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Moreau C, Warren FJ, Rayner T, Perez-Moral N, Lawson DM, Wang TL, Domoney C. An allelic series of starch-branching enzyme mutants in pea (Pisum sativum L.) reveals complex relationships with seed starch phenotypes. Carbohydr Polym 2022; 288:119386. [PMID: 35450647 DOI: 10.1016/j.carbpol.2022.119386] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Revised: 02/28/2022] [Accepted: 03/18/2022] [Indexed: 11/02/2022]
Abstract
A set of mutant pea lines carrying induced mutations within the major seed-expressed starch-branching enzyme gene has been characterised at the molecular, chemical and agronomic levels. Eight of the induced mutations, three of which predicted a premature stop codon, were compared with the naturally occurring starch-branching enzyme mutation within the same genetic background. Starch, amylose and sugar measurements, coupled with analysis by ultra-high performance liquid chromatography-size exclusion chromatography of starches, identified a range of phenotypes which were grouped according to the nature of the mutation. Homology modelling of proteins supported the differences in phenotypes observed. Differences in field performance were evident for selected mutants, particularly in seed yield and mean seed weight traits for early compared with late spring sowings. The data show the potential of an allelic series of mutants at this locus for nutritional studies. CHEMICAL COMPOUNDS: starch, amylose, amylopectin, raffinose, stachyose, verbascose.
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Affiliation(s)
- Carol Moreau
- John Innes Centre, Norwich Research Park, Norwich, UK
| | | | - Tracey Rayner
- John Innes Centre, Norwich Research Park, Norwich, UK
| | | | | | - Trevor L Wang
- John Innes Centre, Norwich Research Park, Norwich, UK
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2
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Gianella M, Doria E, Dondi D, Milanese C, Gallotti L, Börner A, Zannino L, Macovei A, Pagano A, Guzzon F, Biggiogera M, Balestrazzi A. Physiological and molecular aspects of seed longevity: exploring intra-species variation in eight Pisum sativum L. accessions. PHYSIOLOGIA PLANTARUM 2022; 174:e13698. [PMID: 35526223 PMCID: PMC9321030 DOI: 10.1111/ppl.13698] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Revised: 04/20/2022] [Accepted: 05/02/2022] [Indexed: 05/12/2023]
Abstract
Conservation of plant genetic diversity is fundamental for crop improvement, increasing agricultural production and sustainability, especially in the face of climatic changes. Although seed longevity is essential for the management of seed banks, few studies have, so far, addressed differences in this trait among the accessions of a single species. Eight Pisum sativum L. (pea) accessions were investigated to study the impact of long-term (approximately 20 years) storage, aiming to reveal contrasting seed longevity and clarify the causes for these differences. The outstanding seed longevity observed in the G4 accession provided a unique experimental system. To characterize the biochemical and physical status of stored seeds, reactive oxygen species, lipid peroxidation, tocopherols, free proline and reducing sugars were measured. Thermoanalytical measurements (thermogravimetry and differential scanning calorimetry) and transmission electron microscopy combined with immunohistochemical analysis were performed. The long-lived G4 seeds neither consumed tocopherols during storage nor showed free proline accumulation, as a deterioration hallmark, whereas reducing sugars were not affected. Thermal decomposition suggested a biomass composition compatible with the presence of low molecular weight molecules. Expansion of heterochromatic areas and reduced occurrence of γH2AX foci were highlighted in the nucleus of G4 seeds. The longevity of G4 seeds correlates with the occurrence of a reducing cellular environment and a nuclear ultrastructure favourable to genome stability. This work brings novelty to the study of within-species variations in seed longevity, underlining the relevance of multidisciplinary approaches in seed longevity research.
