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  4. Beta-aminobutyric acid-induced resistance in grapevine against downy mildew: involvement of pterostilbene
 
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Beta-aminobutyric acid-induced resistance in grapevine against downy mildew: involvement of pterostilbene

Auteur(s)
Slaughter, Ana R.
Hamiduzzaman, Mollah Md.
Katia Gindro
Neuhaus, Jean-Marc 
Institut de biologie 
Mauch-Mani, Brigitte 
Institut de biologie 
Maison d'édition
Springer
Date de parution
2008
In
European Journal of Plant Pathology
Vol.
122
No
1
De la page
185
A la page
195
Mots-clés
  • Phytoalexin
  • <i>Plasmopara viticola</i>
  • Priming
  • Stilbenes
  • <i>Vitis vinifera</i>
  • Phytoalexin

  • <i>Plasmopara viticol...

  • Priming

  • Stilbenes

  • <i>Vitis vinifera</i>...

Résumé
BABA, a non-protein amino acid, was used to induce resistance in grapevine against downy mildew. BABA-induced resistance was observed in the susceptible cv. Chasselas as well as in the resistant cv. Solaris. Following BABA treatment, sporulation of <i>Plasmopara viticola</i> was strongly reduced and the accumulation of stilbenes increased with time following infection. Induction of <i>trans-piceide</i>, <i>trans-resveratrol</i> and, more importantly, of <i>trans-ɛ-</i> and <i>trans-δ-viniferin</i> and <i>trans-pterostilbene</i> was observed in BABA-primed Chasselas. On the other hand, induction of <i>trans-resveratrol</i>, <i>trans δ-viniferin</i> and <i>trans-pterostilbene</i> was observed in BABA-primed Solaris. The accumulation of stilbenes in BABA-primed Solaris was much higher than that found in BABA-primed Chasselas. Furthermore, BABA-treatment of Solaris led to a rapid increase in transcript levels of three genes involved in the phenylpropanoid pathway: phenylalanine ammonia lyase, cinnamate-4-hydroxylase and stilbene synthase. BABA-primed Chasselas showed increased transcript levels for cinnamate-4-hydroxylase and stilbene synthase. Here we show that pre-treatment of a susceptible grapevine cultivar with BABA prior to infection with <i>P. viticola</i> primed the accumulation of specific phytoalexins that are undetectable in non-BABA-primed plants. As a result, the susceptible cultivar became more resistant to downy mildew.
Identifiants
https://libra.unine.ch/handle/123456789/15221
_
10.1007/s10658-008-9285-2
Type de publication
journal article
Dossier(s) à télécharger
 main article: Slaughter_Ana_R._-_Beta-aminobutyric_acid-induced_resistance_20090629.pdf (471.75 KB)
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