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Porcher A, Guérin V, Montrichard F, Lebrec A, Lothier J, Vian A. Ascorbate glutathione-dependent H2O2 scavenging is an important process in axillary bud outgrowth in rosebush. ANNALS OF BOTANY 2020; 126:1049-1062. [PMID: 32639526 PMCID: PMC7596375 DOI: 10.1093/aob/mcaa130] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Accepted: 07/04/2020] [Indexed: 05/06/2023]
Abstract
BACKGROUND AND AIMS Branching is an important mechanism of plant shape establishment and the direct consequence of axillary bud outgrowth. Recently, hydrogen peroxide (H2O2) metabolism, known to be involved in plant growth and development, has been proposed to contribute to axillary bud outgrowth. However, the involvement of H2O2 in this process remains unclear. METHODS We analysed the content of H2O2 during bud outgrowth and characterized its catabolism, both at the transcriptional level and in terms of its enzymatic activities, using RT-qPCR and spectrophotometric methods, respectively. In addition, we used in vitro culture to characterize the effects of H2O2 application and the reduced glutathione (GSH) synthesis inhibitor l-buthionine sulfoximine (BSO) on bud outgrowth in relation to known molecular markers involved in this process. KEY RESULTS Quiescent buds displayed a high content of H2O2 that declined when bud outgrowth was initiated, as the consequence of an increase in the scavenging activity that is associated with glutathione pathways (ascorbate-glutathione cycle and glutathione biosynthesis); catalase did not appear to be implicated. Modification of bud redox state after the application of H2O2 or BSO prevented axillary bud outgrowth by repressing organogenesis and newly formed axis elongation. Hydrogen peroxide also repressed bud outgrowth-associated marker gene expression. CONCLUSIONS These results show that high levels of H2O2 in buds that are in a quiescent state prevents bud outgrowth. Induction of ascorbate-glutathione pathway scavenging activities results in a strong decrease in H2O2 content in buds, which finally allows bud outgrowth.
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Affiliation(s)
- Alexis Porcher
- Université d’Angers, Agrocampus Ouest, INRAE, UMR IRHS, SFR QuaSaV, Beaucouzé, France
| | - Vincent Guérin
- Université d’Angers, Agrocampus Ouest, INRAE, UMR IRHS, SFR QuaSaV, Beaucouzé, France
| | - Françoise Montrichard
- Université d’Angers, Agrocampus Ouest, INRAE, UMR IRHS, SFR QuaSaV, Beaucouzé, France
| | - Anita Lebrec
- Université d’Angers, Agrocampus Ouest, INRAE, UMR IRHS, SFR QuaSaV, Beaucouzé, France
| | - Jérémy Lothier
- Université d’Angers, Agrocampus Ouest, INRAE, UMR IRHS, SFR QuaSaV, Beaucouzé, France
| | - Alain Vian
- Université d’Angers, Agrocampus Ouest, INRAE, UMR IRHS, SFR QuaSaV, Beaucouzé, France
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Li J, Hu X, Huang X, Huo H, Li J, Zhang D, Li P, Ouyang K, Chen X. Functional identification of an EXPA gene ( NcEXPA8) isolated from the tree Neolamarckia cadamba. BIOTECHNOL BIOTEC EQ 2017. [DOI: 10.1080/13102818.2017.1362960] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
Affiliation(s)
- Juncheng Li
- Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, South China Agricultural University, Guangzhou, Guangdong, P.R. China
- State Key Laboratory For Conservation and Utilization of Subtropical Agro-bioresources, South China Agricultural University, Guangzhou, Guangdong, P.R. China
- Guangdong Province Research Center of Woody Forage Engineering Technology, South China Agricultural University, Guangzhou, Guangdong, P.R. China
- College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, Guangdong, P.R. China
| | - XinSheng Hu
- Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, South China Agricultural University, Guangzhou, Guangdong, P.R. China
- State Key Laboratory For Conservation and Utilization of Subtropical Agro-bioresources, South China Agricultural University, Guangzhou, Guangdong, P.R. China
- Guangdong Province Research Center of Woody Forage Engineering Technology, South China Agricultural University, Guangzhou, Guangdong, P.R. China
- College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, Guangdong, P.R. China
| | - Xiaoling Huang
- Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, South China Agricultural University, Guangzhou, Guangdong, P.R. China
- State Key Laboratory For Conservation and Utilization of Subtropical Agro-bioresources, South China Agricultural University, Guangzhou, Guangdong, P.R. China
- Guangdong Province Research Center of Woody Forage Engineering Technology, South China Agricultural University, Guangzhou, Guangdong, P.R. China
- College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, Guangdong, P.R. China
| | - Heqiang Huo
