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Parrilla J, Medici A, Gaillard C, Verbeke J, Gibon Y, Rolin D, Laloi M, Finkelstein RR, Atanassova R. Grape ASR Regulates Glucose Transport, Metabolism and Signaling. Int J Mol Sci 2022; 23:ijms23116194. [PMID: 35682874 PMCID: PMC9181829 DOI: 10.3390/ijms23116194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 05/24/2022] [Accepted: 05/27/2022] [Indexed: 11/16/2022] Open
Abstract
To decipher the mediator role of the grape Abscisic acid, Stress, Ripening (ASR) protein, VvMSA, in the pathways of glucose signaling through the regulation of its target, the promoter of hexose transporter VvHT1, we overexpressed and repressed VvMSA in embryogenic and non-embryogenic grapevine cells. The embryogenic cells with organized cell proliferation were chosen as an appropriate model for high sensitivity to the glucose signal, due to their very low intracellular glucose content and low glycolysis flux. In contrast, the non-embryogenic cells displaying anarchic cell proliferation, supported by high glycolysis flux and a partial switch to fermentation, appeared particularly sensitive to inhibitors of glucose metabolism. By using different glucose analogs to discriminate between distinct pathways of glucose signal transduction, we revealed VvMSA positioning as a transcriptional regulator of the glucose transporter gene VvHT1 in glycolysis-dependent glucose signaling. The effects of both the overexpression and repression of VvMSA on glucose transport and metabolism via glycolysis were analyzed, and the results demonstrated its role as a mediator in the interplay of glucose metabolism, transport and signaling. The overexpression of VvMSA in the Arabidopsis mutant abi8 provided evidence for its partial functional complementation by improving glucose absorption activity.
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Affiliation(s)
- Jonathan Parrilla
- UMR CNRS 7267 Écologie et Biologie des Interactions, Équipe Sucres & Echanges Végétaux Environnement, Université de Poitiers, 3 Rue Jacques Fort, 86073 Poitiers, France; (J.P.); (A.M.); (C.G.); (J.V.); (M.L.)
| | - Anna Medici
- UMR CNRS 7267 Écologie et Biologie des Interactions, Équipe Sucres & Echanges Végétaux Environnement, Université de Poitiers, 3 Rue Jacques Fort, 86073 Poitiers, France; (J.P.); (A.M.); (C.G.); (J.V.); (M.L.)
- Institut des Sciences des Plantes de Montpellier (IPSiM), UMR CNRS/INRAE/Institut Agro/Université de Montpellier, 2 Place Pierre Viala, 34000 Montpellier, France
| | - Cécile Gaillard
- UMR CNRS 7267 Écologie et Biologie des Interactions, Équipe Sucres & Echanges Végétaux Environnement, Université de Poitiers, 3 Rue Jacques Fort, 86073 Poitiers, France; (J.P.); (A.M.); (C.G.); (J.V.); (M.L.)
| | - Jérémy Verbeke
- UMR CNRS 7267 Écologie et Biologie des Interactions, Équipe Sucres & Echanges Végétaux Environnement, Université de Poitiers, 3 Rue Jacques Fort, 86073 Poitiers, France; (J.P.); (A.M.); (C.G.); (J.V.); (M.L.)
- GReD-UMR CNRS 6293/INSERM U1103, CRBC, Faculté de Médecine, Université Clermont-Auvergne, 28 Place Henri Dunant, 63001 Clermont-Ferrand, France
| | - Yves Gibon
- UMR 1332 Biologie du Fruit et Pathologie (BFP), INRA, Université de Bordeaux, 33882 Bordeaux, France; (Y.G.); (D.R.)
| | - Dominique Rolin
- UMR 1332 Biologie du Fruit et Pathologie (BFP), INRA, Université de Bordeaux, 33882 Bordeaux, France; (Y.G.); (D.R.)
| | - Maryse Laloi
- UMR CNRS 7267 Écologie et Biologie des Interactions, Équipe Sucres & Echanges Végétaux Environnement, Université de Poitiers, 3 Rue Jacques Fort, 86073 Poitiers, France; (J.P.); (A.M.); (C.G.); (J.V.); (M.L.)
| | - Ruth R. Finkelstein
- Department of Molecular, Cellular, and Developmental Biology, University of California, Santa Barbara, CA 93106, USA;
| | - Rossitza Atanassova
- UMR CNRS 7267 Écologie et Biologie des Interactions, Équipe Sucres & Echanges Végétaux Environnement, Université de Poitiers, 3 Rue Jacques Fort, 86073 Poitiers, France; (J.P.); (A.M.); (C.G.); (J.V.); (M.L.)
