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Rivas JG, Gutierrez AV, Defacio RA, Schimpf J, Vicario AL, Hopp HE, Paniego NB, Lia VV. Morphological and genetic diversity of maize landraces along an altitudinal gradient in the Southern Andes. PLoS One 2022; 17:e0271424. [PMID: 36542628 PMCID: PMC9770441 DOI: 10.1371/journal.pone.0271424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Accepted: 12/06/2022] [Indexed: 12/24/2022] Open
Abstract
Maize (Zea mays ssp. mays) is a major cereal crop worldwide and is traditionally or commercially cultivated almost all over the Americas. The North-Western Argentina (NWA) region constitutes one of the main diversity hotspots of the Southern Andes, with contrasting landscapes and a large number of landraces. Despite the extensive collections performed by the "Banco Activo de Germoplasma INTA Pergamino, Argentina" (BAP), most of them have not been characterized yet. Here we report the morphological and molecular evaluation of 30 accessions collected from NWA, along an altitudinal gradient between 1120 and 2950 meters above sea level (masl). Assessment of morphological variation in a common garden allowed the discrimination of two groups, which differed mainly in endosperm type and overall plant size. Although the groups retrieved by the molecular analyses were not consistent with morphological clusters, they showed a clear pattern of altitudinal structuring. Affinities among accessions were not in accordance with racial assignments. Overall, our results revealed that there are two maize gene pools co-existing in NWA, probably resulting from various waves of maize introduction in pre-Columbian times as well as from the adoption of modern varieties by local farmers. In conclusion, the NWA maize landraces preserved at the BAP possess high morphological and molecular variability. Our results highlight their potential as a source of diversity for increasing the genetic basis of breeding programs and provide useful information to guide future sampling and conservation efforts.
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Affiliation(s)
- Juan Gabriel Rivas
- Instituto de Agrobiotecnología y Biología Molecular (IABIMO), Instituto Nacional de Tecnología Agropecuaria (INTA), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Angela Veronica Gutierrez
- Instituto de Agrobiotecnología y Biología Molecular (IABIMO), Instituto Nacional de Tecnología Agropecuaria (INTA), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Raquel Alicia Defacio
- Instituto Nacional de Tecnología Agropecuaria (INTA), Estación Experimental Agropecuaria Pergamino, Buenos Aires, Argentina
| | - Jorge Schimpf
- Facultad de Ciencias Agrarias, Universidad Nacional de Jujuy, Jujuy, Argentina
| | - Ana Laura Vicario
- Laboratorio de Marcadores Moleculares y Fitopatología, Instituto Nacional de Semillas, (INASE), Buenos Aires, Argentina
| | - Horacio Esteban Hopp
- Instituto de Agrobiotecnología y Biología Molecular (IABIMO), Instituto Nacional de Tecnología Agropecuaria (INTA), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
- Facultad de Ciencias Exactas y Naturales Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Norma Beatriz Paniego
- Instituto de Agrobiotecnología y Biología Molecular (IABIMO), Instituto Nacional de Tecnología Agropecuaria (INTA), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Veronica Viviana Lia
- Instituto de Agrobiotecnología y Biología Molecular (IABIMO), Instituto Nacional de Tecnología Agropecuaria (INTA), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
- Facultad de Ciencias Exactas y Naturales Universidad de Buenos Aires, Buenos Aires, Argentina
- * E-mail:
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Mathiang EA, Sa KJ, Park H, Kim YJ, Lee JK. Genetic Diversity and Population Structure of Normal Maize Germplasm Collected in South Sudan Revealed by SSR Markers. PLANTS (BASEL, SWITZERLAND) 2022; 11:2787. [PMID: 36297809 PMCID: PMC9611378 DOI: 10.3390/plants11202787] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Revised: 10/16/2022] [Accepted: 10/17/2022] [Indexed: 06/16/2023]
Abstract
Maize is one of the leading global cereals, and in South Sudan maize cultivation occurs in nearly all of the country's agro-ecological zones. Despite its widespread cultivation, farmers in South Sudan depend on undeveloped varieties, which results in very low yields in the field. In the current study, 27 simple sequence repeat (SSR) markers were used to investigate genetic diversity and population structures among 37 landrace maize accessions collected from farmers' fields in South Sudan. In total, 200 alleles were revealed with an average of 7.4 alleles per locus and a range from 3.0 to 13.0 alleles per locus. The observed heterozygosity values ranged from 0.06 to 0.91 with an average of 0.35. High polymorphic information content (PIC) values were identified with a mean of 0.69, which indicates the informativeness of the chosen SSR loci. Genetic structure analysis revealed a moderate genetic differentiation among the maize populations with a fixation index of 0.16, while there was very high genetic differentiation within the groups of populations of three regions with a mean fixation index (F) of 0.37. An unweighted pair group method with an arithmetic mean (UPGMA) dendrogram clustered the 37 maize accessions into three groups with 43% genetic similarity. The clustering pattern of the maize accessions was moderately consistent with their collection area. The findings of this study will provide maize breeders with a better understanding of maize diversification as well as a reserve of genetic resources for use in the selection of advantageous and useful resources for the development of maize varieties in South Sudan.
