Embedded Files
The focus of our research group are:
1. Grapevine physiopathology: we are studying the interactions between the environment, plant physiology, disease development and the hydraulic functioning of declining vines.
2. Grapevine cultivar susceptibility to different biotic and abiotic stresses
3. Epidemiological monitoring of vine decline (esca dieback and mortality) to study the role of climate in grapevine decline
This research program is supported by several grants in particular:
The GPR Bordeaux Plant Science (2022-2025), WP PROMISE aims to study plant responses to multistress and trade-offs between tolerance and productivity. In the context of climate change, plant mortality and yield losses are increasing worldwide in both natural and agroecosystems. However, our understanding of the underlying causes is limited by the complex interactions between abiotic and biotic factors. The aim of the research is to study plant-drought-fungus interactions in two economically important crops (wheat and grapevine) focusing on the physiological response to stress of plant and fungi (grapevine trunk disease and fusarium head blight) using ecophysiological and omic approaches (transcriptomic, metabolomic).
The XYLOSAFE and VITADAPT projects (2022-2025) aims to identify the physiological and genetic determinants responsible for the variability in grapevine trunk disease susceptibility.
The CLIMESCA project (2022-2024) aims to explore the role of climate in vine decline and in the re-emergence of trunk diseases and to predict and anticipate the risk of decline in different terroirs.
The ESCAPADE and VITIPIN projects (2021-2024) aim to explore two scientific quests: (i) a quantitative survey of the grapevine’s decline at national and international scale and (ii) the understanding of the physiological mechanisms underlying esca leaf symptom development. This project will use an interdisciplinary and integrative approach.
The PHYSIOPATH project (2017-2021) aimed at identifying the underlying mechanisms of grapevine decline by an integrative approach focusing on biotic interactions, plant physiology and climate change. More specifically, we answered fundamental questions regarding the structure and hydraulic functions of xylem vessels and their roles in grapevine vulnerability to both vascular diseases and drought stress. The physiological responses of grapevine to both abiotic and biotic constraints has been explored and we studied the physiological thresholds leading to grapevine decline under field conditions. This was a collaborative project involving both plant pathologists and plant physiologists of INRAE.
The VIVALDI project (2014-2018) aimed at studying the global response of vineyard agrosystems (vulnerability and resilience) to biotic and abiotic stresses in the context of climate change.
Research networks:
Since 2020, we are participating in the SOERE TEMPO network, especially to develop an observatory of plant pathogen phenology.
Since 2019, we are participating in the LACCAVE 2.21 project, a national research network in which we study the impact of climate change on the grapevine biotic environment.
PNDV: plan national de lutte contre le dépérissement du vignoble (FranceAgrimer, CASDAR, CNIV).
Related publications:
Dell'Acqua et al. (2023) Grapevine resilience mechanisms to esca: investigating stem radial growth, xylem development, and physiological adaptations. https://doi.org/10.1093/aob/mcad188
Torres-Ruiz et al. (2023) Plant hydraulics at the heart of plant, crops and ecosystem functions in the face of climate change. https://doi.org/10.1111/nph.19463 #OPEN ACCESS
Lamarque et al. (2023) Quantifying the grapevine xylem embolism resistance spectrum to identify varieties and regions at risk in a future dry climate. https://doi.org/10.1038/s41598-023-34224-6
Bortolami et al. (2023) One or the other: under drought, grapevines do not express esca leaf symptoms. https://doi.org/10.20870/IVES-TR.2023.7502
Bortolami et al. (2023) Esca grapevine disease involves leaf hydraulic failure and represents a unique premature senescence process. Link
Vacher et al. (2022) Fungal metabarcoding data from two grapevine varieties (Regent and Vitis vinifera L. cv. Cabernet-Sauvignon) inoculated with powdery mildew (Erysiphe necator) under various drought conditions. Link
Bortolami & Delmas (2022) Impacts de l’esca sur le transport de l’eau de la vigne. Revue des Œnologues, 182, 21-23.
Bortolami et al. (2021) Grapevines under drought do not express esca leaf symptoms. Link
Bortolami et al. (2021) Seasonal and long-term consequences of esca grapevine disease on stem xylem integrity. Link
Pouzoulet et al. (2020) Behind the Curtain of the Compartmentalization Process: Exploring How Xylem Vessel Diameter Impacts Vascular Pathogen Resistance. Link
Bortolami et al. (2019) Exploring the hydraulic failure hypothesis of esca leaf symptom formation. Link
Charrier et al. (2018) Drought will not leave your glass empty: Low risk of hydraulic failure revealed by long-term drought observations in world’s top wine regions. Link
Delmas C. (2017) Un projet transdisciplinaire pour comprendre les mécanismes sous-jacents au dépérissement de la vigne: PHYSIOPATH. Revue des Œnologues (165HS 16-17).
Charrier et al. (2016) Evidence for hydraulic vulnerability segmentation and lack of xylem refilling under tension. Link, PDF
News about the different projects (in french):
The VIVALDI movie (INRA-Bordeaux - in french):
Projet Vivaldi - Le niveau de sécheresse modifie-t-il les épidémies d’oïdium de la vigne ?
My research is currently financed by:
Google Sites
Report abuse