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Mellidou I, Kanellis AK. Revisiting the role of ascorbate oxidase in plant systems. J Exp Bot 2024; 75:2740-2753. [PMID: 38366668 DOI: 10.1093/jxb/erae058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Accepted: 02/13/2024] [Indexed: 02/18/2024]
Abstract
Ascorbic acid (AsA) plays an indispensable role in plants, serving as both an antioxidant and a master regulator of the cellular redox balance. Ascorbate oxidase (AO) is a blue copper oxidase that is responsible for the oxidation of AsA with the concomitant production of water. For many decades, AO was erroneously postulated as an enzyme without any obvious advantage, as it decreases the AsA pool size and thus is expected to weaken plant stress resistance. It was only a decade ago that this perspective shifted towards the fundamental role of AO in orchestrating both AsA and oxygen levels by influencing the overall redox balance in the extracellular matrix. Consistent with its localization in the apoplast, AO is involved in cell expansion, division, resource allocation, and overall plant yield. An increasing number of transgenic studies has demonstrated that AO can also facilitate communication between the surrounding environment and the cell, as its gene expression is highly responsive to factors such as hormonal signaling, oxidative stress, and mechanical injury. This review aims to describe the multiple functions of AO in plant growth, development, and stress resilience, and explore any additional roles the enzyme might have in fruits during the course of ripening.
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Affiliation(s)
- Ifigeneia Mellidou
- Institute of Plant Breeding and Genetic Resources, Hellenic Agricultural Organization ELGO-DIMITRA, 57001 Thessaloniki, Greece
| | - Angelos K Kanellis
- Group of Biotechnology of Pharmaceutical Plants, Laboratory of Pharmacognosy, Department of Pharmaceutical Sciences, Aristotle University of Thessaloniki, 541 24 Thessaloniki, Greece
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2
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Vasilopoulos S, Giannenas I, Mellidou I, Stylianaki I, Antonopoulou E, Tzora A, Skoufos I, Athanassiou CG, Papadopoulos E, Fortomaris P. Diet replacement with whole insect larvae affects intestinal morphology and microbiota of broiler chickens. Sci Rep 2024; 14:6836. [PMID: 38514719 PMCID: PMC10957974 DOI: 10.1038/s41598-024-54184-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Accepted: 02/09/2024] [Indexed: 03/23/2024] Open
Abstract
Insect-based diets are gaining interest as potential ingredients in improving poultry gut health. This study assessed the dietary treatment with whole dried Tenebrio molitor larvae (TM) on broiler chickens' gut microbiota and morphology. 120 Ross-308 broilers received treated diets with 5% (TM5) and 10% (TM10) replacement ratio in a 35-day trial. Intestinal histomorphometry was assessed, as well as claudin-3 expression pattern and ileal and caecal digesta for microbial community diversity. Null hypothesis was tested with two-way ANOVA considering the intestinal segment and diet as main factors. The TM5 group presented higher villi in the duodenum and ileum compared to the other two (P < 0.001), while treated groups showed shallower crypts in the duodenum (P < 0.001) and deeper in the jejunum and ileum than the control (P < 0.001). Treatments increased the caecal Firmicutes/Bacteroidetes ratio and led to significant changes at the genus level. While Lactobacilli survived in the caecum, a significant reduction was evident in the ileum of both groups, mainly owed to L. aviarius. Staphylococci and Methanobrevibacter significantly increased in the ileum of the TM5 group. Results suggest that dietary supplementation with whole dried TM larvae has no adverse effect on the intestinal epithelium formation and positively affects bacterial population richness and diversity.
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Affiliation(s)
- Stylianos Vasilopoulos
- Laboratory of Nutrition, Faculty of Veterinary Medicine, Aristotle University of Thessaloniki, 54124, Thessaloníki, Greece.
| | - Ilias Giannenas
- Laboratory of Nutrition, Faculty of Veterinary Medicine, Aristotle University of Thessaloniki, 54124, Thessaloníki, Greece
| | - Ifigeneia Mellidou
- Institute of Plant Breeding and Genetic Resources, Hellenic Agricultural Organization-DIMITRA, 57001, Thessaloníki, Greece
| | - Ioanna Stylianaki
- Laboratory of Pathology, Faculty of Veterinary Medicine, Aristotle University of Thessaloniki, 54124, Thessaloníki, Greece
| | - Efthimia Antonopoulou
- Laboratory of Animal Physiology, Department of Zoology, School of Biology, Aristotle University of Thessaloniki, 54124, Thessaloníki, Greece
| | - Athina Tzora
- Laboratory of Animal Health, Food Hygiene and Quality, Department of Agriculture, University of Ioannina, 47100, Arta, Greece
| | - Ioannis Skoufos
- Laboratory of Animal Science, Nutrition and Biotechnology, School of Agriculture, University of Ioannina, 47100, Arta, Greece
| | - Christos G Athanassiou
- Laboratory of Entomology and Agricultural Zoology, Department of Agriculture, Crop Production and Rural Environment, University of Thessaly, Phytokou Str., 38446, N. Ionia, Volos, Greece
| | - Elias Papadopoulos
- Laboratory of Parasitology and Parasitic Diseases, Faculty of Veterinary Medicine, Aristotle University of Thessaloniki, 54124, Thessaloníki, Greece
| | - Paschalis Fortomaris
- Laboratory of Animal Husbandry, Faculty of Veterinary Medicine, Aristotle University of Thessaloniki, 54124, Thessaloníki, Greece
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Papadopoulou A, Ainalidou A, Mellidou I, Karamanoli K. Metabolome and transcriptome reprogramming underlying tomato drought resistance triggered by a Pseudomonas strain. Plant Physiol Biochem 2023; 203:108080. [PMID: 37812990 DOI: 10.1016/j.plaphy.2023.108080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Revised: 09/05/2023] [Accepted: 10/03/2023] [Indexed: 10/11/2023]
Abstract
Although amelioration of drought stress by Plant Growth Promoting Rhizobacteria (PGPR) is a well-documented phenomenon, the combined molecular and metabolic mechanisms governing this process remain unclear. In these lines, the present study aimed to provide new insights in the underlying drought attenuating mechanisms of tomato plants inoculated with a PGP Pseudomonas putida strain, by using a combination of metabolomic and transcriptomic approaches. Following Differentially Expressed Gene analysis, it became evident that inoculation resulted in a less disturbed plant transcriptome upon drought stress. Untargeted metabolomics highlighted the differential metabolite accumulation upon inoculation, as well as the less metabolic reprograming and the lower accumulation of stress-related metabolites for inoculated stressed plants. These findings were in line with morpho-physiological evidence of drought stress mitigation in the inoculated plants. The redox state modulation, the more efficient nitrogen assimilation, as well as the differential changes in amino acid metabolism, and the induction of the phenylpropanoid biosynthesis pathway, were the main drought-attenuating mechanisms in the SAESo11-inoculated plants. Shifts in pathways related to hormonal signaling were also evident upon inoculation at a transcript level and in conjunction with carbon metabolism regulation, possibly contributed to a drought-attenuation preconditioning. The identified signatory molecules of SAESo11-mediated priming against drought included aspartate, myo-inositol, glutamate, along with key genes related to trehalose, tryptophan and cysteine synthesis. Taken together, SAESo11-inoculation provides systemic effects encompassing both metabolic and regulatory functions, supporting both seedling growth and drought stress amelioration.
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Affiliation(s)
- Anastasia Papadopoulou
- Laboratory of Agricultural Chemistry, School of Agriculture, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Aggeliki Ainalidou
- Laboratory of Agricultural Chemistry, School of Agriculture, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Ifigeneia Mellidou
- Institute of Plant Breeding and Genetic Resources, Hellenic Agricultural Organization DEMETER, Thermi, Greece
| | - Katerina Karamanoli
- Laboratory of Agricultural Chemistry, School of Agriculture, Aristotle University of Thessaloniki, Thessaloniki, Greece.
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Bazakos C, Alexiou KG, Ramos-Onsins S, Koubouris G, Tourvas N, Xanthopoulou A, Mellidou I, Moysiadis T, Vourlaki IT, Metzidakis I, Sergentani C, Manolikaki I, Michailidis M, Pistikoudi A, Polidoros A, Kostelenos G, Aravanopoulos F, Molassiotis A, Ganopoulos I. Whole genome scanning of a Mediterranean basin hotspot collection provides new insights into olive tree biodiversity and biology. Plant J 2023; 116:303-319. [PMID: 37164361 DOI: 10.1111/tpj.16270] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Revised: 03/29/2023] [Accepted: 04/29/2023] [Indexed: 05/12/2023]
Abstract
Olive tree (Olea europaea L. subsp. europaea var. europaea) is one of the most important species of the Mediterranean region and one of the most ancient species domesticated. The availability of whole genome assemblies and annotations of olive tree cultivars and oleaster (O. europaea subsp. europaea var. sylvestris) has contributed to a better understanding of genetic and genomic differences between olive tree cultivars. However, compared to other plant species there is still a lack of genomic resources for olive tree populations that span the entire Mediterranean region. In the present study we developed the most complete genomic variation map and the most comprehensive catalog/resource of molecular variation to date for 89 olive tree genotypes originating from the entire Mediterranean basin, revealing the genetic diversity of this commercially significant crop tree and explaining the divergence/similarity among different variants. Additionally, the monumental ancient tree 'Throuba Naxos' was studied to characterize the potential origin or routes of olive tree domestication. Several candidate genes known to be associated with key agronomic traits, including olive oil quality and fruit yield, were uncovered by a selective sweep scan to be under selection pressure on all olive tree chromosomes. To further exploit the genomic and phenotypic resources obtained from the current work, genome-wide association analyses were performed for 23 morphological and two agronomic traits. Significant associations were detected for eight traits that provide valuable candidates for fruit tree breeding and for deeper understanding of olive tree biology.
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Affiliation(s)
- Christos Bazakos
- Institute of Plant Breeding and Genetic Resources, Hellenic Agricultural Organization (ELGO) DIMITRA, Thermi, 57001, Thessaloniki, Greece
- Joint Laboratory of Horticulture, Hellenic Agricultural Organization (ELGO) DIMITRA, Thermi, 57001, Thessaloniki, Greece
- Department of Comparative Development and Genetics, Max Planck Institute for Plant Breeding Research, Carl-von-Linné-Weg 10, 50829, Cologne, Germany
| | - Konstantinos G Alexiou
- Centre for Research in Agricultural Genomics, CSIC-IRTA-UAB-UB, Campus UAB, Barcelona, Spain
- Institut de Recerca i Tecnologia Agroalimentàries, Barcelona, Spain
| | - Sebastián Ramos-Onsins
- Centre for Research in Agricultural Genomics, CSIC-IRTA-UAB-UB, Campus UAB, Barcelona, Spain
- Institut de Recerca i Tecnologia Agroalimentàries, Barcelona, Spain
| | - Georgios Koubouris
- Institute of Olive Tree, Subtropical Crops and Viticulture, Hellenic Agricultural Organization (ELGO) DIMITRA, Chania, 73134, Greece
| | - Nikolaos Tourvas
- Laboratory of Forest Genetics, Faculty of Agriculture, Forestry and Natural Environment, Aristotle University of Thessaloniki, 54124, Thessaloniki, Greece
| | - Aliki Xanthopoulou
- Institute of Plant Breeding and Genetic Resources, Hellenic Agricultural Organization (ELGO) DIMITRA, Thermi, 57001, Thessaloniki, Greece
- Joint Laboratory of Horticulture, Hellenic Agricultural Organization (ELGO) DIMITRA, Thermi, 57001, Thessaloniki, Greece
| | - Ifigeneia Mellidou
- Institute of Plant Breeding and Genetic Resources, Hellenic Agricultural Organization (ELGO) DIMITRA, Thermi, 57001, Thessaloniki, Greece
- Joint Laboratory of Horticulture, Hellenic Agricultural Organization (ELGO) DIMITRA, Thermi, 57001, Thessaloniki, Greece
| | - Theodoros Moysiadis
- Institute of Plant Breeding and Genetic Resources, Hellenic Agricultural Organization (ELGO) DIMITRA, Thermi, 57001, Thessaloniki, Greece
- Department of Computer Science, School of Sciences and Engineering, University of Nicosia, Nicosia, 2417, Cyprus
| | - Ioanna-Theoni Vourlaki
- Centre for Research in Agricultural Genomics, CSIC-IRTA-UAB-UB, Campus UAB, Barcelona, Spain
- Institut de Recerca i Tecnologia Agroalimentàries, Barcelona, Spain
| | - Ioannis Metzidakis
- Institute of Olive Tree, Subtropical Crops and Viticulture, Hellenic Agricultural Organization (ELGO) DIMITRA, Chania, 73134, Greece
| | - Chrysi Sergentani
- Institute of Olive Tree, Subtropical Crops and Viticulture, Hellenic Agricultural Organization (ELGO) DIMITRA, Chania, 73134, Greece
| | - Ioanna Manolikaki
- Institute of Olive Tree, Subtropical Crops and Viticulture, Hellenic Agricultural Organization (ELGO) DIMITRA, Chania, 73134, Greece
| | - Michail Michailidis
- Laboratory of Pomology, Department of Horticulture, Aristotle University of Thessaloniki, Thermi, 57001, Thessaloniki, Greece
| | - Adamantia Pistikoudi
- Laboratory of Genetics and Plant Breeding, School of Agriculture, Aristotle University of Thessaloniki, 54124, Thessaloniki, Greece
| | - Alexios Polidoros
- Laboratory of Genetics and Plant Breeding, School of Agriculture, Aristotle University of Thessaloniki, 54124, Thessaloniki, Greece
| | | | - Filippos Aravanopoulos
- Laboratory of Forest Genetics, Faculty of Agriculture, Forestry and Natural Environment, Aristotle University of Thessaloniki, 54124, Thessaloniki, Greece
| | - Athanassios Molassiotis
- Laboratory of Pomology, Department of Horticulture, Aristotle University of Thessaloniki, Thermi, 57001, Thessaloniki, Greece
| | - Ioannis Ganopoulos
- Institute of Plant Breeding and Genetic Resources, Hellenic Agricultural Organization (ELGO) DIMITRA, Thermi, 57001, Thessaloniki, Greece
- Joint Laboratory of Horticulture, Hellenic Agricultural Organization (ELGO) DIMITRA, Thermi, 57001, Thessaloniki, Greece
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Mellidou I, Koukounaras A, Frusciante S, Rambla JL, Patelou E, Ntoanidou S, Pons C, Kostas S, Nikoloudis K, Granell A, Diretto G, Kanellis AK. A metabolome and transcriptome survey to tap the dynamics of fruit prolonged shelf-life and improved quality within Greek tomato germplasm. Front Plant Sci 2023; 14:1267340. [PMID: 37818313 PMCID: PMC10560995 DOI: 10.3389/fpls.2023.1267340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Accepted: 09/05/2023] [Indexed: 10/12/2023]
Abstract
Introduction Tomato is a high economic value crop worldwide with recognized nutritional properties and diverse postharvest potential. Nowadays, there is an emerging awareness about the exploitation and utilization of underutilized traditional germplasm in modern breeding programs. In this context, the existing diversity among Greek accessions in terms of their postharvest life and nutritional value remains largely unexplored. Methods Herein, a detailed evaluation of 130 tomato Greek accessions for postharvest and nutritional characteristics was performed, using metabolomics and transcriptomics, leading to the selection of accessions with these interesting traits. Results The results showed remarkable differences among tomato Greek accessions for overall ripening parameters (color, firmness) and weight loss. On the basis of their postharvest performance, a balance between short shelf life (SSL) and long shelf life (LSL) accessions was revealed. Metabolome analysis performed on 14 selected accessions with contrasting shelf-life potential identified a total of 206 phytonutrients and volatile compounds. In turn, transcriptome analysis in fruits from the best SSL and the best LSL accessions revealed remarkable differences in the expression profiles of transcripts involved in key metabolic pathways related to fruit quality and postharvest potential. Discussion The pathways towards cell wall synthesis, polyamine synthesis, ABA catabolism, and steroidal alkaloids synthesis were mostly induced in the LSL accession, whereas those related to ethylene biosynthesis, cell wall degradation, isoprenoids, phenylpropanoids, ascorbic acid and aroma (TomloxC) were stimulated in the SSL accession. Overall, these data would provide valuable insights into the molecular mechanism towards enhancing shelf-life and improving flavor and aroma of modern tomato cultivars.