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Affiliation(s)
- Emmanuel Andrea Mathiang
- Department of Applied Plant Sciences, College of Agriculture and Life Sciences, Kangwon National University, Chuncheon 24341, Korea
| | - Kyu Jin Sa
- Department of Applied Plant Sciences, College of Agriculture and Life Sciences, Kangwon National University, Chuncheon 24341, Korea
| | - Hyeon Park
- Department of Applied Plant Sciences, College of Agriculture and Life Sciences, Kangwon National University, Chuncheon 24341, Korea
- Interdisciplinary Program in Smart Agriculture, Kangwon National University, Chuncheon 24341, Korea
| | - Yeon Joon Kim
- Department of Applied Plant Sciences, College of Agriculture and Life Sciences, Kangwon National University, Chuncheon 24341, Korea
| | - Ju Kyong Lee
- Department of Applied Plant Sciences, College of Agriculture and Life Sciences, Kangwon National University, Chuncheon 24341, Korea
- Interdisciplinary Program in Smart Agriculture, Kangwon National University, Chuncheon 24341, Korea
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Cretazzo E, Moreno Sanz P, Lorenzi S, Benítez ML, Velasco L, Emanuelli F. Genetic Characterization by SSR Markers of a Comprehensive Wine Grape Collection Conserved at Rancho de la Merced (Andalusia, Spain). PLANTS 2022; 11:plants11081088. [PMID: 35448817 PMCID: PMC9028831 DOI: 10.3390/plants11081088] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Revised: 04/02/2022] [Accepted: 04/13/2022] [Indexed: 11/16/2022]
Abstract
The IFAPA research center “Rancho de la Merced” (Jerez, Spain) hosts one of the oldest and most diverse grapevine germplasm repositories in Europe, and is aimed at providing feasible solutions to deal with any agronomic trait by exploring its genetic variability and by means of association and Deoxyribonucleic Acid (DNA) editing studies. In this work, we focused on a wine and dual-use grapevine subcollection that consists of 930 accessions. Genetic analysis allowed to identify 521 unique genotypes. After comparing them with several databases, matches were found for 476 genetic profiles while the remaining 45 have not been previously described. Combination with clustering analysis suggested a total pool of 481 Vitis vinifera accessions that included some table cultivars. Several synonymies, homonymies and mislabeling have also been detected. Structure analysis allowed identifying six clusters according to eco-geographic cultivation areas and one additional group including non-vinifera accessions. Diversity analysis pointed out that Spanish Mediterranean varieties are genetically closer to oriental genotypes than to European varieties typical of oceanic and continental climates. The origin of Spanish varieties is discussed in depth considering our data and previous studies. Analysis of molecular variance partition confirmed a well-structured germplasm, although differentiation among groups had a much lower effect on genetic variability than differences within groups, which are strongly related to a very high heterozygosity. A core collection that covers all allele richness is proposed. It is constituted of about 13% of total accessions, and each cluster inferred by structure analysis is represented.
