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Stroka MA, Reis L, Souza Los KKD, Pinto CA, Gustani FM, Forney CF, Etto RM, Galvão CW, Ayub RA. The maturation profile triggers differential expression of sugar metabolism genes in melon fruits. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2024; 207:108418. [PMID: 38346367 DOI: 10.1016/j.plaphy.2024.108418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Revised: 01/30/2024] [Accepted: 02/01/2024] [Indexed: 03/16/2024]
Abstract
Melons are commercially important crops that requires specific quality attributes for successful commercialization, including accumulation of sugars, particularly sucrose. This trait can be influenced by various factors, such as the type of ripening. Cucumis melo L. is an ideal species for studying sugar metabolism because it has both climacteric and non-climacteric cultivars. Thus, this study aimed to examine the gene expression of sucrose metabolism candidates using RT-qPCR, in conjunction with postharvest physiological analyzes and high-performance liquid chromatography-based sugar quantification, in the melon cultivars 'Gaúcho' (climacteric) and 'Eldorado' (non-climacteric). The results showed that sucrose synthase 1 played a role in the synthesis and accumulation of sucrose in both cultivars, whereas sucrose synthase 2 was more highly expressed in 'Gaúcho', contributing to lower hexose content. Invertase inhibitor 1 was more highly expressed in 'Eldorado' and may be involved in sugar-induced maturation. Neutral α-galactosidase had distinct functions, playing a role in substrate synthesis for the growth of young 'Eldorado' fruits, whereas in mature 'Gaúcho' fruits it participated in the metabolism of raffinose family oligosaccharides for sucrose accumulation. The expression of trehalose-6-phosphate synthase genes indicated a greater involvement of these enzymes in the sugar regulation in 'Gaúcho' melons. These findings shed light on the intraspecific differences related to fruit quality attributes in different types of maturation and contribute to a deeper understanding of the underlying molecular mechanisms involved in the metabolism of sugars in melons, which can inform breeding programs aimed at improving fruit quality attributes in this crop.
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Affiliation(s)
- Marília Aparecida Stroka
- State University of Ponta Grossa, Department of Plant Science and Phytosanitary, Ponta Grossa, Paraná, 84.030-900, Brazil.
| | - Letícia Reis
- State University of Ponta Grossa, Department of Plant Science and Phytosanitary, Ponta Grossa, Paraná, 84.030-900, Brazil.
| | - Kamila Karoline de Souza Los
- State University of Ponta Grossa, Department of Plant Science and Phytosanitary, Ponta Grossa, Paraná, 84.030-900, Brazil.
| | - Calistene Aparecida Pinto
- State University of Ponta Grossa, Department of Plant Science and Phytosanitary, Ponta Grossa, Paraná, 84.030-900, Brazil.
| | - Flávia Maria Gustani
- State University of Ponta Grossa, Department of Plant Science and Phytosanitary, Ponta Grossa, Paraná, 84.030-900, Brazil.
| | - Charles F Forney
- Agriculture and Agri-Food Canada (AAFC), Kentville, Nova Scotia, Canada, B4N 1J5.
| | - Rafael Mazer Etto
- State University of de Ponta Grossa, Department of Chemistry, Ponta Grossa, Paraná, 84.030-900, Brazil.
| | - Carolina Weigert Galvão
- State University of Ponta Grossa, Department of Molecular Biology, Structural and Genetics, Ponta Grossa, Paraná, 84.030-900, Brazil.
| | - Ricardo Antonio Ayub
- State University of Ponta Grossa, Department of Plant Science and Phytosanitary, Paraná, 84.030-900, Brazil.
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Cheng H, Kong W, Tang T, Ren K, Zhang K, Wei H, Lin T. Identification of Key Gene Networks Controlling Soluble Sugar and Organic Acid Metabolism During Oriental Melon Fruit Development by Integrated Analysis of Metabolic and Transcriptomic Analyses. FRONTIERS IN PLANT SCIENCE 2022; 13:830517. [PMID: 35646021 PMCID: PMC9135470 DOI: 10.3389/fpls.2022.830517] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Accepted: 04/13/2022] [Indexed: 06/15/2023]
Abstract
Oriental melon (Cucumis melo var. acidulus) is one of the most economically important fruit crops worldwide. To elucidate the molecular basis related to soluble sugar and organic acid metabolism in the fruits of two oriental melon cultivars with different sweetness, we performed integrated metabolomic and transcriptomic analyses of the fruits of 'Tianbao' (A) with high sweetness and 'Xiaocuigua' (B) with low sweetness at different ripening stages. The high accumulation of sucrose, D-glucose, D-(+)-raffinose, and the relatively lower citric acid and malic acid might contribute to the sweet taste of A. By screening the differentially expressed genes (DEGs) and correlation analysis of the DEGs and differentially accumulated metabolites, we deduced that the B cultivar might promote the conversion of glucose and fructose into intermediate compounds for downstream processes such as glycolysis. The tricarboxylic acid (TCA) cycle might also be enhanced compared to A, thus resulting in the differential accumulation of soluble sugars and organic acids, ultimately causing the taste difference between the two oriental melon cultivars. Our finding provides important information for further exploring the metabolic mechanisms of soluble sugars and organic acids in oriental melon.
