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Mayobre C, Santo Domingo M, Özkan EN, Fernández-Borbolla A, Ruiz-Lasierra J, Garcia-Mas J, Pujol M. Genetic regulation of volatile production in two melon introgression line collections with contrasting ripening behavior. HORTICULTURE RESEARCH 2024; 11:uhae020. [PMID: 38469382 PMCID: PMC10925849 DOI: 10.1093/hr/uhae020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Accepted: 01/10/2024] [Indexed: 03/13/2024]
Abstract
The importance of melon aroma in determining fruit quality has been highlighted in recent years. The fruit volatile profile is influenced by the type of fruit ripening. Non-climacteric fruits contain predominantly aldehydes, while climacteric fruits mainly produce esters. Several genes have been described to participate in volatile organic compounds (VOCs) biosynthesis pathways, but knowledge in this area is still incomplete. In this work we analysed the volatile profile of two reciprocal Introgression Line (IL) collections generated from a cross between 'Piel de Sapo' (PS) and 'Védrantais' (VED) melons, differing in their aroma profile and ripening behaviour. SPME GC-MS was performed to identify genes responsible for VOCs formation. More than 1000 QTLs for many volatiles were detected taken together both populations. Introgressions on chromosomes 3, 5, 6, 7 and 8 modified ester-aldehyde balance and were correlated to ripening changes in both genetic backgrounds. Some previously identified QTLs for fruit ripening might be involved in these phenotypes, such as ETHQV8.1 on chromosome 8 and ETHQV6.3 on chromosome 6. PS alleles on chromosomes 2, 6, 10 and 11 were found to increase ester content when introgressed in VED melons. Terpenes showed to be affected by several genomic regions not related to ripening. In addition, several candidate genes have been hypothesized to be responsible for some of the QTLs detected. The analysis of volatile compounds in two reciprocal IL collections has increased our understanding of the relationship between ripening and aroma and offers valuable plant material to improve food quality in melon breeding programs.
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Affiliation(s)
- Carlos Mayobre
- Centre for Research in Agricultural Genomics (CRAG) CSIC-IRTA-UAB-UB, Edifici CRAG, Campus UAB, 08193 Bellaterra, Barcelona, Spain
| | - Miguel Santo Domingo
- Centre for Research in Agricultural Genomics (CRAG) CSIC-IRTA-UAB-UB, Edifici CRAG, Campus UAB, 08193 Bellaterra, Barcelona, Spain
| | - Elif Nur Özkan
- Centre for Research in Agricultural Genomics (CRAG) CSIC-IRTA-UAB-UB, Edifici CRAG, Campus UAB, 08193 Bellaterra, Barcelona, Spain
| | - Andrés Fernández-Borbolla
- Centre for Research in Agricultural Genomics (CRAG) CSIC-IRTA-UAB-UB, Edifici CRAG, Campus UAB, 08193 Bellaterra, Barcelona, Spain
| | - Javier Ruiz-Lasierra
- Centre for Research in Agricultural Genomics (CRAG) CSIC-IRTA-UAB-UB, Edifici CRAG, Campus UAB, 08193 Bellaterra, Barcelona, Spain
| | - Jordi Garcia-Mas
- Centre for Research in Agricultural Genomics (CRAG) CSIC-IRTA-UAB-UB, Edifici CRAG, Campus UAB, 08193 Bellaterra, Barcelona, Spain
- Institut de Recerca i Tecnologia Agroalimentàries (IRTA), Edifici CRAG, Campus UAB, 08193 Bellaterra, Barcelona, Spain
| | - Marta Pujol
- Centre for Research in Agricultural Genomics (CRAG) CSIC-IRTA-UAB-UB, Edifici CRAG, Campus UAB, 08193 Bellaterra, Barcelona, Spain
- Institut de Recerca i Tecnologia Agroalimentàries (IRTA), Edifici CRAG, Campus UAB, 08193 Bellaterra, Barcelona, Spain
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Shahwar D, Khan Z, Park Y. Molecular Marker-Assisted Mapping, Candidate Gene Identification, and Breeding in Melon ( Cucumis melo L.): A Review. Int J Mol Sci 2023; 24:15490. [PMID: 37895169 PMCID: PMC10607903 DOI: 10.3390/ijms242015490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Revised: 10/18/2023] [Accepted: 10/18/2023] [Indexed: 10/29/2023] Open
Abstract
Melon (Cucumis melo L.) is an important crop that is cultivated worldwide for its fleshy fruit. Understanding the genetic basis of a plant's qualitative and quantitative traits is essential for developing consumer-favored varieties. This review presents genetic and molecular advances related to qualitative and quantitative phenotypic traits and biochemical compounds in melons. This information guides trait incorporation and the production of novel varieties with desirable horticultural and economic characteristics and yield performance. This review summarizes the quantitative trait loci, candidate genes, and development of molecular markers related to plant architecture, branching patterns, floral attributes (sex expression and male sterility), fruit attributes (shape, rind and flesh color, yield, biochemical compounds, sugar content, and netting), and seed attributes (seed coat color and size). The findings discussed in this review will enhance demand-driven breeding to produce cultivars that benefit consumers and melon breeders.
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Affiliation(s)
- Durre Shahwar
- Department of Horticultural Bioscience, Pusan National University, Miryang 50463, Republic of Korea;
| | - Zeba Khan
- Center for Agricultural Education, Faculty of Agricultural Sciences, Aligarh Muslim University, Aligarh 202002, India;
| | - Younghoon Park
- Department of Horticultural Bioscience, Pusan National University, Miryang 50463, Republic of Korea;
- Life and Industry Convergence Research Institute, Pusan National University, Miryang 50463, Republic of Korea
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Zhao H, Zhang T, Meng X, Song J, Zhang C, Gao P. Genetic Mapping and QTL Analysis of Fruit Traits in Melon ( Cucumis melo L.). Curr Issues Mol Biol 2023; 45:3419-3433. [PMID: 37185748 PMCID: PMC10137213 DOI: 10.3390/cimb45040224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Revised: 04/07/2023] [Accepted: 04/11/2023] [Indexed: 05/17/2023] Open
Abstract
Melon (Cucumis melo L.) is an important horticultural cash crop and its quality traits directly affect consumer choice and market price. These traits are controlled by genetic as well as environmental factors. In this study, a quantitative trait locus (QTL) mapping strategy was used to identify the potential genetic loci controlling quality traits of melons (i.e., exocarp and pericarp firmness and soluble solid content) based on newly derived whole-genome single nucleotide polymorphism-based cleaved amplified polymorphic sequence (SNP-CAPS) markers. Specifically, SNPs of two melon varieties, M4-5 and M1-15, as revealed by whole-genome sequencing, were converted to the CAPS markers, which were used to construct a genetic linkage map comprising 12 chromosomes with a total length of 1414.88 cM, in the F2 population of M4-5 and M1-15. The six identified QTLs included: SSC6.1 and SSC11.1 related to soluble solid content; EF12.1 associated with exocarp firmness; and EPF3.1, EPF3.2 and EPF7.1 related to edible pericarp firmness. These genes were located on five chromosomes (3, 6, 7, 11, and 12) in the flanking regions of the CAPS markers. Moreover, the newly developed CAPS markers will be useful in guiding genetic engineering and molecular breeding in melon.
