Valérie Laucou

ORCID: 0000-0001-5311-785X
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About
Contact & Profiles
Research Areas
  • Horticultural and Viticultural Research
  • Fermentation and Sensory Analysis
  • Wine Industry and Tourism
  • Genetic Mapping and Diversity in Plants and Animals
  • Plant Physiology and Cultivation Studies
  • Wheat and Barley Genetics and Pathology
  • Plant and Fungal Interactions Research
  • Plant Pathogens and Fungal Diseases
  • Plant Reproductive Biology
  • Plant biochemistry and biosynthesis
  • Genetic and Environmental Crop Studies
  • Nuts composition and effects
  • Plant Molecular Biology Research
  • Yeasts and Rust Fungi Studies
  • Plant and animal studies
  • Forest Insect Ecology and Management
  • Botanical Studies and Applications
  • Genetic and phenotypic traits in livestock
  • Agricultural pest management studies
  • Banana Cultivation and Research
  • Plant Gene Expression Analysis
  • Legume Nitrogen Fixing Symbiosis
  • Agricultural safety and regulations
  • Soil and Land Suitability Analysis
  • Historical Studies and Socio-cultural Analysis

Genetic Improvement and Adaptation of Mediterranean and Tropical Plants
2015-2024

Agropolis International
2011-2024

Centre de Coopération Internationale en Recherche Agronomique pour le Développement
2018-2023

Université de Montpellier
2018-2023

Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement
2007-2023

Institut Agro Montpellier
2007-2023

L'Institut Agro
2020-2022

University of Udine
2012

Diversité, adaptation et développement des plantes
2007-2010

Institut de Recherche pour le Développement
2007-2010

The analysis of the first plant genomes provided unexpected evidence for genome duplication events in species that had previously been considered as true diploids on basis their genetics. These polyploidization may have important consequences evolution, particular radiation and adaptation modulation functional capacities. Here we report a high-quality draft sequence grapevine (Vitis vinifera) obtained from highly homozygous genotype. is fourth one produced so far flowering plants, second...

10.1038/nature06148 article EN cc-by-nc-sa Nature 2007-08-26

Cytokinins are hormones that regulate cell division and development. As a result of lack specific mutants biochemical tools, it has not been possible to study the consequences cytokinin deficiency. Cytokinin-deficient plants expected yield information about processes in which cytokinins limiting that, therefore, they might regulate. We have engineered transgenic Arabidopsis overexpress individually six different members oxidase/dehydrogenase (AtCKX) gene family undertaken detailed phenotypic...

10.1105/tpc.014928 article EN The Plant Cell 2003-10-10

We elucidate grapevine evolution and domestication histories with 3525 cultivated wild accessions worldwide. In the Pleistocene, harsh climate drove separation of grape ecotypes caused by continuous habitat fragmentation. Then, occurred concurrently about 11,000 years ago in Western Asia Caucasus to yield table wine grapevines. The domesticates dispersed into Europe early farmers, introgressed ancient western ecotypes, subsequently diversified along human migration trails muscat unique...

10.1126/science.add8655 article EN Science 2023-03-02

Grapevine (Vitis vinifera subsp. vinifera) is one of the most important and ancient horticultural plants in world. Domesticated about 8–10,000 years ago Eurasian region, grapevine evolved from its wild relative (V. sylvestris) into very diverse heterozygous cultivated forms. In this work we study genetic structure a large sample varieties, to interpret wide diversity at morphological molecular levels link it cultivars utilization, putative geographic origin historical events. We analyzed...

10.1186/1471-2229-13-25 article EN cc-by BMC Plant Biology 2013-01-01

Grapevine is a very important crop species that mainly cultivated worldwide for fruits, wine and juice. Identification of the genetic bases performance traits through association mapping studies requires precise knowledge available diversity how this structured varies across whole genome. An 18k SNP genotyping array was evaluated on panel Vitis vinifera cultivars we obtained data set with no missing values total 10207 SNPs 783 different genotypes. The average inter-SNP spacing ~47 kbp, mean...

10.1371/journal.pone.0192540 article EN cc-by PLoS ONE 2018-02-08

The mountainous region between the Caucasus and China is considered to be center of domestication for grapevine. Despite importance Central Asia in history grape growing, information about extent distribution genetic variation this limited comparison wild cultivated grapevines from around Mediterranean basin. principal goal work was survey diversity relationships among germplasm Caucasus, Asia, basin collectively understand gene flow, possible events adaptive introgression.A total 1378...

