Elisa MargueritBordeaux Sciences Agro · ISVV, UMR 1287 EGFV
Elisa Marguerit
Assistant Professor in viticulture
About
61
Publications
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1,158
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Citations since 2017
Introduction
Skills and Expertise
Publications
Publications (61)
Soil microbiota plays a significant role in plant development and health and appears to be a major component of certain forms of grapevine decline. A greenhouse experiment was conducted to study the impact of the microbiological quality of the soil and grapevine rootstock genotype on the root microbial community and development of young plants. Two...
Measurement of carbon isotope discrimination in berry juice at maturity (δ13C) provides an integrated assessment of vine water status and water use efficiency (WUE) during the period of berry ripening, and when collected over multiple seasons, can provide an indication of drought stress responses. Berry juice δ13C measurements were carried out on 4...
In wine growing regions around the world, climate change has the potential to affect vine transpiration and overall vineyard water use due to related changes in daily atmospheric conditions and soil water deficits. Grapevines control their transpiration in response to such changes by regulating conductance of water through the soil-plant-atmosphere...
In response to changes in their environments, grapevines regulate transpiration using various physiological mechanisms that alter conductance of water through the soil-plant-atmosphere continuum. Expressed as bulk stomatal conductance at the canopy scale, it varies diurnally in response to changes in vapor pressure deficit and net radiation, and ov...
Soil microbiota has increasingly been shown to play an integral role in viticulture resilience. The emergence of new metagenomic and culturomic technologies has led to significant advances in the study of microbial biodiversity. In the agricultural sector, soil and plant microbiomes have been found to significantly improve resistance to environment...
Grapevine decline is a top concern in viticulture worldwide and is often associated with many biotic and abiotic factors. Grape trunk diseases and viruses are some of the most frequently identified causes of vine dieback. However, a decline is sometimes observed when no mineral deficiency or excess, or pathogenic causes can be identified. Soil enzy...
Background and aims: In most viticultural areas of the world, Vitis vinifera grapevines require grafting onto phylloxera-tolerant rootstocks of American origin. The species most commonly used in rootstock creation are Vitis berlandieri, V. riparia and V. rupestris. Rootstocks not only provide tolerance to phylloxera but also ensure the supply of wa...
Backgrounds and aims: Grapevine, Vitis vinifera, requires grafting on Phylloxera tolerant rootstocks of American origin in most viticultural areas of the world. The most commonly used species in rootstock creation are V. berlandieri, V. riparia and V. rupestris. Rootstocks not only provide tolerance to Phylloxera but assure the supply of water and...
Climate change will impose increasingly warm and dry conditions on vineyards. Wine quality and yield are strongly influenced by climatic conditions and depend on complex interactions between temperatures, water availability, plant material, and viticultural techniques. In established winegrowing regions, growers have optimized yield and quality by...
As the climate changes, genetic adaptation of crops to abiotic stresses is an increasingly important issue, especially for a perennial crops of high economic value such as grapevine. Given the numerous environments where this plant can be found, and the huge intra- and interspecific diversity, we can assume that grapevine genomes contain many aile...
Adaptation to abiotic stresses is a complex and challenging biological issue for a genetician, especially for perennial plants such as grapevine. According to Copper and Hammer (1996), adaptation is both a “status” and a “process”. The “status” characterizes a genotype with a specific combination of alleles which allows the plant to survive and per...
Key message:
QTLs were identified for traits assessed on field-grown grafted grapevines. Root number and section had the largest phenotypic variance explained. Genetic control of root and aerial traits was independent. Breeding new rootstocks for perennial crops remains challenging, mainly because of the number of desirable traits which have to be...
The influence of soil type and preparation on vine development and grape composition was investigated in a 50 ha estate located in Saint-Emilion (Bordeaux, France) and planted predominantly with Merlot. Part of the vineyard was planted down the slopes and another part of the vineyard was planted on terraces, where soils were profoundly modified thr...
In wine producing regions around the world, climate change has the potential to decrease the frequency and amount of precipitation and increase average and extreme temperatures. This will both lower soil water availability and increase evaporative demand in vineyards, thereby increasing soil water deficits and associated vine stress. Grapevines con...
L’enjeu de l’agroécologie est aujourd’hui perçu et compris par une grande majorité du monde agricole et répond à une aspiration sociétale. En viticulture, il se cristallise autour de l’utilisation des produits phytosanitaires, mais aussi de la qualité et la fertilité des sols et la biodiversité des parcelles.
Since the second half of the XIXth century, grapevine has been grown grafted worldwide to cope with Phylloxera. Consequently, the cultivated grapevine is a chimeric plant made from two genotypes which interact together. The result of this interaction must ensure a balanced functioning dedicated to fruit production in terms of quantity and quality....
p class="Abstract" style="text-align: justify;">Designing genotypes with acceptable performance under warmer or drier environments is essential for sustainable crop production in view of climate change. However, this objective is not trivial for grapevine since traits targeted for genetic improvement are complex and result from many interactions an...
p class="Abstract" style="text-align: justify;"> Aims: Water scarcity, associated with climate change, is a particular threat to the sustainability of viticulture in present areas of cultivation, usually prone to drought. Breeding grapevine for reduced water use, better water extraction and maintained production (i.e., high water use efficiency) is...
Designing genotypes with acceptable performance under warmer or drier environments is essential for sustainable crop production in view of climate change. However, this objective is not trivial for grapevine since traits targeted for genetic improvement are complex and result from many interactions and trade-off between various physiological and mo...