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Affiliation(s)
- Enrico Cretazzo
- Área de Mejora Vegetal y Biotecnología, Instituto de Investigación y Formación Agraria, Pesquera, Alimentaria y de la Producción Ecológica (IFAPA), Centro Rancho de la Merced, 11471 Jerez de la Frontera, Spain;
- Correspondence:
| | - Paula Moreno Sanz
- Dipartimento di Biologia Cellulare, Computazionale e Integrata, University of Trento, 38122 Trento, Italy;
| | - Silvia Lorenzi
- Research and Innovation Center, Fondazione Edmund Mach (FEM), 38010 San Michele All’Adige, Italy; (S.L.); (F.E.)
| | - Miguel Lara Benítez
- Área de Mejora Vegetal y Biotecnología, Instituto de Investigación y Formación Agraria, Pesquera, Alimentaria y de la Producción Ecológica (IFAPA), Centro Rancho de la Merced, 11471 Jerez de la Frontera, Spain;
| | - Leonardo Velasco
- Área de Protección Vegetal Sostenible, Instituto de Investigación y Formación Agraria, Pesquera, Alimentaria y de la Producción Ecológica (IFAPA), Centro de Málaga, 29140 Malaga, Spain;
| | - Francesco Emanuelli
- Research and Innovation Center, Fondazione Edmund Mach (FEM), 38010 San Michele All’Adige, Italy; (S.L.); (F.E.)
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Population Structure Analysis and Association Mapping for Turcicum Leaf Blight Resistance in Tropical Maize Using SSR Markers. Genes (Basel) 2022; 13:genes13040618. [PMID: 35456424 PMCID: PMC9030036 DOI: 10.3390/genes13040618] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Revised: 03/26/2022] [Accepted: 03/28/2022] [Indexed: 12/04/2022] Open
Abstract
Maize is an important cereal crop in the world for feed, food, fodder, and raw materials of industries. Turcicum leaf blight (TLB) is a major foliar disease that can cause more than 50% yield losses in maize. Considering this, the molecular diversity, population structure, and genome-wide association study (GWAS) for TLB resistance were studied in 288 diverse inbred lines genotyped using 89 polymorphic simple sequence repeats (SSR) markers. These lines werescreened for TLB disease at two hot-spot locations under artificially inoculated conditions. The average percent disease incidence (PDI) calculated for each genotype ranged from 17 (UMI 1201) to 78% (IML 12-22) with an overall mean of 40%. The numbers of alleles detected at a locus ranged from twoto nine, with a total of 388 alleles. The polymorphic information content (PIC) of each marker ranged between 0.04 and 0.86. Out of 89 markers, 47 markers were highly polymorphic (PIC ≥ 0.60). This indicated that the SSR markers used were very informative and suitable for genetic diversity, population structure, and marker-trait association studies.The overall observed homozygosity for highly polymorphic markers was 0.98, which indicated that lines used were genetically pure. Neighbor-joining clustering, factorial analysis, and population structure studies clustered the 288 lines into 3–5 groups. The patterns of grouping were in agreement with the origin and pedigree records of the genotypesto a greater extent.A total of 94.10% lines were successfully assigned to one or another group at a membership probability of ≥0.60. An analysis of molecular variance (AMOVA) revealed highly significant differences among populations and within individuals. Linkage disequilibrium for r2 and D′ between loci ranged from 0 to 0.77 and 0 to 1, respectively. A marker trait association analysis carried out using a general linear model (GLM) and mixed linear model (MLM), identified 15 SSRs markers significantly associated with TLB resistance.These 15 markers were located on almost all chromosomes (Chr) except 7, 8, and 9. The phenotypic variation explained by these loci ranged from 6% (umc1367) to 26% (nc130, phi085). Maximum 7 associated markers were located together on Chr 2 and 5. The selected regions identified on Chr 2 and 5 corroborated the previous studies carried out in the Indian maize germplasm. Further, 11 candidate genes were identified to be associated with significant markers. The identified sources for TLB resistance and associated markers may be utilized in molecular breeding for the development of suitable genotypes.
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Gálvez Ranilla L. The Application of Metabolomics for the Study of Cereal Corn ( Zea mays L.). Metabolites 2020; 10:E300. [PMID: 32717792 PMCID: PMC7463750 DOI: 10.3390/metabo10080300] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2020] [Revised: 07/17/2020] [Accepted: 07/20/2020] [Indexed: 12/11/2022] Open
Abstract
Corn (Zea mays L.) is an important cereal crop indigenous to the Americas, where its genetic biodiversity is still preserved, especially among native populations from Mesoamerica and South America. The use of metabolomics in corn has mainly focused on understanding the potential differences of corn metabolomes under different biotic and abiotic stresses or to evaluate the influence of genetic and environmental factors. The increase of diet-linked non-communicable diseases has increased the interest to optimize the content of bioactive secondary metabolites in current corn breeding programs to produce novel functional foods. This review provides perspectives on the role of metabolomics in the characterization of health-relevant metabolites in corn biodiversity and emphasizes the integration of metabolomics in breeding strategies targeting the enrichment of phenolic bioactive metabolites such as anthocyanins in corn kernels.