10.1186/s12870-018-1351-0 article EN cc-by BMC Plant Biology 2018-06-27

As for many crops, new high-quality grapevine varieties requiring less pesticide and adapted to climate change are needed. In perennial species, breeding is a long process which can be speeded up by gaining knowledge about quantitative trait loci linked agronomic traits variation. However, due the juvenile period of these establishing numerous highly recombinant populations high resolution mapping both costly time-consuming. Genome wide association studies in germplasm panels an alternative...

10.1186/s12870-016-0754-z article EN cc-by BMC Plant Biology 2016-03-22

The first high quality draft of the grape genome sequence has just been published. This is a critical step in accessing all genes this species and increases chances exploiting natural genetic diversity through association genetics. However, our basic knowledge extent allelic variation within still not sufficient. Towards goal, we constructed nested core collections (G-cores) to capture simple repeat (SSR) cultivated compartment (Vitis vinifera L. subsp. sativa) from world's largest germplasm...

10.1186/1471-2229-8-31 article EN cc-by BMC Plant Biology 2008-01-01

A parentage and a paternity-based approach were tested for estimation of pollen-mediated gene flow in wild grapevine (Vitis vinifera L. subsp. silvestris), wind-pollinated species occurring Mediterranean Europe southwestern Asia. For this purpose, 305 seedlings collected 2 years at locations France from 4 female individuals 417 prospected Italy analyzed using 20 highly polymorphic microsatellite loci. Their profiles compared with database consisting 3203 accessions the Institut National de...

10.1093/jhered/esn084 article EN Journal of Heredity 2008-10-16

Abstract Background Cultivated grapevines, Vitis vinifera subsp. sativa , evolved from their wild relative, V. sylvestris . They were domesticated in Central Asia the absence of powdery mildew fungus, Erysiphe necator which is thought to have originated North America. However, resistance has previously been discovered two Asian cultivars and Chinese species. Results A set 380 unique genotypes evaluated with data generated 34 simple sequence repeat (SSR) markers. The included 306 cultivars,...

10.1186/1471-2229-13-149 article EN cc-by BMC Plant Biology 2013-10-04

Abstract To cope with the challenges facing agriculture, speeding-up breeding programs is a worthy endeavor, especially for perennial species such as grapevine, but requires understanding genetic architecture of target traits. go beyond mapping quantitative trait loci in bi-parental crosses, we exploited diversity panel 279 Vitis vinifera L. cultivars planted 5 blocks vineyard. This was phenotyped over several years 127 traits including yield components, organic acids, aroma precursors,...

10.1093/g3journal/jkac103 article EN cc-by G3 Genes Genomes Genetics 2022-04-29

Genetic structuring and parentage analysis were performed on a very large database comprising 2786 unique multilocus genotypes [20 nuclear simple sequence repeats (nSSRs)] of Vitis vinifera L. ssp. sativa (DC.) Hegi with special focus Tuscan cultivars to reveal the history cultivar Sangiovese, most important Italy. For this cultivar, authors also analyzed clones synonyms, investigating its genetic origin intracultivar diversity. Known synonyms ‘Sangiovese’ confirmed new ones revealed outside...

10.21273/jashs.132.4.514 article EN Journal of the American Society for Horticultural Science 2007-07-01

Several types of grape varieties have been traditionally considered under the generic term <i>Malvasia,</i> often with a complementing name related to geographic origin. We examined 56 Malvasia accessions presently maintained and 14 introduced previously but no longer at Domaine de Vassal (INRA) collection. Accessions were analyzed by ampelography and/or 20 SSR (simple sequence repeat) markers, allowing us individualize 49 propose list synonyms for 37 varieties. Eight are unique collection...

10.5344/ajev.2007.58.1.124 article EN American Journal of Enology and Viticulture 2007-03-01

Mutants have proven to be a key resource for functional genomic studies in model annual plant species. In perennial species where mutants are difficult generate and screen, spontaneous somatic variants represent unique understand the genetic control of complex developmental patterns. The morphological histological characterization six Vitis vinifera L. that display four different abnormal phenotypes flower development described here. A phenotype reiterated reproductive meristems (RRM), with...

10.1093/jxb/erm269 article EN cc-by-nc Journal of Experimental Botany 2007-11-26
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