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Affiliation(s)
- Maraeva Gianella
- Department of Biology and Biotechnology ‘L. Spallanzani’University of PaviaPaviaItaly
- Royal Botanic Gardens, Kew, Wakehurst, ArdinglyHaywards HeathWest SussexUK
| | - Enrico Doria
- Department of Biology and Biotechnology ‘L. Spallanzani’University of PaviaPaviaItaly
| | - Daniele Dondi
- C.S.G.I. & Department of ChemistryUniversity of PaviaPaviaItaly
| | - Chiara Milanese
- C.S.G.I. & Department of ChemistryUniversity of PaviaPaviaItaly
| | - Lucia Gallotti
- C.S.G.I. & Department of ChemistryUniversity of PaviaPaviaItaly
| | - Andreas Börner
- Genebank DepartmentLeibniz Institute of Plant Genetics and Crop Plant Research (IPK) CorrensstrSeelandGermany
| | - Lorena Zannino
- Department of Biology and Biotechnology ‘L. Spallanzani’University of PaviaPaviaItaly
| | - Anca Macovei
- Department of Biology and Biotechnology ‘L. Spallanzani’University of PaviaPaviaItaly
| | - Andrea Pagano
- Department of Biology and Biotechnology ‘L. Spallanzani’University of PaviaPaviaItaly
| | - Filippo Guzzon
- International Maize and Wheat Improvement Center (CIMMYT)Carretera México‐VeracruzTexcocoMexico StateMexico
- Centre for Pacific Crops and Trees (CePaCT), Land Resource Division (LRD)Pacific Community (SPC)SuvaFiji
| | - Marco Biggiogera
- Department of Biology and Biotechnology ‘L. Spallanzani’University of PaviaPaviaItaly
| | - Alma Balestrazzi
- Department of Biology and Biotechnology ‘L. Spallanzani’University of PaviaPaviaItaly
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Robinson GHJ, Domoney C. Perspectives on the genetic improvement of health- and nutrition-related traits in pea. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2021; 158:353-362. [PMID: 33250319 PMCID: PMC7801860 DOI: 10.1016/j.plaphy.2020.11.020] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Accepted: 11/15/2020] [Indexed: 05/27/2023]
Abstract
Pea (Pisum sativum L.) is a widely grown pulse crop that is a source of protein, starch and micronutrients in both human diets and livestock feeds. There is currently a strong global focus on making agriculture and food production systems more sustainable, and pea has one of the smallest carbon footprints of all crops. Multiple genetic loci have been identified that influence pea seed protein content, but protein composition is also important nutritionally. Studies have previously identified gene families encoding individual seed protein classes, now documented in a reference pea genome assembly. Much is also known about loci affecting starch metabolism in pea, with research especially focusing on improving concentrations of resistant starch, which has a positive effect on maintaining blood glucose homeostasis. Diversity in natural germplasm for micronutrient concentrations and mineral hyperaccumulation mutants have been discovered, with quantitative trait loci on multiple linkage groups identified for seed micronutrient concentrations. Antinutrients, which affect nutrient bioavailability, must also be considered; mutants in which the concentrations of important antinutrients including phytate and trypsin inhibitors are reduced have already been discovered. Current knowledge on the genetics of nutritional traits in pea will greatly assist with crop improvement for specific end uses, and further identification of genes involved will help advance our knowledge of the control of the synthesis of seed compounds.
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Affiliation(s)
- Gabriel H J Robinson
- Department of Metabolic Biology, John Innes Centre, Norwich Research Park, Colney, Norwich, NR4 7UH, United Kingdom
| | - Claire Domoney
- Department of Metabolic Biology, John Innes Centre, Norwich Research Park, Colney, Norwich, NR4 7UH, United Kingdom.
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5
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Petropoulou K, Salt LJ, Edwards CH, Warren FJ, Garcia-Perez I, Chambers ES, Alshaalan R, Khatib M, Perez-Moral N, Cross KL, Kellingray L, Stanley R, Koev T, Khimyak YZ, Narbad A, Penney N, Serrano-Contreras JI, Charalambides MN, Miguens Blanco J, Castro Seoane R, McDonald JAK, Marchesi JR, Holmes E, Godsland IF, Morrison DJ, Preston T, Domoney C, Wilde PJ, Frost GS. A natural mutation in Pisum sativum L. (pea) alters starch assembly and improves glucose homeostasis in humans. NATURE FOOD 2020; 1:693-704. [PMID: 37128029 DOI: 10.1038/s43016-020-00159-8] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Accepted: 09/02/2020] [Indexed: 11/09/2022]
Abstract
Elevated postprandial glucose (PPG) is a significant risk factor for non-communicable diseases globally. Currently, there is a limited understanding of how starch structures within a carbohydrate-rich food matrix interact with the gut luminal environment to control PPG. Here, we use pea seeds (Pisum sativum) and pea flour, derived from two near-identical pea genotypes (BC1/19RR and BC1/19rr) differing primarily in the type of starch accumulated, to explore the contribution of starch structure, food matrix and intestinal environment to PPG. Using stable isotope 13C-labelled pea seeds, coupled with synchronous gastric, duodenal and plasma sampling in vivo, we demonstrate that maintenance of cell structure and changes in starch morphology are closely related to lower glucose availability in the small intestine, resulting in acutely lower PPG and promotion of changes in the gut bacterial composition associated with long-term metabolic health improvements.