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Affiliation(s)
- Hong Cheng
- Vegetable Research Institute, Gansu Academy of Agricultural Sciences, Lanzhou, China
| | - Weiping Kong
- Vegetable Research Institute, Gansu Academy of Agricultural Sciences, Lanzhou, China
| | - Taoxia Tang
- Vegetable Research Institute, Gansu Academy of Agricultural Sciences, Lanzhou, China
| | - Kaili Ren
- Vegetable Research Institute, Gansu Academy of Agricultural Sciences, Lanzhou, China
| | - Kaili Zhang
- Vegetable Research Institute, Gansu Academy of Agricultural Sciences, Lanzhou, China
| | - Huxia Wei
- Vegetable Research Institute, Gansu Academy of Agricultural Sciences, Lanzhou, China
| | - Tao Lin
- College of Horticulture, China Agricultural University, Beijing, China
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Santo Domingo M, Areco L, Mayobre C, Valverde L, Martín-Hernández AM, Pujol M, Garcia-Mas J. Modulating climacteric intensity in melon through QTL stacking. HORTICULTURE RESEARCH 2022; 9:uhac131. [PMID: 35928400 PMCID: PMC9343914 DOI: 10.1093/hr/uhac131] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Accepted: 05/29/2022] [Indexed: 05/14/2023]
Abstract
Fruit ripening is one of the main processes affecting fruit quality and shelf life. In melon there are both climacteric and non-climacteric genotypes, making it a suitable species to study fruit ripening. In the current study, in order to fine tune ripening, we have pyramided three climacteric QTLs in the non-climacteric genotype "Piel de Sapo": ETHQB3.5, ETHQV6.3 and ETHQV8.1. The results showed that the three QTLs interact epistatically, affecting ethylene production and ripening-related traits such as aroma profile. Each individual QTL has a specific role in the ethylene production profile. ETHQB3.5 accelerates the ethylene peak, ETHQV6.3 advances the ethylene production and ETHQV8.1 enhances the effect of the other two QTLs. Regarding aroma, the three QTLs independently activated the production of esters changing the aroma profile of the fruits, with no significant effects in fruit firmness, soluble solid content and fruit size. Understanding the interaction and the effect of different ripening QTLs offers a powerful knowledge for candidate gene identification as well as for melon breeding programs, where fruit ripening is one of the main objectives.
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Affiliation(s)
- Miguel Santo Domingo
- Centre for Research in Agricultural Genomics (CRAG) CSIC-IRTA-UAB-UB, Edifici CRAG, Campus UAB, Bellaterra, 08193 Barcelona, Spain
| | - Lorena Areco
- Centre for Research in Agricultural Genomics (CRAG) CSIC-IRTA-UAB-UB, Edifici CRAG, Campus UAB, Bellaterra, 08193 Barcelona, Spain
| | - Carlos Mayobre
- Centre for Research in Agricultural Genomics (CRAG) CSIC-IRTA-UAB-UB, Edifici CRAG, Campus UAB, Bellaterra, 08193 Barcelona, Spain
| | - Laura Valverde
- Centre for Research in Agricultural Genomics (CRAG) CSIC-IRTA-UAB-UB, Edifici CRAG, Campus UAB, Bellaterra, 08193 Barcelona, Spain
| | - Ana Montserrat Martín-Hernández
- Centre for Research in Agricultural Genomics (CRAG) CSIC-IRTA-UAB-UB, Edifici CRAG, Campus UAB, Bellaterra, 08193 Barcelona, Spain
- Institut de Recerca i Tecnologia Agoralimentàries (IRTA), Edifici CRAG, Campus UAB, Bellaterra, 08193 Barcelona, Spain
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Zarid M, García-Carpintero V, Esteras C, Esteva J, Bueso MC, Cañizares J, Picó MB, Monforte AJ, Fernández-Trujillo JP. Transcriptomic analysis of a near-isogenic line of melon with high fruit flesh firmness during ripening. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2021; 101:754-777. [PMID: 32713003 DOI: 10.1002/jsfa.10688] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/25/2018] [Revised: 07/16/2020] [Accepted: 07/26/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND A near-isogenic line (NIL) of melon (SC10-2) with introgression in linkage group X was studied from harvest (at firm-ripe stage of maturity) until day 18 of postharvest storage at 20.5 °C together with its parental control ('Piel de Sapo', PS). RESULTS SC10-2 showed higher flesh firmness and whole fruit hardness but lower juiciness than its parental. SC10-2 showed a decrease in respiration rate accompanied by a decrease in ethylene production during ripening, both of which fell to a greater extent than in PS. The introgression affected 11 volatile organic compounds (VOCs), the levels of which during ripening were generally higher in SC10-2 than in PS. Transcriptomic analysis from RNA-Seq revealed differentially expressed genes (DEGs) associated with the effects studied. For example, 909 DEGs were exclusive to the introgression, and only 23 DEGs were exclusive to postharvest ripening time. Major functions of the DEGs associated with introgression or ripening time were identified by cluster analysis. About 37 genes directly and/or indirectly affected the delay in ripening of SC10-2 compared with PS in general and, more particularly, the physiological and quality traits measured and, probably, the differential non-climacteric response. Of the former genes, we studied in more detail at least five that mapped in the introgression in linkage group (LG) X, and 32 outside it. CONCLUSION There is an apparent control of textural changes, VOCs and fruit ripening by an expression quantitative trait locus located in LG X together with a direct control on them due to genes presented in the introgression (CmTrpD, CmNADH1, CmTCP15, CmGDSL esterase/lipase, and CmHK4-like) and CmNAC18. © 2020 Society of Chemical Industry.
