Nathalie Ollat

Nathalie Ollat
French National Institute for Agriculture, Food, and Environment (INRAE) | INRAE · Institut des Sciences de la Vigne et du Vin (ISVV)

PhD

About

263
Publications
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4,290
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Publications

Publications (263)
Article
To optimize vineyard management practices to adapt viticulture to climate change, knowledge of the regulation mechanism of metabolite accumulation under carbon source limitation and abscisic acid (ABA) application in grapes should be deepened. Here, carbon source limitations were imposed by reducing leaf area from 12 to 2 leaves per vine (at pea si...
Article
Full-text available
The production of grafted grapevine plant material is a complex process with many steps running over at least one year, from grafting to final sorting in nurseries. To reach the market in France, grafted grapevines must meet three criteria by law: resistance to a manual graft union test (or thumb test), a minimum number of three roots and a woody,...
Article
Full-text available
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...
Article
Full-text available
Grafting is an important horticultural technique used for many crop species. However, some scion/rootstock combinations are considered as incompatible due to poor graft union formation and subsequently high plant mortality. The early identification of graft incompatibility could allow the selection of non-viable plants before planting and would hav...
Conference Paper
Full-text available
Conference at the international exhibition on "vine and wine technologies" (SITEVI), presenting the main outcomes of the LACCAVE project (adaptation to climate change in the wine industry)
Article
Despite recent progress in our understanding of graft union formation, we still know little about the cellular events underlying the grafting process. This is partially due to the difficulty of reliably targeting the graft interface in electron microscopy to study its ultrastructure and three-dimensional architecture. To overcome this technological...
Article
Abstract The dagger nematode Xiphinema index has a major economic impact due to its transmission of Grapevine fanleaf virus (GFLV) to grapevines. This vector nematode, which was introduced into Western countries from the Middle East together with the domesticated grapevine, mostly reproduces by meiotic parthenogenesis, but microsatellite multilocus...
Article
Full-text available
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...
Preprint
Despite recent progress in our understanding of the graft union formation, we still know little about the cellular events underlying the grafting process. This is partially due to the difficulty of reliably targeting the graft interface in electron microscopy to study its ultrastructure and three-dimensional architecture. To overcome this technolog...
Article
Background and Aims Climate change is modifying grape berry composition and affecting wine quality and typicity. We evaluated the effects of leaf-to-fruit ratio and exogenous abscisic acid (ABA) application on the accumulation of primary and secondary metabolites in berries, in order to optimise climate change adaptation strategies. Methods and Re...
Article
Full-text available
Etant donné les spécificités locales de la viti-viniculture française, en partie liées aux conditions climatiques, le changement climatique est un défi majeur que les acteurs de cette filière doivent relever régionalement. Pour explorer les stratégies d’adaptation à cette échelle, l’article combine deux approches : i ) une description et simulation...
Article
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L'article rend compte du forum de prospective organisé en 2019 par INRAE et InterLoire pour explorer les futurs possibles des vignobles du Val de Loire face au changement climatique. 90 acteurs de la filière ont exprimé leurs perceptions des conséquences du changement climatique en 2050, opté pour un scénario d’adaptation et proposé des leviers d’a...
Article
Breeding for varieties carrying natural resistance (R) against plant-parasitic nematodes is a promising alternative to nematicide ban. In perennial crops, the long plant-nematode interaction increases the risk for R breaking and R durability is a real challenge. In grapevine, the nematode has a high economic impact by transmitting (GFLV) and, to de...
Article
Full-text available
Background: Grafting is widely used in horticulture and rootstocks are known to modify scion growth and adaptation to soil conditions. However, the role of scion genotype in regulating rootstock development and functioning has remained largely unexplored. In this study, reciprocal grafts of two grapevine genotypes were produced as well as the corr...
Article
A key determinant of plant resistance to vascular infections lies in the ability of the host to successfully compartmentalize invaders at the xylem level. Growing evidence supports that the structural properties of the vascular system impact host vulnerability towards vascular pathogens. The aim of this study was to provide further insight into the...
Article
Full-text available
Background: Muscadine (Muscadinia rotundifolia) is known as a resistance source to many pests and diseases in grapevine. The genetics of its resistance to two major grapevine pests, the phylloxera D. vitifoliae and the dagger nematode X. index, vector of the Grapevine fanleaf virus (GFLV), was investigated in a backcross progeny between the F1 res...
Article
Full-text available
Muscadine (Muscadinia rotundifolia) is known as a resistance source to many pests and diseases in grapevine. The genetics of its resistance to two major grapevine pests, the phylloxera D. vitifoliae and the dagger nematode X. index, vector of the Grapevine fanleaf virus (GFLV), was investigated in a backcross progeny between the F1 resistant hybrid...
Article
Breeding for varieties carrying natural resistance (R) against plant-parasitic nematodes is a promising alternative to nematicide ban. In perennial crops, the long plant-nematode interaction increases the risk for R breaking and R durability is a real challenge. In grapevine, the nematode Xiphinema index has a high economical impact by transmitting...