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Affiliation(s)
- Ifigeneia Mellidou
- Institute of Plant Breeding and Genetic Resources, Hellenic Agricultural Organization – DEMETER, Thessaloniki, Greece
- Group of Biotechnology of Pharmaceutical Plants, Laboratory of Pharmacognosy, Department of Pharmaceutical Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Athanasios Koukounaras
- Group of Biotechnology of Pharmaceutical Plants, Laboratory of Pharmacognosy, Department of Pharmaceutical Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece
- Department of Horticulture, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Sarah Frusciante
- Italian National Agency for New Technologies, Energy, and Sustainable Development (ENEA), Biotechnology Laboratory, Casaccia Research Center, Rome, Italy
| | - José L. Rambla
- Instituto de Biología Molecular y Celular de Plantas (IBMCP), Consejo Superior de Investigaciones Científicas (CSIC), Universitat Politècnica de València, València, Spain
- Department of Biology, Biochemistry and Natural Sciences, Universitat Jaume I, Castellón de la Plana, Spain
| | - Efstathia Patelou
- Group of Biotechnology of Pharmaceutical Plants, Laboratory of Pharmacognosy, Department of Pharmaceutical Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Symela Ntoanidou
- Group of Biotechnology of Pharmaceutical Plants, Laboratory of Pharmacognosy, Department of Pharmaceutical Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Clara Pons
- Instituto de Biología Molecular y Celular de Plantas (IBMCP), Consejo Superior de Investigaciones Científicas (CSIC), Universitat Politècnica de València, València, Spain
- Instituto de Conservación y Mejora de la Agrodiversidad Valenciana (COMAV), Universitat Politècnica de València, València, Spain
| | - Stefanos Kostas
- Group of Biotechnology of Pharmaceutical Plants, Laboratory of Pharmacognosy, Department of Pharmaceutical Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece
- Department of Horticulture, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | | | - Antonio Granell
- Instituto de Biología Molecular y Celular de Plantas (IBMCP), Consejo Superior de Investigaciones Científicas (CSIC), Universitat Politècnica de València, València, Spain
| | - Gianfranco Diretto
- Italian National Agency for New Technologies, Energy, and Sustainable Development (ENEA), Biotechnology Laboratory, Casaccia Research Center, Rome, Italy
| | - Angelos K. Kanellis
- Group of Biotechnology of Pharmaceutical Plants, Laboratory of Pharmacognosy, Department of Pharmaceutical Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece
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Kadoglidou K, Cook C, Boutsika A, Sarrou E, Mellidou I, Aidonidou C, Grigoriadis I, Angeli A, Martens S, Georgiadou V, Moysiadis T, Ralli P, Mylonas I, Tourvas N, Michailidis M, Kalivas A, Maloupa E, Ganopoulos I, Xanthopoulou A. Evaluation of a dill ( Anethum graveolens L.) gene bank germplasm collection using multivariate analysis of morphological traits, molecular genotyping and chemical composition to identify novel genotypes for plant breeding. PeerJ 2023; 11:e15043. [PMID: 37013148 PMCID: PMC10066692 DOI: 10.7717/peerj.15043] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Accepted: 02/21/2023] [Indexed: 03/31/2023] Open
Abstract
Dill (Anethum graveolens L.) is an aromatic herb widely used in the food industry, with several commercial cultivars available with different qualitative characteristics. Commercial cultivars are usually preferred over landraces due to their higher yield and also the lack of improved landraces than can be commercialized. In Greece, however, traditional dill landraces are cultivated by local communities. Many are conserved in the Greek Gene Bank and the aim here was to investigate and compare the morphological, genetic, and chemical biodiversity of twenty-two Greek landraces and nine modern/commercial cultivars. Multivariate analysis of the morphological descriptors, molecular markers, and essential oil and polyphenol composition revealed that the Greek landraces were clearly distinguished compared with modern cultivars at the level of phenological, molecular and chemical traits. Landraces were typically taller, with larger umbels, denser foliage, and larger leaves. Plant height, density of foliage, density of feathering as well as aroma characteristics were desirable traits observed for some landraces, such as T538/06 and GRC-1348/04, which were similar or superior to those of some commercial cultivars. Polymorphic loci for inter-simple sequence repeat (ISSR) and start codon targeted (SCoT) molecular markers were 76.47% and 72.41% for landraces, and 68.24% and 43.10% for the modern cultivars, respectively. Genetic divergence was shown, but not complete isolation, indicating that some gene flow may have occurred between landraces and cultivars. The major constituent in all dill leaf essential oils was α-phellandrene (54.42–70.25%). Landraces had a higher α-phellandrene and dill ether content than cultivars. Two dill landraces were rich in chlorogenic acid, the main polyphenolic compound determined. The study highlighted for the first-time Greek landraces with desirable characteristics regarding quality, yield, and harvest time suitable for breeding programs to develop new dill cultivars with superior features.
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Affiliation(s)
- Kalliopi Kadoglidou
- ELGO DIMITRA, Institute of Plant Breeding and Genetic Resources, Thessaloniki, Greece
| | - Catherine Cook
- ELGO DIMITRA, Institute of Plant Breeding and Genetic Resources, Thessaloniki, Greece
| | - Anastasia Boutsika
- ELGO DIMITRA, Institute of Plant Breeding and Genetic Resources, Thessaloniki, Greece
| | - Eirini Sarrou
- ELGO DIMITRA, Institute of Plant Breeding and Genetic Resources, Thessaloniki, Greece
| | - Ifigeneia Mellidou
- ELGO DIMITRA, Institute of Plant Breeding and Genetic Resources, Thessaloniki, Greece
| | - Christina Aidonidou
- ELGO DIMITRA, Institute of Plant Breeding and Genetic Resources, Thessaloniki, Greece
| | - Ioannis Grigoriadis
- ELGO DIMITRA, Institute of Plant Breeding and Genetic Resources, Thessaloniki, Greece
| | - Andrea Angeli
- Fondazione Edmund Mach, Center of Research and Innovation, San Michele all’Adige, Trento, Italy
| | - Stefan Martens
- Fondazione Edmund Mach, Center of Research and Innovation, San Michele all’Adige, Trento, Italy
| | - Vasiliki Georgiadou
- ELGO DIMITRA, Institute of Plant Breeding and Genetic Resources, Thessaloniki, Greece
| | - Theodoros Moysiadis
- ELGO DIMITRA, Institute of Plant Breeding and Genetic Resources, Thessaloniki, Greece
- Department of Computer Science, School of Sciences and Engineering, University of Nicosia, Nicosia, Cyprus
| | - Parthenopi Ralli
- ELGO DIMITRA, Institute of Plant Breeding and Genetic Resources, Thessaloniki, Greece
| | - Ioannis Mylonas
- ELGO DIMITRA, Institute of Plant Breeding and Genetic Resources, Thessaloniki, Greece
| | - Nikolaos Tourvas
- ELGO DIMITRA, Institute of Plant Breeding and Genetic Resources, Thessaloniki, Greece
| | - Michail Michailidis
- ELGO DIMITRA, Institute of Plant Breeding and Genetic Resources, Thessaloniki, Greece
| | - Apostolos Kalivas
- ELGO DIMITRA, Institute of Plant Breeding and Genetic Resources, Thessaloniki, Greece
| | - Eleni Maloupa
- ELGO DIMITRA, Institute of Plant Breeding and Genetic Resources, Thessaloniki, Greece
| | - Ioannis Ganopoulos
- ELGO DIMITRA, Institute of Plant Breeding and Genetic Resources, Thessaloniki, Greece
| | - Aliki Xanthopoulou
- ELGO DIMITRA, Institute of Plant Breeding and Genetic Resources, Thessaloniki, Greece
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7
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Dokou S, Mellidou I, Savvidou S, Stylianaki I, Panteli N, Antonopoulou E, Wang J, Grigoriadou K, Tzora A, Jin L, Skoufos IA, Giannenas I. A phytobiotic extract, in an aqueous or in a cyclodextrin encapsulated form, added in diet affects meat oxidation, cellular responses and intestinal morphometry and microbiota of broilers. Front Anim Sci 2023. [DOI: 10.3389/fanim.2023.1050170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/17/2023] Open
Abstract
The present trial examined the effects of diet supplementation with an extract including Greek oregano, garlic, rock samphire, and camelina, administered either in aqueous form or encapsulated in cyclodextrin, on broiler chickens. The duration of the trial was 35 days. Mixed broiler chicks (Ross-308, 120 individuals, 1 day old) were randomly allocated to one of three groups, each with four replicates. Control group A (CONTROL) was fed a basal diet consisting of maize and soybean. The diet of the AQORGCC and CDORGCC groups was further supplemented with aqueous and cyclodextrin-encapsulated herbal extracts, respectively. Levels of lipid and protein oxidation were determined in breast and thigh meat samples. Furthermore, to address cellular stress and signaling responses, the expression patterns of heat shock proteins (Hsp60, Hsp70, and Hsp90), mitogen-activated protein kinases (P38 and P44/42 MAPKs), and apoptotic-related proteins (Bcl-2/Bad ratio) were investigated in breast and thigh tissues using Western blot analysis. The intestinal morphometry of the duodenum, jejunum, and ileum was also assessed. To investigate ileal and cecal bacterial community diversity, 16S rRNA gene high-throughput amplicon sequencing on the V3–V4 hypervariable region was performed. The results showed that the herbal extract in cyclodextrin delayed meat lipid oxidation. According to the protein expression patterns, the formulated diets elicited tissue-specific cellular responses. Compared with the CONTROL group, dietary supplementation with the encapsulated form resulted in significant Hsp induction and MAPK activation, whereas, in the group whose diet was supplemented with the aqueous form, the expression of most of the examined proteins decreased or was maintained at a constant level. Villus height and lamina propria width were mostly affected by the aqueous herbal extract, whereas the number of goblet cells remained unchanged among the groups. Firmicutes, Proteobacteria, and Bacteroidota were the major phyla in mean relative abundance in all diets in both cecal and ileal samples. Alpha-diversity indices highlighted higher species richness and diversity in the cecum than in the ileum, as well as in chicks treated with the aqueous extract of the herbal mixture, but only in the cecum. Cecal beta-diversity differed between the cyclodextrin and the CONTROL groups, while ileal beta-diversity varied only between the aqueous-treated group and the CONTROL group. In conclusion, the dietary mixtures of herbal extracts (particularly those encapsulated in cyclodextrin) improved protein and lipid oxidation and increased the number of beneficial lactic acid-producing bacteria in the cecum, whereas the aqueous herbal extract mostly affected bacterial activity in the proximal part of the chicken intestine. Similarly, intestinal morphometry in the duodenum, jejunum, and ileum was mostly affected by the aqueous herbal extract, which seems to inhibit proteins associated with stress signaling in meat.