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Affiliation(s)
- Mohamed Zarid
- Department of Agronomical Engineering, Regional Campus of International Excellence 'Campus Mare Nostrum' (CMN), Technical University of Cartagena (UPCT), Cartagena, Spain
| | - Victor García-Carpintero
- Centro de Conservación y Mejora de la Agrodiversidad Valenciana (COMAV), Ciudad Politécnica de la Innovación, Universitat Politècnica de València (UPV), Valencia, Spain
| | - Cristina Esteras
- Centro de Conservación y Mejora de la Agrodiversidad Valenciana (COMAV), Ciudad Politécnica de la Innovación, Universitat Politècnica de València (UPV), Valencia, Spain
| | - Juan Esteva
- Department of Agronomical Engineering, Regional Campus of International Excellence 'Campus Mare Nostrum' (CMN), Technical University of Cartagena (UPCT), Cartagena, Spain
| | - María C Bueso
- Department of Applied Mathematics and Statistics, CMN, UPCT, Cartagena, Spain
| | - Joaquín Cañizares
- Centro de Conservación y Mejora de la Agrodiversidad Valenciana (COMAV), Ciudad Politécnica de la Innovación, Universitat Politècnica de València (UPV), Valencia, Spain
| | - María B Picó
- Centro de Conservación y Mejora de la Agrodiversidad Valenciana (COMAV), Ciudad Politécnica de la Innovación, Universitat Politècnica de València (UPV), Valencia, Spain
| | - Antonio J Monforte
- Instituto de Biología Molecular y Celular de Plantas (IBMCP), CSIC/Universidad Politécnica de Valencia (UPV), Ciudad Politécnica de la Innovación, Valencia, Spain
| | - J Pablo Fernández-Trujillo
- Department of Agronomical Engineering, Regional Campus of International Excellence 'Campus Mare Nostrum' (CMN), Technical University of Cartagena (UPCT), Cartagena, Spain
- Institute of Plant Biotechnology, CMN, UPCT, Cartagena, Spain
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5
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Comparative genomics of muskmelon reveals a potential role for retrotransposons in the modification of gene expression. Commun Biol 2020; 3:432. [PMID: 32792560 PMCID: PMC7426833 DOI: 10.1038/s42003-020-01172-0] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Accepted: 07/24/2020] [Indexed: 11/08/2022] Open
Abstract
Melon exhibits substantial natural variation especially in fruit ripening physiology, including both climacteric (ethylene-producing) and non-climacteric types. However, genomic mechanisms underlying such variation are not yet fully understood. Here, we report an Oxford Nanopore-based high-grade genome reference in the semi-climacteric cultivar Harukei-3 (378 Mb + 33,829 protein-coding genes), with an update of tissue-wide RNA-seq atlas in the Melonet-DB database. Comparison between Harukei-3 and DHL92, the first published melon genome, enabled identification of 24,758 one-to-one orthologue gene pairs, whereas others were candidates of copy number variation or presence/absence polymorphisms (PAPs). Further comparison based on 10 melon genome assemblies identified genome-wide PAPs of 415 retrotransposon Gag-like sequences. Of these, 160 showed fruit ripening-inducible expression, with 59.4% of the neighboring genes showing similar expression patterns (r > 0.8). Our results suggest that retrotransposons contributed to the modification of gene expression during diversification of melon genomes, and may affect fruit ripening-inducible gene expression.