- Correspondence:
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Grape ASR-Silencing Sways Nuclear Proteome, Histone Marks and Interplay of Intrinsically Disordered Proteins. Int J Mol Sci 2022; 23:ijms23031537. [PMID: 35163458 PMCID: PMC8835812 DOI: 10.3390/ijms23031537] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Revised: 01/25/2022] [Accepted: 01/26/2022] [Indexed: 01/27/2023] Open
Abstract
In order to unravel the functions of ASR (Abscisic acid, Stress, Ripening-induced) proteins in the nucleus, we created a new model of genetically transformed grape embryogenic cells by RNAi-knockdown of grape ASR (VvMSA). Nuclear proteomes of wild-type and VvMSA-RNAi grape cell lines were analyzed by quantitative isobaric tagging (iTRAQ 8-plex). The most significantly up- or down-regulated nuclear proteins were involved in epigenetic regulation, DNA replication/repair, transcription, mRNA splicing/stability/editing, rRNA processing/biogenesis, metabolism, cell division/differentiation and stress responses. The spectacular up-regulation in VvMSA-silenced cells was that of the stress response protein VvLEA D-29 (Late Embryogenesis Abundant). Both VvMSA and VvLEA D-29 genes displayed strong and contrasted responsiveness to auxin depletion, repression of VvMSA and induction of VvLEA D-29. In silico analysis of VvMSA and VvLEA D-29 proteins highlighted their intrinsically disordered nature and possible compensatory relationship. Semi-quantitative evaluation by medium-throughput immunoblotting of eighteen post-translational modifications of histones H3 and H4 in VvMSA-knockdown cells showed significant enrichment/depletion of the histone marks H3K4me1, H3K4me3, H3K9me1, H3K9me2, H3K36me2, H3K36me3 and H4K16ac. We demonstrate that grape ASR repression differentially affects members of complex nucleoprotein structures and may not only act as molecular chaperone/transcription factor, but also participates in plant responses to developmental and environmental cues through epigenetic mechanisms.
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Dal Santo S, De Paoli E, Pagliarani C, Amato A, Celii M, Boccacci P, Zenoni S, Gambino G, Perrone I. Stress responses and epigenomic instability mark the loss of somatic embryogenesis competence in grapevine. PLANT PHYSIOLOGY 2022; 188:490-508. [PMID: 34726761 PMCID: PMC8774814 DOI: 10.1093/plphys/kiab477] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Accepted: 09/17/2021] [Indexed: 06/13/2023]
Abstract
Somatic embryogenesis (SE) represents the most appropriate tool for next-generation breeding methods in woody plants such as grapevine (Vitis vinifera L.). However, in this species, the SE competence is strongly genotype-dependent and the molecular basis of this phenomenon is poorly understood. We explored the genetic and epigenetic basis of SE in grapevine by profiling the transcriptome, epigenome, and small RNAome of undifferentiated, embryogenic, and non-embryogenic callus tissues derived from two genotypes differing in competence for SE, Sangiovese and Cabernet Sauvignon. During the successful formation of embryonic callus, we observed the upregulation of epigenetic-related transcripts and short interfering RNAs in association with DNA hypermethylation at transposable elements in both varieties. Nevertheless, the switch to nonembryonic development matched the incomplete reinforcement of transposon silencing, and the evidence of such effect was more apparent in the recalcitrant Cabernet Sauvignon. Transcriptomic differences between the two genotypes were maximized already at early stage of culture where the recalcitrant variety expressed a broad panel of genes related to stress responses and secondary metabolism. Our data provide a different angle on the SE molecular dynamics that can be exploited to leverage SE as a biotechnological tool for fruit crop breeding.
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Affiliation(s)
- Silvia Dal Santo
- Department of Biotechnology, University of Verona, Verona 37134, Italy
| | - Emanuele De Paoli
- Department of Agri-Food, Environmental and Animal Sciences, University of Udine, Udine 33100, Italy
| | - Chiara Pagliarani
- Institute for Sustainable Plant Protection, National Research Council (IPSP-CNR), Torino 10135, Italy
| | - Alessandra Amato
- Department of Biotechnology, University of Verona, Verona 37134, Italy
| | - Mirko Celii
- Department of Agri-Food, Environmental and Animal Sciences, University of Udine, Udine 33100, Italy
| | - Paolo Boccacci
- Institute for Sustainable Plant Protection, National Research Council (IPSP-CNR), Torino 10135, Italy
| | - Sara Zenoni
- Department of Biotechnology, University of Verona, Verona 37134, Italy
| | - Giorgio Gambino
- Institute for Sustainable Plant Protection, National Research Council (IPSP-CNR), Torino 10135, Italy
| | - Irene Perrone
- Institute for Sustainable Plant Protection, National Research Council (IPSP-CNR), Torino 10135, Italy
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