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Fernandez, O.* ; Lemaître-Guillier, C.* ; Songy, A.* ; Robert-Siegwald, G.* ; Lebrun, M.H.* ; Schmitt-Kopplin, P. ; Larignon, P.* ; Adrian, M.* ; Fontaine, F.*

The combination of both heat and water stresses may worsen Botryosphaeria dieback symptoms in grapevine.

Plants 12:25 (2023)

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Open Access Gold as soon as Publ. Version/Full Text is submitted to ZB.

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(1) Background: Grapevine trunk diseases (GTDs) have become a global threat to vineyards worldwide. These diseases share three main common features. First, they are caused by multiple pathogenic micro-organisms. Second, these pathogens often maintain a long latent phase, which makes any research in pathology and symptomatology challenging. Third, a consensus is raising to pinpoint combined abiotic stresses as a key factor contributing to disease symptom expression. (2) Methods: We analyzed the impact of combined abiotic stresses in grapevine cuttings artificially infected by two fungi involved in Botryosphaeria dieback (one of the major GTDs), Neofusicoccum parvum and Diplodia seriata. Fungal-infected and control plants were subjected to single or combined abiotic stresses (heat stress, drought stress or both). Disease intensity was monitored thanks to the measurement of necrosis area size. (3) Results and conclusions: Overall, our results suggest that combined stresses might have a stronger impact on disease intensity upon infection by the less virulent pathogen Diplodia seriata. This conclusion is discussed through the impact on plant physiology using metabolomic and transcriptomic analyses of leaves sampled for the different conditions.

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Publication type Article: Journal article

Document type Scientific Article

Corresponding Author

Keywords Botryosphaeriaceae ; Vitis Vinifera ; Abiotic Stress ; Biotic Stress ; Metabolomic ; Transcriptomic; Gene-expression; Drought Stress; Disease Expression; Trunk Disease; Esca Proper; Metabolites; Transcript; Leaves; Accumulation; Arabidopsis

ISSN (print) / ISBN 2223-7747

e-ISSN 2223-7747

Journal Plants

Quellenangaben Volume: 12, Issue: 4, Article Number: 25

Publisher MDPI

Publishing Place Basel, Switzerland

Non-patent literature Publications

Reviewing status Peer reviewed

Institute(s) Research Unit Analytical BioGeoChemistry (BGC)