Original research articles

Polyamines and adventitious root formation in Vitis vinifera L.

Abstract

The effects of polyamines were examined for growth and polyamine contents in cultings, callus and primary adventitious roots of Vitis vinifera L. Variations in free, conjugated and wall-bound polyamines in cuttings were observed during rhizogenesis. The main polyamines in cuttings were conjugated polyamines while in callus and primary adventitious roots they were free polyamines. Exogenous polyamine addition did not modify the total number of roots per cutting but increased the mean size and number of long roots. Moreover, exogenous polyamines increased polyamine levels in callus and roots, particurlarly wall-bound and conjugated polyamines. The involvement of these classes of polyamines in morphogenic processes is discussed.

Authors


Laurence Geny

Affiliation : Univ. Bordeaux, ISVV, EA 4577, USC 1366 INRA, Unité de recherche OEnologie, 210, Chemin de Leysotte 33882 Villenave d'Ornon, France

laurence.geny@oenologie.u-bordeaux2.fr

R. Dalmasso

Affiliation : Laboratoire des Sciences de la Vigne, Université Bordeaux 1, avenue des Facultés, 33405 Talence, France


Michel Broquedis

Affiliation : Institut des sciences de la vigne et du vin (ISVV), Institut fédératif de recherche (IFR), Unité mixte de recherche (UMR) santé végétale, Institut national de la recherche agronomique (INRA), Centre de recherches de Bordeaux. B.P. 81, 33883 Villenave d'Ornon (France)

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