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Pascual L, Yan J, Pujol M, Monforte AJ, Picó B, Martín-Hernández AM. CmVPS41 Is a General Gatekeeper for Resistance to Cucumber Mosaic Virus Phloem Entry in Melon. FRONTIERS IN PLANT SCIENCE 2019; 10:1219. [PMID: 31632432 PMCID: PMC6781857 DOI: 10.3389/fpls.2019.01219] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Accepted: 09/04/2019] [Indexed: 05/19/2023]
Abstract
Melon production is often compromised by viral diseases, which cannot be treated with chemicals. Therefore, the use of genetic resistances is the main strategy for generating crops resistant to viruses. Resistance to Cucumber mosaic virus (CMV) in melon is scarcely described in few accessions. Until recently, the only known resistant accessions were Freeman's Cucumber and PI 161375, cultivar Songwhan Charmi (SC). Resistance to CMV in melon is recessive and generally oligogenic and quantitative. However, in SC, the resistance to CMV strains of subgroup II is monogenic, depending only on one gene, cmv1, which is able to stop CMV movement by restricting the virus to the bundle sheath cells and preventing a systemic infection. This restriction depends on the viral movement protein (MP). Chimeric viruses carrying the MP of subgroup II strains, like the strain LS (CMV-LS), are restricted in the bundle sheath cells, whereas those carrying MP from subgroup I, like the strain FNY (CMV-FNY), are able to overcome this restriction. cmv1 encodes a vacuolar protein sorting 41 (CmVPS41), a protein involved in the transport of cargo proteins from the Golgi to the vacuole through late endosomes. We have analyzed the variability of the gene CmVPS41 in a set of 52 melon accessions belonging to 15 melon groups, both from the spp melo and the spp agrestis. We have identified 16 different haplotypes, encoding 12 different CmVPS41 protein variants. Challenging members of all haplotypes with CMV-LS, we have identified nine new resistant accessions. The resistance correlates with the presence of two mutations, either L348R, previously found in the accession SC and present in other three melon genotypes, or G85E, present in Freeman's Cucumber and found also in four additional melon genotypes. Moreover, the new resistant accessions belong to three different melon horticultural groups, Conomon, Makuwa, and Dudaim. In the new resistant accessions, the virus was able to replicate and move cell to cell, but was not able to reach the phloem. Therefore, resistance to phloem entry seems to be a general strategy in melon controlled by CmVPS41. Finally, the newly reported resistant accessions broaden the possibilities for the use of genetic resistances in new melon breeding strategies.
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Affiliation(s)
- Laura Pascual
- Centre for Research in Agricultural Genomics (CRAG) CSIC-IRTA-UAB-UB, C/Vall Moronta, Edifici CRAG, Bellaterra (Cerdanyola del Vallés), Barcelona, Spain
| | - Jinqiang Yan
- Centre for Research in Agricultural Genomics (CRAG) CSIC-IRTA-UAB-UB, C/Vall Moronta, Edifici CRAG, Bellaterra (Cerdanyola del Vallés), Barcelona, Spain
| | - Marta Pujol
- Centre for Research in Agricultural Genomics (CRAG) CSIC-IRTA-UAB-UB, C/Vall Moronta, Edifici CRAG, Bellaterra (Cerdanyola del Vallés), Barcelona, Spain
- Institut de Recerca i Tecnologia Agroalimentàries (IRTA), Campus UAB, Bellaterra, Barcelona, Spain
| | - Antonio J. Monforte
- Instituto de Biología Molecular y Celular de Plantas (IBMCP), Universitat Politècnica de València (UPV)-Consejo Superior de Investigaciones Científicas (CSIC), Valencia, Spain
| | - Belén Picó
- COMAV, Institute for the Conservation and Breeding of Agricultural Biodiversity, Universitat Politècnica de València (UPV), Camino de Vera s/n, Valencia, Spain
| | - Ana Montserrat Martín-Hernández
- Centre for Research in Agricultural Genomics (CRAG) CSIC-IRTA-UAB-UB, C/Vall Moronta, Edifici CRAG, Bellaterra (Cerdanyola del Vallés), Barcelona, Spain
- Institut de Recerca i Tecnologia Agroalimentàries (IRTA), Campus UAB, Bellaterra, Barcelona, Spain
- *Correspondence: Ana Montserrat Martín-Hernández,
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Morata J, Tormo M, Alexiou KG, Vives C, Ramos-Onsins SE, Garcia-Mas J, Casacuberta JM. The Evolutionary Consequences of Transposon-Related Pericentromer Expansion in Melon. Genome Biol Evol 2018; 10:1584-1595. [PMID: 29901717 PMCID: PMC6009578 DOI: 10.1093/gbe/evy115] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/04/2018] [Indexed: 12/16/2022] Open
Abstract
Transposable elements (TEs) are a major driver of plant genome evolution. A part from being a rich source of new genes and regulatory sequences, TEs can also affect plant genome evolution by modifying genome size and shaping chromosome structure. TEs tend to concentrate in heterochromatic pericentromeric regions and their proliferation may expand these regions. Here, we show that after the split of melon and cucumber, TEs have expanded the pericentromeric regions of melon chromosomes that, probably as a consequence, show a very low recombination frequency. In contrast, TEs have not proliferated to a high extent in cucumber, which has small TE-dense pericentromeric regions and shows a relatively constant recombination rate along chromosomes. These differences in chromosome structure also translate in differences in gene nucleotide diversity. Although gene nucleotide diversity is essentially constant along cucumber chromosomes, melon chromosomes show a bimodal pattern of genetic variability, with a gene-poor region where variability is negatively correlated with gene density. Interestingly, genes are not homogeneously distributed in melon, and the high variable low-recombining pericentromeric regions show a higher concentration of melon-specific genes whereas genes shared with cucumber and other plants are essentially found in gene-rich chromosomal arms. The results presented here suggest that melon pericentromeric regions may allow gene sequences to evolve more freely than in other chromosomal compartments which may allow new ORFs to arise and eventually be selected. These results show that TEs can drastically change the structure of chromosomes creating different chromosomal compartments imposing different constraints for gene evolution.
