A5071721675- Plant Reproductive Biology
- Plant Gene Expression Analysis
- Plant Molecular Biology Research
- Plant biochemistry and biosynthesis
- Horticultural and Viticultural Research
- Plant nutrient uptake and metabolism
- Plant and animal studies
- Plant Physiology and Cultivation Studies
- Photosynthetic Processes and Mechanisms
- Flowering Plant Growth and Cultivation
- Potato Plant Research
- Berry genetics and cultivation research
- Powdery Mildew Fungal Diseases
- Antioxidant Activity and Oxidative Stress
- Plant Pathogens and Fungal Diseases
- Plant tissue culture and regeneration
- Legume Nitrogen Fixing Symbiosis
- Genetic diversity and population structure
- Gene expression and cancer classification
- Rice Cultivation and Yield Improvement
- Plant Disease Resistance and Genetics
- Plant Pathogens and Resistance
- Plant Micronutrient Interactions and Effects
- Metabolism, Diabetes, and Cancer
- Plant Stress Responses and Tolerance
Université d'Angers
2012-2024
Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement
2020-2024
Institut Agro Rennes-Angers
2011-2023
Institut de recherche en horticulture et semences
2010-2023
Michigan United
2023
Michigan State University
2023
Université de Poitiers
2010
Centre National de la Recherche Scientifique
2007-2010
Institut National de la Recherche Agronomique
2010
Ministère des Transports
2006-2007
Rose is the world's most important ornamental plant, with economic, cultural and symbolic value. Roses are cultivated worldwide sold as garden roses, cut flowers potted plants. outbred can have various ploidy levels. Our objectives were to develop a high-quality reference genome sequence for genus Rosa by sequencing doubled haploid, combining long short reads, anchoring high-density genetic map, study structure basis of major traits. We produced haploid rose line ('HapOB') from chinensis...
Summary Flowering is a key event in plant life, and finely tuned by environmental endogenous signals to adapt different environments. In horticulture, continuous flowering (CF) popular trait introduced wide range of cultivated varieties. It played an essential role the tremendous success modern roses woodland strawberries gardens. CF genotypes flower during all favourable seasons, whereas once‐flowering (OF) only spring. Here we show that rose strawberry controlled orthologous genes TERMINAL...
The scent of roses (Rosa x hybrida) is composed hundreds volatile molecules. Monoterpenes represent up to 70% percent the content in some cultivars, such as Papa Meilland rose. Monoterpene biosynthesis plants relies on plastid-localized terpene synthases. Combining transcriptomic and genetic approaches, we show that Nudix hydrolase RhNUDX1, localized cytoplasm, part a pathway for free monoterpene alcohols contribute fragrance roses. RhNUDX1 protein shows geranyl diphosphate...
Abstract Background In higher plants, sugars are not only nutrients but also important signal molecules. They distributed through the plant via sugar transporters, which involved in long-distance transport loading and unloading of conducting complex, allocation into source sink cells. The availability recently released grapevine genome sequence offers opportunity to identify sucrose monosaccharide transporter gene families a woody species compare them with those herbaceous Arabidopsis...
Summary FT / TFL 1 family members have been known to be involved in the development and flowering plants. In rose, R o KSN , a homologue, is key regulator of flowering, whose absence causes continuous flowering. Our objectives are functionally validate explore its mode action rose. We complemented A rabidopsis tfl1 mutants ectopically expressed continuous‐flowering (CF) Using different protein interaction techniques, we studied interactions with FD possible competition. Arabidopsis mutant by...
The role of gibberellins (GAs) during floral induction has been widely studied in the annual plant Arabidopsis thaliana. Less is known about this control perennials. It thought that GA a major regulator flowering rose. In spring, low content may be necessary for initiation. inhibited once-flowering roses, whereas did not block blooming continuous-flowering roses. Recently, RoKSN, homologue TFL1, was shown to continuous flowering. loss RoKSN function led behaviour. objective study understand...