- Mid-Florida Research and Education Center, Institute of Food and Agricultural Sciences, University of Florida, Apopka, FL, USA
| | - Jingjian Li
- Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, South China Agricultural University, Guangzhou, Guangdong, P.R. China
- State Key Laboratory For Conservation and Utilization of Subtropical Agro-bioresources, South China Agricultural University, Guangzhou, Guangdong, P.R. China
- Guangdong Province Research Center of Woody Forage Engineering Technology, South China Agricultural University, Guangzhou, Guangdong, P.R. China
- College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, Guangdong, P.R. China
| | - Deng Zhang
- Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, South China Agricultural University, Guangzhou, Guangdong, P.R. China
- State Key Laboratory For Conservation and Utilization of Subtropical Agro-bioresources, South China Agricultural University, Guangzhou, Guangdong, P.R. China
- Guangdong Province Research Center of Woody Forage Engineering Technology, South China Agricultural University, Guangzhou, Guangdong, P.R. China
- College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, Guangdong, P.R. China
| | - Pei Li
- Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, South China Agricultural University, Guangzhou, Guangdong, P.R. China
- State Key Laboratory For Conservation and Utilization of Subtropical Agro-bioresources, South China Agricultural University, Guangzhou, Guangdong, P.R. China
- Guangdong Province Research Center of Woody Forage Engineering Technology, South China Agricultural University, Guangzhou, Guangdong, P.R. China
- College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, Guangdong, P.R. China
| | - Kunxi Ouyang
- Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, South China Agricultural University, Guangzhou, Guangdong, P.R. China
- State Key Laboratory For Conservation and Utilization of Subtropical Agro-bioresources, South China Agricultural University, Guangzhou, Guangdong, P.R. China
- Guangdong Province Research Center of Woody Forage Engineering Technology, South China Agricultural University, Guangzhou, Guangdong, P.R. China
- College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, Guangdong, P.R. China
| | - Xiaoyang Chen
- Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, South China Agricultural University, Guangzhou, Guangdong, P.R. China
- State Key Laboratory For Conservation and Utilization of Subtropical Agro-bioresources, South China Agricultural University, Guangzhou, Guangdong, P.R. China
- Guangdong Province Research Center of Woody Forage Engineering Technology, South China Agricultural University, Guangzhou, Guangdong, P.R. China
- College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, Guangdong, P.R. China
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Roman H, Girault T, Barbier F, Péron T, Brouard N, Pěnčík A, Novák O, Vian A, Sakr S, Lothier J, Le Gourrierec J, Leduc N. Cytokinins Are Initial Targets of Light in the Control of Bud Outgrowth. PLANT PHYSIOLOGY 2016; 172:489-509. [PMID: 27462085 PMCID: PMC5074613 DOI: 10.1104/pp.16.00530] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2016] [Accepted: 07/24/2016] [Indexed: 05/18/2023]
Abstract
Bud outgrowth is controlled by environmental and endogenous factors. Through the use of the photosynthesis inhibitor norflurazon and of masking experiments, evidence is given here that light acts mainly as a morphogenic signal in the triggering of bud outgrowth and that initial steps in the light signaling pathway involve cytokinins (CKs). Indeed, in rose (Rosa hybrida), inhibition of bud outgrowth by darkness is suppressed solely by the application of CKs. In contrast, application of sugars has a limited effect. Exposure of plants to white light (WL) induces a rapid (after 3-6 h of WL exposure) up-regulation of CK synthesis (RhIPT3 and RhIPT5), of CK activation (RhLOG8), and of CK putative transporter RhPUP5 genes and to the repression of the CK degradation RhCKX1 gene in the node. This leads to the accumulation of CKs in the node within 6 h and in the bud at 24 h and to the triggering of bud outgrowth. Molecular analysis of genes involved in major mechanisms of bud outgrowth (strigolactone signaling [RwMAX2], metabolism and transport of auxin [RhPIN1, RhYUC1, and RhTAR1], regulation of sugar sink strength [RhVI, RhSUSY, RhSUC2, and RhSWEET10], and cell division and expansion [RhEXP and RhPCNA]) reveal that, when supplied in darkness, CKs up-regulate their expression as rapidly and as intensely as WL Additionally, up-regulation of CKs by WL promotes xylem flux toward the bud, as evidenced by Methylene Blue accumulation in the bud after CK treatment in the dark. Altogether, these results suggest that CKs are initial components of the light signaling pathway that controls the initiation of bud outgrowth.