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Affiliation(s)
- Haiyong Zhao
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, No. 600, Changjiang Road, Harbin 150030, China
- Key Laboratory of Biology and Genetic Improvement of Horticulture Crops (Northeast Region), Ministry of Agriculture and Rural Affairs, Harbin 150030, China
| | - Taifeng Zhang
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, No. 600, Changjiang Road, Harbin 150030, China
- Key Laboratory of Biology and Genetic Improvement of Horticulture Crops (Northeast Region), Ministry of Agriculture and Rural Affairs, Harbin 150030, China
| | - Xiaobing Meng
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, No. 600, Changjiang Road, Harbin 150030, China
- Key Laboratory of Biology and Genetic Improvement of Horticulture Crops (Northeast Region), Ministry of Agriculture and Rural Affairs, Harbin 150030, China
| | - Jiayan Song
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, No. 600, Changjiang Road, Harbin 150030, China
- Key Laboratory of Biology and Genetic Improvement of Horticulture Crops (Northeast Region), Ministry of Agriculture and Rural Affairs, Harbin 150030, China
| | - Chen Zhang
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, No. 600, Changjiang Road, Harbin 150030, China
- Key Laboratory of Biology and Genetic Improvement of Horticulture Crops (Northeast Region), Ministry of Agriculture and Rural Affairs, Harbin 150030, China
| | - Peng Gao
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, No. 600, Changjiang Road, Harbin 150030, China
- Key Laboratory of Biology and Genetic Improvement of Horticulture Crops (Northeast Region), Ministry of Agriculture and Rural Affairs, Harbin 150030, China
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Santos IGD, Verzegnazzi AL, Edwards J, Frei UK, Boerman N, Tonello Zuffo L, Pires LPM, de La Fuente G, Lübberstedt T. Usefulness of temperate-adapted maize lines developed by doubled haploid and single-seed descent methods. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2022; 135:1829-1841. [PMID: 35305125 DOI: 10.1007/s00122-022-04075-2] [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: 08/09/2021] [Accepted: 03/01/2022] [Indexed: 06/14/2023]
Abstract
Spontaneous haploid genome doubling is not associated with undesirable linkage drag effects. The presence of spontaneous doubling genes allows maximum exploitation of variability from the temperate-adapted BS39 population Tropical non-elite maize (Zea mays L.) germplasm, such as BS39, provides a unique opportunity for broadening the genetic base of U.S. Corn Belt germplasm. In vivo doubled haploid (DH) technology has been used to efficiently exploit non-elite germplasm. It can help to purge deleterious recessive alleles. The objectives of this study were to determine the usefulness of BS39-derived inbred lines using both SSD and DH methods, to determine the impact of spontaneous as compared with artificial haploid genome doubling on genetic variance among BS39-derived DH lines, and to identify SNP markers associated with agronomic traits among BS39 inbreds monitored at testcross level. We developed two sets of inbred lines directly from BS39 by DH and SSD methods, named BS39_DH and BS39_SSD. Additionally, two sets were derived from a cross between BS39 and A427 (SHGD donor) by DH and SSD methods, named BS39 × A427_DH and BS39 × A427_SSD, respectively. Grain yield, moisture, plant height, ear height, stalk lodging, and root lodging were measured to estimate genetic parameters. For genome-wide association analysis, inbred lines were genotyped using genotype-by-sequencing and Diversity Array Technology Sequencing (DArTSeq). Some BS39-derived inbred lines performed better than elite germplasm inbreds and all sets showed significant genetic variance. The presence of spontaneous haploid genome doubling genes did not affect performance of inbred lines. Five SNPs were significant and three of them located within genes related to plant development or abiotic stresses. These results demonstrate the potential of BS39 to add novel alleles to temperate elite germplasm.
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Affiliation(s)
| | | | - Jode Edwards
- USDA-ARS, Corn Insects and Crop Genetics Research Unit, Ames, IA, USA
| | - Ursula K Frei
- Department of Agronomy, Iowa State University, Ames, IA, USA
| | - Nicholas Boerman
- USDA-ARS, Southern Plains Range Research Station, Woodward, OK, USA
| | - Leandro Tonello Zuffo
- Department of Plant Sciences, Federal University of Viçosa, Viçosa, Minas Gerais, Brazil
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Du X, Liu H, Zhu Z, Liu S, Song Z, Xia L, Zhao J, Luan F, Liu S. Identification of Candidate Chromosome Region Related to Melon ( Cucumis melo L.) Fruit Surface Groove Trait Through Biparental Genetic Mapping and Genome-Wide Association Study. FRONTIERS IN PLANT SCIENCE 2022; 13:828287. [PMID: 35463445 PMCID: PMC9022103 DOI: 10.3389/fpls.2022.828287] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Accepted: 03/03/2022] [Indexed: 06/14/2023]
Abstract
The melon fruit surface groove (fsg) not only affects peel structure and causes stress-induced fruit cracking but also fits consumers' requirements in different regions. In this study, genetic inheritance analysis of three F2 populations derived from six parental lines revealed that the fsg trait is controlled by a simple recessive inherited gene. Through bulked segregant analysis sequencing (BSA-seq), the Cmfsg locus was detected in an 8.96 Mb interval on chromosome 11 and then initially mapped to a region of approximately 1.15 Mb. Further fine mapping with a large F2 population including 1,200 plants narrowed this region to 207 kb containing 11 genes. A genome-wide association study (GWAS) with 187 melon accessions also produced the same chromosome region for the Cmfsg locus. Due to the rare molecular markers and lack of mutations in the coding and promoter regions of the 11 candidate genes in the fine-mapped interval, we conducted in silico BSA to explore the natural melon panel to predict candidate genes for the Cmfsg locus. A 1.07 kb segment upstream of MELO3C019694.2 (annotated as the AGAMOUS MADS-box transcription factor) exhibited a correlation with the grooved and non-grooved accessions among the F2 individuals, and a natural panel consisted of 17 melon accessions. The expression level of MELO3C019694.2 in the pericarp was higher in grooved lines than in non-grooved lines and was specifically expressed in fruit compared with other tissues (female flower, male flower, root, and leaf). This work provides fundamental information for further research on melon fsg trait formation and molecular markers for melon breeding.
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Affiliation(s)
- Xin Du
- Key Laboratory of Biology and Genetic Improvement of Horticulture Crops (Northeast Region), Ministry of Agriculture and Rural Affairs, Northeast Agricultural University, Harbin, China
- Horticulture and Landscape Architecture College, Northeast Agricultural University, Harbin, China
| | - Hongyu Liu
- Key Laboratory of Biology and Genetic Improvement of Horticulture Crops (Northeast Region), Ministry of Agriculture and Rural Affairs, Northeast Agricultural University, Harbin, China
- Horticulture and Landscape Architecture College, Northeast Agricultural University, Harbin, China
| | - Zicheng Zhu
- Key Laboratory of Biology and Genetic Improvement of Horticulture Crops (Northeast Region), Ministry of Agriculture and Rural Affairs, Northeast Agricultural University, Harbin, China
- Horticulture and Landscape Architecture College, Northeast Agricultural University, Harbin, China
| | - Shusen Liu
- Shouguang Sanmu Seeding Co., Ltd., Shandong, China
| | | | - Lianqin Xia
- Shouguang Sanmu Seeding Co., Ltd., Shandong, China
| | - Jingchao Zhao
- Qinggang Ruixue Agriculture Co., Ltd., Heilongjiang, China
| | - Feishi Luan
- Key Laboratory of Biology and Genetic Improvement of Horticulture Crops (Northeast Region), Ministry of Agriculture and Rural Affairs, Northeast Agricultural University, Harbin, China
- Horticulture and Landscape Architecture College, Northeast Agricultural University, Harbin, China
| | - Shi Liu
- Key Laboratory of Biology and Genetic Improvement of Horticulture Crops (Northeast Region), Ministry of Agriculture and Rural Affairs, Northeast Agricultural University, Harbin, China
- Horticulture and Landscape Architecture College, Northeast Agricultural University, Harbin, China
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6
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Zhang H, Zhang X, Li M, Yang Y, Li Z, Xu Y, Wang H, Wang D, Zhang Y, Wang H, Fu Q, Zheng J, Yi H. Molecular mapping for fruit-related traits, and joint identification of candidate genes and selective sweeps for seed size in melon. Genomics 2022; 114:110306. [DOI: 10.1016/j.ygeno.2022.110306] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Revised: 12/22/2021] [Accepted: 02/01/2022] [Indexed: 11/17/2022]
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7
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Kaur G, Pathak M, Singla D, Chhabra G, Chhuneja P, Kaur Sarao N. Quantitative Trait Loci Mapping for Earliness, Fruit, and Seed Related Traits Using High Density Genotyping-by-Sequencing-Based Genetic Map in Bitter Gourd ( Momordica charantia L.). FRONTIERS IN PLANT SCIENCE 2021; 12:799932. [PMID: 35211132 PMCID: PMC8863046 DOI: 10.3389/fpls.2021.799932] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Accepted: 12/28/2021] [Indexed: 05/17/2023]
Abstract
Bitter gourd (Momordica charantia L.) is an important vegetable crop having numerous medicinal properties. Earliness and yield related traits are main aims of bitter gourd breeding program. High resolution quantitative trait loci (QTLs) mapping can help in understanding the molecular basis of phenotypic variation of these traits and thus facilitate marker-assisted breeding. The aim of present study was to identify genetic loci controlling earliness, fruit, and seed related traits. To achieve this, genotyping-by-sequencing (GBS) approach was used to genotype 101 individuals of F4 population derived from a cross between an elite cultivar Punjab-14 and PAUBG-6. This population was phenotyped under net-house conditions for three years 2018, 2019, and 2021. The linkage map consisting of 15 linkage groups comprising 3,144 single nucleotide polymorphism (SNP) markers was used to detect the QTLs for nine traits. A total of 50 QTLs for these traits were detected which were distributed on 11 chromosomes. The QTLs explained 5.09-29.82% of the phenotypic variance. The highest logarithm of the odds (LOD) score for a single QTL was 8.68 and the lowest was 2.50. For the earliness related traits, a total of 22 QTLs were detected. For the fruit related traits, a total of 16 QTLs and for seed related traits, a total of 12 QTLs were detected. Out of 50 QTLs, 20 QTLs were considered as frequent QTLs (FQ-QTLs). The information generated in this study is very useful in the future for fine-mapping and marker-assisted selection for these traits in bitter gourd improvement program.