Nudix hydrolases are conserved enzymes ubiquitously present in all kingdoms of life. Recent research revealed that several involved terpenoid metabolism plants. In modern roses, RhNUDX1 is responsible for formation geraniol, a major compound rose scent. Nevertheless, this produced by monoterpene synthases many geraniol-producing As consequence, raised the question about origin function and NUDX1 gene evolution Rosaceae, wild roses or/and during domestication process. Here, we showed three...
Cultivated for centuries, the varieties of rose have been selected based on a number flower traits. Understanding genetic and molecular basis that contributes to these traits will impact future improvements this economically important ornamental plant. In study, we used scanning electron microscopy sections meristems flowers establish precise morphological calendar from early development stages senescing flowers. Global gene expression was investigated floral meristem initiation up...
A second mannitol transporter, AgMaT2, was identified in celery (Apium graveolens L. var. dulce), a species that synthesizes and transports mannitol. This transporter successfully expressed two different heterologous expression systems: baker's yeast (Saccharomyces cerevisiae) cells tobacco (Nicotiana tabacum) plants (a non-mannitol-producing species). Data indicated AgMaT2 works as an H+/mannitol cotransporter with weak selectivity toward other polyol molecules. When tobacco, decreased the...
Floral scent is one of the most important characters in horticultural plants. Roses (Rosa spp.) have been cultivated for their since antiquity. However, probably by selecting cultivars with long vase life, breeders lost fragrant character many modern roses, especially ones bred cut flower market. The genetic inheritance has remained elusive so far. In-depth knowledge this quantitative trait thus very much needed to breed more commercial cultivars. Furthermore, rose hybrids harbor a composite...
Abstract Blooming seasonality is an important trait in ornamental plants and was selected by humans. Wild roses flower only spring whereas most cultivated modern can continuously. This explained a mutation of floral repressor gene, RoKSN , TFL1 homologue. In this work, we studied the origin, diversity selection gene. We analyzed 270 accessions, including wild old Asian European as well roses. By sequencing proposed that allele responsible for continuous-flowering, copia originated from...
Roses use a non-canonical pathway involving Nudix hydrolase, RhNUDX1, to synthesize their monoterpenes, especially geraniol. Here we report the characterization of another expressed NUDX1 gene from rose cultivar Rosa x wichurana, RwNUDX1-2. In order study function RwNUDX1-2 protein, analyzed volatile profiles an F1 progeny generated by crossing R. chinensis cv. 'Old Blush' with wichurana. A correlation test volatilomes expression data revealed that is involved in biosynthesis group...
The shoot branching pattern is a determining phenotypic trait throughout plant development. During branching, BRANCHED1 (BRC1) plays master regulator role in bud outgrowth, and its transcript levels are regulated by various exogenous endogenous factors. RhBRC1 (the homologous gene of BRC1 Rosa hybrida) main whose posttranscriptional regulation response to sugar was investigated through 3′UTR. Transformed calluses containing construction composed the CaMV35S promoter, green fluorescent...
Summary Roses hold significant symbolic value in Western cultural heritage, often serving as a symbol of love and romance. Despite their ancient cultivation, the appreciation for phenotypic diversity roses emerged relatively recently, notably during 19th century. This period is characterized by remarkable expansion number varieties, from around 100 to over 8,000, representing golden age roses. To trace history rose breeding Europe unveil genetic changes this period, we gathered data 204...
The rose is the queen of flowers and widely used as a garden plant for cut flower market. Roses are also production essential oil cosmetic perfume industries. A lot botanical roses scented use their volatiles to attract pollinators. Fragrances in very diverse scent has always been an important character selection process. Breeders have recently tried introduce new fragrances, instance reminiscent fruit or spice odors. But despite efforts, some on market not fragrant, especially ones selected...
ABSTRACT Rose is the world’s most important ornamental plant with economic, cultural and symbolic value. Roses are cultivated worldwide sold as garden roses, cut flowers potted plants. has a complex genome high heterozygosity various ploidy levels. Our objectives were ( i ) to develop first high-quality reference sequence for genus Rosa by sequencing doubled haploid, combining long short read sequencing, anchoring high-density genetic map ii study structure basis of major traits. We produced...