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Prohaska A, Rey-Serra P, Petit J, Petit A, Perrotte J, Rothan C, Denoyes B. Exploration of a European-centered strawberry diversity panel provides markers and candidate genes for the control of fruit quality traits. HORTICULTURE RESEARCH 2024; 11:uhae137. [PMID: 38988619 PMCID: PMC11233882 DOI: 10.1093/hr/uhae137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/04/2024] [Accepted: 05/05/2024] [Indexed: 07/12/2024]
Abstract
Fruit quality traits are major breeding targets in cultivated strawberry (Fragaria × ananassa). Taking into account the requirements of both growers and consumers when selecting high-quality cultivars is a real challenge. Here, we used a diversity panel enriched with unique European accessions and the 50 K FanaSNP array to highlight the evolution of strawberry diversity over the past 160 years, investigate the molecular basis of 12 major fruit quality traits by genome-wide association studies (GWAS), and provide genetic markers for breeding. Results show that considerable improvements of key breeding targets including fruit weight, firmness, composition, and appearance occurred simultaneously in European and American cultivars. Despite the high genetic diversity of our panel, we observed a drop in nucleotide diversity in certain chromosomal regions, revealing the impact of selection. GWAS identified 71 associations with 11 quality traits and, while validating known associations (firmness, sugar), highlighted the predominance of new quantitative trait locus (QTL), demonstrating the value of using untapped genetic resources. Three of the six selective sweeps detected are related to glossiness or skin resistance, two little-studied traits important for fruit attractiveness and, potentially, postharvest shelf life. Moreover, major QTL for firmness, glossiness, skin resistance, and susceptibility to bruising are found within a low diversity region of chromosome 3D. Stringent search for candidate genes underlying QTL uncovered strong candidates for fruit color, firmness, sugar and acid composition, glossiness, and skin resistance. Overall, our study provides a potential avenue for extending shelf life without compromising flavor and color as well as the genetic markers needed to achieve this goal.
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Affiliation(s)
- Alexandre Prohaska
- Univ. Bordeaux, INRAE, UMR BFP, F-33140 Villenave d'Ornon, France
- Invenio, MIN de Brienne, 110 Quai de Paludate, 33000 Bordeaux, France
| | - Pol Rey-Serra
- Univ. Bordeaux, INRAE, UMR BFP, F-33140 Villenave d'Ornon, France
| | - Johann Petit
- Univ. Bordeaux, INRAE, UMR BFP, F-33140 Villenave d'Ornon, France
| | - Aurélie Petit
- Invenio, MIN de Brienne, 110 Quai de Paludate, 33000 Bordeaux, France
| | - Justine Perrotte
- Invenio, MIN de Brienne, 110 Quai de Paludate, 33000 Bordeaux, France
| | | | - Béatrice Denoyes
- Univ. Bordeaux, INRAE, UMR BFP, F-33140 Villenave d'Ornon, France
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Mellidou I, Kanellis AK. Revisiting the role of ascorbate oxidase in plant systems. JOURNAL OF EXPERIMENTAL BOTANY 2024; 75:2740-2753. [PMID: 38366668 DOI: 10.1093/jxb/erae058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [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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Martínez-Rivas FJ, Fernie AR. Metabolomics to understand metabolic regulation underpinning fruit ripening, development, and quality. JOURNAL OF EXPERIMENTAL BOTANY 2024; 75:1726-1740. [PMID: 37864494 PMCID: PMC10938048 DOI: 10.1093/jxb/erad384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Accepted: 09/28/2023] [Indexed: 10/23/2023]
Abstract
Classically fruit ripening and development was studied using genetic approaches, with understanding of metabolic changes that occurred in concert largely focused on a handful of metabolites including sugars, organic acids, cell wall components, and phytohormones. The advent and widespread application of metabolomics has, however, led to far greater understanding of metabolic components that play a crucial role not only in this process but also in influencing the organoleptic and nutritive properties of the fruits. Here we review how the study of natural variation, mutants, transgenics, and gene-edited fruits has led to a considerable increase in our understanding of these aspects. We focus on fleshy fruits such as tomato but also review berries, receptacle fruits, and stone-bearing fruits. Finally, we offer a perspective as to how comparative analyses and machine learning will likely further improve our comprehension of the functional importance of various metabolites in the future.
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Affiliation(s)
- Félix Juan Martínez-Rivas
- Centro de Biotecnología y Genómica de Plantas, Universidad Politécnica de Madrid (UPM) – Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA-CSIC), Madrid, Spain
- Departamento de Bioquímica y Biología Molecular, Universidad de Córdoba, Edificio Severo Ochoa, Campus de Rabanales, E-14014, Córdoba, Spain
| | - Alisdair R Fernie
- Max-Planck-Institute of Molecular Plant Physiology, Am Mühlenberg 1, 14476 Potsdam-Golm, Germany
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Wang P, Li Q, Wei J, Zeng S, Sun B, Sun W, Ma P. Germplasm Resources and Metabolite Marker Screening of High-Flavonoid Tartary Buckwheat ( Fagopyrum tataricum). JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:20131-20145. [PMID: 38063436 DOI: 10.1021/acs.jafc.3c06878] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2023]
Abstract
Tartary buckwheat is an annual minor cereal crop with a variety of secondary metabolites, endowing it with a high nutritional and medicinal value. Flavonoids constitute the primary compounds of Tartary buckwheat. Recently, metabolomics, as an adjunct breeding method, has been increasingly employed in crop research. This study explores the correlation between the total flavonoid content (TFC) and antioxidant capacity in 167 Tartary buckwheat varieties. Ten Tartary buckwheat varieties with significant differences in flavonoid content and antioxidant capacity were selected by cluster analysis. With the use of liquid chromatography-mass spectrometry, 58 flavonoid compounds were identified, namely, 42 flavonols, 10 flavanols, 3 flavanones, 1 isoflavone, 1 anthocyanidin, and 1 proanthocyanidin. Different samples were clearly separated by employing principal component analysis and partial least-squares discriminant analysis. Eight differential flavonoid compounds were further selected through volcano plots and variable importance in projection. Differential metabolites were highly correlated with TFC and antioxidant capacity. Finally, metabolic markers of kaempferol-3-O-hexoside, kaempferol-7-O-glucoside, and naringenin-O-hexoside were determined by the random forest model. The findings provide a basis for the selection and identification of Tartary buckwheat varieties with high flavonoid content and strong antioxidant activity.
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Affiliation(s)
- Peng Wang
- College of Life Sciences, Northwest A&F University, Yangling 712100, China
| | - Qian Li
- College of Life Sciences, Northwest A&F University, Yangling 712100, China
| | - Jia Wei
- Jilin Provincial Key Laboratory of Agricultural Biotechnology, Jilin Academy of Agricultural Sciences (Northeast Agricultural Research Center of China), Changchun 130033, China
| | - Sijia Zeng
- College of Life Sciences, Northwest A&F University, Yangling 712100, China
| | - Boshi Sun
- College of Life Sciences, Northwest A&F University, Yangling 712100, China
| | - Wei Sun
- Key Laboratory of Beijing for Identification and Safety Evaluation of Chinese Medicine, Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China
| | - Pengda Ma
- College of Life Sciences, Northwest A&F University, Yangling 712100, China
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