Characterization of environmental stress responses during early development of Pringlea antiscorbutica in the field at Kerguelen

•  Early development of Kerguelen cabbage (Pringlea antiscorbutica) was studied in the Kerguelen archipelago, its natural habitat, and under laboratory conditions. Polyamines, which are involved in developmental processes and responses to stress in several plant species, were used as markers of phys...

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Veröffentlicht in:The New phytologist. - 1984. - 162(2004), 3 vom: 25. Juni, Seite 705-715
1. Verfasser: Hummel, Irène (VerfasserIn)
Weitere Verfasser: Quemmerais, Frédéric, Gouesbet, Gwenola, El Amrani, Abdelhak, Frenot, Yves, Hennion, Françoise, Couée, Ivan
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2004
Zugriff auf das übergeordnete Werk:The New phytologist
Schlagworte:Journal Article Kerguelen cabbage (Pringlea antiscorbutica) climatic change drought environmental stress polyamines root salt stress seedling development
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245 1 0 |a Characterization of environmental stress responses during early development of Pringlea antiscorbutica in the field at Kerguelen 
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520 |a •  Early development of Kerguelen cabbage (Pringlea antiscorbutica) was studied in the Kerguelen archipelago, its natural habitat, and under laboratory conditions. Polyamines, which are involved in developmental processes and responses to stress in several plant species, were used as markers of physiological status of P. antiscorbutica seedlings. •  Analysis under laboratory conditions of responses to low water availability and to salinity enabled identification of major environmental constraints restricting seedling development in the subantarctic region. •  Salt stress was found to modify polyamine distribution between seedling organs, in controlled experiments and in the field, thus indicating that polyamine responses to salt stress were functional in the field at Kerguelen. By contrast, exposure to low water availability induced different polyamine responses in controlled experiments and in the field. •  The present work thus shows that, under certain conditions, polyamine concentrations can be used as a marker of specific stress responses of seedlings in the field. Discrepancies are discussed in terms of growth conditions in the laboratory and of combined stresses in natural habitats 
650 4 |a Journal Article 
650 4 |a Kerguelen cabbage (Pringlea antiscorbutica) 
650 4 |a climatic change 
650 4 |a drought 
650 4 |a environmental stress 
650 4 |a polyamines 
650 4 |a root 
650 4 |a salt stress 
650 4 |a seedling development 
700 1 |a Quemmerais, Frédéric  |e verfasserin  |4 aut 
700 1 |a Gouesbet, Gwenola  |e verfasserin  |4 aut 
700 1 |a El Amrani, Abdelhak  |e verfasserin  |4 aut 
700 1 |a Frenot, Yves  |e verfasserin  |4 aut 
700 1 |a Hennion, Françoise  |e verfasserin  |4 aut 
700 1 |a Couée, Ivan  |e verfasserin  |4 aut 
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