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Affiliation(s)
- Hanaé Roman
- IRHS (Research Institute on Horticulture and Seeds), Université d'Angers, Agrocampus-Ouest, Institut National de la Recherche Agronomique, SFR 4207 QUASAV, 49070 Beaucouzé, France (H.R., T.G., F.B., T.P., N.B., A.V., S.S., J.L., J.L.G., N.L.); andLaboratory of Growth Regulators and Department of Chemical Biology and Genetics, Palacký University and Institute of Experimental Botany, Academy of Sciences of the Czech Republic, CZ-78371 Olomouc, Czech Republic (A.P., O.N.)
| | - Tiffanie Girault
- IRHS (Research Institute on Horticulture and Seeds), Université d'Angers, Agrocampus-Ouest, Institut National de la Recherche Agronomique, SFR 4207 QUASAV, 49070 Beaucouzé, France (H.R., T.G., F.B., T.P., N.B., A.V., S.S., J.L., J.L.G., N.L.); andLaboratory of Growth Regulators and Department of Chemical Biology and Genetics, Palacký University and Institute of Experimental Botany, Academy of Sciences of the Czech Republic, CZ-78371 Olomouc, Czech Republic (A.P., O.N.)
| | - François Barbier
- IRHS (Research Institute on Horticulture and Seeds), Université d'Angers, Agrocampus-Ouest, Institut National de la Recherche Agronomique, SFR 4207 QUASAV, 49070 Beaucouzé, France (H.R., T.G., F.B., T.P., N.B., A.V., S.S., J.L., J.L.G., N.L.); andLaboratory of Growth Regulators and Department of Chemical Biology and Genetics, Palacký University and Institute of Experimental Botany, Academy of Sciences of the Czech Republic, CZ-78371 Olomouc, Czech Republic (A.P., O.N.)
| | - Thomas Péron
- IRHS (Research Institute on Horticulture and Seeds), Université d'Angers, Agrocampus-Ouest, Institut National de la Recherche Agronomique, SFR 4207 QUASAV, 49070 Beaucouzé, France (H.R., T.G., F.B., T.P., N.B., A.V., S.S., J.L., J.L.G., N.L.); andLaboratory of Growth Regulators and Department of Chemical Biology and Genetics, Palacký University and Institute of Experimental Botany, Academy of Sciences of the Czech Republic, CZ-78371 Olomouc, Czech Republic (A.P., O.N.)
| | - Nathalie Brouard
- IRHS (Research Institute on Horticulture and Seeds), Université d'Angers, Agrocampus-Ouest, Institut National de la Recherche Agronomique, SFR 4207 QUASAV, 49070 Beaucouzé, France (H.R., T.G., F.B., T.P., N.B., A.V., S.S., J.L., J.L.G., N.L.); andLaboratory of Growth Regulators and Department of Chemical Biology and Genetics, Palacký University and Institute of Experimental Botany, Academy of Sciences of the Czech Republic, CZ-78371 Olomouc, Czech Republic (A.P., O.N.)
| | - Aleš Pěnčík
- IRHS (Research Institute on Horticulture and Seeds), Université d'Angers, Agrocampus-Ouest, Institut National de la Recherche Agronomique, SFR 4207 QUASAV, 49070 Beaucouzé, France (H.R., T.G., F.B., T.P., N.B., A.V., S.S., J.L., J.L.G., N.L.); andLaboratory of Growth Regulators and Department of Chemical Biology and Genetics, Palacký University and Institute of Experimental Botany, Academy of Sciences of the Czech Republic, CZ-78371 Olomouc, Czech Republic (A.P., O.N.)
| | - Ondřej Novák
- IRHS (Research Institute on Horticulture and Seeds), Université d'Angers, Agrocampus-Ouest, Institut National de la Recherche Agronomique, SFR 4207 QUASAV, 49070 Beaucouzé, France (H.R., T.G., F.B., T.P., N.B., A.V., S.S., J.L., J.L.G., N.L.); andLaboratory of Growth Regulators and Department of Chemical Biology and Genetics, Palacký University and Institute of Experimental Botany, Academy of Sciences of the Czech Republic, CZ-78371 Olomouc, Czech Republic (A.P., O.N.)
| | - Alain Vian
- IRHS (Research Institute on Horticulture and Seeds), Université d'Angers, Agrocampus-Ouest, Institut National de la Recherche Agronomique, SFR 4207 QUASAV, 49070 Beaucouzé, France (H.R., T.G., F.B., T.P., N.B., A.V., S.S., J.L., J.L.G., N.L.); andLaboratory of Growth Regulators and Department of Chemical Biology and Genetics, Palacký University and Institute of Experimental Botany, Academy of Sciences of the Czech Republic, CZ-78371 Olomouc, Czech Republic (A.P., O.N.)
| | - Soulaiman Sakr
- IRHS (Research Institute on Horticulture and Seeds), Université d'Angers, Agrocampus-Ouest, Institut National de la Recherche Agronomique, SFR 4207 QUASAV, 49070 Beaucouzé, France (H.R., T.G., F.B., T.P., N.B., A.V., S.S., J.L., J.L.G., N.L.); andLaboratory of Growth Regulators and Department of Chemical Biology and Genetics, Palacký University and Institute of Experimental Botany, Academy of Sciences of the Czech Republic, CZ-78371 Olomouc, Czech Republic (A.P., O.N.)
