Possible relationship between aggressiveness of two <em>Eutypa lata</em> isolates and their polyamines and abscisic acid content

Tayeb Koussa; Michel Broquedis; Bernadette Dubos

doi:10.20870/oeno-one.1997.31.3.1082

Original research articles

Tayeb Koussa, Michel Broquedis, Bernadette Dubos

Vol. 31 No. 3 (1997): Journal international des sciences de la vigne et du vin

Received : 15 September 1997; Accepted : 25 September 1997; Published : 30 September 1997

DOI: https://doi.org/10.20870/oeno-one.1997.31.3.1082

Abstract

By HPLC analysis, we showed that myceliums of two Eutypa lata isolates cultivated in Enikson and Petersson medium culture synthesized polyamines (Putrescine, Spermidine and Spermine) and abscisic acid (ABA).

ln this medium, myceliums of high virulent isolate (BXI-IO) produced fewer polyamines than less virulent isolate (BX 1-5) while inverse phenomenon was observed for ABA content. The two growth regulators were diffused in medium culture in which their levels increase with age of mycelium. In the end, variations of PA and ABA in myceliums show antagonist effect of the two growth regulators in Eutypa lata fungi.

Authors

Tayeb Koussa

koussatayeb@hotmail.com

Affiliation : Laboratoire de biologie et biotechnologie végétales, Faculté des sciences, Université Chouaib Doukkali, 24000 El Jadida, Maroc

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

Bernadette Dubos

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