Aims: Water scarcity, associated with climate change, is a particular threat to the sustainability of viticulture in present areas of cultivation, usually prone to drought. Breeding grapevine for reduced water use, better water extraction and maintained production (i.e., high water use efficiency) is therefore of major interest.Methods and results:...
"Nous sentons un regain d'intérêt pour les porte-greffe"
p style="text-align: justify;">This article provides a comprehensive view on the existing knowledge related to adaptation to soil water deficit in maritime pine, a conifer species widely planted in the southwestern Europe. It synthesizes discoveries made in ecophysiology, quantitative and population genetics as well as in genomics, combining severa...
Grapes are a widely cultivated and economically important crop. Climate change is increasing the focus and investment on the development of more drought resistant varieties. However, markets often dictate specific grape varieties that can be grown and sold. Thus growers are increasingly interested in conferring particular traits of interest (e.g.,...
Abstract In order to cope with phylloxera, most grapes worldwide must be grafted on a
rootstock. Furthermore, grapevine rootstocks are an essential underground structure for the
plant to face various pests and diseases and to adapt to different types of soil. This review
focuses on the existing information about rootstock properties in relation...
Les réponses au déficit hydrique sont des caractères complexes. L'analyse de leur déterminisme génétique met en jeu des approches de génétique quantitative où la corrélation entre la variabilité du caractère étudié et le polymorphisme des marqueurs est recherchée. Il a été démontré que plusieurs régions génétiques étaient impliquées dans le détermi...
To meet the increasing demand of wood biomass worldwide in the context of climate change, developing improved forest tree
varieties for high productivity in water-limited conditions is becoming a major issue. This involves breeding for genotypes
combining high growth and moderate water loss and thus high water-use efficiency (WUE). The present work...
Les réponses au déficit hydrique sont des caractères complexes. L'analyse de leur déterminisme génétique met en jeu des approches de génétique quantitative où la corrélation entre la variabilité du caractère étudié et le polymorphisme des marqueurs est recherchée. Il a été démontré que plusieurs régions génétiques étaient impliquées dans le détermi...
The stomatal control of transpiration is one of the major strategies by which plants cope with water stress. Here, we investigated the genetic architecture of the rootstock control of scion transpiration-related traits over a period of 3 yr. The rootstocks studied were full sibs from a controlled interspecific cross (Vitis vinifera cv. Cabernet Sau...
Dans le contexte de raréfaction de la ressource en eau, il est nécessaire de prendre en compte le caractère de tolérance à la sécheresse dans les programmes d’amélioration variétale, en particulier pour les porte-greffes de vigne. L’objectif de cette thèse est d’analyser, à l’échelle de la plante entière, le déterminisme génétique des effets du por...
A genetic linkage map of grapevine was constructed using a pseudo-testcross strategy based upon 138 individuals derived from a cross of Vitis vinifera Cabernet Sauvignon x Vitis riparia Gloire de Montpellier. A total of 212 DNA markers including 199 single sequence repeats (SSRs), 11 single strand conformation polymorphisms (SSCPs) and two morpholo...
Références vigne est un ouvrage qui présente les aspects techniques de systèmes de conduite de la vigne, tout en incluant les données économiques utiles aux professionnels. L'ouvrage débute par une présentation des principales régions viticoles françaises. Localisation, climat, sols, nombre d'hectares cultivés, encépagement, modes de commercialisat...
Water is the main limiting factor for yield in viticulture and has great implications in grape quality. Studies concerning vine water deficit stress are numerous but the level of water stress is seldom rigorously controlled. The aim of this work was to define a method for applying the same gradual water stress to all the individuals of a pot experi...
Vine water status was measured on 96 plots of three vines inside a vineyard block of 0.28 ha during three years: 2003, 2004 and 2005. Three physiological indicators were implemented: stem water potential, carbon isotope discrimination measured on grape sugars at ripeness (13 C) and canopy temperature measured by high resolution remote sensing. For...
Projects
Projects (4)
Grapevine dieback can be defined as a multiannual yield loss of vine or its premature, brutal, or progressive death linked to biotic or abiotic factors, resulting in a worldwide issue. Grape trunk diseases or viruses are one of the most frequent identified causes of vine dieback. However, in some cases, a decline is observed while no disease symptoms or pathogenic causes could be identified. The microbiome at the interface with the root system (rhizobiome) interacts the physicochemical parameters of the soil and strongly influences the adaptation of the vine plant with its environment. Dead or dying vines must be replaced regularly in order to ensure the sustainability of the vineyard. Successful plant replacement is crucial to maintain yield and quality by encouraging vines with balanced root and leaf development. One aim of vitirhizobiome project is to study the impact of the choice of plant material and plant replacement practices, including the addition of microorganisms
The vine microbiome is made up of the all the live bacterial communities in interaction with the plant. At the interface with the root system, the microbiome interacts with the soil physico-chemical parameters and strongly influences the development of the vine plant, playing a strong role in its mineral and water nutrition and its adaptation to abiotic constraints. This project tests the hypothesis that the microbiome plays a role in the development of the young plant in viticultural soils characterised by different stages of vine dieback. The study of the soil-plant interface will be carried out for two rootstocks, using original and complementary approaches which include the analysis of the microbiome (diversity and functioning) and its role in plant physiology.