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Affiliation(s)
- Jordi Morata
- Center for Research in Agricultural Genomics, CRAG (CSIC-IRTA-UAB-UB), Campus UAB, Cerdanyola del Vallès, Barcelona, Spain
| | - Marc Tormo
- Center for Research in Agricultural Genomics, CRAG (CSIC-IRTA-UAB-UB), Campus UAB, Cerdanyola del Vallès, Barcelona, Spain
| | - Konstantinos G Alexiou
- Institut de Recerca i Tecnologia Agroalimentàries, Center for Research in Agricultural Genomics, CRAG (CSIC-IRTA-UAB-UB), Campus UAB, Cerdanyola del Vallès, Barcelona, Spain
| | - Cristina Vives
- Center for Research in Agricultural Genomics, CRAG (CSIC-IRTA-UAB-UB), Campus UAB, Cerdanyola del Vallès, Barcelona, Spain
| | - Sebastián E Ramos-Onsins
- Center for Research in Agricultural Genomics, CRAG (CSIC-IRTA-UAB-UB), Campus UAB, Cerdanyola del Vallès, Barcelona, Spain
| | - Jordi Garcia-Mas
- Institut de Recerca i Tecnologia Agroalimentàries, Center for Research in Agricultural Genomics, CRAG (CSIC-IRTA-UAB-UB), Campus UAB, Cerdanyola del Vallès, Barcelona, Spain
| | - Josep M Casacuberta
- Center for Research in Agricultural Genomics, CRAG (CSIC-IRTA-UAB-UB), Campus UAB, Cerdanyola del Vallès, Barcelona, Spain
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Petit J, Bres C, Mauxion JP, Bakan B, Rothan C. Breeding for cuticle-associated traits in crop species: traits, targets, and strategies. JOURNAL OF EXPERIMENTAL BOTANY 2017; 68:5369-5387. [PMID: 29036305 DOI: 10.1093/jxb/erx341] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Accepted: 09/14/2017] [Indexed: 05/18/2023]
Abstract
Improving crop productivity and quality while promoting sustainable agriculture have become major goals in plant breeding. The cuticle is a natural film covering the aerial organs of plants and consists of lipid polyesters covered and embedded with wax. The cuticle protects plants against water loss and pathogens and affects traits with strong impacts on crop quality such as, for horticultural crops, fruit brightness, cracking, russeting, netting, and shelf life. Here we provide an overview of the most important cuticle-associated traits that can be targeted for crop improvement. To date, most studies on cuticle-associated traits aimed at crop breeding have been done on fleshy fruits. Less information is available for staple crops such as rice, wheat or maize. Here we present new insights into cuticle formation and properties resulting from the study of genetic resources available for the various crop species. Our review also covers the current strategies and tools aimed at exploiting available natural and artificially induced genetic diversity and the technologies used to transfer the beneficial alleles affecting cuticle-associated traits to commercial varieties.
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Affiliation(s)
- Johann Petit
- UMR 1332 BFP, INRA, Univ. Bordeaux, F-33140 Villenave d'Ornon, France
| | - Cécile Bres
- UMR 1332 BFP, INRA, Univ. Bordeaux, F-33140 Villenave d'Ornon, France
| | | | | | - Christophe Rothan
- UMR 1332 BFP, INRA, Univ. Bordeaux, F-33140 Villenave d'Ornon, France
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9
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Argyris JM, Díaz A, Ruggieri V, Fernández M, Jahrmann T, Gibon Y, Picó B, Martín-Hernández AM, Monforte AJ, Garcia-Mas J. QTL Analyses in Multiple Populations Employed for the Fine Mapping and Identification of Candidate Genes at a Locus Affecting Sugar Accumulation in Melon ( Cucumis melo L.). FRONTIERS IN PLANT SCIENCE 2017; 8:1679. [PMID: 29018473 PMCID: PMC5623194 DOI: 10.3389/fpls.2017.01679] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2017] [Accepted: 09/12/2017] [Indexed: 05/24/2023]
Abstract
Sugar content is the major determinant of both fruit quality and consumer acceptance in melon (Cucumis melo L), and is a primary target for crop improvement. Near-isogenic lines (NILs) derived from the intraspecific cross between a "Piel de Sapo" (PS) type and the exotic cultivar "Songwhan Charmi" (SC), and several populations generated from the cross of PS × Ames 24294 ("Trigonus"), a wild melon, were used to identify QTL related to sugar and organic acid composition. Seventy-eight QTL were detected across several locations and different years, with three important clusters related to sugar content located on chromosomes 4, 5, and 7. Two PS × SC NILs (SC5-1 and SC5-2) sharing a common genomic interval of 1.7 Mb at the top of chromosome 5 contained QTL reducing soluble solids content (SSC) and sucrose content by an average of 29 and 68%, respectively. This cluster collocated with QTL affecting sugar content identified in other studies in lines developed from the PS × SC cross and supported the presence of a stable consensus locus involved in sugar accumulation that we named SUCQSC5.1. QTL reducing soluble solids and sucrose content identified in the "Trigonus" mapping populations, as well as QTL identified in previous studies from other ssp. agrestis sources, collocated with SUCQSC5.1, suggesting that they may be allelic and implying a role in domestication. In subNILs derived from the PS × SC5-1 cross, SUCQSC5.1 reduced SSC and sucrose content by an average of 18 and 34%, respectively, and was fine-mapped to a 56.1 kb interval containing four genes. Expression analysis of the candidate genes in mature fruit showed differences between the subNILs with PS alleles that were "high" sugar and SC alleles of "low" sugar phenotypes for MELO3C014519, encoding a putative BEL1-like homeodomain protein. Sequence differences in the gene predicted to affect protein function were restricted to SC and other ssp. agrestis cultivar groups. These results provide the basis for further investigation of genes affecting sugar accumulation in melon.
