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The Basic Helix-Loop-Helix Transcription Factor MYC1 Is Involved in the Regulation of the Flavonoid Biosynthesis Pathway in grapevine

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Molecular Plant 2010年第3期3卷 509-523页

作者： Imene Hichri Simon C. Heppel Jeremy Pillet Celine Leon Stefan Czemmel Serge delrot Virginie lauvergeat Jochen Bogs Institut des Sciences de la vigne et du Vin UMR 1287 Ecophysiologie et G~nomique Fonctionnelle de la Vigne~lNRA Universit~ de Bordeaux 210 Chernin deLeysotte 33882 Villenave d'Ornon France Heideiberger Institut for Pflanzenwissenschaften im Neuenheimer Feld 360 69120 Heidelberg Germany

Previous results indicated that in grapevine （Vitis vinifera）, regulation of the flavonoid pathway genes by MYB transcription factors depends on their interaction with basic helix-loop-helix proteins （bHLHs）. The present study describes the first functional characterization of a bHLH factor from grapevine named VvMYC1. This transcription factor is phylogenetically related to Arabidopsis bHLH proteins, which participate in the control of flavonoid biosynthesis and epidermal cell fate. Transient promoter and yeast two-hybrid assays demonstrated that VvMYC1 physically interacts with MYB5a, MYB5b, MYBA1/A2, and MYBPA1 to induce promoters of flavonoid pathway genes involved in anthocyanin and/ or proanthocyanidin （PA） synthesis. Additionally, transient promoter assays revealed that VvMYC1 is involved in feedback regulation of its own expression. Transcript levels of VvMYC1 during berry development correlate with the synthesis of anthocyanins and PAs in skins and seeds of berries, suggesting that VvMYC1 is involved in the regulation of anthocyanins and PA synthesis in these organs. Likewise, transient expression of VvMYC1 and VvMYBA1 induces anthocyanin synthesis in grapevine suspension cells. These results suggest that VvMYCl is part of the transcriptional cascade controlling antho- cyanin and PA biosynthesis in grapevine.

关键词： Fruit ripening molecular physiology secondary metabolismmphenylpropanoids and phenolics gene regu-lation transcriptional control and transcription factors grapevine.

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Sexual audience affects male's reproduction investment without consequences on reproductive outputs

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Insect Science 2022年第4期29卷 1170-1180页

作者： Philippe Louâpre Karen Muller Soline Bettencourt-Amarante denis Thiery Jérôme Moreau UMR CNRS 6282 Biogeosciences UniversitéBourgogne Franche-ComtéDijonFrance INRA UMR 1065 Santéet Agroecologie du Vignoble Institut des Science de la Vigne et du VinVillenave d'OrnonCedexFrance INRA UMR 1065 SaveUniversitéde BordeauxBordeaux Sciences AgroVillenave d'OrnonCedexFrance

Males evolved plastic strategies to respond to male-male competition and exhibit adaptive traits and behaviors maximizing their access to the females and limiting sperm *** behaviors allow males to express quick responses to current sexual audience,that is,the number of nearby conspecifics prone to *** contrast,physiological responses are frequently delayed because they are constrained by the time and resources having to be mobilized to produce and export sperm and associated *** is especially critical in species for which males produce *** we investigated in what extend moth males(the tortricid moth Lobesia botrana)producing spermatophores exhibit plastic behavioral and physiological responses to different sexual audiences before and during mating and the consequences for their reproductive *** found that males adjusted their mating behaviors and spermatophore size to a potentially elevated risk of sperm competition perceived before *** addition,males responded to the closed presence of females during mating by reducing their mating ***,the various behavioral and physiological responses we highlighted here were not fully reflected in their reproductive performance as we did not reveal any effect on fecundity and fertility of their *** selective pressure exerted on males experiencing male-male competition could thus be sufficient to trigger adjustment in male mating behaviors but constrains physiological responses according to the perception of competition.