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Boutsika A, Michailidis M, Ganopoulou M, Dalakouras A, Skodra C, Xanthopoulou A, Stamatakis G, Samiotaki M, Tanou G, Moysiadis T, Angelis L, Bazakos C, Molassiotis A, Nianiou-Obeidat I, Mellidou I, Ganopoulos I. A wide foodomics approach coupled with metagenomics elucidates the environmental signature of potatoes. iScience 2023; 26:105917. [PMID: 36691616 PMCID: PMC9860355 DOI: 10.1016/j.isci.2022.105917] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 09/17/2022] [Revised: 11/28/2022] [Accepted: 12/29/2022] [Indexed: 01/06/2023] Open
Abstract
The term "terroir" has been widely employed to link differential geographic phenotypes with sensorial signatures of agricultural food products, influenced by agricultural practices, soil type, and climate. Nowadays, the geographical indications labeling has been developed to safeguard the quality of plant-derived food that is linked to a certain terroir and is generally considered as an indication of superior organoleptic properties. As the dynamics of agroecosystems are highly intricate, consisting of tangled networks of interactions between plants, microorganisms, and the surrounding environment, the recognition of the key molecular components of terroir fingerprinting remains a great challenge to protect both the origin and the safety of food commodities. Furthermore, the contribution of microbiome as a potential driver of the terroir signature has been underestimated. Herein, we present a first comprehensive view of the multi-omic landscape related to transcriptome, proteome, epigenome, and metagenome of the popular Protected Geographical Indication potatoes of Naxos.
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Affiliation(s)
- Anastasia Boutsika
- Institute of Plant Breeding and Genetic Resources, ELGO-DIMITRA, 570001 Thessaloniki-Thermi, Greece
- Laboratory of Genetics and Plant Breeding, School of Agriculture, Aristotle University, 54124 Thessaloniki, Greece
| | - Michail Michailidis
- Joint Laboratory of Horticulture, ELGO-DIMITRA, 57001 Thessaloniki-Thermi, 21 Greece
| | - Maria Ganopoulou
- School of Informatics, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Athanasios Dalakouras
- Institute of Plant Breeding and Genetic Resources, ELGO-DIMITRA, 570001 Thessaloniki-Thermi, Greece
| | - Christina Skodra
- Laboratory of Pomology, Department of Horticulture, Aristotle University of Thessaloniki, 57001 Thessaloniki-Thermi, Greece
| | - Aliki Xanthopoulou
- Institute of Plant Breeding and Genetic Resources, ELGO-DIMITRA, 570001 Thessaloniki-Thermi, Greece
- Joint Laboratory of Horticulture, ELGO-DIMITRA, 57001 Thessaloniki-Thermi, 21 Greece
| | - George Stamatakis
- Institute for Bioinnovation, Biomedical Sciences Research Center “Alexander Fleming”, 16672 Vari, Greece
| | - Martina Samiotaki
- Institute for Bioinnovation, Biomedical Sciences Research Center “Alexander Fleming”, 16672 Vari, Greece
| | - Georgia Tanou
- Joint Laboratory of Horticulture, ELGO-DIMITRA, 57001 Thessaloniki-Thermi, 21 Greece
- Institute of Soil and Water Resources, ELGO-DIMITRA, 57001 Thessaloniki-Thermi, Greece
| | - Theodoros Moysiadis
- Institute of Plant Breeding and Genetic Resources, ELGO-DIMITRA, 570001 Thessaloniki-Thermi, Greece
- Department of Computer Science, School of Sciences and Engineering, University of Nicosia, 2417 Nicosia, Cyprus
| | - Lefteris Angelis
- School of Informatics, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Christos Bazakos
- Institute of Plant Breeding and Genetic Resources, ELGO-DIMITRA, 570001 Thessaloniki-Thermi, Greece
- Joint Laboratory of Horticulture, ELGO-DIMITRA, 57001 Thessaloniki-Thermi, 21 Greece
- Max Planck Institute for Plant Breeding Research, Department of Comparative Development and Genetics, Carl-von-Linné-Weg 10, 50829 Cologne, Germany
| | - Athanassios Molassiotis
- Laboratory of Pomology, Department of Horticulture, Aristotle University of Thessaloniki, 57001 Thessaloniki-Thermi, Greece
| | - Irini Nianiou-Obeidat
- Laboratory of Genetics and Plant Breeding, School of Agriculture, Aristotle University, 54124 Thessaloniki, Greece
| | - Ifigeneia Mellidou
- Institute of Plant Breeding and Genetic Resources, ELGO-DIMITRA, 570001 Thessaloniki-Thermi, Greece
- Joint Laboratory of Horticulture, ELGO-DIMITRA, 57001 Thessaloniki-Thermi, 21 Greece
- Corresponding author
| | - Ioannis Ganopoulos
- Institute of Plant Breeding and Genetic Resources, ELGO-DIMITRA, 570001 Thessaloniki-Thermi, Greece
- Joint Laboratory of Horticulture, ELGO-DIMITRA, 57001 Thessaloniki-Thermi, 21 Greece
- Corresponding author
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9
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Koukounaras A, Mellidou I, Patelou E, Kostas S, Shukla V, Engineer C, Papaefthimiou D, Amari F, Chatzopoulos D, Mattoo AK, Kanellis AK. Over-expression of GGP1 and GPP genes enhances ascorbate content and nutritional quality of tomato. Plant Physiol Biochem 2022; 193:124-138. [PMID: 36356544 DOI: 10.1016/j.plaphy.2022.10.023] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Revised: 10/11/2022] [Accepted: 10/19/2022] [Indexed: 06/16/2023]
Abstract
L-Ascorbic acid (AsA), a strong antioxidant, serves as an enzyme cofactor and redox status marker, modulating a plethora of biological processes. As tomato commercial varieties and hybrids possess relatively low amounts of AsA, the improvement of fruit AsA represents a strategic goal for enhanced human health. Previously, we have suggested that GDP-L-Galactose phosphorylase (GGP) and L-galactose-1-phosphate phosphatase (GPP) can serve as possible targets for AsA manipulation in tomato (Solanum lycopersicon L.) fruit. To this end, we produced and evaluated T3 transgenic tomato plants carrying these two genes under the control of CaMV-35S and two fruit specific promoters, PPC2 and PG-GGPI. The transgenic lines had elevated levels of AsA, with the PG-GGP1 line containing 3-fold more AsA than WT, without affecting fruit characteristics. Following RNA-Seq analysis, 164 and 13 DEGs were up- or down-regulated, respectively, between PG-GGP1 and WT pink fruits. PG-GGP1 fruit had a distinct number of up-regulated transcripts associated with cell wall modification, ethylene biosynthesis and signaling, pollen fertility and carotenoid metabolism. The elevated AsA accumulation resulted in the up regulation of AsA associated transcripts and alternative biosynthetic pathways suggesting that the entire metabolic pathway was influenced, probably via master regulation. We show here that AsA-fortification of tomato ripe fruit via GGP1 overexpression under the action of a fruit specific promoter PG affects fruit development and ripening, reduces ethylene production, and increased the levels of sugars, and carotenoids, supporting a robust database to further explore the role of AsA induced genes for agronomically important traits, breeding programs and precision gene editing approaches.
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Affiliation(s)
- Athanasios Koukounaras
- Department of Horticulture, Aristotle University of Thessaloniki, 54124, Thessaloniki, Greece; Group of Biotechnology of Pharmaceutical Plants, Laboratory of Pharmacognosy, Department of Pharmaceutical Sciences, Aristotle University of Thessaloniki, 541 24, Thessaloniki, Greece
| | - Ifigeneia Mellidou
- Institute of Plant Breeding and Genetic Resources, HAO ELGO-Demeter, 57001, Thessaloniki, Greece
| | - Efstathia Patelou
- Group of Biotechnology of Pharmaceutical Plants, Laboratory of Pharmacognosy, Department of Pharmaceutical Sciences, Aristotle University of Thessaloniki, 541 24, Thessaloniki, Greece
| | - Stefanos Kostas
- Department of Horticulture, Aristotle University of Thessaloniki, 54124, Thessaloniki, Greece; Group of Biotechnology of Pharmaceutical Plants, Laboratory of Pharmacognosy, Department of Pharmaceutical Sciences, Aristotle University of Thessaloniki, 541 24, Thessaloniki, Greece
| | - Vijaya Shukla
- Sustainable Agricultural Systems Laboratory, Agricultural Research Service, United States Department of Agriculture, Beltsville Agricultural Research Center, Beltsville, MD, USA
| | - Cawas Engineer
- Group of Biotechnology of Pharmaceutical Plants, Laboratory of Pharmacognosy, Department of Pharmaceutical Sciences, Aristotle University of Thessaloniki, 541 24, Thessaloniki, Greece; University of California San Diego, Division of Biological Sciences - Cell and Developmental Biology, 9500 Gilman Drive, La Jolla, CA, 92093, USA
| | - Dimitra Papaefthimiou
- Group of Biotechnology of Pharmaceutical Plants, Laboratory of Pharmacognosy, Department of Pharmaceutical Sciences, Aristotle University of Thessaloniki, 541 24, Thessaloniki, Greece; Laboratory of Botany, Department of Biological Sciences and Applications, University of Ioannina, Ioannina, Greece
| | - Foued Amari
- Group of Biotechnology of Pharmaceutical Plants, Laboratory of Pharmacognosy, Department of Pharmaceutical Sciences, Aristotle University of Thessaloniki, 541 24, Thessaloniki, Greece; Wexner Medical Center/GEMMC, Comprehensive Cancer Center, 970 BRT, 460 W. 12th Avenue, Columbus, OH, 43210, USA
| | - Dimitris Chatzopoulos
- Group of Biotechnology of Pharmaceutical Plants, Laboratory of Pharmacognosy, Department of Pharmaceutical Sciences, Aristotle University of Thessaloniki, 541 24, Thessaloniki, Greece
| | - Autar K Mattoo
- Sustainable Agricultural Systems Laboratory, Agricultural Research Service, United States Department of Agriculture, Beltsville Agricultural Research Center, Beltsville, MD, USA
| | - Angelos K Kanellis
- Group of Biotechnology of Pharmaceutical Plants, Laboratory of Pharmacognosy, Department of Pharmaceutical Sciences, Aristotle University of Thessaloniki, 541 24, Thessaloniki, Greece.
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10
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Papadopoulou A, Matsi T, Kamou N, Avdouli D, Mellidou I, Karamanoli K. Decoding the potential of a new Pseudomonas putida strain for inducing drought tolerance of tomato (Solanum lycopersicum) plants through seed biopriming. J Plant Physiol 2022; 271:153658. [PMID: 35245824 DOI: 10.1016/j.jplph.2022.153658] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 02/08/2022] [Accepted: 02/21/2022] [Indexed: 06/14/2023]
Abstract
A total of 11 potential plant growth promoting rhizobacteria previously isolated from naturally stressed environments were evaluated for various traits of interest for a beneficial symbiosis with plants, including colonization ability, biofilm formation, motility, exopolysaccharide production and salt tolerance. The vast majority of the strains were found to possess multiple plant growth promoting traits. Nevertheless, the intensity varied among isolates, with those originated from tomato plants being more efficient colonizers. The strain SAESo11, genetically characterized as a Pseudomonas putida member was selected for further investigation of its potential to alleviate drought stress in tomato seedlings. Inoculation with SAESo11 mitigated the negative effects of drought stress as indicated by growth and photosynthetic indices. Furthermore, bacterial inoculation enhanced H2O2 content and malondialdehyde levels in colonized plants. Drought treatment did not further alter the oxidative status of these plants. Similarly, total phenolic content and antioxidant enzyme activity were induced in plant tissues in response to drought stress only at the absence of inoculum. These results indicated that inoculation with the selected strain imposed plants at a priming state, that enabled them to respond more robustly at the exposure to drought stress and efficiently attenuated the drought-induced injury. This state of plant alertness mediated by SAESo11 occurred at no cost to growth, highlighting its role as a potential plant priming agent.
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Affiliation(s)
- Anastasia Papadopoulou
- Laboratory of Agricultural Chemistry, School of Agriculture, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Theodora Matsi
- Laboratory of Soil Science, School of Agriculture, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Nathalie Kamou
- Laboratory of Agricultural Chemistry, School of Agriculture, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Denisa Avdouli
- Laboratory of Agricultural Chemistry, School of Agriculture, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Ifigeneia Mellidou
- Institute of Plant Breeding and Genetic Resources, Hellenic Agricultural Organization DEMETER (ex NAGREF), Thermi, Greece.
| | - Katerina Karamanoli
- Laboratory of Agricultural Chemistry, School of Agriculture, Aristotle University of Thessaloniki, Thessaloniki, Greece.
