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Balogh E, Halász J, Soltész A, Erös-Honti Z, Gutermuth Á, Szalay L, Höhn M, Vágújfalvi A, Galiba G, Hegedüs A. Identification, Structural and Functional Characterization of Dormancy Regulator Genes in Apricot ( Prunus armeniaca L.). Front Plant Sci 2019; 10:402. [PMID: 31024581 PMCID: PMC6460505 DOI: 10.3389/fpls.2019.00402] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Accepted: 03/18/2019] [Indexed: 05/12/2023]
Abstract
In the present study, we identified and characterized the apricot (Prunus armeniaca L.) homologs of three dormancy-related genes, namely the ParCBF1 (C-repeat binding factor), ParDAM5 (dormancy-associated MADS-BOX) and ParDAM6 genes. All highly conserved structural motifs and the 3D model of the DNA-binding domain indicate an unimpaired DNA-binding ability of ParCBF1. A phylogenetic analysis showed that ParCBF1 was most likely homologous to Prunus mume and Prunus dulcis CBF1. ParDAM5 also contained all characteristic domains of the type II (MIKCC) subfamily of MADS-box transcription factors. The homology modeling of protein domains and a phylogenetic analysis of ParDAM5 suggest its functional integrity. The amino acid positions or small motifs that are diagnostic characteristics of DAM5 and DAM6 were determined. For ParDAM6, only a small part of the cDNA was sequenced, which was sufficient for the quantification of gene expression. The expression of ParCBF1 showed close association with decreasing ambient temperatures in autumn and winter. The expression levels of ParDAM5 and ParDAM6 changed according to CBF1 expression rates and the fulfillment of cultivar chilling requirements (CR). The concomitant decrease of gene expression with endodormancy release is consistent with a role of ParDAM5 and ParDAM6 genes in dormancy induction and maintenance. Cultivars with higher CR and delayed flowering time showed higher expression levels of ParDAM5 and ParDAM6 toward the end of endodormancy. Differences in the timing of anther developmental stages between early- and late-flowering cultivars and two dormant seasons confirmed the genetically and environmentally controlled mechanisms of dormancy release in apricot generative buds. These results support that the newly identified apricot gene homologs have a crucial role in dormancy-associated physiological mechanisms.
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Affiliation(s)
- Eszter Balogh
- Department of Genetics and Plant Breeding, Faculty of Horticultural Science, Szent István University, Budapest, Hungary
| | - Júlia Halász
- Department of Genetics and Plant Breeding, Faculty of Horticultural Science, Szent István University, Budapest, Hungary
| | - Alexandra Soltész
- Department of Plant Molecular Biology, Agricultural Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, Martonvásár, Hungary
| | - Zsolt Erös-Honti
- Department of Botany and Soroksár Botanical Garden, Faculty of Horticultural Science, Szent István University, Budapest, Hungary
| | - Ádám Gutermuth
- Department of Genetics and Plant Breeding, Faculty of Horticultural Science, Szent István University, Budapest, Hungary
| | - László Szalay
- Department of Pomology, Faculty of Horticultural Science, Szent István University, Budapest, Hungary
| | - Mária Höhn
- Department of Botany and Soroksár Botanical Garden, Faculty of Horticultural Science, Szent István University, Budapest, Hungary
| | - Attila Vágújfalvi
- Department of Plant Molecular Biology, Agricultural Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, Martonvásár, Hungary
| | - Gábor Galiba
- Department of Plant Molecular Biology, Agricultural Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, Martonvásár, Hungary
- Festetics Doctoral School, Georgikon Faculty, University of Pannonia, Keszthely, Hungary
| | - Attila Hegedüs
- Department of Genetics and Plant Breeding, Faculty of Horticultural Science, Szent István University, Budapest, Hungary
- *Correspondence: Attila Hegedûs,
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Hegedüs A, Pfeiffer P, Papp N, Abrankó L, Blázovics A, Pedryc A, Stefanovits-Bányai E. Accumulation of antioxidants in apricot fruit through ripening: characterization of a genotype with enhanced functional properties. Biol Res 2012; 44:339-344. [PMID: 22446596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023] Open
Abstract