关键词： Lobesia borrund male-male compeition mating behavior sexual conflict sexual scletion sperm competition

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Long-distant transport of glutathione by OsgT1

Long-distant transport of glutathione by OsGT1

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第十三届全国植物基因组学大会

作者： Serge delrot Univ.Bordeaux IsvvEcophysiologie Et Genomique Fonctionnelle De La VigneUmr 1287F33140Villenave D’ornon 0France

glutathione(gSH) is an essential metabolite in protecting cells against oxidative damages under normal and stress *** could be intercellular transported and long-distant transported in the ***1 is a gSH transporter,bu...

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New insights into the heat responses of grape leaves via combined phosphoproteomic and acetylproteomic analyses

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Horticulture Research 2019年第1期6卷 489-503页

作者： guo-Tian Liu Jian-Fu Jiang Xin-Na Liu Jin-Zhu Jiang Lei Sun Wei Duan Rui-Min Li Yi Wang David Lecourieux Chong-Huai Liu Shao-Hua Li Li-Jun Wang Beijing Key laboratory of grape Science and Enology and Key laboratory of Plant Resources Institute of Botanythe Chinese Academy of SciencesBeijing 100093China Zhengzhou Fruit Research Institute Chinese Academy of Agricultural SciencesZhengzhou 450009China College of Horticulture Northwest A&F UniversityYangling 712100China Universite´de Bordeaux ISVVEcophysiologie et Ge´nomique Fonctionnelle de la VigneUMR 1287F-33140 Villenave d’OrnonFrance INRA ISVVEcophysiologie et Ge´nomique Fonctionnelle de la VigneUMR 1287F-33140 Villenave d’OrnonFrance University of Chinese Academy of Sciences Beijing 100093China

Heat stress is a serious and widespread threat to the quality and yield of many crop species,including grape(Vitis vinifera L.),which is cultivated ***,we conducted phosphoproteomic and acetylproteomic analyses of leaves of grape plants cultivated under four distinct temperature *** phosphorylation or acetylation of a total of 1011 phosphoproteins with 1828 phosphosites and 96 acetyl proteins with 148 acetyl sites changed when plants were grown at 35℃,40℃,and 45℃in comparison with the proteome profiles of plants grown at 25℃.The greatest number of changes was observed at the relatively high *** classification and enrichment analysis indicated that phosphorylation,rather than acetylation,of serine/arginine-rich splicing factors was involved in the response to high *** finding is congruent with previous observations by which alternative splicing events occurred more frequently in grapevine under high *** in acetylation patterns were more common than changes in phosphorylation patterns in photosynthesis-related proteins at high temperatures,while heat-shock proteins were associated more with modifications involving phosphorylation than with those involving *** proteins were identified with changes associated with both phosphorylation and acetylation,which is consistent with crosstalk between these posttranslational modification types.

关键词： temperature cultivated Vitis

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Spatiotemporally reconfigurable light in degenerate laser cavities

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Photonics Research 2023年第10期11卷 1751-1756页

作者： A.BARTOLO N.vigne M.MARCONI g.BEAUDOIN L.LE gRATIet K.PANTZAS I.SAgNES A.gARNACHE M.gIUDICI UniversitéCôte d’Azur CNRSInstitut de Physique de Nice06200 NiceFrance Institut d’Electronique et des Systèmes CNRS UMR521434000 MontpellierFrance Centre de Nanosciences et de Nanotechnologies CNRS UMR 9001UniversitéParis-Saclay91120 PalaiseauFrance

We show that a Ⅲ-V semiconductor vertical external-cavity surface-emitting laser(VECSEL) can be engineered to generate light with a customizable spatiotemporal structure. Temporal control is achieved through the emission of temporal localized structures(TLSs), a particular mode-locking regime that allows individual addressing of the pulses traveling back and forth in the cavity. The spatial profile control relies on a degenerate external cavity, and it is implemented due to an absorptive mask deposited onto the gain mirror that limits the positive net gain within two circular spots in the transverse section of the VECSEL. We show that each spot emits spatially uncorrelated TLSs. Hence, the spatiotemporal structure of the light emitted can be shaped by individually addressing the pulses emitted by each spot. Because the maximum number of pulses circulating in the cavity and the number of positive net-gain spots in the VECSEL can be increased straightforwardly, this result is a proof of concept of a laser platform capable of handling light states of scalable complexity. We discuss applications to three-dimensional alloptical buffers and to multiplexing of frequency combs that share the same laser cavity.