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Affiliation(s)
- Gurpreet Kaur
- School of Agricultural Biotechnology, Punjab Agricultural University, Ludhiana, India
| | - Mamta Pathak
- Department of Vegetable Science, Punjab Agricultural University, Ludhiana, India
| | - Deepak Singla
- School of Agricultural Biotechnology, Punjab Agricultural University, Ludhiana, India
| | - Gautam Chhabra
- School of Agricultural Biotechnology, Punjab Agricultural University, Ludhiana, India
| | - Parveen Chhuneja
- School of Agricultural Biotechnology, Punjab Agricultural University, Ludhiana, India
| | - Navraj Kaur Sarao
- School of Agricultural Biotechnology, Punjab Agricultural University, Ludhiana, India
- *Correspondence: Navraj Kaur Sarao,
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Oren E, Tzuri G, Dafna A, Meir A, Kumar R, Katzir N, Elkind Y, Freilich S, Schaffer AA, Tadmor Y, Burger J, Gur A. High-density NGS-based map construction and genetic dissection of fruit shape and rind netting in Cucumis melo. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2020; 133:1927-1945. [PMID: 32100072 DOI: 10.1007/s00122-020-03567-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Accepted: 02/17/2020] [Indexed: 05/06/2023]
Abstract
Melon is an important crop that exhibits broad variation for fruit morphology traits that are the substrate for genetic mapping efforts. In the post-genomic era, the link between genetic maps and physical genome assemblies is key for leveraging QTL mapping results for gene cloning and breeding purposes. Here, using a population of 164 melon recombinant inbred lines (RILs) that were subjected to genotyping-by-sequencing, we constructed and compared high-density sequence- and linkage-based recombination maps that were aligned to the reference melon genome. These analyses reveal the genome-wide variation in recombination frequency and highlight regions of disrupted collinearity between our population and the reference genome. The population was phenotyped over 3 years for fruit size and shape as well as rind netting. Four QTLs were detected for fruit size, and they act in an additive manner, while significant epistatic interaction was found between two neutral loci for this trait. Fruit shape displayed transgressive segregation that was explained by the action of four QTLs, contributed by alleles from both parents. The complexity of rind netting was demonstrated on a collection of 177 diverse accessions. Further dissection of netting in our RILs population, which is derived from a cross of smooth and densely netted parents, confirmed the intricacy of this trait and the involvement of major locus and several other interacting QTLs. A major netting QTL on chromosome 2 co-localized with results from two additional populations, paving the way for future study toward identification of a causative gene for this trait.
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Affiliation(s)
- Elad Oren
- Plant Science Institute, Agricultural Research Organization, Newe Ya'ar Research Center, P.O. Box 1021, 3009500, Ramat Yishay, Israel
- The Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, Faculty of Agriculture, The Hebrew University of Jerusalem, Rehovot, Israel
| | - Galil Tzuri
- Plant Science Institute, Agricultural Research Organization, Newe Ya'ar Research Center, P.O. Box 1021, 3009500, Ramat Yishay, Israel
| | - Asaf Dafna
- Plant Science Institute, Agricultural Research Organization, Newe Ya'ar Research Center, P.O. Box 1021, 3009500, Ramat Yishay, Israel
| | - Ayala Meir
- Plant Science Institute, Agricultural Research Organization, Newe Ya'ar Research Center, P.O. Box 1021, 3009500, Ramat Yishay, Israel
| | - Ravindra Kumar
- Plant Science Institute, Agricultural Research Organization, Newe Ya'ar Research Center, P.O. Box 1021, 3009500, Ramat Yishay, Israel
| | - Nurit Katzir
- Plant Science Institute, Agricultural Research Organization, Newe Ya'ar Research Center, P.O. Box 1021, 3009500, Ramat Yishay, Israel
| | - Yonatan Elkind
- The Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, Faculty of Agriculture, The Hebrew University of Jerusalem, Rehovot, Israel
| | - Shiri Freilich
- Plant Science Institute, Agricultural Research Organization, Newe Ya'ar Research Center, P.O. Box 1021, 3009500, Ramat Yishay, Israel
| | - Arthur A Schaffer
- Plant Science Institute, Agricultural Research Organization, The Volcani Center, P.O. Box 15159, 7507101, Rishon LeZiyyon, Israel
| | - Yaakov Tadmor
- Plant Science Institute, Agricultural Research Organization, Newe Ya'ar Research Center, P.O. Box 1021, 3009500, Ramat Yishay, Israel
| | - Joseph Burger
- Plant Science Institute, Agricultural Research Organization, Newe Ya'ar Research Center, P.O. Box 1021, 3009500, Ramat Yishay, Israel
| | - Amit Gur
- Plant Science Institute, Agricultural Research Organization, Newe Ya'ar Research Center, P.O. Box 1021, 3009500, Ramat Yishay, Israel.
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Pan Y, Wang Y, McGregor C, Liu S, Luan F, Gao M, Weng Y. Genetic architecture of fruit size and shape variation in cucurbits: a comparative perspective. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2020; 133:1-21. [PMID: 31768603 DOI: 10.1007/s00122-019-03481-3] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2019] [Accepted: 11/11/2019] [Indexed: 05/28/2023]
Abstract
The Cucurbitaceae family hosts many economically important fruit vegetables (cucurbits) such as cucumber, melon, watermelon, pumpkin/squash, and various gourds. The cucurbits are probably best known for the diverse fruit sizes and shapes, but little is known about their genetic basis and molecular regulation. Here, we reviewed the literature on fruit size (FS), shape (FSI), and fruit weight (FW) QTL identified in cucumber, melon, and watermelon, from which 150 consensus QTL for these traits were inferred. Genome-wide survey of the three cucurbit genomes identified 253 homologs of eight classes of fruit or grain size/weight-related genes cloned in Arabidopsis, tomato, and rice that encode proteins containing the characteristic CNR (cell number regulator), CSR (cell size regulator), CYP78A (cytochrome P450), SUN, OVATE, TRM (TONNEAU1 Recruiting Motif), YABBY, and WOX domains. Alignment of the consensus QTL with candidate gene homologs revealed widespread structure and function conservation of fruit size/shape gene homologs in cucurbits, which was exemplified with the fruit size/shape candidate genes CsSUN25-26-27a and CsTRM5 in cucumber, CmOFP1a in melon, and ClSUN25-26-27a in watermelon. In cucurbits, the andromonoecy (for 1-aminocyclopropane-1-carboxylate synthase) and the carpel number (for CLAVATA3) loci are known to have pleiotropic effects on fruit shape, which may complicate identification of fruit size/shape candidate genes in these regions. The present work illustrates the power of comparative analysis in understanding the genetic architecture of fruit size/shape variation, which may facilitate QTL mapping and cloning for fruit size-related traits in cucurbits. The limitations and perspectives of this approach are also discussed.
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Affiliation(s)
- Yupeng Pan
- Department of Horticulture, University of Wisconsin-Madison, Madison, WI, 53706, USA
- College of Horticulture, Northwest A&F University, Yangling, 712100, Shaanxi Province, China
| | - Yuhui Wang
- Department of Horticulture, University of Wisconsin-Madison, Madison, WI, 53706, USA
| | - Cecilia McGregor
- Department of Horticulture and Institute of Plant Breeding, Genetics and Genomics, University of Georgia, Athens, GA, 30602, USA
| | - Shi Liu
- College of Horticulture and, Landscape Architecture at Northeast Agricultural University, Harbin, 150030, China
| | - Feishi Luan
- College of Horticulture and, Landscape Architecture at Northeast Agricultural University, Harbin, 150030, China
| | - Meiling Gao
- College of Life Science, Agriculture and Forestry, Qiqihar University, Qiqihar, 161006, China
| | - Yiqun Weng
- Department of Horticulture, University of Wisconsin-Madison, Madison, WI, 53706, USA.
- USDA-ARS Vegetable Crops Research Unit, 1575 Linden Dr., Madison, WI, 53706, USA.
