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Almoguera C, Prieto-Dapena P, Carranco R, Ruiz JL, Jordano J. Heat Stress Factors Expressed during Seed Maturation Differentially Regulate Seed Longevity and Seedling Greening. PLANTS 2020; 9:plants9030335. [PMID: 32155706 PMCID: PMC7154816 DOI: 10.3390/plants9030335] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Revised: 02/27/2020] [Accepted: 02/28/2020] [Indexed: 12/14/2022]
Abstract
Heat Stress Factor A9 (A9), a seed-specific transcription factor contributing to seed longevity, also enhances phytochrome-dependent seedling greening. The RNA-seq analyses of imbibed-seed transcripts here reported indicated potential additional effects of A9 on cryptochrome-mediated blue-light responses. These analyses also suggested that in contrast to the A9 effects on longevity, which require coactivation by additional factors as A4a, A9 alone might suffice for the enhancement of photomorphogenesis at the seedling stage. We found that upon its seed-specific overexpression, A9 indeed enhanced the expected blue-light responses. Comparative loss-of-function analyses of longevity and greening, performed by similar expression of dominant-negative and inactive forms of A9, not only confirmed the additional greening effects of A9, but also were consistent with A9 not requiring A4a (or additional factors) for the greening effects. Our results strongly indicate that A9 would differentially regulate seed longevity and photomorphogenesis at the seedling stage, A9 alone sufficing for both the phytochrome- and cryptochrome-dependent greening enhancement effects.
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Affiliation(s)
- Concepción Almoguera
- IRNAS, Av. Reina Mercedes 10, 41012 Sevilla, CSIC, Spain; (C.A.); (P.P.-D.); (R.C.)
| | - Pilar Prieto-Dapena
- IRNAS, Av. Reina Mercedes 10, 41012 Sevilla, CSIC, Spain; (C.A.); (P.P.-D.); (R.C.)
| | - Raúl Carranco
- IRNAS, Av. Reina Mercedes 10, 41012 Sevilla, CSIC, Spain; (C.A.); (P.P.-D.); (R.C.)
| | - José Luis Ruiz
- IPBLN, Av. del Conocimiento 17, 18016 Armilla, Granada, CSIC, Spain;
| | - Juan Jordano
- IRNAS, Av. Reina Mercedes 10, 41012 Sevilla, CSIC, Spain; (C.A.); (P.P.-D.); (R.C.)
- Correspondence:
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Hloušková P, Černý M, Kořínková N, Luklová M, Minguet EG, Brzobohatý B, Galuszka P, Bergougnoux V. Affinity chromatography revealed 14-3-3 interactome of tomato (Solanum lycopersicum L.) during blue light-induced de-etiolation. J Proteomics 2018; 193:44-61. [PMID: 30583044 DOI: 10.1016/j.jprot.2018.12.017] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2018] [Revised: 12/09/2018] [Accepted: 12/14/2018] [Indexed: 10/27/2022]
Abstract
De-etiolation is the first developmental process under light control allowing the heterotrophic seedling to become autotrophic. The phytohormones cytokinins (CKs) largely contribute to this process. Reversible phosphorylation is a key event of cell signaling, allowing proteins to become active or generating a binding site for specific protein interaction. 14-3-3 proteins regulate a variety of plant responses. The expression, hormonal regulation, and proteomic network under the control of 14-3-3s were addressed in tomato (Solanum lycopersicum L.) during blue light-induced photomorphogenesis. Two isoforms were specifically investigated due to their high expression during tomato de-etiolation. The multidisciplinary approach demonstrated that TFT9 expression, but not TFT6, was regulated by CKs and identified cis-regulating elements required for this response. Our study revealed >130 potential TFT6/9 interactors. Their functional annotation predicted that TFTs might regulate the activity of proteins involved notably in cell wall strengthening or primary metabolism. Several potential interactors were also predicted to be CK-responsive. For the first time, the 14-3-3 interactome linked to de-etiolation was investigated and evidenced that 14-3-3s might be involved in CK signaling pathway, cell expansion inhibition and steady-state growth rate establishment, and reprograming from heterotrophy to autotrophy. BIOLOGICAL SIGNIFICANCE: Tomato (Solanum lycopersicum L.) is one of the most important vegetables consumed all around the world and represents probably the most preferred garden crop. Regulation of hypocotyl growth by light plays an important role in the early development of a seedling, and consequently the homogeneity of the culture. The present study focuses on the importance of tomato 14-3-3/TFT proteins in this process. We provide here the first report of 14-3-3 interactome in the regulation of light-induced de-etiolation and subsequent photomorphogenesis. Our data provide new insights into light-induced de-etiolation and open new horizons for dissecting the post-transcriptional regulations.
