Preprint Review Version 1 Preserved in Portico This version is not peer-reviewed

Use of Elicitors and Beneficial Bacteria to Induce and Prime the Stilbene Phytoalexin Response: Main Experiments and Appli-cations to Grapevine Disease Resistance

Philippe Jeandet
* ORCID logo ,
Patricia Trotel-Aziz
ORCID logo ,
Cédric Jacquard
ORCID logo ,
Christophe Clément
ORCID logo ,
Chandra Mohan
,
Iwona Morkunas
,
Haroon Khan
ORCID logo ,
Aziz Aziz
ORCID logo
Version 1 : Received: 9 August 2023 / Approved: 10 August 2023 / Online: 10 August 2023 (05:02:00 CEST)

A peer-reviewed article of this Preprint also exists.

Jeandet, P.; Trotel-Aziz, P.; Jacquard, C.; Clément, C.; Mohan, C.; Morkunas, I.; Khan, H.; Aziz, A. Use of Elicitors and Beneficial Bacteria to Induce and Prime the Stilbene Phytoalexin Response: Applications to Grapevine Disease Resistance. Agronomy 2023, 13, 2225. Jeandet, P.; Trotel-Aziz, P.; Jacquard, C.; Clément, C.; Mohan, C.; Morkunas, I.; Khan, H.; Aziz, A. Use of Elicitors and Beneficial Bacteria to Induce and Prime the Stilbene Phytoalexin Response: Applications to Grapevine Disease Resistance. Agronomy 2023, 13, 2225.

Abstract

Phytoalexins are naturally-occurring molecules with antimicrobial activity deriving from the secondary metabolism of plants, which are synthesized in response to physical agents or stresses, phytopathogenic agents (fungi, bacteria and viruses) as well as numerous chemical compounds and biological control agents. Among these, grapevine phytoalexins, which belong to the chem-ical group of stilbenes, exhibit biocidal activity against a large number and a variety of plant pathogens. An important issue in research on these compounds is to be able to stimulate their synthesis in planta and to determine whether the induction of their production can serve as a basis for protecting that plant against its pathogens. Quite a few chemical compounds, derivatives of phytohormones bio-elicitors as well as biocontrol agents have been used to induce the synthesis of stilbene phytoalexins with the aim of conferring protection to grapevine against its main dis-eases (gray mold, downy mildew, powdery mildew and esca). This article reviews the experi-ments that have been carried out in this direction during the last thirty years and shows that the observed protective effects towards pathogens are generally linked to induction and priming of the grapevine phytoalexin response, confirming the interest of using, in a more general way, stimulation of the production of phytoalexins in plants as a basis for crop protection.

Keywords

stilbenes; phytoalexins; resveratrol; elicitors; plant defenses; chemicals; biological control agents

Subject

Biology and Life Sciences, Agricultural Science and Agronomy

Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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