关键词： light cavity mirror

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Water limitation and rootstock genotype interact to alter grape berry metabolism through transcriptome reprogramming

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Horticulture Research 2015年第1期2卷 242-254页

作者： Mariam Berdeja Philippe Nicolas Christian Kappel Zhan Wu Dai ghislaine Hilbert Anthony Peccoux Magali lafontaine Nathalie Ollat Eric gomès Serge delrot ecophysiologie et génomique fonctionnelle de la vigne University BordeauxISVVUMR 1287Villenave d′Ornon F-33140France department of general and Organic Viticulture Hochschule Geisenheim UniversityGeisenheimGermany Boyce Thompson Institute for Plant Research IthacaNY 14850USA Institut für Biochemie und Biologie Universität PotsdamKarl-Liebknecht-Str.24–25Potsdam 14476Germany

grapevine is a perennial crop often cultivated by grafting a scion cultivar on a suitable *** influence scions,particularly with regard to water uptake and ***,one of the possibilities to adapt viticulture to the extended drought stress periods is to select rootstocks conferring increased tolerance to ***,the molecular mechanisms associated with the ability of rootstock/scion combination to influence grape berry metabolism under drought stress are still poorly *** transcriptomic changes induced by drought stress in grape berries(*** noir)from vines grafted on either 110R(drought-tolerant)or 125AA(drought-sensitive)rootstock were *** experiments were conducted in the vineyard for two years and two grape berry developmental stages(50%and 100%veraison).The genome-wide microarray approach showed that water stress strongly impacts gene expression in the berries,through ontology categories that cover cell wall metabolism,primary and secondary metabolism,signaling,stress,and hormones,and that some of these effects strongly depend on the rootstock ***,under drought stress,berries from vines grafted on 110R displayed a different transcriptional response compared to 125AA-concerning genes related to jasmonate(JA),phenylpropanoid metabolism,and pathogenesis-related *** data also suggest a link between JA and secondary metabolism in water-stressed ***,genes related to secondary metabolism and JA are more induced and/or less repressed by drought stress in the berries grafted on the drought-sensitive rootstock *** rootstock-dependent gene expression changes are relevant for berry composition and sensory properties.

关键词： metabolism drought programming

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The role of auxin during early berry development in grapevine as revealed by transcript profiling from pollination to fruit set

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Horticulture Research 2021年第1期8卷 1924-1938页

作者： Francisca godoy Nathalie Kuhn Mindy Muñoz german Marchandon Satyanarayana gouthu laurent deluc Serge delrot Virginie lauvergeat Patricio Arce-Johnson departamento de genetica Molecular y Microbiologia Facultad de Ciencias BiologicasPontificia Universidad Catolica de ChileAlameda 340SantiagoChile Facultad de Ciencias Agronomicas y de los Alimentos Pontificia Universidad Catolica de Valparaiso2340025 ValparaisoChile department of Horticulture Oregon State UniversityCorvallisOR 97331USA UMR ecophysiologie et genomique fonctionnelle de la vigne ISVVUniversitéde BordeauxVillenave d´OrnonFrance

