Pectic Signal Transduction in Carrot Cells : Membrane, Cytosolic and Nuclear Responses Induced by Oligogalacturonides : ENVIRONMENTAL AND STRESS RESPONSES : GENES STRUCTURE AND EXPRESSION

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概要

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• Oligogalacturonides were applied at a concentration of 0.2 mg ml^<-1> to Daucus carota cells and protoplasts. Fractions containing oligomers of degree of polymerisation 9 to 16 in the presence of 150 mM NaCl and 0.5 mM CaCl_2, and pure oligomers of degree of polymerisation 9 to 13 in the same ionic medium, triggered a cytosolic calcium mobilisation, membrane depolarisation and cytosolic acidification. These membrane and cytosolic events coincided with the accumulation of transcripts encoding phenylalanine ammonia-lyase, catalytic activitation of the enzyme and p-hydroxybenzoic acid accumulation in the cell wall of the elicited cells. The effect of a calcium ionophore, calcium channel blockers, calmodulin inhibitors, phosphatidyl inositol metabolism modulators and H^+-ATPase modulators were investigated on oligogalacturonide-induced phenylalanine ammonia-lyase enzyme and gene activation in suspension-cultured carrot cells.

• 日本植物生理学会の論文

著者

• Van Cutsem

  Laboratoire De Biotechnologie Vegetale Facultes Universitaires Notre-dame De La Paix

• Messiaen Johan

  Laboratoire De Biotechnologie Vegetale Facultes Universitaires Notre-dame De La Paix

関連論文

• Pectic Signal Transduction in Carrot Cells : Membrane, Cytosolic and Nuclear Responses Induced by Oligogalacturonides : ENVIRONMENTAL AND STRESS RESPONSES : GENES STRUCTURE AND EXPRESSION

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