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Affiliation(s)
- Jason M. Argyris
- Centre for Research in Agricultural Genomics (CSIC-IRTA-UAB-UB), Barcelona, Spain
- Institut de Recerca i Tecnologia Agroalimentàries, Barcelona, Spain
| | - Aurora Díaz
- Instituto de Biología Molecular y Celular de Plantas, Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas, Valencia, Spain
| | - Valentino Ruggieri
- Centre for Research in Agricultural Genomics (CSIC-IRTA-UAB-UB), Barcelona, Spain
- Institut de Recerca i Tecnologia Agroalimentàries, Barcelona, Spain
| | | | | | - Yves Gibon
- UMR1332 Biologie du Fruit et Pathologie, Plateforme Métabolome Bordeaux, INRA, University of Bordeaux, Villenave d'Ornon, France
| | - Belén Picó
- Institute for the Conservation and Breeding of the Agricultural Biodiversity, Universitat Politècnica de València (COMAV-UPV), Valencia, Spain
| | - Ana M. Martín-Hernández
- Centre for Research in Agricultural Genomics (CSIC-IRTA-UAB-UB), Barcelona, Spain
- Institut de Recerca i Tecnologia Agroalimentàries, Barcelona, Spain
| | - Antonio J. Monforte
- Instituto de Biología Molecular y Celular de Plantas, Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas, Valencia, Spain
| | - Jordi Garcia-Mas
- Centre for Research in Agricultural Genomics (CSIC-IRTA-UAB-UB), Barcelona, Spain
- Institut de Recerca i Tecnologia Agroalimentàries, Barcelona, Spain
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10
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Giner A, Pascual L, Bourgeois M, Gyetvai G, Rios P, Picó B, Troadec C, Bendahmane A, Garcia-Mas J, Martín-Hernández AM. A mutation in the melon Vacuolar Protein Sorting 41prevents systemic infection of Cucumber mosaic virus. Sci Rep 2017; 7:10471. [PMID: 28874719 PMCID: PMC5585375 DOI: 10.1038/s41598-017-10783-3] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2017] [Accepted: 08/14/2017] [Indexed: 01/07/2023] Open
Abstract
In the melon exotic accession PI 161375, the gene cmv1, confers recessive resistance to Cucumber mosaic virus (CMV) strains of subgroup II. cmv1 prevents the systemic infection by restricting the virus to the bundle sheath cells and impeding viral loading to the phloem. Here we report the fine mapping and cloning of cmv1. Screening of an F2 population reduced the cmv1 region to a 132 Kb interval that includes a Vacuolar Protein Sorting 41 gene. CmVPS41 is conserved among plants, animals and yeast and is required for post-Golgi vesicle trafficking towards the vacuole. We have validated CmVPS41 as the gene responsible for the resistance, both by generating CMV susceptible transgenic melon plants, expressing the susceptible allele in the resistant cultivar and by characterizing CmVPS41 TILLING mutants with reduced susceptibility to CMV. Finally, a core collection of 52 melon accessions allowed us to identify a single amino acid substitution (L348R) as the only polymorphism associated with the resistant phenotype. CmVPS41 is the first natural recessive resistance gene found to be involved in viral transport and its cellular function suggests that CMV might use CmVPS41 for its own transport towards the phloem.