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Affiliation(s)
- Katerina Petropoulou
- Section for Nutrition Research, Department of Metabolism, Digestion and Reproduction, Faculty of Medicine, Imperial College London, London, UK
| | | | | | | | - Isabel Garcia-Perez
- Computational and Systems Medicine, Division of Integrated Systems Medicine and Digestive Diseases, Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, London, UK
| | - Edward S Chambers
- Section for Nutrition Research, Department of Metabolism, Digestion and Reproduction, Faculty of Medicine, Imperial College London, London, UK
| | - Rasha Alshaalan
- Section for Nutrition Research, Department of Metabolism, Digestion and Reproduction, Faculty of Medicine, Imperial College London, London, UK
- Clinical Nutrition Program, Department of Health, College of Health and Rehabilitation Sciences, Princess Noura Bint Abdulrahman University, Riyadh, Saudi Arabia
| | - Mai Khatib
- Section for Nutrition Research, Department of Metabolism, Digestion and Reproduction, Faculty of Medicine, Imperial College London, London, UK
- Faculty of Applied Medical Sciences, Department of Clinical Nutrition, King Abdulaziz University, Jeddah, Saudi Arabia
| | | | | | | | | | - Todor Koev
- Quadram Institute Bioscience, Norwich, UK
- School of Pharmacy, University of East Anglia, Norwich, UK
| | | | | | - Nicholas Penney
- Computational and Systems Medicine, Division of Integrated Systems Medicine and Digestive Diseases, Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, London, UK
| | - Jose Ivan Serrano-Contreras
- Computational and Systems Medicine, Division of Integrated Systems Medicine and Digestive Diseases, Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, London, UK
| | | | - Jesus Miguens Blanco
- Division of Integrative Systems Medicine and Digestive Disease, Department of Metabolism, Digestion and Reproduction, Imperial College London, London, UK
| | - Rocio Castro Seoane
- Division of Integrative Systems Medicine and Digestive Disease, Department of Metabolism, Digestion and Reproduction, Imperial College London, London, UK
| | - Julie A K McDonald
- MRC Centre for Molecular Bacteriology and Infection, Imperial College London, London, UK
| | - Julian R Marchesi
- Division of Integrative Systems Medicine and Digestive Disease, Department of Metabolism, Digestion and Reproduction, Imperial College London, London, UK
- School of Biosciences, Cardiff University, Cardiff, UK
| | - Elaine Holmes
- Section for Nutrition Research, Department of Metabolism, Digestion and Reproduction, Faculty of Medicine, Imperial College London, London, UK
- Computational and Systems Medicine, Division of Integrated Systems Medicine and Digestive Diseases, Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, London, UK
- Centre for Computational & Systems Medicine, Murdoch University, Perth, Western Australia, Australia
| | - Ian F Godsland
- Diabetes, Endocrinology and Metabolism, Department of Medicine, Imperial College London, London, UK
| | - Douglas J Morrison
- Scottish Universities Environmental Research Centre, University of Glasgow, East Kilbride, UK
| | - Tom Preston
- Scottish Universities Environmental Research Centre, University of Glasgow, East Kilbride, UK
| | | | | | - Gary S Frost
- Section for Nutrition Research, Department of Metabolism, Digestion and Reproduction, Faculty of Medicine, Imperial College London, London, UK.
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Santos CS, Carbas B, Castanho A, Vasconcelos MW, Vaz Patto MC, Domoney C, Brites C. Variation in Pea ( Pisum sativum L.) Seed Quality Traits Defined by Physicochemical Functional Properties. Foods 2019; 8:foods8110570. [PMID: 31766191 PMCID: PMC6915640 DOI: 10.3390/foods8110570] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2019] [Revised: 11/05/2019] [Accepted: 11/11/2019] [Indexed: 12/19/2022] Open
Abstract
Pea is one of the most produced and consumed pulse crops around the world. The study of genetic variability within pea germplasm is an important tool to identify outstanding accessions with optimal functional and nutritional qualities. In the present study, a collection of 105 pea accessions was analysed for physicochemical properties, pasting viscosity, and basic composition parameters. While pasting viscosities were negatively correlated to hydration capacity, cooking time, and basic composition, a positive correlation was found between the hydration capacity and the basic composition parameters. Basic composition (protein, fibre, fat, and resistant starch) parameters were further evaluated regarding seed trait morphology, namely, seed shape, colour, and surface. Allelic characterisation at the r and rb genetic loci was performed in a subgroup of 32 accessions (3 phenotyped as smooth and 29 as rough seeded), revealing that none of the initially classified rough-seeded accessions were rb mutants, 19 were r mutants, and 13 were neither r nor rb. Despite their initial phenotypic classification, the 13 accessions genetically classified as smooth behaved differently (p < 0.05) to the 19 r mutants in terms of physicochemical properties, pasting viscosity, and basic composition parameters. Using multivariate analysis of the most discriminatory parameters for the food-related traits studied, the best-performing accessions at functional and nutritional levels were identified for future plant breeding to improve field pea production and consumption.