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Inheritance of fruit yield and quality in melon (Cucumis melo L.) grown under field salinity stress. Sci Rep 2019; 9:7249. [PMID: 31076605 PMCID: PMC6510772 DOI: 10.1038/s41598-019-43616-6] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Accepted: 04/29/2019] [Indexed: 12/04/2022] Open
Abstract
Cultivation of salinity-tolerant crops can help mitigate salinization threats to soil and fresh water resources. This study was conducted to investigate the quantitative genetic basis of yield, yield components, and quality-related traits of salinity-stressed melon (Cucumis melo L.) using 55 melon hybrids and their 11 parents (half diallel). The results of combined ANOVA revealed highly significant effects of salinity and genotype on all the traits studied. Salinity stress influenced the inheritance of all the traits. The lower values of variance components (mainly additive), GCA/SCA ratio, as well as broad- and narrow-sense heritabilities were estimated for saline conditions (ECW = 14 dSm−1) when compared with those obtained under non-saline conditions. Fruit weight was governed by additive effects in non-saline conditions, but largely governed by the dominant nature in saline conditions. Based on the results obtained, especially as reflected by fruit yield, it is possible to develop melon hybrids with higher salinity tolerance than is currently observed in tolerant cultivars. On the other hand, most of the traits contributing to fruit quality are found to be governed by additive effects, allowing for their further improvement through recurrent selection to develop new cultivars of high yield and good quality for cultivation under saline conditions.
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Wang C, Qiao A, Fang X, Sun L, Gao P, Davis AR, Liu S, Luan F. Fine Mapping of Lycopene Content and Flesh Color Related Gene and Development of Molecular Marker-Assisted Selection for Flesh Color in Watermelon ( Citrullus lanatus). FRONTIERS IN PLANT SCIENCE 2019; 10:1240. [PMID: 31649702 PMCID: PMC6791925 DOI: 10.3389/fpls.2019.01240] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Accepted: 09/05/2019] [Indexed: 05/06/2023]
Abstract
Lycopene content and flesh color are important traits determined by a network of carotenoid metabolic pathways in watermelon. Based on our previous study of genetic inheritance and initial mapping using F2 populations of LSW-177 (red flesh) × cream of Saskatchewan (pale yellow flesh), red flesh color was controlled by one recessive gene regulating red and pale yellow pigmentation, and a candidate region related to lycopene content was detected spanning a 392,077-bp region on chromosome 4. To obtain a more precise result for further study, three genetic populations and a natural panel of 81 watermelon accessions with different flesh colors were used in this research. Herein, we narrowed the preliminary mapping region to 41,233 bp with the linkage map generated from F2 populations of LSW-177 (red flesh) × cream of Saskatchewan (pale yellow flesh) with 1,202 individuals. Two candidate genes, Cla005011 and Cla005012, were found in the fine mapping region; therein Cla005011 was a key locus annotated as a lycopene β-cyclase gene. Phylogenetic tree analysis showed that Cla005011 was the closest relative gene in gourd. LSW-177 × PI 186490 (white flesh) and another BC1 population derived from garden female (red flesh) × PI 186490 were generated to verify the accuracy of the red flesh candidate gene region. By analyzing the expression levels of candidate genes in different developmental stages of different color watermelon varieties, Cla005011 for the expression differences was not the main reason for the flesh color variation between COS and LSW-177. This indicated that the LCYB gene might regulate fruit color changes at the protein level. A new marker-assisted selection system to identify red and yellow flesh colors in watermelon was developed with flesh color-specific CAPS markers and tested in 81 watermelon accessions.
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Affiliation(s)
- Chaonan Wang
- Key Laboratory of Biology and Genetic Improvement of Horticulture Crops (Northeast Region), Ministry of Agriculture, Northeast Agricultural University, Harbin, China
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, China
| | - Aohan Qiao
- Key Laboratory of Biology and Genetic Improvement of Horticulture Crops (Northeast Region), Ministry of Agriculture, Northeast Agricultural University, Harbin, China
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, China
| | - Xufeng Fang
- Key Laboratory of Biology and Genetic Improvement of Horticulture Crops (Northeast Region), Ministry of Agriculture, Northeast Agricultural University, Harbin, China
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, China
| | - Lei Sun
- Key Laboratory of Biology and Genetic Improvement of Horticulture Crops (Northeast Region), Ministry of Agriculture, Northeast Agricultural University, Harbin, China
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, China
| | - Peng Gao
- Key Laboratory of Biology and Genetic Improvement of Horticulture Crops (Northeast Region), Ministry of Agriculture, Northeast Agricultural University, Harbin, China
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, China
| | - Angela R. Davis
- Woodland Research Station, Sakata Seed America, Inc.Woodland, CA, United States
| | - Shi Liu
- Key Laboratory of Biology and Genetic Improvement of Horticulture Crops (Northeast Region), Ministry of Agriculture, Northeast Agricultural University, Harbin, China
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, China
- *Correspondence: Shi Liu, ; Feishi Luan,
| | - Feishi Luan
- Key Laboratory of Biology and Genetic Improvement of Horticulture Crops (Northeast Region), Ministry of Agriculture, Northeast Agricultural University, Harbin, China
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, China
- *Correspondence: Shi Liu, ; Feishi Luan,
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Yang X, Liu Y, Wu F, Jiang X, Lin Y, Wang Z, Zhang Z, Ma J, Chen G, Wei Y, Zheng Y. Quantitative trait loci analysis of root traits under phosphorus deficiency at the seedling stage in wheat. Genome 2018; 61:209-215. [PMID: 29373804 DOI: 10.1139/gen-2017-0159] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Deficiency of available phosphorus (P) in soil limits wheat production and creates a need to develop P-deficiency-tolerant cultivars. Plant roots, important organs for absorbing nutrients and synthesizing growth regulators, are good candidates for P-efficiency screening. In this study, we evaluated five root traits under hydroponic culture conditions either with (AP) or without (NP) applied P in a recombinant inbred line population (H461/CM107) of Triticum aestivum L. at the seedling stage. Four significant quantitative trait loci (QTL) were detected, on chromosomes 1D, 2D, 3D, and 7D in NP-treated plants, explaining up to 13.0%, 11.0%, 14.4%, and 12.8% of the phenotypic variance, respectively. Among these QTL, Qrt.sicau-3D and Qrt.sicau-7D showed pleiotropic and additive effects. All QTL were found to be novel. The diversity array technology markers flanking the QTL were converted to simple sequence repeat markers that can be deployed in future genetic studies of P deficiency. These QTL lead to an increase in root biomass and respond to P-deficiency stress; these characteristics are crucial to improve root traits for breeding or further investigation of the gene(s) involved in P-deficiency tolerance.
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Affiliation(s)
- Xilan Yang
- a Triticeae Research Institute, Sichuan Agricultural University, Wenjiang, Chengdu 611130, China
| | - Yaxi Liu
- a Triticeae Research Institute, Sichuan Agricultural University, Wenjiang, Chengdu 611130, China
| | - Fangkun Wu
- a Triticeae Research Institute, Sichuan Agricultural University, Wenjiang, Chengdu 611130, China
| | - Xiaojun Jiang
- a Triticeae Research Institute, Sichuan Agricultural University, Wenjiang, Chengdu 611130, China
| | - Yu Lin
- a Triticeae Research Institute, Sichuan Agricultural University, Wenjiang, Chengdu 611130, China
| | - Zhiqiang Wang
- a Triticeae Research Institute, Sichuan Agricultural University, Wenjiang, Chengdu 611130, China
| | - Zhengli Zhang
- a Triticeae Research Institute, Sichuan Agricultural University, Wenjiang, Chengdu 611130, China
| | - Jian Ma
- a Triticeae Research Institute, Sichuan Agricultural University, Wenjiang, Chengdu 611130, China
| | - Guangdeng Chen
- b College of Resources, Sichuan Agricultural University, Wenjiang, Chengdu 611130, China
| | - Yuming Wei
- a Triticeae Research Institute, Sichuan Agricultural University, Wenjiang, Chengdu 611130, China
| | - Youliang Zheng
- a Triticeae Research Institute, Sichuan Agricultural University, Wenjiang, Chengdu 611130, China
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Díaz A, Martín-Hernández AM, Dolcet-Sanjuan R, Garcés-Claver A, Álvarez JM, Garcia-Mas J, Picó B, Monforte AJ. Quantitative trait loci analysis of melon (Cucumis melo L.) domestication-related traits. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2017; 130:1837-1856. [PMID: 28584902 DOI: 10.1007/s00122-017-2928-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2017] [Accepted: 05/26/2017] [Indexed: 05/06/2023]
Abstract
Loci on LGIV, VI, and VIII of melon genome are involved in the control of fruit domestication-related traits and they are candidate to have played a role in the domestication of the crop. The fruit of wild melons is very small (20-50 g) without edible pulp, contrasting with the large size and high pulp content of cultivated melon fruits. An analysis of quantitative trait loci (QTL) controlling fruit morphology domestication-related traits was carried out using an in vitro maintained F2 population from the cross between the Indian wild melon "Trigonus" and the western elite cultivar 'Piel de Sapo'. Twenty-seven QTL were identified in at least two out of the three field trials. Six of them were also being detected in BC1 and BC3 populations derived from the same cross. Ten of them were related to fruit morphological traits, 12 to fruit size characters, and 5 to pulp content. The Trigonus alleles decreased the value of the characters, except for the QTL at andromonoecious gene at linkage group (LG) II, and the QTL for pulp content at LGV. QTL genotypes accounted for a considerable degree of the total phenotypic variation, reaching up to 46%. Around 66% of the QTL showed additive gene action, 19% exhibited dominance, and 25% consisted of overdominance. The regions on LGIV, VI, and VIII included the QTL with more consistent and strong effects on domestication-related traits. QTLs on those regions were validated in BC2S1, BC2S2, and BC3 families, with "Trigonus" allele decreasing the fruit morphological traits in all cases. The validated QTL could represent loci involved in melon domestication, although further experiments as genomic variation studies across wild and cultivated genotypes would be necessary to confirm this hypothesis.