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Affiliation(s)
- Petra Hloušková
- Department of Molecular Biology, Centre of the Region Hana for Biotechnological and Agricultural Research, Palacky University in Olomouc, Šlechtitelu 27, 783 71 Olomouc, Czechia
| | - Martin Černý
- Laboratory of Plant Molecular Biology, Institute of Biophysics AS CR and CEITEC-Central European Institute of Technology, Mendel University in Brno, Zemědělská 1, 613 00 Brno, Czechia
| | - Nikola Kořínková
- Department of Molecular Biology, Centre of the Region Hana for Biotechnological and Agricultural Research, Palacky University in Olomouc, Šlechtitelu 27, 783 71 Olomouc, Czechia
| | - Markéta Luklová
- Laboratory of Plant Molecular Biology, Institute of Biophysics AS CR and CEITEC-Central European Institute of Technology, Mendel University in Brno, Zemědělská 1, 613 00 Brno, Czechia
| | - Eugenio Gómez Minguet
- Instituto de Biología Molecular y Celular de Plantas (UPV-Consejo Superior de Investigaciones Científicas), Universidad Politécnica de Valencia, 46022, Valencia, Spain
| | - Břetislav Brzobohatý
- Laboratory of Plant Molecular Biology, Institute of Biophysics AS CR and CEITEC-Central European Institute of Technology, Mendel University in Brno, Zemědělská 1, 613 00 Brno, Czechia
| | - Petr Galuszka
- Department of Molecular Biology, Centre of the Region Hana for Biotechnological and Agricultural Research, Palacky University in Olomouc, Šlechtitelu 27, 783 71 Olomouc, Czechia
| | - Véronique Bergougnoux
- Department of Molecular Biology, Centre of the Region Hana for Biotechnological and Agricultural Research, Palacky University in Olomouc, Šlechtitelu 27, 783 71 Olomouc, Czechia.
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Proteomic approach to understand the molecular physiology of symbiotic interaction between Piriformospora indica and Brassica napus. Sci Rep 2018; 8:5773. [PMID: 29636503 PMCID: PMC5893561 DOI: 10.1038/s41598-018-23994-z] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Accepted: 03/15/2018] [Indexed: 01/18/2023] Open
Abstract
Many studies have been now focused on the promising approach of fungal endophytes to protect the plant from nutrient deficiency and environmental stresses along with better development and productivity. Quantitative and qualitative protein characteristics are regulated at genomic, transcriptomic, and posttranscriptional levels. Here, we used integrated in-depth proteome analyses to characterize the relationship between endophyte Piriformospora indica and Brassica napus plant highlighting its potential involvement in symbiosis and overall growth and development of the plant. An LC-MS/MS based label-free quantitative technique was used to evaluate the differential proteomics under P. indica treatment vs. control plants. In this study, 8,123 proteins were assessed, of which 46 showed significant abundance (34 downregulated and 12 upregulated) under high confidence conditions (p-value ≤ 0.05, fold change ≥2, confidence level 95%). Mapping of identified differentially expressed proteins with bioinformatics tools such as GO and KEGG pathway analysis showed significant enrichment of gene sets involves in metabolic processes, symbiotic signaling, stress/defense responses, energy production, nutrient acquisition, biosynthesis of essential metabolites. These proteins are responsible for root's architectural modification, cell remodeling, and cellular homeostasis during the symbiotic growth phase of plant's life. We tried to enhance our knowledge that how the biological pathways modulate during symbiosis?
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