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11
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Kadoglidou K, Irakli M, Boutsika A, Mellidou I, Maninis N, Sarrou E, Georgiadou V, Tourvas N, Krigas N, Moysiadis T, Grigoriadou K, Maloupa E, Xanthopoulou A, Ganopoulos I. Metabolomic Fingerprinting and Molecular Characterization of the Rock Samphire Germplasm Collection from the Balkan Botanic Garden of Kroussia, Northern Greece. Plants 2022; 11:plants11040573. [PMID: 35214906 PMCID: PMC8879136 DOI: 10.3390/plants11040573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Revised: 02/10/2022] [Accepted: 02/17/2022] [Indexed: 11/19/2022]
Abstract
The traditionally edible aerial parts of rock samphire (Crithmum maritimum L.) could be a valuable functional food or feed ingredient due to their high antioxidant capacity, ascorbic acid content, and rich content in secondary metabolites such as phenolics and flavonoids. The first objective of this study was to evaluate eighteen genotypes derived from different regions of Greece regarding the phytochemical contents of their soluble extracts in total phenolics, total flavonoids, and individual polyphenols as determined by LC-MS analysis, as well as ascorbic acid content and their antioxidant capacity as determined by different assays, including ABTS (2,2-azino-bis-3-ethylbenzothiazoline-6-sulfonic acid), DPPH (2,2-diphenyl-1-picrylhydrazyl radical scavenging activity), and FRAP (ferric reducing antioxidant power) assays. The second objective of the study was the molecular characterization of native Greek C. maritimum genotypes. Great variation among genotypes was observed in terms of the antioxidant capacity, ascorbic acid content, and phenolic compounds (total phenolic content and total flavonoid content), as well as in caffeolquinic acids and flavonoids. The principal component analysis highlighted genotypes with a higher potential in antioxidants and polyphenolics. The most promising genotypes were G9 from Kefalonia, followed by G4 from Ikaria, where both clearly exhibited a similar response with high values of evaluated traits. The molecular characterization of genotypes revealed low variability and low to moderate genetic diversity between populations. Our data indicated that the rock samphire germplasm collection from the Balkan Botanic Garden of Kroussia could serve as an important source of documented genetic material and, thus, it is suggested for further investigation to provide insight regarding cultivation and agro-processing aspects, artificial selection, or plant breeding aimed at developing C. maritimum genotypes of high-bioactive value.
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Affiliation(s)
- Kalliopi Kadoglidou
- Institute of Plant Breeding and Genetic Resources, ELGO-DIMITRA, Thermi, GR-57001 Thessaloniki, Greece; (M.I.); (A.B.); (I.M.); (N.M.); (E.S.); (V.G.); (N.T.); (N.K.); (T.M.); (K.G.); (E.M.); (A.X.)
- Correspondence: (K.K.); (I.G.)
| | - Maria Irakli
- Institute of Plant Breeding and Genetic Resources, ELGO-DIMITRA, Thermi, GR-57001 Thessaloniki, Greece; (M.I.); (A.B.); (I.M.); (N.M.); (E.S.); (V.G.); (N.T.); (N.K.); (T.M.); (K.G.); (E.M.); (A.X.)
| | - Anastasia Boutsika
- Institute of Plant Breeding and Genetic Resources, ELGO-DIMITRA, Thermi, GR-57001 Thessaloniki, Greece; (M.I.); (A.B.); (I.M.); (N.M.); (E.S.); (V.G.); (N.T.); (N.K.); (T.M.); (K.G.); (E.M.); (A.X.)
| | - Ifigeneia Mellidou
- Institute of Plant Breeding and Genetic Resources, ELGO-DIMITRA, Thermi, GR-57001 Thessaloniki, Greece; (M.I.); (A.B.); (I.M.); (N.M.); (E.S.); (V.G.); (N.T.); (N.K.); (T.M.); (K.G.); (E.M.); (A.X.)
| | - Nikolas Maninis
- Institute of Plant Breeding and Genetic Resources, ELGO-DIMITRA, Thermi, GR-57001 Thessaloniki, Greece; (M.I.); (A.B.); (I.M.); (N.M.); (E.S.); (V.G.); (N.T.); (N.K.); (T.M.); (K.G.); (E.M.); (A.X.)
| | - Eirini Sarrou
- Institute of Plant Breeding and Genetic Resources, ELGO-DIMITRA, Thermi, GR-57001 Thessaloniki, Greece; (M.I.); (A.B.); (I.M.); (N.M.); (E.S.); (V.G.); (N.T.); (N.K.); (T.M.); (K.G.); (E.M.); (A.X.)
| | - Vasiliki Georgiadou
- Institute of Plant Breeding and Genetic Resources, ELGO-DIMITRA, Thermi, GR-57001 Thessaloniki, Greece; (M.I.); (A.B.); (I.M.); (N.M.); (E.S.); (V.G.); (N.T.); (N.K.); (T.M.); (K.G.); (E.M.); (A.X.)
| | - Nikolaos Tourvas
- Institute of Plant Breeding and Genetic Resources, ELGO-DIMITRA, Thermi, GR-57001 Thessaloniki, Greece; (M.I.); (A.B.); (I.M.); (N.M.); (E.S.); (V.G.); (N.T.); (N.K.); (T.M.); (K.G.); (E.M.); (A.X.)
| | - Nikos Krigas
- Institute of Plant Breeding and Genetic Resources, ELGO-DIMITRA, Thermi, GR-57001 Thessaloniki, Greece; (M.I.); (A.B.); (I.M.); (N.M.); (E.S.); (V.G.); (N.T.); (N.K.); (T.M.); (K.G.); (E.M.); (A.X.)
| | - Theodoros Moysiadis
- Institute of Plant Breeding and Genetic Resources, ELGO-DIMITRA, Thermi, GR-57001 Thessaloniki, Greece; (M.I.); (A.B.); (I.M.); (N.M.); (E.S.); (V.G.); (N.T.); (N.K.); (T.M.); (K.G.); (E.M.); (A.X.)
- Department of Computer Science, School of Sciences and Engineering, University of Nicosia, Nicosia 2417, Cyprus
| | - Katerina Grigoriadou
- Institute of Plant Breeding and Genetic Resources, ELGO-DIMITRA, Thermi, GR-57001 Thessaloniki, Greece; (M.I.); (A.B.); (I.M.); (N.M.); (E.S.); (V.G.); (N.T.); (N.K.); (T.M.); (K.G.); (E.M.); (A.X.)
| | - Eleni Maloupa
- Institute of Plant Breeding and Genetic Resources, ELGO-DIMITRA, Thermi, GR-57001 Thessaloniki, Greece; (M.I.); (A.B.); (I.M.); (N.M.); (E.S.); (V.G.); (N.T.); (N.K.); (T.M.); (K.G.); (E.M.); (A.X.)
| | - Aliki Xanthopoulou
- Institute of Plant Breeding and Genetic Resources, ELGO-DIMITRA, Thermi, GR-57001 Thessaloniki, Greece; (M.I.); (A.B.); (I.M.); (N.M.); (E.S.); (V.G.); (N.T.); (N.K.); (T.M.); (K.G.); (E.M.); (A.X.)
| | - Ioannis Ganopoulos
- Institute of Plant Breeding and Genetic Resources, ELGO-DIMITRA, Thermi, GR-57001 Thessaloniki, Greece; (M.I.); (A.B.); (I.M.); (N.M.); (E.S.); (V.G.); (N.T.); (N.K.); (T.M.); (K.G.); (E.M.); (A.X.)
- Correspondence: (K.K.); (I.G.)
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12
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Abstract
In the forthcoming era of climate change and ecosystem degradation, fostering the use of beneficial microbiota in agroecosystems represents a major challenge toward sustainability. Some plant-associated bacteria, called Plant Growth Promoting Rhizobacteria (PGPR), may confer growth-promoting advantages to the plant host, through enhancing nutrient uptake, altering hormone homeostasis, and/or improving tolerance to abiotic stress factors and phytopathogens. In this regard, exploring the key ecological and evolutionary interactions between plants and their microbiomes is perquisite to develop innovative approaches and novel natural products that will complement conventional farming techniques. Recently, details of the molecular aspects of PGPR-mediated tolerance to various stress factors have come to light. At the same time the integration of the recent advances in the field of plant-microbiome crosstalk with novel -omic approaches will soon allow us to develop a holistic approach to “prime” plants against unfavorable environments. This mini review highlights the current state of the art on seed biopriming, focusing on the identification and application of novel PGPR in cultivated plant species under conditions where crop productivity is limited. The potential challenges of commercializing these PGPR as biostimulants to improve crop production under multiple environmental constraints of plant growth, as well as concerns about PGPR application and their impact on ecosystems, are also discussed.
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13
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Xanthopoulou A, Montero-Pau J, Picó B, Boumpas P, Tsaliki E, Paris HS, Tsaftaris A, Kalivas A, Mellidou I, Ganopoulos I. A comprehensive RNA-Seq-based gene expression atlas of the summer squash (Cucurbita pepo) provides insights into fruit morphology and ripening mechanisms. BMC Genomics 2021; 22:341. [PMID: 33980145 PMCID: PMC8114506 DOI: 10.1186/s12864-021-07683-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Accepted: 05/04/2021] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Summer squash (Cucurbita pepo: Cucurbitaceae) are a popular horticultural crop for which there is insufficient genomic and transcriptomic information. Gene expression atlases are crucial for the identification of genes expressed in different tissues at various plant developmental stages. Here, we present the first comprehensive gene expression atlas for a summer squash cultivar, including transcripts obtained from seeds, shoots, leaf stem, young and developed leaves, male and female flowers, fruits of seven developmental stages, as well as primary and lateral roots. RESULTS In total, 27,868 genes and 2352 novel transcripts were annotated from these 16 tissues, with over 18,000 genes common to all tissue groups. Of these, 3812 were identified as housekeeping genes, half of which assigned to known gene ontologies. Flowers, seeds, and young fruits had the largest number of specific genes, whilst intermediate-age fruits the fewest. There also were genes that were differentially expressed in the various tissues, the male flower being the tissue with the most differentially expressed genes in pair-wise comparisons with the remaining tissues, and the leaf stem the least. The largest expression change during fruit development was early on, from female flower to fruit two days after pollination. A weighted correlation network analysis performed on the global gene expression dataset assigned 25,413 genes to 24 coexpression groups, and some of these groups exhibited strong tissue specificity. CONCLUSIONS These findings enrich our understanding about the transcriptomic events associated with summer squash development and ripening. This comprehensive gene expression atlas is expected not only to provide a global view of gene expression patterns in all major tissues in C. pepo but to also serve as a valuable resource for functional genomics and gene discovery in Cucurbitaceae.
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Affiliation(s)
- Aliki Xanthopoulou
- Institute of Plant Breeding and Genetic Resources, Hellenic Agricultural Organization DIMITRA (ex NAGREF), GR-57001 Thermi, Macedonia Greece
| | - Javier Montero-Pau
- Cavanilles Institute of Biodiversity and Evolutionary Biology (ICBiBE), Universitat de València, 46022 Valencia, Spain
| | - Belén Picó
- Institute for the Conservation and Breeding of Agricultural Biodiversity (COMAV-UPV), Universitat Politècnica de València, Camino de Vera s/n, 46022 Valencia, Spain
| | - Panagiotis Boumpas
- Institute of Plant Breeding and Genetic Resources, Hellenic Agricultural Organization DIMITRA (ex NAGREF), GR-57001 Thermi, Macedonia Greece
| | - Eleni Tsaliki
- Institute of Plant Breeding and Genetic Resources, Hellenic Agricultural Organization DIMITRA (ex NAGREF), GR-57001 Thermi, Macedonia Greece
| | - Harry S. Paris
- Department of Vegetable Crops and Plant Genetics, Agricultural Research Organization, Newe Ya‘ar Research Center, 3009500 Ramat Yishay, Israel
| | | | - Apostolos Kalivas
- Institute of Plant Breeding and Genetic Resources, Hellenic Agricultural Organization DIMITRA (ex NAGREF), GR-57001 Thermi, Macedonia Greece
| | - Ifigeneia Mellidou
- Institute of Plant Breeding and Genetic Resources, Hellenic Agricultural Organization DIMITRA (ex NAGREF), GR-57001 Thermi, Macedonia Greece
| | - Ioannis Ganopoulos
- Institute of Plant Breeding and Genetic Resources, Hellenic Agricultural Organization DIMITRA (ex NAGREF), GR-57001 Thermi, Macedonia Greece
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14
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Mellidou I, Koukounaras A, Kostas S, Patelou E, Kanellis AK. Regulation of Vitamin C Accumulation for Improved Tomato Fruit Quality and Alleviation of Abiotic Stress. Genes (Basel) 2021; 12:genes12050694. [PMID: 34066421 PMCID: PMC8148108 DOI: 10.3390/genes12050694] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Revised: 05/01/2021] [Accepted: 05/02/2021] [Indexed: 12/23/2022] Open
Abstract
Ascorbic acid (AsA) is an essential multifaceted phytonutrient for both the human diet and plant growth. Optimum levels of AsA accumulation combined with balanced redox homeostasis are required for normal plant development and defense response to adverse environmental stimuli. Notwithstanding its moderate AsA levels, tomatoes constitute a good source of vitamin C in the human diet. Therefore, the enhancement of AsA levels in tomato fruit attracts considerable attention, not only to improve its nutritional value but also to stimulate stress tolerance. Genetic regulation of AsA concentrations in plants can be achieved through the fine-tuning of biosynthetic, recycling, and transport mechanisms; it is also linked to changes in the whole fruit metabolism. Emerging evidence suggests that tomato synthesizes AsA mainly through the l-galactose pathway, but alternative pathways through d-galacturonate or myo-inositol, or seemingly unrelated transcription and regulatory factors, can be also relevant in certain developmental stages or in response to abiotic factors. Considering the recent advances in our understanding of AsA regulation in model and other non-model species, this review attempts to link the current consensus with novel technologies to provide a comprehensive strategy for AsA enhancement in tomatoes, without any detrimental effect on plant growth or fruit development.