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Affiliation(s)
- Aurora Díaz
- Unidad de Hortofruticultura, Instituto Agroalimentario de Aragón (IA2) (CITA-Universidad de Zaragoza), Avenida de Montañana 930., 50059, Saragossa, Spain
- Instituto de Biología Molecular y Celular de Plantas (IBMCP), Universitat Politècnica de València (UPV)-Consejo Superior de Investigaciones Científicas (CSIC), Ciudad Politécnica de la Innovación (CPI), Ed. 8E, C/Ingeniero Fausto Elio s/n., 46022, Valencia, Spain
| | - Ana Montserrat Martín-Hernández
- IRTA, Centre for Research in Agricultural Genomics CSIC-IRTA-UAB-UB, Parc de Recerca de la UAB, C/Vall de Moronta, Edifici CRAG, Bellaterra (Cerdanyola del Vallés), 08193, Barcelona, Spain
| | - Ramón Dolcet-Sanjuan
- IRTA Fruitcentre, PCiTAL Parc de Gardeny-Edifici Fruitcentre, 25003, Lleida, Spain
| | - Ana Garcés-Claver
- Unidad de Hortofruticultura, Instituto Agroalimentario de Aragón (IA2) (CITA-Universidad de Zaragoza), Avenida de Montañana 930., 50059, Saragossa, Spain
| | - José María Álvarez
- Unidad de Hortofruticultura, Instituto Agroalimentario de Aragón (IA2) (CITA-Universidad de Zaragoza), Avenida de Montañana 930., 50059, Saragossa, Spain
| | - Jordi Garcia-Mas
- IRTA, Centre for Research in Agricultural Genomics CSIC-IRTA-UAB-UB, Parc de Recerca de la UAB, C/Vall de Moronta, Edifici CRAG, Bellaterra (Cerdanyola del Vallés), 08193, Barcelona, 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
| | - Antonio José Monforte
- Instituto de Biología Molecular y Celular de Plantas (IBMCP), Universitat Politècnica de València (UPV)-Consejo Superior de Investigaciones Científicas (CSIC), Ciudad Politécnica de la Innovación (CPI), Ed. 8E, C/Ingeniero Fausto Elio s/n., 46022, Valencia, Spain.
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Wang YH, Wu DH, Huang JH, Tsao SJ, Hwu KK, Lo HF. Mapping quantitative trait loci for fruit traits and powdery mildew resistance in melon (Cucumis melo). BOTANICAL STUDIES 2016; 57:19. [PMID: 28597428 PMCID: PMC5430578 DOI: 10.1186/s40529-016-0130-1] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2016] [Accepted: 06/23/2016] [Indexed: 05/06/2023]
Abstract
BACKGROUND Fruit characters affect consumer preferences and the market value of melons is determined by fruit quality. Most fruit quality-related traits are controlled by multiple genes, and are influenced by environmental factors. Furthermore, powdery mildew is another limiting factor in melon production. To develop new melon cultivars with disease resistance and high quality fruits using the molecular marker-assisted breeding strategy, identification of quantitative trait loci for fruit quality and disease resistance is required. RESULTS The F2 populations from the cross of TARI-08874 (Cucumis melo ssp. melo) and 'Bai-li-gua' (C. melo ssp. agrestis) were used to map the quantitative trait loci (QTLs) for fruit-related traits and powdery mildew resistance in two trials. All traits were significantly different (P < 0.05) between parents. The generated linkage map consisted of twelve major linkage groups (LGs), spanning 626.1 cM in total, with an average distance of 8.3 cM between flanking markers. Nineteen QTLs were detected for seven melon traits, among which ten QTLs were localized to the same positions as the corresponding QTLs described in other studies. Four of these QTLs were detected in both trials. The results of identified QTLs in this study suggested that fruit size in the tested populations were mainly determined by fruit diameter and flesh thickness. All of the major QTLs for fruit diameter and flesh thickness were identified on LG5 and LG11. Four QTLs identified responsible for netting width of fruit rind were co-localized with the QTLs for netting density, suggesting similar genetic mechanisms affecting these two traits. Additionally, only one major QTL for powdery mildew resistance was detected on LG2, and it was closely linked to a simple sequence repeat (SSR) marker CMBR120 which was identified in a previous study. CONCLUSION Because the netting feature is a crucial factor for external appearance of fruits in Asia market, we focus on mining the genetic information of fruit netting. This is the first report of QTL mapping to netting width. Furthermore, new QTLs were identified for netting density (qND4, qND6, and qND7) and netting width (qNW2, qNW4, qNW6, and qNW7) successfully. In addition, novel QTLs for fruit diameter (qFD5), flesh thickness (qFT11) were also detected.
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Affiliation(s)
- Yu-Hua Wang
- Crop Science Division, Taiwan Agricultural Research Institute, Council of Agriculture (COA), Taichung, Taiwan
- Department of Horticulture and Landscape Architecture, National Taiwan University, Taipei, Taiwan
| | - Dong-Hong Wu
- Crop Science Division, Taiwan Agricultural Research Institute, Council of Agriculture (COA), Taichung, Taiwan
| | - Jin-Hsing Huang
- Plant Pathology Division, Taiwan Agricultural Research Institute, Council of Agriculture (COA), Taichung, Taiwan
| | - Shing-Jy Tsao
- Department of Horticulture and Landscape Architecture, National Taiwan University, Taipei, Taiwan
| | - Kae-Kang Hwu
- Department of Agronomy, National Taiwan University, Taipei, Taiwan
| | - Hsiao-Feng Lo
- Department of Horticulture and Landscape Architecture, National Taiwan University, Taipei, Taiwan
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Liu S, Gao P, Zhu Q, Luan F, Davis AR, Wang X. Development of cleaved amplified polymorphic sequence markers and a CAPS-based genetic linkage map in watermelon (Citrullus lanatus [Thunb.] Matsum. and Nakai) constructed using whole-genome re-sequencing data. BREEDING SCIENCE 2016; 66:244-59. [PMID: 27162496 PMCID: PMC4785002 DOI: 10.1270/jsbbs.66.244] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2015] [Accepted: 11/26/2015] [Indexed: 05/06/2023]
Abstract
Cleaved amplified polymorphic sequence (CAPS) markers are useful tools for detecting single nucleotide polymorphisms (SNPs). This study detected and converted SNP sites into CAPS markers based on high-throughput re-sequencing data in watermelon, for linkage map construction and quantitative trait locus (QTL) analysis. Two inbred lines, Cream of Saskatchewan (COS) and LSW-177 had been re-sequenced and analyzed by Perl self-compiled script for CAPS marker development. 88.7% and 78.5% of the assembled sequences of the two parental materials could map to the reference watermelon genome, respectively. Comparative assembled genome data analysis provided 225,693 and 19,268 SNPs and indels between the two materials. 532 pairs of CAPS markers were designed with 16 restriction enzymes, among which 271 pairs of primers gave distinct bands of the expected length and polymorphic bands, via PCR and enzyme digestion, with a polymorphic rate of 50.94%. Using the new CAPS markers, an initial CAPS-based genetic linkage map was constructed with the F2 population, spanning 1836.51 cM with 11 linkage groups and 301 markers. 12 QTLs were detected related to fruit flesh color, length, width, shape index, and brix content. These newly CAPS markers will be a valuable resource for breeding programs and genetic studies of watermelon.
