1
|
El-Kosary S, Hmmam I, E.G. G, Qenawy Y. COMPARATIVE STUDY OF THE PHYSICO-CHEMICAL PROPERTIES BETWEEN SOME POLLINATORS FOR "BARTAMODA" DATES IN ASWAN GOVERNORATE. Egypt J Chem 2022. [DOI: 10.21608/ejchem.2022.169172.7101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
|
2
|
ABDALLATIF ABDOU, Hmmam I, Ali M. Impact of Silver Nanoparticles Mixture with NAA and IBA on Rooting Potential of Psidium guajava L. Stem Cuttings. Egypt J Chem 2022. [DOI: 10.21608/ejchem.2022.155986.6751] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
|
3
|
Vannozzi A, Wong DCJ, Höll J, Hmmam I, Matus JT, Bogs J, Ziegler T, Dry I, Barcaccia G, Lucchin M. Combinatorial Regulation of Stilbene Synthase Genes by WRKY and MYB Transcription Factors in Grapevine (Vitis vinifera L.). Plant Cell Physiol 2018; 59:1043-1059. [PMID: 29529275 DOI: 10.1093/pcp/pcy045] [Citation(s) in RCA: 67] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2017] [Accepted: 02/20/2018] [Indexed: 05/20/2023]
Abstract
Stilbene synthase (STS) is the key enzyme leading to the biosynthesis of resveratrol. Recently we reported two R2R3-MYB transcription factor (TF) genes that regulate the stilbene biosynthetic pathway in grapevine: VviMYB14 and VviMYB15. These genes are strongly co-expressed with STS genes under a range of stress and developmental conditions, in agreement with the specific activation of STS promoters by these TFs. Genome-wide gene co-expression analysis using two separate transcriptome compendia based on microarray and RNA sequencing data revealed that WRKY TFs were the top TF family correlated with STS genes. On the basis of correlation frequency, four WRKY genes, namely VviWRKY03, VviWRKY24, VviWRKY43 and VviWRKY53, were further shortlisted and functionally validated. Expression analyses under both unstressed and stressed conditions, together with promoter-luciferase reporter assays, suggested different hierarchies for these TFs in the regulation of the stilbene biosynthetic pathway. In particular, VviWRKY24 seems to act as a singular effector in the activation of the VviSTS29 promoter, while VviWRKY03 acts through a combinatorial effect with VviMYB14, suggesting that these two regulators may interact at the protein level as previously reported in other species.
Collapse
Affiliation(s)
- Alessandro Vannozzi
- Department of Agronomy, Food, Natural resources, Animals, and Environment (DAFNAE), University of Padova, Legnaro 35020, Italy
| | - Darren Chern Jan Wong
- Ecology and Evolution, Research School of Biology, Australian National University Acton, ACT 2601, Australia
| | - Janine Höll
- Centre for Organismal Studies Heidelberg, University of Heidelberg, Heidelberg D-69120, Germany
| | - Ibrahim Hmmam
- Department of Agronomy, Food, Natural resources, Animals, and Environment (DAFNAE), University of Padova, Legnaro 35020, Italy
| | - José Tomás Matus
- Centre for Research in Agricultural Genomics (CRAG) CSIC-IRTA-UAB-UB, Barcelona 08034, Spain
| | - Jochen Bogs
- Centre for Organismal Studies Heidelberg, University of Heidelberg, Heidelberg D-69120, Germany
| | - Tobias Ziegler
- Centre for Organismal Studies Heidelberg, University of Heidelberg, Heidelberg D-69120, Germany
| | - Ian Dry
- CSIRO Agriculture & Food, Urrbrae, SA 5064, Australia
| | - Gianni Barcaccia
- Department of Agronomy, Food, Natural resources, Animals, and Environment (DAFNAE), University of Padova, Legnaro 35020, Italy
| | - Margherita Lucchin
- Department of Agronomy, Food, Natural resources, Animals, and Environment (DAFNAE), University of Padova, Legnaro 35020, Italy
| |
Collapse
|
4
|
Wong DCJ, Schlechter R, Vannozzi A, Höll J, Hmmam I, Bogs J, Tornielli GB, Castellarin SD, Matus JT. A systems-oriented analysis of the grapevine R2R3-MYB transcription factor family uncovers new insights into the regulation of stilbene accumulation. DNA Res 2016; 23:451-466. [PMID: 27407139 PMCID: PMC5066171 DOI: 10.1093/dnares/dsw028] [Citation(s) in RCA: 95] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2016] [Accepted: 05/17/2016] [Indexed: 01/12/2023] Open
Abstract
R2R3-MYB transcription factors (TFs) belong to a large and functionally diverse protein superfamily in plants. In this study, we explore the evolution and function of this family in grapevine (Vitis vinifera L.), a high-value fruit crop. We identified and manually curated 134 genes using RNA-Seq data, and named them systematically according to the Super-Nomenclature Committee. We identified novel genes, splicing variants and grapevine/woody-specific duplicated subgroups, suggesting possible neo- and sub-functionalization events. Regulatory network analysis ascribed biological functions to uncharacterized genes and validated those of known genes (e.g. secondary cell wall biogenesis and flavonoid biosynthesis). A comprehensive analysis of different MYB binding motifs in the promoters of co-expressed genes predicted grape R2R3-MYB binding preferences and supported evidence for putative downstream targets. Enrichment of cis-regulatory motifs for diverse TFs reinforced the notion of transcriptional coordination and interaction between MYBs and other regulators. Analysis of the network of Subgroup 2 showed that the resveratrol-related VviMYB14 and VviMYB15 share common co-expressed STILBENE SYNTHASE genes with the uncharacterized VviMYB13. These regulators have distinct expression patterns within organs and in response to biotic and abiotic stresses, suggesting a pivotal role of VviMYB13 in regulating stilbene accumulation in vegetative tissues and under biotic stress conditions.
Collapse
Affiliation(s)
| | | | - Alessandro Vannozzi
- Department of Agronomy, Food, Natural Resources, Animals, and Environment, University of Padova, 35020 Legnaro, Padova, Italy
| | - Janine Höll
- Centre for Organismal Studies Heidelberg, University of Heidelberg, 69120 Heidelberg, Germany
| | - Ibrahim Hmmam
- Department of Agronomy, Food, Natural Resources, Animals, and Environment, University of Padova, 35020 Legnaro, Padova, Italy
| | - Jochen Bogs
- Dienstleistungszentrum Laendlicher Raum Rheinpfalz, Breitenweg 71, Viticulture and Enology Group, 67435 Neustadt/W, Germany.,Fachhochschule Bingen, Berlinstr. 109, 55411 Bingen am Rhein, Germany
| | | | | | - José Tomás Matus
- Center for Research in Agricultural Genomics CSIC-IRTA-UAB-UB, Barcelona 08193, Spain
| |
Collapse
|