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Affiliation(s)
- Ifigeneia Mellidou
- Institute of Plant Breeding and Genetic Resources, Hao Elgo-Demeter, 57001 Thessaloniki, Greece
- Correspondence: (I.M.); (A.K.K.)
| | - Athanasios Koukounaras
- Department of Horticulture, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; (A.K.); (S.K.)
| | - Stefanos Kostas
- Department of Horticulture, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; (A.K.); (S.K.)
| | - Efstathia Patelou
- Laboratory of Pharmacognosy, Group of Biotechnology of Pharmaceutical Plants, Department of Pharmaceutical Sciences, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece;
| | - Angelos K. Kanellis
- Laboratory of Pharmacognosy, Group of Biotechnology of Pharmaceutical Plants, Department of Pharmaceutical Sciences, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece;
- Correspondence: (I.M.); (A.K.K.)
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15
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Mellidou I, Ainalidou A, Papadopoulou A, Leontidou K, Genitsaris S, Karagiannis E, Van de Poel B, Karamanoli K. Comparative Transcriptomics and Metabolomics Reveal an Intricate Priming Mechanism Involved in PGPR-Mediated Salt Tolerance in Tomato. Front Plant Sci 2021; 12:713984. [PMID: 34484277 PMCID: PMC8416046 DOI: 10.3389/fpls.2021.713984] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Accepted: 07/01/2021] [Indexed: 05/21/2023]
Abstract
Plant-associated beneficial strains inhabiting plants grown under harsh ecosystems can help them cope with abiotic stress factors by positively influencing plant physiology, development, and environmental adaptation. Previously, we isolated a potential plant growth promoting strain (AXSa06) identified as Pseudomonas oryzihabitans, possessing 1-aminocyclopropane-1-carboxylate deaminase activity, producing indole-3-acetic acid and siderophores, as well as solubilizing inorganic phosphorus. In this study, we aimed to further evaluate the effects of AXSa06 seed inoculation on the growth of tomato seedlings under excess salt (200 mM NaCl) by deciphering their transcriptomic and metabolomic profiles. Differences in transcript levels and metabolites following AXSa06 inoculation seem likely to have contributed to the observed difference in salt adaptation of inoculated plants. In particular, inoculations exerted a positive effect on plant growth and photosynthetic parameters, imposing plants to a primed state, at which they were able to respond more robustly to salt stress probably by efficiently activating antioxidant metabolism, by dampening stress signals, by detoxifying Na+, as well as by effectively assimilating carbon and nitrogen. The primed state of AXSa06-inoculated plants is supported by the increased leaf lipid peroxidation, ascorbate content, as well as the enhanced activities of antioxidant enzymes, prior to stress treatment. The identified signatory molecules of AXSa06-mediated salt tolerance included the amino acids aspartate, threonine, serine, and glutamate, as well as key genes related to ethylene or abscisic acid homeostasis and perception, and ion antiporters. Our findings represent a promising sustainable solution to improve agricultural production under the forthcoming climate change conditions.
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Affiliation(s)
- Ifigeneia Mellidou
- Institute of Plant Breeding and Genetic Resources, Hellenic Agricultural Organization DEMETER (ex NAGREF), Thermi, Greece
- *Correspondence: Ifigeneia Mellidou
| | - Aggeliki Ainalidou
- Laboratory of Agricultural Chemistry, School of Agriculture, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Anastasia Papadopoulou
- Laboratory of Agricultural Chemistry, School of Agriculture, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Kleopatra Leontidou
- Laboratory of Agricultural Chemistry, School of Agriculture, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Savvas Genitsaris
- Section of Ecology and Taxonomy, School of Biology, National and Kapodistrian University of Athens, Athens, Greece
| | - Evangelos Karagiannis
- Laboratory of Pomology, Department of Horticulture, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Bram Van de Poel
- Division of Crop Biotechnics, Department of Biosystems, University of Leuven, Leuven, Belgium
| | - Katerina Karamanoli
- Laboratory of Agricultural Chemistry, School of Agriculture, Aristotle University of Thessaloniki, Thessaloniki, Greece
- Katerina Karamanoli
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16
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Chatzopoulou F, Sanmartin M, Mellidou I, Pateraki I, Koukounaras A, Tanou G, Kalamaki MS, Veljović-Jovanović S, Antić TC, Kostas S, Tsouvaltzis P, Grumet R, Kanellis AK. Silencing of ascorbate oxidase results in reduced growth, altered ascorbic acid levels and ripening pattern in melon fruit. Plant Physiol Biochem 2020; 156:291-303. [PMID: 32987259 DOI: 10.1016/j.plaphy.2020.08.040] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Revised: 08/22/2020] [Accepted: 08/22/2020] [Indexed: 06/11/2023]
Abstract
Ascorbate oxidase (AO, EC 1.10.3.3) is a copper-containing enzyme localized at the apoplast, where it catalyzes the oxidation of ascorbic acid (AA) to dehydroascorbic acid (DHA) via monodehydroascorbic acid (MDHA) intermediate. Despite it has been extensively studied, no biological roles have been definitively ascribed. To understand the role of AO in plant metabolism, fruit growth and physiology, we suppressed AO expression in melon (Cucumis melo L.) fruit. Reduction of AO activity increased AA content in melon fruit, which is the result of repression of AA oxidation and simultaneous induction of certain biosynthetic and recycling genes. As a consequence, ascorbate redox state was altered in the apoplast. Interestingly, transgenic melon fruit displayed increased ethylene production rate coincided with elevated levels of 1-aminocyclopropane-1-carboxylic acid (ACC) oxidase (ACO, EC 1.14.17.4) activity and gene expression, which might contribute to earlier ripening. Moreover, AO suppressed transgenic melon fruit exhibited a dramatic arrest in fruit growth, due to a simultaneous decrease in fruit cell size and in plasmalemma (PM) ATPase activity. All the above, support for the first time, the in vivo AO participation in the rapid fruit growth of Cucurbitaceae and further suggest an alternative route for AA increase in ripening fruit.
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Affiliation(s)
- Fani Chatzopoulou
- Group of Biotechnology of Pharmaceutical Plants, Laboratory of Pharmacognosy, Department of Pharmaceutical Sciences, Aristotle University of Thessaloniki, 541 24, Thessaloniki, Greece; Laboratory of Microbiology, School of Medicine, Aristotle University of Thessaloniki, 541 24, Thessaloniki, Greece
| | - Maite Sanmartin
- Group of Biotechnology of Pharmaceutical Plants, Laboratory of Pharmacognosy, Department of Pharmaceutical Sciences, Aristotle University of Thessaloniki, 541 24, Thessaloniki, Greece; Instituto de Biología Molecular y Celular de Plantas (IBMCP), Universidad Politécnica de Valencia (UPV)-Consejo Superior de Investigaciones Científicas (CSIC), Ciudad Politécnica de la Innovación, Ed. 8E, Ingeniero Fausto Elio s/n, Valencia, Spain.
| | - Ifigeneia Mellidou
- Institute of Plant Breeding and Genetic Resources, HAO ELGO-DEMETER. Thermi, Thessaloniki, 57 001, Greece
| | - Irini Pateraki
- Group of Biotechnology of Pharmaceutical Plants, Laboratory of Pharmacognosy, Department of Pharmaceutical Sciences, Aristotle University of Thessaloniki, 541 24, Thessaloniki, Greece; Department of Plant and Environmental Sciences, Faculty of Science, University of Copenhagen, Thorvaldsensvej 40, 1871, Copenhagen, Denmark
| | - Athanasios Koukounaras
- School of Agriculture, Aristotle University of Thessaloniki, 541 24, Thessaloniki, Greece
| | - Georgia Tanou
- Institute of Soil and Water Resources, HAO ELGO-DEMETER. Thermi, Thessaloniki, 57 001, Greece
| | - Mary S Kalamaki
- Group of Biotechnology of Pharmaceutical Plants, Laboratory of Pharmacognosy, Department of Pharmaceutical Sciences, Aristotle University of Thessaloniki, 541 24, Thessaloniki, Greece; Division of Science & Technology, American College of Thessaloniki, 17 Sevenidi Street, 55510, Thessaloniki, Greece
| | - Sonja Veljović-Jovanović
- University of Belgrade -Department of Life Sciences, Institute for Multidisciplinary Research, 11000, Belgrade, Serbia
| | - Tijana Cvetić Antić
- University of Belgrade - Faculty of Biology, Studenski Trg 16, 11000, Belgrade, Serbia
| | - Stefanos Kostas
- School of Agriculture, Aristotle University of Thessaloniki, 541 24, Thessaloniki, Greece
| | - Pavlos Tsouvaltzis
- School of Agriculture, Aristotle University of Thessaloniki, 541 24, Thessaloniki, Greece
| | - Rebecca Grumet
- Department of Horticulture, Plant and Soil Sciences Building, Michigan State University, East Lansing, MI, 48824, USA
| | - Angelos K Kanellis
- Group of Biotechnology of Pharmaceutical Plants, Laboratory of Pharmacognosy, Department of Pharmaceutical Sciences, Aristotle University of Thessaloniki, 541 24, Thessaloniki, Greece.
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17
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Genitsaris S, Stefanidou N, Leontidou K, Matsi T, Karamanoli K, Mellidou I. Bacterial Communities in the Rhizosphere and Phyllosphere of Halophytes and Drought-Tolerant Plants in Mediterranean Ecosystems. Microorganisms 2020; 8:E1708. [PMID: 33142812 PMCID: PMC7692439 DOI: 10.3390/microorganisms8111708] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Revised: 10/29/2020] [Accepted: 10/30/2020] [Indexed: 12/23/2022] Open
Abstract
The aim of the study was to investigate the bacterial community diversity and structure by means of 16S rRNA gene high-throughput amplicon sequencing, in the rhizosphere and phyllosphere of halophytes and drought-tolerant plants in Mediterranean ecosystems with different soil properties. The locations of the sampled plants included alkaline, saline-sodic soils, acidic soils, and the volcanic soils of Santorini Island, differing in soil fertility. Our results showed high bacterial richness overall with Proteobacteria and Actinobacteria dominating in terms of OTUs number and indicated that variable bacterial communities differed depending on the plant's compartment (rhizosphere and phyllosphere), the soil properties and location of sampling. Furthermore, a shared pool of generalist bacterial taxa was detected independently of sampling location, plant species, or plant compartment. We conclude that the rhizosphere and phyllosphere of native plants in stressed Mediterranean ecosystems consist of common bacterial assemblages contributing to the survival of the plant, while at the same time the discrete soil properties and environmental pressures of each habitat drive the development of a complementary bacterial community with a distinct structure for each plant and location. We suggest that this trade-off between generalist and specialist bacterial community is tailored to benefit the symbiosis with the plant.
