A5102883912- Plant Reproductive Biology
- Plant Molecular Biology Research
- Plant Gene Expression Analysis
- Plant Physiology and Cultivation Studies
- Horticultural and Viticultural Research
- Legume Nitrogen Fixing Symbiosis
- Plant Pathogens and Fungal Diseases
- Yeasts and Rust Fungi Studies
- Plant biochemistry and biosynthesis
- Plant and animal studies
- Powdery Mildew Fungal Diseases
- Plant nutrient uptake and metabolism
- Berry genetics and cultivation research
- Botanical Studies and Applications
- Plant tissue culture and regeneration
- Flowering Plant Growth and Cultivation
- Photosynthetic Processes and Mechanisms
- Chromosomal and Genetic Variations
- Genetic and Environmental Crop Studies
- Agronomic Practices and Intercropping Systems
- Genetic Mapping and Diversity in Plants and Animals
- Breast Cancer Treatment Studies
- Antioxidant Activity and Oxidative Stress
- Plant Pathogens and Resistance
- Breast Lesions and Carcinomas
Université d'Angers
2008-2024
Institut Agro Rennes-Angers
2014-2024
Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement
2020-2024
Institut de recherche en horticulture et semences
2013-2023
Michigan State University
2023
Michigan United
2023
L'Institut Agro
2021-2022
Centre Hospitalier Universitaire de Rennes
2000-2020
Institut National de la Recherche Agronomique
2005-2015
Centre Eugène Marquis
2009-2010
Shoot branching patterns result from the spatio-temporal regulation of axillary bud outgrowth. Numerous endogenous, developmental and environmental factors are integrated at plant levels to determine numbers growing shoots. Multiple pathways that converge common integrators most probably involved. We propose several involving not only classical hormones auxin, cytokinins strigolactones, but also other signals with a strong influence on shoot such as gibberellins, sugars or molecular actors...
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...
The model plants Arabidopsis (Arabidopsis thaliana) and rice (Oryza sativa) have provided a wealth of information about genes genetic pathways controlling the flowering process, but little is known corresponding in legumes. garden pea (Pisum sativum) has been used for several decades as system physiological genetics flowering, lack molecular prevented direct comparison with other systems. To address this problem, we searched expressed sequence tag genome databases to identify...
In Pisum sativum, the RAMOSUS genes RMS1, RMS2, and RMS5 regulate shoot branching via physiologically defined mobile signals. RMS1 is most likely a carotenoid cleavage enzyme acts with to control levels of an as yet unidentified inhibitor required for auxin inhibition branching. Our work provides molecular, genetic, physiological evidence that plays central role in shoot-to-root-to-shoot feedback system regulates pea. Indole-3-acetic acid (IAA) positively transcript level, potentially...
Genes in the TERMINAL FLOWER1 (TFL1)/CENTRORADIALIS family are important key regulatory genes involved control of flowering time and floral architecture several different plant species. To understand functions TFL1 homologs pea, we isolated three homologs, which have designated PsTFL1a, PsTFL1b, PsTFL1c. By genetic mapping sequencing mutant alleles, demonstrate that PsTFL1a corresponds to DETERMINATE (DET) gene PsTFL1c LATE FLOWERING (LF) gene. DET acts maintain indeterminacy apical meristem...
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 recent completion of the rose genome sequence is not end a process, but rather starting point that opens up whole set new and exciting activities. Next to high-quality other genomic tools have also become available for rose, including transcriptomics data, high-density single-nucleotide polymorphism array software perform linkage quantitative trait locus mapping in polyploids. Rose cultivars are highly heterogeneous diverse. This vast diversity cultivated roses can be explained through...
Abstract Background For centuries roses have been selected based on a number of traits. Little information exists the genetic and molecular basis that contributes to these traits, mainly because expressed genes for this economically important ornamental plant is scarce. Results Here, we used combination Illumina 454 sequencing technologies generate Rosa sp. transcripts using RNA from various tissues in response biotic abiotic stresses. A total 80714 transcript clusters were identified 76611...
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...
Hybridization with introduced genetic resources is commonly practiced in ornamental plant breeding to introgress desired traits. The 19th century was a golden age for rose France. objective here study the evolution of diversity over this period, which included introduction Asian genotypes into Europe. A large sample 1228 garden roses encompassing conserved cultivated during 18th and centuries genotyped 32 microsatellite primer pairs. Its structure were clarified. Wide structured 16 groups...
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...
The Biological Resource Center (BRC) ’Pome fruits and roses’ is hosted by INRAE near Angers, France. It includes collections of apple, pear, quince rose. pear are preserved in orchards on site as DNA samples. Research accessions the Rosa genus both field samples, whereas traditional primarily maintained Traditional roses different private public rose gardens main BRC’s mission to preserve these biological resources while improving optimizing its collections. also aims gather enrich data...
Achieving negative margins is essential in conservative treatment for breast cancer. The conventional method intra-operative assessment of resection gross or histological examination frozen sections. We describe and evaluate the contribution an original touch preparation cytology (IOTPC) technique (400 procedures) performed on 396 patients.IOTPC consists touching glass slides to surfaces interest after gently pressing spatially localized specimen taken according predetermined conditions....
Abstract Light and temperature are two environmental factors that deeply affect bud outgrowth. However, little is known about their impact on the burst gradient along a stem interactions with molecular mechanisms of control. We investigated this question in acrotonic rose cultivars. demonstrated darkening distal buds or exposure to cold (5 °C) prior transfer mild temperatures (20 both repress acrotony, allowing quiescent medial proximal buds. sequenced strigolactone pathway MAX ‐homologous...
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...