Chapter
Full-text available
The necessity to adapt to climate change is even stronger for grapevine than for other crops, because grape berry composition—a key determinant of fruit and wine quality, typicity and market value— highly depends on “terroir” (complete natural environment), on vintage (annual climate variability), and on their interactions. In the same time, there...
Preprint
Full-text available
Background: Muscadine (Muscadinia rotundifolia) is known as a resistance source to many pests and diseases in grapevine. The genetics of its resistance to two major grapevine pests, the phylloxera D. vitifoliae and the dagger nematode X. index, vector of the Grapevine fanleaf virus (GFLV) was investigated in a backcross progeny between the F1 resis...
Preprint
Muscadine ( Muscadinia rotundifolia ) is known as a resistance source to many pests and diseases in grapevine. The genetics of its resistance to two major grapevine pests, the phylloxera D. vitifoliae and the dagger nematode X. index , vector of the Grapevine fanleaf virus (GFLV) was investigated in a backcross progeny between the F1 resistant hybr...
Article
Full-text available
Background: Grapevine is a crop of major economic importance, yet little is known about the regulation of shoot development in grapevine or other perennial fruits crops. Here we combine genetic and genomic tools to identify candidate genes regulating shoot development in Vitis spp. Results: An F2 population from an interspecific cross between V....
Article
Full-text available
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...
Preprint
Full-text available
Background: Muscadine (Muscadinia rotundifolia) is known as a resistance source to many pests and diseases in grapevine. The genetics of its resistance to two major grapevine pests, the phylloxera D. vitifoliae and the dagger nematode X. index, vector of the Grapevine fanleaf virus (GFLV) was investigated in a backcross progeny between the F1 resis...
Article
Full-text available
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...
Article
Full-text available
Background: Grafting with rootstocks is essential for the culture of many perennial fruit crops and is increasing being used in the production of annual fruits and vegetables. Our previous work based on microarrays showed that transcripts encoding enzymes of both primary and secondary metabolism were differentially expressed during graft union for...
Article
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An amendment to this paper has been published and can be accessed via a link at the top of the paper
Article
Full-text available
Grape growers have always cultivated vineyards in challenging environments, adapting their practices to sometimes very difficult local conditions. Climate change, as a new player, is modifying the terroirs’ characteristics rapidly and irremediably, giving viticulturalists major new challenges to face.
Preprint
Muscadine ( Muscadinia rotundifolia ) is known as a resistance source to many pests and diseases in grapevine. The genetics of its resistance to two major grapevine pests, the phylloxera D. vitifoliae and the dagger nematode X. index , vector of the Grapevine fanleaf virus (GFLV) was investigated in a backcross progeny between the F1 resistant hybr...
Article
Full-text available
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...
Article
Full-text available
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...
Article
Full-text available
A comprehensive analysis of all the possible impacts of future climate change is crucial for strategic plans of adaptation for viticulture. Assessments of future climate are generally based on the ensemble mean of state-of-the-art climate model projections, which prefigures a gradual warming over Europe for the 21st century. However, a few models p...
Article
Foliar nutrition is one of the efective cultural practices in vineyards. In this research, the efect of iron chelate (Fe-EDDHA) and urea, each in three levels of 0, 0.5 and 1%, was evaluated with an ANOVA completely randomized block in commercial vineyard (cv “Sultana”) located in Bahareh village of Malayer city (Iran). Vines were sprayed in three...
Article
Full-text available
Aims: Climate change imposes increasingly warm and dry conditions in most winegrowing regions. Mediterranean vineyards are particularly vulnerable and have registered, in most situations, declining yields over the past years. Although a majority of Mediterranean vineyards are still dry-farmed, yields can be increased by the implementation of irriga...
Article
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Foresight studies are regularly conducted at sectoral or geographical scales, in order to help policy makers and economic actors to define their strategy of adaptation to climate change (CC).
Conference Paper
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The growth of a fleshy fruit is greatly affected by the carbon and water status of the parent plant. Here, we developed an integrated functional-structural grapevine (Vitis vinifera L.) model that can simultaneously simulate berry growth and whole-plant carbon and water status based on hourly environmental conditions. The model was tested on fruiti...
Article
Grafting has been utilized for at least the past 7000 years. However, historically grafting has been developed by growers without particular interest beyond the agronomical and ornamental effects, thus knowledge about grafting has remained largely empirical. Much of the commercial production of fruit, and increasingly vegetables, relies upon grafti...
Article
Full-text available
The growth of fleshy fruits is still poorly understood resulting from the complex integration of water and solute fluxes, cell structural properties, and the regulation of whole plant source-sink relationships. To unravel the contribution of these processes on berry growth, a biophysical grape (Vitis vinifera L.) berry growth module was developed a...