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Affiliation(s)
- Savvas Genitsaris
- Department of Ecology, School of Biology, Aristotle University of Thessaloniki, 54 124 Thessaloniki, Greece
| | - Natassa Stefanidou
- Department of Botany, School of Biology, Aristotle University of Thessaloniki, 54 124 Thessaloniki, Greece
| | - Kleopatra Leontidou
- Laboratory of Agricultural Chemistry, School of Agriculture, Aristotle University of Thessaloniki, 54 124 Thessaloniki, Greece
| | - Theodora Matsi
- Soil Science Laboratory, School of Agriculture, Aristotle University of Thessaloniki, 54 124 Thessaloniki, Greece
| | - Katerina Karamanoli
- Laboratory of Agricultural Chemistry, School of Agriculture, Aristotle University of Thessaloniki, 54 124 Thessaloniki, Greece
| | - Ifigeneia Mellidou
- Laboratory of Agricultural Chemistry, School of Agriculture, Aristotle University of Thessaloniki, 54 124 Thessaloniki, Greece
- Institute of Plant Breeding and Genetic Resources, HAO ELGO-DEMETER, 57 001 Thermi, Greece
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18
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Leontidou K, Genitsaris S, Papadopoulou A, Kamou N, Bosmali I, Matsi T, Madesis P, Vokou D, Karamanoli K, Mellidou I. Plant growth promoting rhizobacteria isolated from halophytes and drought-tolerant plants: genomic characterisation and exploration of phyto-beneficial traits. Sci Rep 2020; 10:14857. [PMID: 32908201 PMCID: PMC7481233 DOI: 10.1038/s41598-020-71652-0] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Accepted: 08/17/2020] [Indexed: 01/25/2023] Open
Abstract
Plant growth promoting rhizobacteria (PGPR) are able to provide cross-protection against multiple stress factors and facilitate growth of their plant symbionts in many ways. The aim of this study was to isolate and characterize rhizobacterial strains under natural conditions, associated with naturally occurring representatives of wild plant species and a local tomato cultivar, growing in differently stressed Mediterranean ecosystems. A total of 85 morphologically different rhizospheric strains were isolated; twenty-five exhibited multiple in vitro PGP-associated traits, including phosphate solubilization, indole-3-acetic acid production, and 1-aminocyclopropane-1-carboxylate deaminase activity. Whole genome analysis was applied to eight selected strains for their PGP potential and assigned seven strains to Gammaproteobacteria, and one to Bacteroidetes. The genomes harboured numerous genes involved in plant growth promotion and stress regulation. They also support the notion that the presence of gene clusters with potential PGP functions is affirmative but not necessary for a strain to promote plant growth under abiotic stress conditions. The selected strains were further tested for their ability to stimulate growth under stress. This initial screening led to the identification of some strains as potential PGPR for increasing crop production in a sustainable manner.
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Affiliation(s)
- Kleopatra Leontidou
- Laboratory of Agricultural Chemistry, School of Agriculture, Aristotle University of Thessaloniki, 54124, Thessaloniki, Greece
| | - Savvas Genitsaris
- International Hellenic University, 57001, Thermi, Greece.,Department of Ecology, School of Biology, Aristotle University of Thessaloniki, 54124, Thessaloniki, Greece
| | - Anastasia Papadopoulou
- Laboratory of Agricultural Chemistry, School of Agriculture, Aristotle University of Thessaloniki, 54124, Thessaloniki, Greece
| | - Nathalie Kamou
- Laboratory of Agricultural Chemistry, School of Agriculture, Aristotle University of Thessaloniki, 54124, Thessaloniki, Greece
| | - Irene Bosmali
- Institute of Applied Biosciences, CERTH, 57001, Thessaloniki, Greece
| | - Theodora Matsi
- Soil Science Laboratory, School of Agriculture, Aristotle University of Thessaloniki, 54124, Thessaloniki, Greece
| | | | - Despoina Vokou
- Department of Ecology, School of Biology, Aristotle University of Thessaloniki, 54124, Thessaloniki, Greece
| | - Katerina Karamanoli
- Laboratory of Agricultural Chemistry, School of Agriculture, Aristotle University of Thessaloniki, 54124, Thessaloniki, Greece.
| | - Ifigeneia Mellidou
- Laboratory of Agricultural Chemistry, School of Agriculture, Aristotle University of Thessaloniki, 54124, Thessaloniki, Greece. .,Institute of Plant Breeding and Genetic Resources, HAO, 57001, Thermi, Thessaloniki, Greece.
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19
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Mellidou I, Karamanoli K, Constantinidou HIA, Roubelakis-Angelakis KA. Antisense-mediated S-adenosyl-L-methionine decarboxylase silencing affects heat stress responses of tobacco plants. Funct Plant Biol 2020; 47:651-658. [PMID: 32375995 DOI: 10.1071/fp19350] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2019] [Accepted: 02/20/2020] [Indexed: 05/14/2023]
Abstract
Understanding the molecular mode(s) of plant tolerance to heat stress (HS) is crucial since HS is a potential threat to sustainable agriculture and global crop production. Polyamines (PAs) seem to exert multifaceted effects in plant growth and development and responses to abiotic and biotic stresses, presumably via their homeostasis, chemical interactions and contribution to hydrogen peroxide (H2O2) cellular 'signatures'. Downregulation of the apoplastic POLYAMINE OXIDASE (PAO) gene improved thermotolerance in tobacco (Nicotiana tabacum L.) transgenics. However, in the present work we show that transgenic tobacco plants with antisense-mediated S-ADENOSYL-L-METHIONINE DECARBOXYLASE silencing (AS-NtSAMDC) exhibited enhanced sensitivity and delayed responses to HS which was accompanied by profound injury upon HS removal (recovery), as assessed by phenological, physiological and biochemical characteristics. In particular, the AS-NtSAMDC transgenics exhibited significantly reduced rate of photosynthesis, as well as enzymatic and non-enzymatic antioxidants. These transgenics suffered irreversible damage, which significantly reduced their growth potential upon return to normal conditions. These data reinforce the contribution of increased PA homeostasis to tolerance, and can move forward our understanding on the PA-mediated mechanism(s) conferring tolerance to HS that might be targeted via traditional or biotechnological breeding for developing HS tolerant plants.
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Affiliation(s)
- Ifigeneia Mellidou
- School of Agriculture, Aristotle University, 54124 Thessaloniki, Greece; and Institute of Plant Breeding and Genetic Resources - HAO DEMETER, 57001 Thessaloniki, Greece; and Corresponding author.
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20
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Xanthopoulou A, Montero-Pau J, Mellidou I, Kissoudis C, Blanca J, Picó B, Tsaballa A, Tsaliki E, Dalakouras A, Paris HS, Ganopoulou M, Moysiadis T, Osathanunkul M, Tsaftaris A, Madesis P, Kalivas A, Ganopoulos I. Whole-genome resequencing of Cucurbita pepo morphotypes to discover genomic variants associated with morphology and horticulturally valuable traits. Hortic Res 2019; 6:94. [PMID: 31645952 PMCID: PMC6804688 DOI: 10.1038/s41438-019-0176-9] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Revised: 06/18/2019] [Accepted: 06/19/2019] [Indexed: 05/20/2023]
Abstract
Cucurbita pepo contains two cultivated subspecies, each of which encompasses four fruit-shape morphotypes (cultivar groups). The Pumpkin, Vegetable Marrow, Cocozelle, and Zucchini Groups are of subsp. pepo and the Acorn, Crookneck, Scallop, and Straightneck Groups are of subsp. ovifera. Recently, a de novo assembly of the C. pepo subsp. pepo Zucchini genome was published, providing insights into its evolution. To expand our knowledge of evolutionary processes within C. pepo and to identify variants associated with particular morphotypes, we performed whole-genome resequencing of seven of these eight C. pepo morphotypes. We report for the first time whole-genome resequencing of the four subsp. pepo (Pumpkin, Vegetable Marrow, Cocozelle, green Zucchini, and yellow Zucchini) morphotypes and three of the subsp. ovifera (Acorn, Crookneck, and Scallop) morphotypes. A high-depth resequencing approach was followed, using the BGISEQ-500 platform that enables the identification of rare variants, with an average of 33.5X. Approximately 94.5% of the clean reads were mapped against the reference Zucchini genome. In total, 3,823,977 high confidence single-nucleotide polymorphisms (SNPs) were identified. Within each accession, SNPs varied from 636,918 in green Zucchini to 2,656,513 in Crookneck, and were distributed homogeneously along the chromosomes. Clear differences between subspecies pepo and ovifera in genetic variation and linkage disequilibrium are highlighted. In fact, comparison between subspecies pepo and ovifera indicated 5710 genes (22.5%) with Fst > 0.80 and 1059 genes (4.1%) with Fst = 1.00 as potential candidate genes that were fixed during the independent evolution and domestication of the two subspecies. Linkage disequilibrium was greater in subsp. ovifera than in subsp. pepo, perhaps reflective of the earlier differentiation of morphotypes within subsp. ovifera. Some morphotype-specific genes have been localized. Our results offer new clues that may provide an improved understanding of the underlying genomic regions involved in the independent evolution and domestication of the two subspecies. Comparisons among SNPs unique to particular subspecies or morphotypes may provide candidate genes responsible for traits of high economic importance.
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Affiliation(s)
- Aliki Xanthopoulou
- Department of Genetics and Plant Breeding, Aristotle University of Thessaloniki, Thessaloniki, 54124 Greece
| | - Javier Montero-Pau
- Department of Biochemistry and Molecular Biology, Universitat de València, 46022 Valencia, Spain
| | - Ifigeneia Mellidou
- Institute of Plant Breeding and Genetic Resources, Hellenic Agricultural Organization DEMETER (ex NAGREF), Thermi, Macedonia 57001 Greece
| | | | - José Blanca
- Institute for the Conservation and Breeding of Agricultural Biodiversity (COMAV-UPV), Universitat Politècnica de València, Camino de Vera s/n, 46022 Valencia, Spain
| | - Belén Picó
- Institute for the Conservation and Breeding of Agricultural Biodiversity (COMAV-UPV), Universitat Politècnica de València, Camino de Vera s/n, 46022 Valencia, Spain
| | - Aphrodite Tsaballa
- Institute of Plant Breeding and Genetic Resources, Hellenic Agricultural Organization DEMETER (ex NAGREF), Thermi, Macedonia 57001 Greece
| | - Eleni Tsaliki
- Institute of Plant Breeding and Genetic Resources, Hellenic Agricultural Organization DEMETER (ex NAGREF), Thermi, Macedonia 57001 Greece
| | - Athanasios Dalakouras
- Institute of Plant Breeding and Genetic Resources, Hellenic Agricultural Organization DEMETER (ex NAGREF), Thermi, Macedonia 57001 Greece
| | - Harry S. Paris
- Department of Vegetable Crops and Plant Genetics, Agricultural Research Organization, Newe Ya’ar Research Center, Ramat Yishay, Israel
| | - Maria Ganopoulou
- Institute of Plant Breeding and Genetic Resources, Hellenic Agricultural Organization DEMETER (ex NAGREF), Thermi, Macedonia 57001 Greece
| | - Theodoros Moysiadis
- Institute of Applied Biosciences (INAB), CERTH, Thermi-Thessaloniki, 57001 Greece
| | - Maslin Osathanunkul
- Department of Biology, Faculty of Science Chiang Mai University, Chiang Mai, Thailand
- Center of Excellence in Bioresources for Agriculture, Industry and MedicineChiang Mai University, Chiang Mai, Thailand
| | | | - Panagiotis Madesis
- Institute of Applied Biosciences (INAB), CERTH, Thermi-Thessaloniki, 57001 Greece
| | - Apostolos Kalivas
- Institute of Plant Breeding and Genetic Resources, Hellenic Agricultural Organization DEMETER (ex NAGREF), Thermi, Macedonia 57001 Greece
| | - Ioannis Ganopoulos
- Institute of Plant Breeding and Genetic Resources, Hellenic Agricultural Organization DEMETER (ex NAGREF), Thermi, Macedonia 57001 Greece
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21
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Manganaris GA, Goulas V, Mellidou I, Drogoudi P. Antioxidant Phytochemicals in Fresh Produce: Exploitation of Genotype Variation and Advancements in Analytical Protocols. Front Chem 2018; 5:95. [PMID: 29468146 PMCID: PMC5807909 DOI: 10.3389/fchem.2017.00095] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2017] [Accepted: 10/24/2017] [Indexed: 01/27/2023] Open
Abstract
Horticultural commodities (fruit and vegetables) are the major dietary source of several bioactive compounds of high nutraceutical value for humans, including polyphenols, carotenoids and vitamins. The aim of the current review was dual. Firstly, toward the eventual enhancement of horticultural crops with bio-functional compounds, the natural genetic variation in antioxidants found in different species and cultivars/genotypes is underlined. Notably, some landraces and/or traditional cultivars have been characterized by substantially higher phytochemical content, i.e., small tomato of Santorini island (cv. "Tomataki Santorinis") possesses appreciably high amounts of ascorbic acid (AsA). The systematic screening of key bioactive compounds in a wide range of germplasm for the identification of promising genotypes and the restoration of key gene fractions from wild species and landraces may help in reducing the loss of agro-biodiversity, creating a healthier "gene pool" as the basis of future adaptation. Toward this direction, large scale comparative studies in different cultivars/genotypes of a given species provide useful insights about the ones of higher nutritional value. Secondly, the advancements in the employment of analytical techniques to determine the antioxidant potential through a convenient, easy and fast way are outlined. Such analytical techniques include electron paramagnetic resonance (EPR) and infrared (IR) spectroscopy, electrochemical, and chemometric methods, flow injection analysis (FIA), optical sensors, and high resolution screening (HRS). Taking into consideration that fruits and vegetables are complex mixtures of water- and lipid-soluble antioxidants, the exploitation of chemometrics to develop "omics" platforms (i.e., metabolomics, foodomics) is a promising tool for researchers to decode and/or predict antioxidant activity of fresh produce. For industry, the use of optical sensors and IR spectroscopy is recommended to estimate the antioxidant activity rapidly and at low cost, although legislation does not allow its correlation with health claims.