Two apricot genotypes, 'Gonci magyarkajszi' and 'Preventa' were assayed at three ripening stages for flesh color indices (L*, a*, b*, C* and Hº), contents of total phenolics and vitamin C, and both water- and lipid-soluble antioxidant capacities (ferric reducing antioxidant power; 2,2'-diphenyl-1-picrylhydrazyl scavenging activity; total radical scavenging activity; and Photochem lipid-soluble antioxidant capacity) to compare their dynamics in the accumulation of antioxidant compounds and capacities through ripening. The increase in a*, b* and C* and decrease in Hº during ripening represented a color shift from green to yellow and orange due to carotenoid accumulation. Parallel to carotenoid accumulation, contents of total phenolics and vitamin C and antioxidant capacity increased significantly (p < 0.05) from unripe to fully ripe fruits. More phenolics and vitamin C accumulated in fully ripe fruits of 'Preventa' than 'Gönci magyarkajszi'. The accumulation patterns of these compounds were different: while the vitamin C contents in unripe fruit of 'Preventa' and 'Gönci magyarkajszi' were identical (approx. 6 mg/100 g fresh weight), unripe 'Preventa' contained even more phenolics (approx. 12 mmolGA/l) than fully ripe 'Gönci magyarkajszi' (8 mmolGA/l). Our results confirm that fully ripe 'Preventa' fruits are characterized by outstanding functional properties due to the increased accumulation of vitamin C and phenolics throughout the ripening process.
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Affiliation(s)
- Attila Hegedüs
- Department of Genetics and Plant Breeding, Cowinus University of Budapest, Budapest, Hungary.
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Hegedüs A, Pfeiffer P, Papp N, Abrankó L, Blázovics A, Pedryc A, Stefanovits-Bányai É. Accumulation of Antioxidants in Apricot Fruit through Ripening: Characterization of a Genotype with Enhanced Functional Properties. Biol Res 2011. [DOI: 10.4067/s0716-97602011000400004] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Hegedüs A, Erdei S, Horváth G. Comparative studies of H(2)O(2) detoxifying enzymes in green and greening barley seedlings under cadmium stress. Plant Sci 2001; 160:1085-1093. [PMID: 11337065 DOI: 10.1016/s0168-9452(01)00330-2] [Citation(s) in RCA: 227] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Cadmium(Cd) stress induced alterations in the activities of several representatives of the enzymatic antioxidant defense system such as guiacol peroxidase (POD), catalase (CAT) and ascorbate peroxidase (APX) were comparatively studied in green and greening barley seedlings that represent two different stages of plant development. Although roots were the main site of Cd accumulation, 1.5-3% of Cd was translocated into leaves and it induced oxidative damage which was indicated by the reduced chlorophyll and increased malondialdehyde content of the leaves. In roots of both types of seedlings exposed to various Cd concentrations, the APX activity was enhanced without any increase in the activity of POD. In leaves, however, elevated activities of both POD and APX could be observed. In roots of green seedlings at high concentration of Cd, the APX activity was reduced on the fourth day of culture but no inhibition was found in the POD activity. Leaf CAT which mainly represented the peroxisomal enzyme activity did not display any changes under Cd stress. Our results show that at both developmental stages barley seedlings exhibit a well-defined activity of the enzymatic antioxidant system, which operates differentially in roots and shoots subjected to Cd stress.
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Affiliation(s)
- A Hegedüs
- Department of Molecular Plant Biology, Faculty of Horticultural Science, Szent István University, P.O. Box 53, H-1518, Budapest, Hungary
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Szondy M, Bodrossy F, Hegedüs A, Inkey J, Neményi M. [Psychological and biochemical screening of mentally retarded children aged 1-3 years]. Orv Hetil 1981; 122:515-7. [PMID: 7290696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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Góth E, Fövényi J, Hegedüs A. [Nonesterified fatty acid level in the blood in obesity and in diabetes]. Orv Hetil 1967; 108:977-80. [PMID: 6077676] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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Hanisch J, Blumenfeld G, Hegedüs A. [Behavior of blood lipids during and after glaucomatous attacks]. Orv Hetil 1967; 108:870-2. [PMID: 6077203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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Berkovits L, Hegedüs A. [Diffuse bronchiolitis in adults]. Orv Hetil 1966; 107:1081-3. [PMID: 5937457] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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