Auxin is a key phytohormone that modulates fruit formation in many fleshy fruits through the regulation of cell division and *** content rapidly increases after pollination and the manipulation in its levels may lead to the parthenocarpic *** Vitis vinifera L.,little is known about the early fruit development that encompasses from pollination to fruit ***/fertilization events trigger fruit formation,and auxin treatment mimics their effect in grape berry ***,the role of auxin in this process at the molecular level is not well *** elucidate the participation of auxin in grapevine fruit formation,morphological,reproductive,and molecular events from anthesis to fruit set were described in sequential days after *** RNA-seq analysis at four time points from anthesis to fruit set revealed that the highest percentage of genes induced/repressed within the hormone-related gene category were auxin-related *** profiling showed significant transcript variations in auxin signaling and homeostasis-related genes during the early fruit *** acetic acid and several auxin metabolites were present during this ***,application of an inhibitor of auxin action reduced cell number and the mesocarp diameter,similarly to unpollinated berries,further confirming the key role of auxin during early berry *** work sheds light into the molecular features of the initial fruit development and highlights the auxin participation during this stage in grapevine.

关键词： development. auxin fir

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Individual Leaf Area of Early Flowering Arabidopsis genotypes Is More Affected by Drought than late Flowering Ones: A Multi-Scale Analysis in 35 genetically Modified Lines

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American Journal of Plant Sciences 2015年第7期6卷 955-971页

作者： Catherine Massonnet Myriam Dauzat Alexis Bédiée denis Vile Christine granier laboratoire d’ecophysiologie des Plantes sous Stress Environnementaux UMR 759 Institut National de la Recherche Agronomique/Ecole Nationale Supérieure d’Agronomie Place Viala Montpellier France INRA UMR Ecologie et Ecophysiologie Forestières Route d’Amance Champenoux France Université de Lorraine UMR Ecologie et Ecophysiologie Forestières Vandoeuvre France

Plants acclimate to drought optimizing the trade-off between biomass production and water loss while ensuring their survival and reproduction. Plants also modify their growth or phenology as complementary strategies in response to stress. despite evidence of an interaction between flowering time and plant growth response to environmental stresses, this interaction in response to drought is under debate. To contribute to the analysis of this interaction, leaf growth of 35 genetically modified lines of Arabidopsis thaliana and their common wild-type, Col-0 was analyzed by a quantitative multi-scale phenotyping approach from cellular to whole plant scale both in well-watered and soil moderate water deficit conditions. These genotypes were selected for the various physiological functions potentially altered by their genetic modification and that could interact with plant growth and/or their drought responses. In all genotypes, leaf expansion decreased in response to drought both at the whole rosette and the individual leaf levels. Additionally, epidermal cell area and/or epidermal cell number decreased in response to the drought treatment. In contrast, the number of rosette leaves was reduced in only half of the genotypes and leaf growth duration was only modified in 4 of them. despite long photoperiod conditions, the duration of the vegetative phase, i.e. the time elapsed between germination and flowering stage, varied from 12 to 27 days among genotypes under well watered conditions. Our analyses revealed that the differences of flowering time observed in well-watered condition impacted the leaf area response to drought. Early-flowering genotypes slightly decreased their final leaf number, but strongly reduced their individual leaf area compared with the late-flowering ones. This result underlines the difficulty to analyze plant response to environmental stresses when genotypes with different flowering dates are compared.

关键词： Arabidopsis thaliana Soil Water deficit Leaf Area Leaf Expansion Flowering Time

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Chasing the queens of the alien predator of honeybees: A water drop in the invasiveness ocean

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Open Journal of Ecology 2012年第4期2卷 183-191页

作者： Karine Monceau Olivier Bonnard denis Thiéry Institut National de la Recherche Agronomique UMR1065 Santé et Agroécologie du Vignoble Institut des Sciences de la Vigne et du Vin (ISVV) Villenave d’Ornon France Université de Bordeaux UMR1065 Santé et Agroécologie du Vignoble Bordeaux Sciences Agro Villenave d’Ornon France