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Affiliation(s)
- George A. Manganaris
- Department of Agricultural Sciences, Biotechnology and Food Science, Cyprus University of Technology, Lemesos, Cyprus
| | - Vlasios Goulas
- Department of Agricultural Sciences, Biotechnology and Food Science, Cyprus University of Technology, Lemesos, Cyprus
| | - Ifigeneia Mellidou
- Hellenic Agricultural Organization ‘Demeter’, Institute of Plant Breeding and Genetic Resources, Thessaloniki, Greece
| | - Pavlina Drogoudi
- Hellenic Agricultural Organization ‘Demeter’, Department of Deciduous Fruit Trees, Institute of Plant Breeding and Genetic Resources, Naoussa, Greece
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22
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Mellidou I, Karamanoli K, Beris D, Haralampidis K, Constantinidou HIA, Roubelakis-Angelakis KA. Underexpression of apoplastic polyamine oxidase improves thermotolerance in Nicotiana tabacum. J Plant Physiol 2017; 218:171-174. [PMID: 28886452 DOI: 10.1016/j.jplph.2017.08.006] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2017] [Revised: 07/07/2017] [Accepted: 08/18/2017] [Indexed: 05/23/2023]
Abstract
Polyamines (PAs) and hydrogen peroxide (H2O2), the product of PA oxidation by polyamine oxidase (PAO), are potential players affecting plant growth, development and responses to abiotic/biotic stresses. Genetically modified Nicotiana tabacum plants with altered PA/H2O2 homeostasis due to over/underexpression of the ZmPAO gene (S-ZmPAO/AS-ZmPAO, respectively) were assessed under heat stress (HS). Underexpression of ZmPAO correlates with increased thermotolerance of the photosynthetic machinery and improved biomass accumulation, accompanied by enhanced levels of the enzymatic and non-enzymatic antioxidants, whereas ZmPAO overexpressors exhibit significant impairment of thermotolerance. These data provide important clues on PA catabolism/H2O2/thermotolerance, which merit further exploitation.
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Affiliation(s)
| | | | - Despoina Beris
- Department of Biology, National and Kapodistrian University of Athens, University Campus, Ilisia, 15784 Athens, Greece
| | - Kosmas Haralampidis
- Department of Biology, National and Kapodistrian University of Athens, University Campus, Ilisia, 15784 Athens, Greece
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23
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Abstract
Ascorbic acid (AsA) is an essential compound present in almost all living organisms that has important functions in several aspects of plant growth and development, hormone signaling, as well as stress defense networks. In recent years, the genetic regulation of AsA metabolic pathways has received much attention due to its beneficial role in human diet. Despite the great variability within species, genotypes, tissues and developmental stages, AsA accumulation is considered to be controlled by the fine orchestration of net biosynthesis, recycling, degradation/oxidation, and/or intercellular and intracellular transport. To date, several structural genes from the AsA metabolic pathways and transcription factors are considered to significantly affect AsA in plant tissues, either at the level of activity, transcription or translation via feedback inhibition. Yet, all the emerging studies support the notion that the steps proceeding through GDP-L-galactose phosphorylase and to a lesser extent through GDP-D-mannose-3,5-epimerase are control points in governing AsA pool size in several species. In this mini review, we discuss the current consensus of the genetic regulation of AsA biosynthesis and recycling, with a focus on horticultural crops. The aspects of AsA degradation and transport are not discussed herein. Novel insights of how this multifaceted trait is regulated are critical to prioritize candidate genes for follow-up studies toward improving the nutritional value of fruits and vegetables.
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Affiliation(s)
- Ifigeneia Mellidou
- Group of Biotechnology of Pharmaceutical Plants, Laboratory of Pharmacognosy, Department of Pharmaceutical Sciences, Aristotle University of ThessalonikiThessaloniki, Greece.,Laboratory of Agricultural Chemistry, Department of Crop Science, School of Agriculture, Aristotle University of ThessalonikiThessaloniki, Greece
| | - Angelos K Kanellis
- Group of Biotechnology of Pharmaceutical Plants, Laboratory of Pharmacognosy, Department of Pharmaceutical Sciences, Aristotle University of ThessalonikiThessaloniki, Greece
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24
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Mellidou I, Moschou PN, Ioannidis NE, Pankou C, Gėmes K, Valassakis C, Andronis EA, Beris D, Haralampidis K, Roussis A, Karamanoli A, Matsi T, Kotzabasis K, Constantinidou HI, Roubelakis-Angelakis KA. Silencing S-Adenosyl-L-Methionine Decarboxylase (SAMDC) in Nicotiana tabacum Points at a Polyamine-Dependent Trade-Off between Growth and Tolerance Responses. Front Plant Sci 2016; 7:379. [PMID: 27064210 PMCID: PMC4814703 DOI: 10.3389/fpls.2016.00379] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2015] [Accepted: 03/11/2016] [Indexed: 05/02/2023]
Abstract
Polyamines (PAs) are nitrogenous molecules that are indispensable for cell viability and with an agreed-on role in the modulation of stress responses. Tobacco plants with downregulated SAMDC (AS-SAMDC) exhibit reduced PAs synthesis but normal levels of PA catabolism. We used AS-SAMDC to increase our understanding on the role of PAs in stress responses. Surprisingly, at control conditions AS-SAMDC plants showed increased biomass and altered developmental characteristics, such as increased height and leaf number. On the contrary, during salt stress AS-SAMDC plants showed reduced vigor when compared to the WT. During salt stress, the AS-SAMDC plants although showing compensatory readjustments of the antioxidant machinery and of photosynthetic apparatus, they failed to sustain their vigor. AS-SAMDC sensitivity was accompanied by inability to effectively control H2O2 levels and concentrations of monovalent and divalent cations. In accordance with these findings, we suggest that PAs may regulate the trade-off between growth and tolerance responses.
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Affiliation(s)
- Ifigeneia Mellidou
- Department of Crop Production, School of Agriculture, Aristotle University of ThessalonikiThessaloniki, Greece
| | - Panagiotis N. Moschou
- Department of Plant Biology and Linnean Center of Plant Sciences, Uppsala BioCentrum, Swedish University of Agricultural SciencesUppsala, Sweden
| | | | - Chryssa Pankou
- Department of Crop Production, School of Agriculture, Aristotle University of ThessalonikiThessaloniki, Greece
| | - Katalin Gėmes
- Biological Research Centre, Hungarian Academy of SciencesSzeged, Hungary
| | | | | | - Despoina Beris
- Department of Biology, National and Kapodistrian University of AthensAthens, Greece
| | - Kosmas Haralampidis
- Department of Biology, National and Kapodistrian University of AthensAthens, Greece
| | - Andreas Roussis
- Department of Biology, National and Kapodistrian University of AthensAthens, Greece
| | - Aikaterini Karamanoli
- Department of Crop Production, School of Agriculture, Aristotle University of ThessalonikiThessaloniki, Greece
| | - Theodora Matsi
- Department of Crop Production, School of Agriculture, Aristotle University of ThessalonikiThessaloniki, Greece
| | | | - Helen-Isis Constantinidou
- Department of Crop Production, School of Agriculture, Aristotle University of ThessalonikiThessaloniki, Greece
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Mellidou I, Buts K, Hatoum D, Ho QT, Johnston JW, Watkins CB, Schaffer RJ, Gapper NE, Giovannoni JJ, Rudell DR, Hertog MLATM, Nicolai BM. Transcriptomic events associated with internal browning of apple during postharvest storage. BMC Plant Biol 2014; 14:328. [PMID: 25430515 PMCID: PMC4272543 DOI: 10.1186/s12870-014-0328-x] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2014] [Accepted: 11/07/2014] [Indexed: 05/22/2023]
Abstract
BACKGROUND Postharvest ripening of apple (Malus x domestica) can be slowed down by low temperatures, and a combination of low O2 and high CO2 levels. While this maintains the quality of most fruit, occasionally storage disorders such as flesh browning can occur. This study aimed to explore changes in the apple transcriptome associated with a flesh browning disorder related to controlled atmosphere storage using RNA-sequencing techniques. Samples from a browning-susceptible cultivar ('Braeburn') were stored for four months under controlled atmosphere. Based on a visual browning index, the inner and outer cortex of the stored apples was classified as healthy or affected tissue. RESULTS Over 600 million short single-end reads were mapped onto the Malus consensus coding sequence set, and differences in the expression profiles between healthy and affected tissues were assessed to identify candidate genes associated with internal browning in a tissue-specific manner. Genes involved in lipid metabolism, secondary metabolism, and cell wall modifications were highly modified in the affected inner cortex, while energy-related and stress-related genes were mostly altered in the outer cortex. The expression levels of several of them were confirmed using qRT-PCR. Additionally, a set of novel browning-specific differentially expressed genes, including pyruvate dehydrogenase and 1-aminocyclopropane-1-carboxylate oxidase, was validated in apples stored for various periods at different controlled atmosphere conditions, giving rise to potential biomarkers associated with high risk of browning development. CONCLUSIONS The gene expression data presented in this study will help elucidate the molecular mechanism of browning development in apples at controlled atmosphere storage. A conceptual model, including energy-related (linked to the tricarboxylic acid cycle and the electron transport chain) and lipid-related genes (related to membrane alterations, and fatty acid oxidation), for browning development in apple is proposed, which may be relevant for future studies towards improving the postharvest life of apple.
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Affiliation(s)
- Ifigeneia Mellidou
- />Division of Mechatronics, Biostatistics and Sensors, Department of Biosystems (BIOSYST), KU Leuven, Willem de Croylaan 42, bus 2428, Leuven, 3001 Belgium
| | - Kim Buts
- />Division of Mechatronics, Biostatistics and Sensors, Department of Biosystems (BIOSYST), KU Leuven, Willem de Croylaan 42, bus 2428, Leuven, 3001 Belgium
| | - Darwish Hatoum
- />Division of Mechatronics, Biostatistics and Sensors, Department of Biosystems (BIOSYST), KU Leuven, Willem de Croylaan 42, bus 2428, Leuven, 3001 Belgium
| | - Quang Tri Ho
- />Division of Mechatronics, Biostatistics and Sensors, Department of Biosystems (BIOSYST), KU Leuven, Willem de Croylaan 42, bus 2428, Leuven, 3001 Belgium
| | - Jason W Johnston
- />The New Zealand Institute for Plant & Food Research Limited, Mount Albert Research Centre, Private Bag 92169, Auckland 1142 New Zealand
| | | | - Robert J Schaffer
- />The New Zealand Institute for Plant & Food Research Limited, Mount Albert Research Centre, Private Bag 92169, Auckland 1142 New Zealand
- />The University of Auckland, Private Bag 92019, Auckland, 1142 New Zealand
| | - Nigel E Gapper
- />Department of Horticulture, Cornell University, Ithaca, NY 14853 USA
- />Boyce Thompson Institute for Plant Research, Cornell University, Ithaca, NY 14853 USA
| | - Jim J Giovannoni
- />Boyce Thompson Institute for Plant Research, Cornell University, Ithaca, NY 14853 USA
- />Plant, Soil, and Nutrition Laboratory, US Department of Agriculture/Agriculture Research Service, Ithaca, NY 14853 USA
| | - David R Rudell
- />Fruit Tree Research Laboratory, US Department of Agriculture/Agriculture Research Service, Wenatchee, WA 9880 USA
| | - Maarten LATM Hertog
- />Division of Mechatronics, Biostatistics and Sensors, Department of Biosystems (BIOSYST), KU Leuven, Willem de Croylaan 42, bus 2428, Leuven, 3001 Belgium
| | - Bart M Nicolai
- />Division of Mechatronics, Biostatistics and Sensors, Department of Biosystems (BIOSYST), KU Leuven, Willem de Croylaan 42, bus 2428, Leuven, 3001 Belgium
- />Flanders Centre of Postharvest Technology, Willem de Croylaan 42, Leuven, 3001 Belgium
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Van de Poel B, Vandenzavel N, Smet C, Nicolay T, Bulens I, Mellidou I, Vandoninck S, Hertog ML, Derua R, Spaepen S, Vanderleyden J, Waelkens E, De Proft MP, Nicolai BM, Geeraerd AH. Tissue specific analysis reveals a differential organization and regulation of both ethylene biosynthesis and E8 during climacteric ripening of tomato. BMC Plant Biol 2014; 14:11. [PMID: 24401128 PMCID: PMC3900696 DOI: 10.1186/1471-2229-14-11] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2013] [Accepted: 01/04/2014] [Indexed: 05/02/2023]
Abstract
BACKGROUND Solanum lycopersicum or tomato is extensively studied with respect to the ethylene metabolism during climacteric ripening, focusing almost exclusively on fruit pericarp. In this work the ethylene biosynthesis pathway was examined in all major tomato fruit tissues: pericarp, septa, columella, placenta, locular gel and seeds. The tissue specific ethylene production rate was measured throughout fruit development, climacteric ripening and postharvest storage. All ethylene intermediate metabolites (1-aminocyclopropane-1-carboxylic acid (ACC), malonyl-ACC (MACC) and S-adenosyl-L-methionine (SAM)) and enzyme activities (ACC-oxidase (ACO) and ACC-synthase (ACS)) were assessed. RESULTS All tissues showed a similar climacteric pattern in ethylene productions, but with a different amplitude. Profound differences were found between tissue types at the metabolic and enzymatic level. The pericarp tissue produced the highest amount of ethylene, but showed only a low ACC content and limited ACS activity, while the locular gel accumulated a lot of ACC, MACC and SAM and showed only limited ACO and ACS activity. Central tissues (septa, columella and placenta) showed a strong accumulation of ACC and MACC. These differences indicate that the ethylene biosynthesis pathway is organized and regulated in a tissue specific way. The possible role of inter- and intra-tissue transport is discussed to explain these discrepancies. Furthermore, the antagonistic relation between ACO and E8, an ethylene biosynthesis inhibiting protein, was shown to be tissue specific and developmentally regulated. In addition, ethylene inhibition by E8 is not achieved by a direct interaction between ACO and E8, as previously suggested in literature. CONCLUSIONS The Ethylene biosynthesis pathway and E8 show a tissue specific and developmental differentiation throughout tomato fruit development and ripening.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | | | | | - Annemie H Geeraerd
- Division of Mechatronics, Biostatistics and Sensors (MeBioS), Department of Biosystems (BIOSYST), KU Leuven, Willem de Croylaan 42, bus 2428, 3001 Leuven, Belgium.
