Arabidopsis ; Arabidopsis - drug effects ; Arabidopsis - enzymology ; Arabidopsis - genetics ; ARABIDOPSIS THALIANA ; Cells, Cultured ; DEHYDRATION ; DESHIDRATACION ; DESHYDRATATION ; Drought ; FOSFOLIPASE ; FOSFOLIPIDOS ; Gene Knockout Techniques ; Gene Silencing ; Genes, Plant ; High salinity ; LYCOPERSICON ESCULENTUM ; Lycopersicon esculentum - drug effects ; Lycopersicon esculentum - enzymology ; Lycopersicon esculentum - genetics ; PHOSPHATIDE ; Phosphatidic acid ; PHOSPHOLIPASE ; Phospholipase D ; Phospholipase D - genetics ; Phospholipase D - metabolism ; PHOSPHOLIPASES ; PHOSPHOLIPIDS ; Plant Proteins - genetics ; Plant Proteins - metabolism ; PLANTAS TRANSGENICAS ; PLANTE TRANSGENIQUE ; Plants, Genetically Modified - drug effects ; Plants, Genetically Modified - enzymology ; Plants, Genetically Modified - genetics ; Regular Papers ; SALINIDAD ; SALINITE ; SALINITY ; Salt-Tolerant Plants - drug effects ; Salt-Tolerant Plants - enzymology ; Salt-Tolerant Plants - genetics ; Sodium Chloride - pharmacology ; TOLERANCE ; TOLERANCIA ; Tomato ; TRANSGENIC PLANTS ; Water - metabolism
É parte de: Plant and cell physiology, 2009-01, Vol.50 (1), p.78-89
Notas: F30
H50
2009003912
4Present address: Department of Biology, New York University, 100 Washington Square East, 1009 Silver Building, New York, NY 10003, USA.
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ObjectType-Article-1
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6Present address: The Netherlands Cancer Institute, Plesmalaan 121, NL-1066 CX Amsterdam, The Netherlands.
5Present address: Instituto de Investigaciones Biológicas, Facultad de Ciencas Exactas y Naturales, Universidad Nacional de Mar del Plata, CC 1245, 7600 Mar del Plata, Argentina.
Descrição: High salinity and drought have received much attention because they severely affect crop production worldwide. Analysis and comprehension of the plant's response to excessive salt and dehydration will aid in the development of stress-tolerant crop varieties. Signal transduction lies at the basis of the response to these stresses, and numerous signaling pathways have been implicated. Here, we provide further evidence for the involvement of phospholipase D (PLD) in the plant's response to high salinity and dehydration. A tomato (Lycopersicon esculentum) α-class PLD, LePLDα1, is transcriptionally up-regulated and activated in cell suspension cultures treated with salt. Gene silencing revealed that this PLD is indeed involved in the salt-induced phosphatidic acid production, but not exclusively. Genetically modified tomato plants with reduced LePLDα1 protein levels did not reveal altered salt tolerance. In Arabidopsis (Arabidopsis thaliana), both AtPLDα1 and AtPLDδ were found to be activated in response to salt stress. Moreover, pldα1 and pldδ single and double knock-out mutants exhibited enhanced sensitivity to high salinity stress in a plate assay. Furthermore, we show that both PLDs are activated upon dehydration and the knock-out mutants are hypersensitive to hyperosmotic stress, displaying strongly reduced growth.
Editor: Japan: Oxford University Press
Idioma: Inglês

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Multiple PLDs required for high salinity and water deficit tolerance in plants

Bargmann, B.O.R.(Universiteit van Amsterdam (Netherlands)) ; Laxalt, A.M ; ter Riet, B ; van Schooten, B ; Merquiol, E ; Testerink, C ; Haring, M.A ; Bartels, D ; Munnik, T

Japan: Oxford University Press

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