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Affiliation(s)
- Shi Liu
- Horticulture College, Northeast Agricultural University,
No. 59 Mucai Street Harbin, Heilongjiang Province, 150030,
China
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Northeast Region), Ministry of Agriculture,
No. 59 Mucai Street Harbin, Heilongjiang Province, 150030,
China
| | - Peng Gao
- Horticulture College, Northeast Agricultural University,
No. 59 Mucai Street Harbin, Heilongjiang Province, 150030,
China
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Northeast Region), Ministry of Agriculture,
No. 59 Mucai Street Harbin, Heilongjiang Province, 150030,
China
| | - Qianglong Zhu
- Horticulture College, Northeast Agricultural University,
No. 59 Mucai Street Harbin, Heilongjiang Province, 150030,
China
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Northeast Region), Ministry of Agriculture,
No. 59 Mucai Street Harbin, Heilongjiang Province, 150030,
China
| | - Feishi Luan
- Horticulture College, Northeast Agricultural University,
No. 59 Mucai Street Harbin, Heilongjiang Province, 150030,
China
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Northeast Region), Ministry of Agriculture,
No. 59 Mucai Street Harbin, Heilongjiang Province, 150030,
China
- Corresponding author (e-mail: )
| | - Angela R. Davis
- South Central Agricultural Research Laboratory, Agricultural Research Service, U.S. Department of Agriculture. Currently with HM. Clause,
9241 Mace Blvd, Davis, CA 95618,
USA
| | - Xiaolu Wang
- Horticulture College, Northeast Agricultural University,
No. 59 Mucai Street Harbin, Heilongjiang Province, 150030,
China
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Northeast Region), Ministry of Agriculture,
No. 59 Mucai Street Harbin, Heilongjiang Province, 150030,
China
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Monforte AJ, Diaz A, Caño-Delgado A, van der Knaap E. The genetic basis of fruit morphology in horticultural crops: lessons from tomato and melon. JOURNAL OF EXPERIMENTAL BOTANY 2014; 65:4625-37. [PMID: 24520021 DOI: 10.1093/jxb/eru017] [Citation(s) in RCA: 115] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Fruits represent an important part of the human diet and show extensive variation in size and shape between and within cultivated species. The genetic basis of such variation has been studied most extensively in tomato, where currently six quantitative trait loci (QTLs) involving these traits have been fine-mapped and the genes underlying the QTLs identified. The genes responsible for the cloned QTLs belong to families with a few to many members. FASCIATED is encoded by a member of the YABBY family, CNR/FW2.2 by a member of the Cell Number Regulator family, SlKLUH/FW3.2 by a cytochrome P450 of the 78A class (CYP78A), LOCULE NUMBER by a member of the WOX family including WUSCHEL, OVATE by a member of the Ovate Family Proteins (OFP), and SUN by a member of the IQ domain family. A high portion of the history and current diversity in fruit morphology among tomato cultivars can be explained by modifications at four of these cloned QTLs. In melon, a number of QTLs involved in fruit morphology have been mapped, but the molecular basis for these QTLs is unknown. In the present review, we examine the current knowledge on the molecular basis of fruit morphology in tomato and transfer that information in order to define candidate genes of melon fruit shape and size QTLs. We hypothesize that different members of the gene families identified in tomato may have a role in the regulation of fruit morphology in other species. We anchored the published melon QTL map on the genome sequence and identified the melon family members of the six cloned tomato QTLs in the genome. We investigated the co-localization of melon fruit morphology QTLs and the candidate genes. We found that QTLs for fruit weight co-localized frequently with members of the CNR/FW2.2 and KLUH/FW3.2 families, as well as co-localizations between OFP family members and fruit-shape QTLs, making this family the most suitable to explain fruit shape variation among melon accessions.
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Affiliation(s)
- Antonio J Monforte
- 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 (CPI), Ingeniero Fausto Elio s/n, 46022 Valencia, Spain
| | - Aurora Diaz
- 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 (CPI), Ingeniero Fausto Elio s/n, 46022 Valencia, Spain
| | - Ana Caño-Delgado
- Centre for Research in Agricultural Genomics (CRAG) CSIC-IRTA-UAB-UB, Campus UAB, 08193 Bellaterra (Barcelona), Spain
| | - Esther van der Knaap
- Department of Horticulture and Crop Science, The Ohio State University/OARDC, 1680 Madison Avenue, Wooster, OH-44691, USA
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Gao P, Ma H, Luan F, Song H. DNA fingerprinting of Chinese melon provides evidentiary support of seed quality appraisal. PLoS One 2012; 7:e52431. [PMID: 23285039 PMCID: PMC3527501 DOI: 10.1371/journal.pone.0052431] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2012] [Accepted: 11/14/2012] [Indexed: 11/19/2022] Open
Abstract
Melon, Cucumis melo L. is an important vegetable crop worldwide. At present, there are phenomena of homonyms and synonyms present in the melon seed markets of China, which could cause variety authenticity issues influencing the process of melon breeding, production, marketing and other aspects. Molecular markers, especially microsatellites or simple sequence repeats (SSRs) are playing increasingly important roles for cultivar identification. The aim of this study was to construct a DNA fingerprinting database of major melon cultivars, which could provide a possibility for the establishment of a technical standard system for purity and authenticity identification of melon seeds. In this study, to develop the core set SSR markers, 470 polymorphic SSRs were selected as the candidate markers from 1219 SSRs using 20 representative melon varieties (lines). Eighteen SSR markers, evenly distributed across the genome and with the highest contents of polymorphism information (PIC) were identified as the core marker set for melon DNA fingerprinting analysis. Fingerprint codes for 471 melon varieties (lines) were established. There were 51 materials which were classified into17 groups based on sharing the same fingerprint code, while field traits survey results showed that these plants in the same group were synonyms because of the same or similar field characters. Furthermore, DNA fingerprinting quick response (QR) codes of 471 melon varieties (lines) were constructed. Due to its fast readability and large storage capacity, QR coding melon DNA fingerprinting is in favor of read convenience and commercial applications.
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Affiliation(s)
- Peng Gao
- College of Horticulture, Northeast Agricultural University, Harbin, Heilongjiang Province, People’s Republic of China
| | - Hongyan Ma
- College of Horticulture, Northeast Agricultural University, Harbin, Heilongjiang Province, People’s Republic of China
| | - Feishi Luan
- College of Horticulture, Northeast Agricultural University, Harbin, Heilongjiang Province, People’s Republic of China
- * E-mail:
| | - Haibin Song
- College of Horticulture, Northeast Agricultural University, Harbin, Heilongjiang Province, People’s Republic of China
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18
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Sandlin K, Prothro J, Heesacker A, Khalilian N, Okashah R, Xiang W, Bachlava E, Caldwell DG, Taylor CA, Seymour DK, White V, Chan E, Tolla G, White C, Safran D, Graham E, Knapp S, McGregor C. Comparative mapping in watermelon [Citrullus lanatus (Thunb.) Matsum. et Nakai]. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2012; 125:1603-1618. [PMID: 22875176 DOI: 10.1007/s00122-012-1938-z] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2012] [Accepted: 07/03/2012] [Indexed: 05/28/2023]
Abstract
The first single-nucleotide polymorphism (SNP) maps for watermelon [Citrullus lanatus (Thunb.) Matsum. et Nakai] were constructed and compared. Three populations were developed from crosses between two elite cultivars, Klondike Black Seeded × New Hampshire Midget (KBS × NHM), an elite cultivar and wild egusi accession, Strain II × PI 560023 (SII × Egusi) and an elite cultivar and a wild citron accession, ZWRM50 × PI 244019 (ZWRM × Citroides). The SII × Egusi and ZWRM × Citroides F(2) populations consisted of 187 and 182 individuals respectively while the KBS × NHM recombinant inbred line (RIL) population consisted of 164 lines. The length of the genetic maps were 1,438, 1,514 and 1,144 cM with average marker distances of 3.8, 4.2, and 3.4 cM for the KBS × NHM, SII × Egusi and ZWRM × Citroides populations, respectively. Shared markers were used to align the three maps so that the linkage groups (LGs) represented the 11 chromosomes of the species. Marker segregation distortion were observed in all three populations, but was highest (12.7 %) in the ZWRM × Citroides population, where Citroides alleles were favored. The three maps were used to construct a consensus map containing 378 SNP markers with an average distance of 5.1 cM between markers. Phenotypic data was collected for fruit weight (FWT), fruit length (FL), fruit width (FWD), fruit shape index (FSI), rind thickness (RTH) and Brix (BRX) and analyzed for quantitative trait loci (QTL) associated with these traits. A total of 40 QTL were identified in the three populations, including major QTL for fruit size and shape that were stable across genetic backgrounds and environments. The present study reports the first SNP maps for Citrullus and the first map constructed using two elite parents. We also report the first stable QTL associated with fruit size and shape in Citrullus lanatus. These maps, QTL and SNPs should be useful for the watermelon community and represent a significant step towards the potential use of molecular tools in watermelon breeding.