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Mellidou I, Keulemans J, Kanellis AK, Davey MW. Regulation of fruit ascorbic acid concentrations during ripening in high and low vitamin C tomato cultivars. BMC Plant Biol 2012; 12:239. [PMID: 23245200 PMCID: PMC3548725 DOI: 10.1186/1471-2229-12-239] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2012] [Accepted: 12/12/2012] [Indexed: 05/20/2023]
Abstract
BACKGROUND To gain insight into the regulation of fruit ascorbic acid (AsA) pool in tomatoes, a combination of metabolite analyses, non-labelled and radiolabelled substrate feeding experiments, enzyme activity measurements and gene expression studies were carried out in fruits of the 'low-' and 'high-AsA' tomato cultivars 'Ailsa Craig' and 'Santorini' respectively. RESULTS The two cultivars exhibited different profiles of total AsA (totAsA, AsA + dehydroascorbate) and AsA accumulation during ripening, but both displayed a characteristic peak in concentrations at the breaker stage. Substrate feeding experiments demonstrated that the L-galactose pathway is the main AsA biosynthetic route in tomato fruits, but that substrates from alternative pathways can increase the AsA pool at specific developmental stages. In addition, we show that young fruits display a higher AsA biosynthetic capacity than mature ones, but this does not lead to higher AsA concentrations due to either enhanced rates of AsA breakdown ('Ailsa Craig') or decreased rates of AsA recycling ('Santorini'), depending on the cultivar. In the later stages of ripening, differences in fruit totAsA-AsA concentrations of the two cultivars can be explained by differences in the rate of AsA recycling activities. Analysis of the expression of AsA metabolic genes showed that only the expression of one orthologue of GDP-L-galactose phosphorylase (SlGGP1), and of two monodehydroascorbate reductases (SlMDHAR1 and SlMDHAR3) correlated with the changes in fruit totAsA-AsA concentrations during fruit ripening in 'Ailsa Craig', and that only the expression of SlGGP1 was linked to the high AsA concentrations found in red ripe 'Santorini' fruits. CONCLUSIONS Results indicate that 'Ailsa Craig' and 'Santorini' use complementary mechanisms to maintain the fruit AsA pool. In the low-AsA cultivar ('Ailsa Craig'), alternative routes of AsA biosynthesis may supplement biosynthesis via L-galactose, while in the high-AsA cultivar ('Santorini'), enhanced AsA recycling activities appear to be responsible for AsA accumulation in the later stages of ripening. Gene expression studies indicate that expression of SlGGP1 and two orthologues of SlMDHAR are closely correlated with totAsA-AsA concentrations during ripening and are potentially good candidates for marker development for breeding and selection.
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Affiliation(s)
- Ifigeneia Mellidou
- Laboratory for Fruit Breeding and Biotechnology, Department of Biosystems, Faculty of Bioscience Engineering, Katholieke Universiteit Leuven, B-3001, Heverlee, Belgium
| | - Johan Keulemans
- Laboratory for Fruit Breeding and Biotechnology, Department of Biosystems, Faculty of Bioscience Engineering, Katholieke Universiteit Leuven, B-3001, Heverlee, Belgium
| | - Angelos K Kanellis
- Group of Biotechnology of Pharmaceutical Plants. Laboratory of Pharmacognosy, Department of Pharmaceutical Sciences, Aristotle University of Thessaloniki, 541 24, Thessaloniki, Greece
| | - Mark W Davey
- Laboratory for Fruit Breeding and Biotechnology, Department of Biosystems, Faculty of Bioscience Engineering, Katholieke Universiteit Leuven, B-3001, Heverlee, Belgium
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Mellidou I, Chagné D, Laing WA, Keulemans J, Davey MW. Allelic variation in paralogs of GDP-L-galactose phosphorylase is a major determinant of vitamin C concentrations in apple fruit. Plant Physiol 2012; 160:1613-29. [PMID: 23001142 PMCID: PMC3490610 DOI: 10.1104/pp.112.203786] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2012] [Accepted: 09/19/2012] [Indexed: 05/18/2023]
Abstract
To identify the genetic factors underlying the regulation of fruit vitamin C (L-ascorbic acid [AsA]) concentrations, quantitative trait loci (QTL) studies were carried out in an F1 progeny derived from a cross between the apple (Malus × domestica) cultivars Telamon and Braeburn over three years. QTL were identified for AsA, glutathione, total antioxidant activity in both flesh and skin tissues, and various quality traits, including flesh browning. Four regions on chromosomes 10, 11, 16, and 17 contained stable fruit AsA-QTL clusters. Mapping of AsA metabolic genes identified colocations between orthologs of GDP-L-galactose phosphorylase (GGP), dehydroascorbate reductase (DHAR), and nucleobase-ascorbate transporter within these QTL clusters. Of particular interest are the three paralogs of MdGGP, which all colocated within AsA-QTL clusters. Allelic variants of MdGGP1 and MdGGP3 derived from the cultivar Braeburn parent were also consistently associated with higher fruit total AsA concentrations both within the mapping population (up to 10-fold) and across a range of commercial apple germplasm (up to 6-fold). Striking differences in the expression of the cv Braeburn MdGGP1 allele between fruit from high- and low-AsA genotypes clearly indicate a key role for MdGGP1 in the regulation of fruit AsA concentrations, and this MdGGP allele-specific single-nucleotide polymorphism marker represents an excellent candidate for directed breeding for enhanced fruit AsA concentrations. Interestingly, colocations were also found between MdDHAR3-3 and a stable QTL for browning in the cv Telamon parent, highlighting links between the redox status of the AsA pool and susceptibility to flesh browning.
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Affiliation(s)
- Ifigeneia Mellidou
- Laboratory for Fruit Breeding and Biotechnology, Department Biosystems, Faculty of Bioscience Engineering, Katholieke Universiteit Leuven, B–3001 Heverlee, Belgium (I.M., J.K., M.W.D.); New Zealand Institute for Plant and Food Research Limited, Palmerston North Research Centre, Palmerston North 4442, New Zealand (D.C.); and New Zealand Institute for Plant and Food Research Limited, Mount Albert Research Centre, Auckland 1142, New Zealand (W.A.L.)
| | - David Chagné
- Laboratory for Fruit Breeding and Biotechnology, Department Biosystems, Faculty of Bioscience Engineering, Katholieke Universiteit Leuven, B–3001 Heverlee, Belgium (I.M., J.K., M.W.D.); New Zealand Institute for Plant and Food Research Limited, Palmerston North Research Centre, Palmerston North 4442, New Zealand (D.C.); and New Zealand Institute for Plant and Food Research Limited, Mount Albert Research Centre, Auckland 1142, New Zealand (W.A.L.)
| | - William A. Laing
- Laboratory for Fruit Breeding and Biotechnology, Department Biosystems, Faculty of Bioscience Engineering, Katholieke Universiteit Leuven, B–3001 Heverlee, Belgium (I.M., J.K., M.W.D.); New Zealand Institute for Plant and Food Research Limited, Palmerston North Research Centre, Palmerston North 4442, New Zealand (D.C.); and New Zealand Institute for Plant and Food Research Limited, Mount Albert Research Centre, Auckland 1142, New Zealand (W.A.L.)
| | - Johan Keulemans
- Laboratory for Fruit Breeding and Biotechnology, Department Biosystems, Faculty of Bioscience Engineering, Katholieke Universiteit Leuven, B–3001 Heverlee, Belgium (I.M., J.K., M.W.D.); New Zealand Institute for Plant and Food Research Limited, Palmerston North Research Centre, Palmerston North 4442, New Zealand (D.C.); and New Zealand Institute for Plant and Food Research Limited, Mount Albert Research Centre, Auckland 1142, New Zealand (W.A.L.)
| | - Mark W. Davey
- Laboratory for Fruit Breeding and Biotechnology, Department Biosystems, Faculty of Bioscience Engineering, Katholieke Universiteit Leuven, B–3001 Heverlee, Belgium (I.M., J.K., M.W.D.); New Zealand Institute for Plant and Food Research Limited, Palmerston North Research Centre, Palmerston North 4442, New Zealand (D.C.); and New Zealand Institute for Plant and Food Research Limited, Mount Albert Research Centre, Auckland 1142, New Zealand (W.A.L.)
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Ioannidi E, Kalamaki MS, Engineer C, Pateraki I, Alexandrou D, Mellidou I, Giovannonni J, Kanellis AK. Expression profiling of ascorbic acid-related genes during tomato fruit development and ripening and in response to stress conditions. J Exp Bot 2009; 60:663-78. [PMID: 19129160 PMCID: PMC2651456 DOI: 10.1093/jxb/ern322] [Citation(s) in RCA: 145] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2008] [Accepted: 11/12/2008] [Indexed: 05/11/2023]
Abstract
L-ascorbate (the reduced form of vitamin C) participates in diverse biological processes including pathogen defence mechanisms, and the modulation of plant growth and morphology, and also acts as an enzyme cofactor and redox status indicator. One of its chief biological functions is as an antioxidant. L-ascorbate intake has been implicated in the prevention/alleviation of varied human ailments and diseases including cancer. To study the regulation of accumulation of this important nutraceutical in fruit, the expression of 24 tomato (Solanum lycopersicon) genes involved in the biosynthesis, oxidation, and recycling of L-ascorbate during the development and ripening of fruit have been characterized. Taken together with L-ascorbate abundance data, the results show distinct changes in the expression profiles for these genes, implicating them in nodal regulatory roles during the process of L-ascorbate accumulation in tomato fruit. The expression of these genes was further studied in the context of abiotic and post-harvest stress, including the effects of heat, cold, wounding, oxygen supply, and ethylene. Important aspects of the hypoxic and post-anoxic response in tomato fruit are discussed. The data suggest that L-galactose-1-phosphate phosphatase could play an important role in regulating ascorbic acid accumulation during tomato fruit development and ripening.
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Affiliation(s)
- Eugenia Ioannidi
- Group of Biotechnology of Pharmaceutical Plants, Division of Pharmacognosy–Pharmacology, Department of Pharmaceutical Sciences, Aristotle University of Thessaloniki, 541 24 Thessaloniki, Greece
| | - Mary S. Kalamaki
- Group of Biotechnology of Pharmaceutical Plants, Division of Pharmacognosy–Pharmacology, Department of Pharmaceutical Sciences, Aristotle University of Thessaloniki, 541 24 Thessaloniki, Greece
| | - Cawas Engineer
- Group of Biotechnology of Pharmaceutical Plants, Division of Pharmacognosy–Pharmacology, Department of Pharmaceutical Sciences, Aristotle University of Thessaloniki, 541 24 Thessaloniki, Greece
| | - Irene Pateraki
- Group of Biotechnology of Pharmaceutical Plants, Division of Pharmacognosy–Pharmacology, Department of Pharmaceutical Sciences, Aristotle University of Thessaloniki, 541 24 Thessaloniki, Greece
| | - Dimitris Alexandrou
- Group of Biotechnology of Pharmaceutical Plants, Division of Pharmacognosy–Pharmacology, Department of Pharmaceutical Sciences, Aristotle University of Thessaloniki, 541 24 Thessaloniki, Greece
| | - Ifigeneia Mellidou
- Group of Biotechnology of Pharmaceutical Plants, Division of Pharmacognosy–Pharmacology, Department of Pharmaceutical Sciences, Aristotle University of Thessaloniki, 541 24 Thessaloniki, Greece
| | - James Giovannonni
- Boyce Thompson Institute for Plant Research, Tower Road, Cornell Campus, Ithaca, NY 14853, USA
- USDA Plant, Soil, and Nutrition Laboratory, USDA-ARS, Tower Road, Cornell Campus, Ithaca, NY 14853, USA
| | - Angelos K. Kanellis
- Group of Biotechnology of Pharmaceutical Plants, Division of Pharmacognosy–Pharmacology, Department of Pharmaceutical Sciences, Aristotle University of Thessaloniki, 541 24 Thessaloniki, Greece
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Mellidou I, Siomos A, Keulemans J, Kanellis A, Davey MW. Ascorbic acid biosynthesis during tomato fruit development and ripening. Commun Agric Appl Biol Sci 2008; 73:177-180. [PMID: 18831269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Affiliation(s)
- I Mellidou
- Laboratory of Fruit Breeding and Biotechnology, Dept. of Biosystems, KULeuven, Belgium
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