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Affiliation(s)
- Ana Giner
- Centre for Research in Agricultural Genomics (CRAG) CSIC-IRTA-UAB-UB, C/Vall Moronta, Edifici CRAG, Bellaterra (Cerdanyola del Vallés), 08193, Barcelona, Spain
| | - Laura Pascual
- Centre for Research in Agricultural Genomics (CRAG) CSIC-IRTA-UAB-UB, C/Vall Moronta, Edifici CRAG, Bellaterra (Cerdanyola del Vallés), 08193, Barcelona, Spain
- Unidad de Genética, Departamento de Biotecnología-Biología Vegetal, Escuela Técnica Superior de Ingenieros Agrónomos, Universidad Politécnica de Madrid, Madrid, Spain
| | - Michael Bourgeois
- Centre for Research in Agricultural Genomics (CRAG) CSIC-IRTA-UAB-UB, C/Vall Moronta, Edifici CRAG, Bellaterra (Cerdanyola del Vallés), 08193, Barcelona, Spain
| | - Gabor Gyetvai
- Centre for Research in Agricultural Genomics (CRAG) CSIC-IRTA-UAB-UB, C/Vall Moronta, Edifici CRAG, Bellaterra (Cerdanyola del Vallés), 08193, Barcelona, Spain
- KWS SAAT SE Grimsehlstr. 31, 37555, Einbeck, Germany
| | - Pablo Rios
- Centre for Research in Agricultural Genomics (CRAG) CSIC-IRTA-UAB-UB, C/Vall Moronta, Edifici CRAG, Bellaterra (Cerdanyola del Vallés), 08193, Barcelona, Spain
- Syngenta España S.A., C/Cartabona 10, 04710, El Ejido, Spain
| | - Belén Picó
- COMAV, Institute for the Conservation and Breeding of Agricultural Biodiversity, Universitat Politècnica de València (UPV), Camino de Vera s/n, 46022, Valencia, Spain
| | - Christelle Troadec
- INRA-CNRS, UMR1165, Unité de Recherche en Génomique Végétale, Evry, France
| | - Abdel Bendahmane
- INRA-CNRS, UMR1165, Unité de Recherche en Génomique Végétale, Evry, France
| | - Jordi Garcia-Mas
- Centre for Research in Agricultural Genomics (CRAG) CSIC-IRTA-UAB-UB, C/Vall Moronta, Edifici CRAG, Bellaterra (Cerdanyola del Vallés), 08193, Barcelona, Spain
- IRTA (Institut de Recerca i Tecnologia Agroalimentàries), Barcelona, Spain
| | - Ana Montserrat Martín-Hernández
- Centre for Research in Agricultural Genomics (CRAG) CSIC-IRTA-UAB-UB, C/Vall Moronta, Edifici CRAG, Bellaterra (Cerdanyola del Vallés), 08193, Barcelona, Spain.
- IRTA (Institut de Recerca i Tecnologia Agroalimentàries), Barcelona, Spain.
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Pereira L, Pujol M, Garcia-Mas J, Phillips MA. Non-invasive quantification of ethylene in attached fruit headspace at 1 p.p.b. by gas chromatography-mass spectrometry. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2017; 91:172-183. [PMID: 28370685 DOI: 10.1111/tpj.13545] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Revised: 03/01/2017] [Accepted: 03/17/2017] [Indexed: 05/05/2023]
Abstract
Ethylene is a gaseous plant hormone involved in defense, adaptations to environmental stress and fruit ripening. Its relevance to the latter makes its detection highly useful for physiologists interested in the onset of ripening. Produced as a sharp peak during the respiratory burst, ethylene is biologically active at tens of nl L-1 . Reliable quantification at such concentrations generally requires specialized instrumentation. Here we present a rapid, high-sensitivity method for detecting ethylene in attached fruit using a conventional gas chromatography-mass spectrometry (GC-MS) system and in situ headspace collection chambers. We apply this method to melon (Cucumis melo L.), a unique species consisting of climacteric and non-climacteric varieties, with a high variation in the climacteric phenotype among climacteric types. Using a population of recombinant inbred lines (RILs) derived from highly climacteric ('Védrantais', cantalupensis type) and non-climacteric ('Piel de Sapo', inodorus type) parental lines, we observed a significant variation for the intensity, onset and duration of the ethylene burst during fruit ripening. Our method does not require concentration, sampling times over 1 h or fruit harvest. We achieved a limit of detection of 0.41 ± 0.04 nl L-1 and a limit of quantification of 1.37 ± 0.13 nl L-1 with an analysis time per sample of 2.6 min. Validation of the analytical method indicated that linearity (>98%), precision (coefficient of variation ≤2%) and sensitivity compared favorably with dedicated optical sensors. This study adds to evidence of the characteristic climacteric ethylene burst as a complex trait whose intensity in our RIL population lies along a continuum in addition to two extremes.
