GREVENSTUK, Tomás; MOING, Annick; MAUCOURT, Mickael; DEBORDE, Catherine; ROMANO, Anabela

doi:10.1007/s10534-015-9884-2

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GREVENSTUK, Tomás
Universidade do Algarve [UAlg]

MOING, Annick
Biologie du fruit et pathologie [BFP]

MAUCOURT, Mickael
Biologie du fruit et pathologie [BFP]

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Article de revue

Ce document a été publié dans

BioMetals. 2015, vol. 28, n° 6, p. 997-1007

Springer Verlag

Résumé en anglais

Little is known about how tolerant plants cope with internalized aluminium (Al). Tolerant plants are known to deploy efficient detoxification mechanisms, however it is not known to what extent the primary and secondary metabolism is affected by Al. The aim of this work was to study the metabolic repercussions of Al stress in the tolerant plant Plantago almogravensis. P. almogravensis is well adapted to acid soils where high concentrations of free Al are found and has been classified as a hyperaccumulator. In vitro reared plantlets were used for this purpose in order to control Al exposure rigorously. The metabolome of P. almogravensis plantlets as well as its metabolic response to the supply of sucrose was characterized. The supply of sucrose leads to an accumulation of amino acids and secondary metabolites and consumption of carbohydrates that result from increased metabolic activity. In Al-treated plantlets the synthesis of amino acids and secondary metabolites is transiently impaired, suggesting that P. almogravensis is able to recover from the Al treatment within the duration of the trials. In the presence of Al the consumption of carbohydrate resources is accelerated. The content of some metabolic stress markers also demonstrates that P. almogravensis is highly adapted to Al stress.< Réduire

Mots clés

Accumulation

Metabolomics

Mots clés en anglais

Aluminium tolerance

In vitro culture

Nuclear magnetic resonance