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Affiliation(s)
- Katherine Sandlin
- Institute of Plant Breeding, Genetics and Genomics, University of Georgia, Athens, GA 30602, USA
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Kole C, Olukolu BA, Kole P, Rao VK, Bajpai A, Backiyarani S, Singh J, Elanchezhian R, Abbott AG. The First Genetic Map and Positions of Major Fruit Trait Loci of Bitter Melon (Momordica charantia). ACTA ACUST UNITED AC 2012. [DOI: 10.7243/2050-2389-1-1] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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20
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Wang XL, Gao XW, Li G, Wang HL, Geng SD, Kang F, Nie XX. [Construction of a melon genetic map with fruit and seed QTLs]. YI CHUAN = HEREDITAS 2011; 33:1398-1408. [PMID: 22207387 DOI: 10.3724/sp.j.1005.2011.01398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
A genetic map of melon was constructed using 143 F2 population developed from a cross between two distant lines Ano2 of Japan and Hami melon K413. The map contains 12 linkage groups and 142 markers, including 121 AFLPs, 16 SSRs, 3 STSs, 2 trait markers and covers 1 014.2 cM. Composite interval mapping (CIM) method was used to detect QTLs involved in melon fruit and seed traits: fruit length (FL), fruit width (FW), fruit shape (length/width, FS), centre sugar (CS), edge sugar (ES), flesh texture (FT), seed length (SL), seed width (SW), seed shape (SS), and seed weight (SW). The result showed that Flesh was located between AFLP markers NDAA and NCFA on C9. A total of 25 QTLs were detected for other traits and some QTLs were co-located with each other. The QTLs Sl5.1, Sw5.1, and Swt5.1 located on linkage C5 between NCA and N73C explained a significant portion of associated phenotypic variation (R2=17%, 19%, 23%). The allele from Ano2 obviously suppressed the length, width, and weight of melon seed; the QTLs between N73A and NFDA on C8 were involved in seed width, shape, and weight; the QTL Fs8.1 on C8 was detected using both F2 and F3 fruit data and explained a significant portion of phenotypic variation 25% and 19%. Fs8.1 showed partly dominant, and the allele from Ano2 sup-pressed elongation of fruit to form round melon. The QTLs related to centre sugar, edge sugar, and fruit texture were also detected in this research.
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Affiliation(s)
- Xian-Lei Wang
- Life Science and Technology Department, Xinjiang University, Urumchi, China.
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Li D, Cuevas HE, Yang L, Li Y, Garcia-Mas J, Zalapa J, Staub JE, Luan F, Reddy U, He X, Gong Z, Weng Y. Syntenic relationships between cucumber (Cucumis sativus L.) and melon (C. melo L.) chromosomes as revealed by comparative genetic mapping. BMC Genomics 2011; 12:396. [PMID: 21816110 PMCID: PMC3199783 DOI: 10.1186/1471-2164-12-396] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2011] [Accepted: 08/05/2011] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND Cucumber, Cucumis sativus L. (2n = 2 × = 14) and melon, C. melo L. (2n = 2 × = 24) are two important vegetable species in the genus Cucumis (family Cucurbitaceae). Both species have an Asian origin that diverged approximately nine million years ago. Cucumber is believed to have evolved from melon through chromosome fusion, but the details of this process are largely unknown. In this study, comparative genetic mapping between cucumber and melon was conducted to examine syntenic relationships of their chromosomes. RESULTS Using two melon mapping populations, 154 and 127 cucumber SSR markers were added onto previously reported F(2)- and RIL-based genetic maps, respectively. A consensus melon linkage map was developed through map integration, which contained 401 co-dominant markers in 12 linkage groups including 199 markers derived from the cucumber genome. Syntenic relationships between melon and cucumber chromosomes were inferred based on associations between markers on the consensus melon map and cucumber draft genome scaffolds. It was determined that cucumber Chromosome 7 was syntenic to melon Chromosome I. Cucumber Chromosomes 2 and 6 each contained genomic regions that were syntenic with melon chromosomes III+V+XI and III+VIII+XI, respectively. Likewise, cucumber Chromosomes 1, 3, 4, and 5 each was syntenic with genomic regions of two melon chromosomes previously designated as II+XII, IV+VI, VII+VIII, and IX+X, respectively. However, the marker orders in several syntenic blocks on these consensus linkage maps were not co-linear suggesting that more complicated structural changes beyond simple chromosome fusion events have occurred during the evolution of cucumber. CONCLUSIONS Comparative mapping conducted herein supported the hypothesis that cucumber chromosomes may be the result of chromosome fusion from a 24-chromosome progenitor species. Except for a possible inversion, cucumber Chromosome 7 has largely remained intact in the past nine million years since its divergence from melon. Meanwhile, many structural changes may have occurred during the evolution of the remaining six cucumber chromosomes. Further characterization of the genomic nature of Cucumis species closely related to cucumber and melon might provide a better understanding of the evolutionary history leading to modern cucumber.
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Affiliation(s)
- Dawei Li
- Horticulture College, Northwest A & F University, Yangling 712100, China
- Horticulture Department, University of Wisconsin, Madison, WI 53706, USA
| | - Hugo E Cuevas
- Horticulture Department, University of Wisconsin, Madison, WI 53706, USA
- USDA ARS Tropical Agriculture Research Station, Mayaguez, P.R. 00680, Puerto Rico
| | - Luming Yang
- Horticulture Department, University of Wisconsin, Madison, WI 53706, USA
| | - Yuhong Li
- Horticulture College, Northwest A & F University, Yangling 712100, China
- Horticulture Department, University of Wisconsin, Madison, WI 53706, USA
| | - Jordi Garcia-Mas
- IRTA, Center for Research in Agricultural Genomics CSIC-IRTA-UAB, Campus UAB, Edifici CRAG, 08193 Bellaterra (Barcelona), Spain
| | - Juan Zalapa
- Horticulture Department, University of Wisconsin, Madison, WI 53706, USA
- USDA ARS Vegetable Crops Research Unit, Horticulture Department, University of Wisconsin, Madison, WI 53706, USA
| | - Jack E Staub
- USDA-ARS, Forage & Range Research Laboratory, Utah State University, Logan, UT 84322 USA
| | - Feishi Luan
- Horticulture College, Northeast Agricultural University, Harbin, 150030, China
| | - Umesh Reddy
- Department of Biology, West Virginia State University Institute, WV 25112, USA
| | - Xiaoming He
- Horticulture Department, University of Wisconsin, Madison, WI 53706, USA
- Vegetable Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China
| | - Zhenhui Gong
- Horticulture College, Northwest A & F University, Yangling 712100, China
| | - Yiqun Weng
- Horticulture Department, University of Wisconsin, Madison, WI 53706, USA
- USDA ARS Vegetable Crops Research Unit, Horticulture Department, University of Wisconsin, Madison, WI 53706, USA
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Fernandez-Silva I, Moreno E, Essafi A, Fergany M, Garcia-Mas J, Martín-Hernandez AM, Alvarez JM, Monforte AJ. Shaping melons: agronomic and genetic characterization of QTLs that modify melon fruit morphology. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2010; 121:931-40. [PMID: 20506012 DOI: 10.1007/s00122-010-1361-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2010] [Accepted: 05/12/2010] [Indexed: 05/03/2023]
Abstract
The consistency of quantitative trait locus (QTL) effects among genetic backgrounds is a key factor for introgressing QTLs from initial mapping experiments into applied breeding programs. We have selected four QTLs (fs6.4, fw4.3, fw4.4 and fw8.1) involved in melon fruit morphology that had previously been detected in a collection of introgression lines derived from the cross between a Spanish cultivar, "Piel de Sapo," and the Korean accession PI161375 (Songwan Charmi). Introgression lines harboring these QTLs were crossed with an array of melon inbred lines representative of the most important cultivar types. Hybrids of the introgression and inbred lines, with the appropriate controls, were evaluated in replicated agronomic trials. The effects of the QTLs were consistent among the different genetic backgrounds, demonstrating the utility of these QTLs for applied breeding programs in modifying melon fruit morphology. Three QTLs, fw4.4, fs6.4 and fs12.1 were subjected to further study in order to map them more accurately by substitution mapping using a new set of introgression lines with recombination events within the QTL chromosome region. The position of the QTLs was narrowed down to 36-5 cM, depending on the QTL. The results presented in the current study set the basis for the use of these QTLs in applied breeding programs and for the molecular characterization of the genes underlying them.