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Affiliation(s)
- Lara Pereira
- IRTA, Center for Research in Agricultural Genomics (IRTA- CSIC- UAB-UB), Edifici CRAG, Bellaterra, Barcelona, 08193, Spain
| | - Marta Pujol
- IRTA, Center for Research in Agricultural Genomics (IRTA- CSIC- UAB-UB), Edifici CRAG, Bellaterra, Barcelona, 08193, Spain
| | - Jordi Garcia-Mas
- IRTA, Center for Research in Agricultural Genomics (IRTA- CSIC- UAB-UB), Edifici CRAG, Bellaterra, Barcelona, 08193, Spain
| | - Michael A Phillips
- Department of Biology, University of Toronto-Mississauga, Mississauga, ON, L5L 1C6, Canada
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Perpiñá G, Esteras C, Gibon Y, Monforte AJ, Picó B. A new genomic library of melon introgression lines in a cantaloupe genetic background for dissecting desirable agronomical traits. BMC PLANT BIOLOGY 2016; 16:154. [PMID: 27390934 PMCID: PMC4938994 DOI: 10.1186/s12870-016-0842-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2016] [Accepted: 06/28/2016] [Indexed: 05/22/2023]
Abstract
BACKGROUND Genomic libraries of introgression lines (ILs) consist of collections of homozygous lines with a single chromosomal introgression from a donor genotype in a common, usually elite, genetic background, representing the whole donor genome in the full collection. Currently, the only available melon IL collection was generated using Piel de sapo (var. inodorus) as the recurrent background. ILs are not available in genetic backgrounds representing other important market class cultivars, such as the cantalupensis. The recent availability of genomic tools in melon, such as SNP collections and genetic maps, facilitates the development of such mapping populations. RESULTS We have developed a new genomic library of introgression lines from the Japanese cv. Ginsen Makuwa (var. makuwa) into the French Charentais-type cv. Vedrantais (var. cantalupensis) genetic background. In order to speed up the breeding program, we applied medium-throughput SNP genotyping with Sequenom MassARRAY technology in early backcross generations and High Resolution Melting in the final steps. The phenotyping of the backcross generations and of the final set of 27 ILs (averaging 1.3 introgressions/plant and covering nearly 100 % of the donor genome), in three environments, allowed the detection of stable QTLs for flowering and fruit quality traits, including some that affect fruit size in chromosomes 6 and 11, others that change fruit shape in chromosomes 7 and 11, others that change flesh color in chromosomes 2, 8 and 9, and still others that increase sucrose content and delay climacteric behavior in chromosomes 5 and 10. CONCLUSIONS A new melon IL collection in the Charentais genetic background has been developed. Genomic regions that consistently affect flowering and fruit quality traits have been identified, which demonstrates the suitability of this collection for dissecting complex traits in melon. Additionally, pre-breeding lines with new, commercially interesting phenotypes have been observed, including delayed climacteric ripening associated to higher sucrose levels, which is of great interest for Charentais cultivar breeding.
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Affiliation(s)
- Gorka Perpiñá
- />Instituto de Conservación y Mejora de la Agrodiversidad, Universitat Politècnica de València (COMAV-UPV), Camino de Vera s/n, 46022 Valencia, Spain
| | - Cristina Esteras
- />Instituto de Conservación y Mejora de la Agrodiversidad, Universitat Politècnica de València (COMAV-UPV), Camino de Vera s/n, 46022 Valencia, Spain
| | - Yves Gibon
- />UMR1332 Biologie du Fruit et Pathologie and Plateforme Métabolome, INRA-Bordeaux and Bordeaux University, 71 av. Edouard Bourlaux, 33140 Villenave d’Ornon, France
| | - Antonio J. Monforte
- />Instituto de Biología Molecular y Celular de Plantas (IBMCP) UPV-CSIC, Ciudad Politécnica de la Innovación Edificio 8E, Ingeniero Fausto Elio s/n, 46022 Valencia, Spain
| | - Belén Picó
- />Instituto de Conservación y Mejora de la Agrodiversidad, Universitat Politècnica de València (COMAV-UPV), Camino de Vera s/n, 46022 Valencia, Spain
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Más P, Martínez-García J, Riechmann JL, Pelaz S. ICREA Workshop: from model systems to crops - challenges for a new era in plant biology. PHYSIOLOGIA PLANTARUM 2015; 155:1-3. [PMID: 26118846 DOI: 10.1111/ppl.12360] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2015] [Accepted: 06/26/2015] [Indexed: 06/04/2023]
Affiliation(s)
- Paloma Más
- Centre for Research in Agricultural Genomics, CSIC-IRTA-UAB-UB, Campus UAB, 08193 Barcelona, Spain
| | - Jaime Martínez-García
- Centre for Research in Agricultural Genomics, CSIC-IRTA-UAB-UB, Campus UAB, 08193 Barcelona, Spain
- ICREA (Institució Catalana de Recerca i EstudisAvançats), Barcelona, Spain
| | - José Luis Riechmann
- Centre for Research in Agricultural Genomics, CSIC-IRTA-UAB-UB, Campus UAB, 08193 Barcelona, Spain
- ICREA (Institució Catalana de Recerca i EstudisAvançats), Barcelona, Spain
| | - Soraya Pelaz
- Centre for Research in Agricultural Genomics, CSIC-IRTA-UAB-UB, Campus UAB, 08193 Barcelona, Spain
- ICREA (Institució Catalana de Recerca i EstudisAvançats), Barcelona, Spain
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