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Affiliation(s)
- Carla S. Santos
- Universidade Católica Portuguesa, CBQF—Centro de Biotecnologia e Química Fina—Laboratório Associado, Escola Superior de Biotecnologia, Rua Diogo Botelho 1327, 4169-005 Porto, Portugal (M.W.V.)
| | - Bruna Carbas
- INIAV—Instituto Nacional de Investigação Agrária e Veterinária, Avenida da República, 2780-157 Oeiras, Portugal; (B.C.); (A.C.)
| | - Ana Castanho
- INIAV—Instituto Nacional de Investigação Agrária e Veterinária, Avenida da República, 2780-157 Oeiras, Portugal; (B.C.); (A.C.)
| | - Marta W. Vasconcelos
- Universidade Católica Portuguesa, CBQF—Centro de Biotecnologia e Química Fina—Laboratório Associado, Escola Superior de Biotecnologia, Rua Diogo Botelho 1327, 4169-005 Porto, Portugal (M.W.V.)
| | - Maria Carlota Vaz Patto
- ITQB NOVA—Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Avenida da República, 2780-157 Oeiras, Portugal;
| | - Claire Domoney
- John Innes Centre, Norwich Research Park, Norwich NR4 7UH, UK;
| | - Carla Brites
- INIAV—Instituto Nacional de Investigação Agrária e Veterinária, Avenida da República, 2780-157 Oeiras, Portugal; (B.C.); (A.C.)
- Correspondence: ; Tel.: +351-214403500
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8
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Ellis N, Hattori C, Cheema J, Donarski J, Charlton A, Dickinson M, Venditti G, Kaló P, Szabó Z, Kiss GB, Domoney C. NMR Metabolomics Defining Genetic Variation in Pea Seed Metabolites. FRONTIERS IN PLANT SCIENCE 2018; 9:1022. [PMID: 30065739 PMCID: PMC6056766 DOI: 10.3389/fpls.2018.01022] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Accepted: 06/25/2018] [Indexed: 05/13/2023]
Abstract
Nuclear magnetic resonance (NMR) spectroscopy profiling was used to provide an unbiased assessment of changes to the metabolite composition of seeds and to define genetic variation for a range of pea seed metabolites. Mature seeds from recombinant inbred lines, derived from three mapping populations for which there is substantial genetic marker linkage information, were grown in two environments/years and analyzed by non-targeted NMR. Adaptive binning of the NMR metabolite data, followed by analysis of quantitative variation among lines for individual bins, identified the main genomic regions determining this metabolic variability and the variability for selected compounds was investigated. Analysis by t-tests identified a set of bins with highly significant associations to genetic map regions, based on probability (p) values that were appreciably lower than those determined for randomized data. The correlation between bins showing high mean absolute deviation and those showing low p-values for marker association provided an indication of the extent to which the genetics of bin variation might be explained by one or a few loci. Variation in compounds related to aromatic amino acids, branched-chain amino acids, sucrose-derived metabolites, secondary metabolites and some unidentified compounds was associated with one or more genetic loci. The combined analysis shows that there are multiple loci throughout the genome that together impact on the abundance of many compounds through a network of interactions, where individual loci may affect more than one compound and vice versa. This work therefore provides a framework for the genetic analysis of the seed metabolome, and the use of genetic marker data in the breeding and selection of seeds for specific seed quality traits and compounds that have high commercial value.
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Affiliation(s)
- Noel Ellis
- John Innes Centre, Norwich, United Kingdom
- IBERS, Aberystwyth University, Aberystwyth, United Kingdom
- Faculty of Science, School of Biological Sciences, University of Auckland, Auckland, New Zealand
| | | | | | | | | | | | | | - Péter Kaló
- National Agricultural Research and Innovation Centre, Agricultural Biotechnology Institute, Gödöllő, Hungary
| | - Zoltán Szabó
- National Agricultural Research and Innovation Centre, Agricultural Biotechnology Institute, Gödöllő, Hungary
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