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Image analysis methods for assessment of H2O2 production and <em>Plasmopara viticola</em> development in grapevine leaves : Application to the evaluation of resistance to downy mildew

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HAL Id: hal-02738757

https://hal.inrae.fr/hal-02738757

Submitted on 2 Jun 2020

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Image analysis methods for assessment of H2O2 production and Plasmopara viticola development in

grapevine leaves : Application to the evaluation of resistance to downy mildew

Ian Li Kim Khiook, Charles Schneider, Marie-Claire Héloir, Benjamin Bois, Xavier Daire, Marielle Adrian, Sophie Trouvelot

To cite this version:

Ian Li Kim Khiook, Charles Schneider, Marie-Claire Héloir, Benjamin Bois, Xavier Daire, et al..

Image analysis methods for assessment of H2O2 production and Plasmopara viticola development in grapevine leaves : Application to the evaluation of resistance to downy mildew. 16. International Congress on Molecular Plant-Microbe Interactions (XVI IS-MPMI), Jul 2014, Rhodes, Greece. 2014.

�hal-02738757�

(2)

P195

IMAGE ANALYSIS METHODS FOR ASSESSMENT OF H

2

O

2

PRODUCTION AND PLASMOPARA VITICOLA DEVELOPMENT IN GRAPEVINE LEAVES: APPLICATION TO THE EVALUATION OF RESISTANCE TO DOWNY MILDEW

Ian Li Kim Khiook

1

, Charles Schneider

1

, Marie-Claire Heloir

1

, Benjamin Bois

2

, Xavier Daire

1

, Marielle Adrian

1

, Sophie Trouvelot

1

1

Université de Bourgogne, UMR AgroSup/INRA/uB 1347 Agroécologie, ERL CNRS 6300, BP 86510, 21000 Dijon, France,

2

Institut Universitaire de la Vigne et du Vin — CRC, UMR 6282 Biogéosciences CNRS/Université de Bourgogne-6, Boulevard Gabriel, 21000 Dijon, France

The grapevine downy mildew (Plasmopara viticola) provokes severe damages and destroys the

harvest in the absence of an effective protection. Numerous fungicide treatments are thus generally

necessary. To promote a sustainable production, alternative strategies of protection including new

antifungal molecules, resistant genotypes or elicitor-induced resistance are under trial. To evaluate the

relevance of these strategies, resistance tests are required. In this context, three image analysis

methods were developed to read the results of tests performed to assess P. viticola sporulation and

mycelial development, and H

2

O

2

production in leaves. They have been validated using elicitors of

plant defenses. These methods are reliable, innovative, rapid, and their modular concept allows their

further adaptation to other host–pathogen systems.

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