| | - Jérémy Lothier
- IRHS (Research Institute on Horticulture and Seeds), Université d'Angers, Agrocampus-Ouest, Institut National de la Recherche Agronomique, SFR 4207 QUASAV, 49070 Beaucouzé, France (H.R., T.G., F.B., T.P., N.B., A.V., S.S., J.L., J.L.G., N.L.); andLaboratory of Growth Regulators and Department of Chemical Biology and Genetics, Palacký University and Institute of Experimental Botany, Academy of Sciences of the Czech Republic, CZ-78371 Olomouc, Czech Republic (A.P., O.N.)
| | - José Le Gourrierec
- IRHS (Research Institute on Horticulture and Seeds), Université d'Angers, Agrocampus-Ouest, Institut National de la Recherche Agronomique, SFR 4207 QUASAV, 49070 Beaucouzé, France (H.R., T.G., F.B., T.P., N.B., A.V., S.S., J.L., J.L.G., N.L.); andLaboratory of Growth Regulators and Department of Chemical Biology and Genetics, Palacký University and Institute of Experimental Botany, Academy of Sciences of the Czech Republic, CZ-78371 Olomouc, Czech Republic (A.P., O.N.)
| | - Nathalie Leduc
- IRHS (Research Institute on Horticulture and Seeds), Université d'Angers, Agrocampus-Ouest, Institut National de la Recherche Agronomique, SFR 4207 QUASAV, 49070 Beaucouzé, France (H.R., T.G., F.B., T.P., N.B., A.V., S.S., J.L., J.L.G., N.L.); andLaboratory of Growth Regulators and Department of Chemical Biology and Genetics, Palacký University and Institute of Experimental Botany, Academy of Sciences of the Czech Republic, CZ-78371 Olomouc, Czech Republic (A.P., O.N.)
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Dal Santo S, Vannozzi A, Tornielli GB, Fasoli M, Venturini L, Pezzotti M, Zenoni S. Genome-wide analysis of the expansin gene superfamily reveals grapevine-specific structural and functional characteristics. PLoS One 2013; 8:e62206. [PMID: 23614035 PMCID: PMC3628503 DOI: 10.1371/journal.pone.0062206] [Citation(s) in RCA: 80] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2013] [Accepted: 03/18/2013] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND Expansins are proteins that loosen plant cell walls in a pH-dependent manner, probably by increasing the relative movement among polymers thus causing irreversible expansion. The expansin superfamily (EXP) comprises four distinct families: expansin A (EXPA), expansin B (EXPB), expansin-like A (EXLA) and expansin-like B (EXLB). There is experimental evidence that EXPA and EXPB proteins are required for cell expansion and developmental processes involving cell wall modification, whereas the exact functions of EXLA and EXLB remain unclear. The complete grapevine (Vitis vinifera) genome sequence has allowed the characterization of many gene families, but an exhaustive genome-wide analysis of expansin gene expression has not been attempted thus far. METHODOLOGY/PRINCIPAL FINDINGS We identified 29 EXP superfamily genes in the grapevine genome, representing all four EXP families. Members of the same EXP family shared the same exon-intron structure, and phylogenetic analysis confirmed a closer relationship between EXP genes from woody species, i.e. grapevine and poplar (Populus trichocarpa), compared to those from Arabidopsis thaliana and rice (Oryza sativa). We also identified grapevine-specific duplication events involving the EXLB family. Global gene expression analysis confirmed a strong correlation among EXP genes expressed in mature and green/vegetative samples, respectively, as reported for other gene families in the recently-published grapevine gene expression atlas. We also observed the specific co-expression of EXLB genes in woody organs, and the involvement of certain grapevine EXP genes in berry development and post-harvest withering. CONCLUSION Our comprehensive analysis of the grapevine EXP superfamily confirmed and extended current knowledge about the structural and functional characteristics of this gene family, and also identified properties that are currently unique to grapevine expansin genes. Our data provide a model for the functional characterization of grapevine gene families by combining phylogenetic analysis with global gene expression profiling.
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Affiliation(s)
- Silvia Dal Santo
- Department of Biotechnology, University of Verona, Verona, Italy
| | - Alessandro Vannozzi
- Department of Agronomy, Food, Natural Resources, Animals and Environment, University of Padova, Legnaro, Padova, Italy
| | | | - Marianna Fasoli
- Department of Biotechnology, University of Verona, Verona, Italy
| | - Luca Venturini
- Department of Biotechnology, University of Verona, Verona, Italy
| | - Mario Pezzotti
- Department of Biotechnology, University of Verona, Verona, Italy
| | - Sara Zenoni
- Department of Biotechnology, University of Verona, Verona, Italy
- * E-mail:
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