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Affiliation(s)
- Iria Fernandez-Silva
- IRTA, Centre de Recerca en Agrigenòmica CSIC-IRTA-UAB, Carretera de Cabrils Km 2, 08348, Cabrils, Barcelona, Spain
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Harel-Beja R, Tzuri G, Portnoy V, Lotan-Pompan M, Lev S, Cohen S, Dai N, Yeselson L, Meir A, Libhaber SE, Avisar E, Melame T, van Koert P, Verbakel H, Hofstede R, Volpin H, Oliver M, Fougedoire A, Stalh C, Fauve J, Copes B, Fei Z, Giovannoni J, Ori N, Lewinsohn E, Sherman A, Burger J, Tadmor Y, Schaffer AA, Katzir N. A genetic map of melon highly enriched with fruit quality QTLs and EST markers, including sugar and carotenoid metabolism genes. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2010; 121:511-33. [PMID: 20401460 DOI: 10.1007/s00122-010-1327-4] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2009] [Accepted: 03/22/2010] [Indexed: 05/03/2023]
Abstract
A genetic map of melon enriched for fruit traits was constructed, using a recombinant inbred (RI) population developed from a cross between representatives of the two subspecies of Cucumis melo L.: PI 414723 (subspecies agrestis) and 'Dulce' (subspecies melo). Phenotyping of 99 RI lines was conducted over three seasons in two locations in Israel and the US. The map includes 668 DNA markers (386 SSRs, 76 SNPs, six INDELs and 200 AFLPs), of which 160 were newly developed from fruit ESTs. These ESTs include candidate genes encoding for enzymes of sugar and carotenoid metabolic pathways that were cloned from melon cDNA or identified through mining of the International Cucurbit Genomics Initiative database (http://www.icugi.org/). The map covers 1,222 cM with an average of 2.672 cM between markers. In addition, a skeleton physical map was initiated and 29 melon BACs harboring fruit ESTs were localized to the 12 linkage groups of the map. Altogether, 44 fruit QTLs were identified: 25 confirming QTLs described using other populations and 19 newly described QTLs. The map includes QTLs for fruit sugar content, particularly sucrose, the major sugar affecting sweetness in melon fruit. Six QTLs interacting in an additive manner account for nearly all the difference in sugar content between the two genotypes. Three QTLs for fruit flesh color and carotenoid content were identified. Interestingly, no clear colocalization of QTLs for either sugar or carotenoid content was observed with over 40 genes encoding for enzymes involved in their metabolism. The RI population described here provides a useful resource for further genomics and metabolomics studies in melon, as well as useful markers for breeding for fruit quality.
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Affiliation(s)
- R Harel-Beja
- Department of Vegetable Research, Agricultural Research Organization, Newe Ya'ar Research Center, P.O. Box 1021, Ramat Yishay, 30095, Israel
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Cuevas HE, Staub JE, Simon PW, Zalapa JE. A consensus linkage map identifies genomic regions controlling fruit maturity and beta-carotene-associated flesh color in melon (Cucumis melo L.). TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2009; 119:741-56. [PMID: 19551368 DOI: 10.1007/s00122-009-1085-3] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2008] [Accepted: 05/27/2009] [Indexed: 05/06/2023]
Abstract
The nutritional value and yield potential of US Western Shipping melon (USWS; Cucumis melo L.) could be improved through the introgression of genes for early fruit maturity (FM) and the enhancement of the quantity of beta-carotene (QbetaC) in fruit mesocarp (i.e., flesh color). Therefore, a set of 116 F(3) families derived from the monoecious, early FM Chinese line 'Q 3-2-2' (no beta-carotene, white mesocarp) and the andromonoecious, late FM USWS line 'Top Mark' (possessing beta-carotene, orange mesocarp) were examined during 2 years in Wisconsin, USA to identify quantitative trait loci (QTL) associated with FM and QbetaC. A 171-point F(2-3) based map was constructed and used for QTL analysis. Three QTL associated with QbetaC were detected, which explained a significant portion of the observed phenotypic variation (flesh color; R (2) = 4.0-50.0%). The map position of one QTL (beta-carM.E.9.1) was uniformly aligned with one carotenoid-related gene (Orange gene), suggesting its likely role in QbetaC in this melon population and putative relationship with the melon white flesh (wf) gene. Two major (FM.6.1 and FM.11.1; R (2) >or= 20%) and one minor QTL (FM.2.1; R (2) = 8%) were found to be associated with FM. This map was then merged with a previous recombinant inbred line (RIL)-based map used to identify seven QTL associated with QbetaC in melon fruit. This consensus map [300 molecular markers (187 co-dominant melon and 14 interspecific; 10 LG)] provides a framework for the further dissection and cloning of published QTL, which will consequently lead to more effective trait introgression in melon.
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Affiliation(s)
- H E Cuevas
- Department of Plant Breeding and Plant Genetics, University of Wisconsin-Madison, Madison, WI, USA.
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Fukino N, Ohara T, Monforte AJ, Sugiyama M, Sakata Y, Kunihisa M, Matsumoto S. Identification of QTLs for resistance to powdery mildew and SSR markers diagnostic for powdery mildew resistance genes in melon (Cucumis melo L.). TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2008; 118:165-75. [PMID: 18797839 DOI: 10.1007/s00122-008-0885-1] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2008] [Accepted: 08/23/2008] [Indexed: 05/06/2023]
Abstract
Powdery mildew caused by Podosphaera xanthii is an important foliar disease in melon. To find molecular markers for marker-assisted selection, we constructed a genetic linkage map of melon based on a population of 93 recombinant inbred lines derived from crosses between highly resistant AR 5 and susceptible 'Earl's Favourite (Harukei 3)'. The map spans 877 cM and consists of 167 markers, comprising 157 simple sequence repeats (SSRs), 7 sequence characterized amplified region/cleavage amplified polymorphic sequence markers and 3 phenotypic markers segregating into 20 linkage groups. Among them, 37 SSRs and 6 other markers were common to previous maps. Quantitative trait locus (QTL) analysis identified two loci for resistance to powdery mildew. The effects of these QTLs varied depending on strain and plant stage. The percentage of phenotypic variance explained for resistance to the pxA strain was similar between QTLs (R (2) = 22-28%). For resistance to pxB strain, the QTL on linkage group (LG) XII was responsible for much more of the variance (41-46%) than that on LG IIA (12-13%). The QTL on LG IIA was located between two SSR markers. Using an independent population, we demonstrated the effectiveness of these markers. This is the first report of universal and effective markers linked to a gene for powdery mildew resistance in melon.
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Affiliation(s)
- Nobuko Fukino
- National Institute of Vegetable and Tea Science (NIVTS), 360 Kusawa, Ano, Tsu, Mie, 514-2392, Japan.
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Cuevas HE, Staub JE, Simon PW, Zalapa JE, McCreight JD. Mapping of genetic loci that regulate quantity of beta-carotene in fruit of US Western Shipping melon (Cucumis melo L.). TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2008; 117:1345-59. [PMID: 18773190 DOI: 10.1007/s00122-008-0868-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2008] [Accepted: 08/12/2008] [Indexed: 05/03/2023]
Abstract
Melon (Cucumis melo L.) is highly nutritious vegetable species and an important source of beta-carotene (Vitamin A), which is an important nutrient in the human diet. A previously developed set of 81 recombinant inbred lines (RIL) derived from Group Cantalupensis US Western Shipper market type germplasm was examined in two locations [Wisconsin (WI) and California (CA), USA] over 2 years to identify quantitative trait loci (QTL) associated with quantity of beta-carotene (QbetaC) in mature fruit. A moderately saturated 256-point RIL-based map [104 SSR, 7 CAPS, 4 SNP in putative carotenoid candidate genes, 140 dominant markers and one morphological trait (a) spanning 12 linkage groups (LG)] was used for QbetaC-QTL analysis. Eight QTL were detected in this evaluation that were distributed across four LG that explained a significant portion of the associated phenotypic variation for QbetaC (R (2) = 8 to 31.0%). Broad sense heritabilities for QbetaC obtained from RIL grown in WI. and CA were 0.56 and 0.68, respectively, and 0.62 over combined locations. The consistence of QbetaC in high/low RIL within location across years was confirmed in experiments conducted over 2 years. QTL map positions were not uniformly associated with putative carotenoid genes, although one QTL (beta-car6.1) interval was located 10 cM from a beta-carotene hydroxylase gene. These results suggest that accumulation of beta-carotene in melon is under complex genetic control. This study provides the initial step for defining the genetic control of QbetaC in melon leading to the development of varieties with enhanced beta-carotene content.
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Affiliation(s)
- H E Cuevas
- US Department of Agriculture, Agricultural Research Service, Vegetable Crops Unit, Department of Horticulture, University of Wisconsin, 1575 Linden Dr., Madison, WI 53706, USA,
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