The Yellow-legged hornet, Vespa velutina , was accidentally introduced in France in 2004, and then spread rapidly through the French territory but also to adjacent European countries (Spain, Portugal, and Belgium). During summer and autumn, V. velutina workers hunt domestic honeybees, Apis mellifera, for feeding their larvae. The impact of this alien species is mainly economic, beekeepers experiencing heavy colony losses, but also ecological, V. velutina hunting other pollinators. In their year-round life cycle, nest initiation by single queen during spring is the critical stage. In invaded areas, spring queen trapping using food baits has been promoted by apicultural unions in order to limit V. velutina population expansion. The goals of this work were 1) to evaluate the yield of this method, 2) to identify appropriate sites for trapping, 3) to identify potential optimal climatic windows of capture, and 4) to quantify the impact on local entomofauna. Our results showed that water proximity enhances trapping but not beehives proximity, and that trapping is inefficient if average week temperatures are below 10°C. Although the trapping effect on biodiversity should be studied more carefully, spring queen trapping is highly questionable unless specific attractants could be proposed.

关键词： Foundress Invasive Species Metareplication Vespa velutina Yellow-Legged Hornet

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Efficient Plant Regeneration from Explants of Compact Oregano (Origanum compactum Bentham)

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American Journal of Plant Sciences 2022年第10期13卷 1311-1334页

作者： Rajae Benkaddour Naouar Ben Ali Alain Badoc Ouafaa Hamdoun Ibtissam Boussaoudi latifa Azaroual Patrick Martin Ahmed lamarti laboratory of Plant Biotechnology Biology Department Faculty of Sciences Abdelmalek Essaadi University Tetouan Morocco laboratoire MIB (Molécules d’Intérêt Biologique) ISVV (Institut des Sciences de la Vigne et du Vin) Villenaved’Ornon France Water laboratory Environmental Studies and Analyzes (L2EAE) Department of Chemistry Faculty of Science Abdelmalek Essaadi University Tetouan Morocco Unité Transformations & Agroressources Université d’Artois Béthune France

Origanum compactum Benth., a species endemic to Morocco characterized by its biological activities, is overexploited because of its commercial value and threatened with extinction. Accordingly, measures for its conservation are needed. Micropropagation serves as a solution for the protection and the domestication of this species. In this investigation, we established a protocol for vegetative multiplication in vitro of Origanum compactum by the axillary bud technique. Six culture media (SH, SD, N30K, MS, MSm, B5) were tested to determine the most suitable mineral medium for growth and development of explants. Four cytokinins: Kinetin, Zeatin, BAP (6-Benzylaminopurine), 2ip (2-Isopentenyladenine) and three compounds with cytokinin activity: Adénine, 1,3-Diphenylurea (DPU) and Thidiazuron (TDZ) at five concentrations (0.44, 1.33, 2.22, 3.11, 4.44 μM) were tested on budding, growth, hyperhydria and rooting. Then three auxins, Indole-3-acetic acid (IAA), Naphthalene acetic acid (NAA) and Indole butyric acid (IBA) at four concentrations (1.14, 2.85, 4.56, 6.27 μM) in presence of 2.22 μM BAP were evaluated. The combination of gibberellic acid (0.29, 1.5, 2.60, 2.89 μM gA3) and three polyamines (Putrescine, Spermidine, Spermine) at five concentrations (1.134, 3.402, 5.67, 7.938, 11.34 μM) with cytokinins and auxins were considered. Our results show that Margara medium is the most efficient and BAP at 2.22 μM is the best cytokinin for development of the aerial parts, with a regeneration rate of 88, 90%;rhizogenesis is successful with the combination of 6.27 μM IAA and 2.22 μM BAP. Moreover, the integration of 2.89 μM gA3 with 2.22 μM BAP and 6.27 μM IAA promotes vitroplant growth, bud and shoot multiplication and elongation of the aerial part. The addition of polyamines with 2.22 μM BAP and 6.27 μM IAA does not improve the root part, but Spermine at 5.67 μM promotes bud and shoot multiplication with a high percentage of regeneration, and spermidine at

关键词： Auxins Cytokinins gibberellic Acid Macronutrients Micropropagation Polyamines Origanum compactum

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