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Affiliation(s)
- Lena Gálvez Ranilla
- Laboratory of Research in Food Science, Universidad Catolica de Santa Maria, Urb. San Jose s/n, 04013 Arequipa, Peru
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Li S, Ji F, Hou F, Cui H, Shi Q, Xing G, Weng Y, Kang X. Characterization of Hemerocallis citrina Transcriptome and Development of EST-SSR Markers for Evaluation of Genetic Diversity and Population Structure of Hemerocallis Collection. FRONTIERS IN PLANT SCIENCE 2020; 11:686. [PMID: 32595657 PMCID: PMC7300269 DOI: 10.3389/fpls.2020.00686] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2019] [Accepted: 04/30/2020] [Indexed: 05/13/2023]
Abstract
Hemerocallis spp. commonly known as daylilies and night lilies, are among the most popular ornamental crops worldwide. In Eastern Asia, H. citrina is also widely cultivated as both a vegetable crop and for medicinal use. However, limited genetic and genomic resources are available in Hemerocallis. Knowledge on the genetic diversity and population structure of this species-rich genus is very limited. In this study, we reported transcriptome sequencing of H. citrina cv. 'Datonghuanghua' which is a popular, high-yielding variety in China. We mined the transcriptome data, identified and characterized the microsatellite or simple sequence repeat (SSR) sequences in the expressed genome. From ∼14.15 Gbp clean reads, we assembled 92,107 unigenes, of which 41,796 were annotated for possible functions. From 41,796 unigenes, we identified and characterized 3,430 SSRs with varying motifs. Forty-three SSRs were used to fingerprint 155 Hemerocallis accessions. Clustering and population structure analyses with the genotypic data among the 155 accessions reveal broader genetic variation of daylilies than the night lily accessions which form a subgroup in the phylogenetic tree. The night lily group included accessions from H. citrina, H. lilioasphodelus, and H. minor, the majority of which bloom in the evening/night, whereas the ∼100 daylily accessions bloomed in the early morning suggesting flowering time may be a major force in the selection of night lily. The utility of these SSRs was further exemplified in association analysis of blooming time among these accessions. Twelve SSRs were found to have significant associations with this horticulturally important trait.
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Affiliation(s)
- Sen Li
- College of Horticulture, Shanxi Agricultural University, Taigu, China
- Collaborative Innovation Center for Improving Quality and Increase Profits of Protected Vegetables in Shanxi, Taigu, China
- *Correspondence: Sen Li,
| | - Fangfang Ji
- College of Horticulture, Shanxi Agricultural University, Taigu, China
- Collaborative Innovation Center for Improving Quality and Increase Profits of Protected Vegetables in Shanxi, Taigu, China
| | - Feifan Hou
- College of Horticulture, Shanxi Agricultural University, Taigu, China
- Collaborative Innovation Center for Improving Quality and Increase Profits of Protected Vegetables in Shanxi, Taigu, China
| | - Huliang Cui
- College of Horticulture, Shanxi Agricultural University, Taigu, China
- Collaborative Innovation Center for Improving Quality and Increase Profits of Protected Vegetables in Shanxi, Taigu, China
| | - Qingqing Shi
- College of Horticulture, Shanxi Agricultural University, Taigu, China
- Collaborative Innovation Center for Improving Quality and Increase Profits of Protected Vegetables in Shanxi, Taigu, China
| | - Guoming Xing
- College of Horticulture, Shanxi Agricultural University, Taigu, China
- Collaborative Innovation Center for Improving Quality and Increase Profits of Protected Vegetables in Shanxi, Taigu, China
| | - Yiqun Weng
- Agricultural Research Service, United States Department of Agriculture (USDA-ARS), Vegetable Crops Research Unit, Horticulture Department, University of Wisconsin, Madison, WI, United States
- Yiqun Weng,
| | - Xiuping Kang
- College of Horticulture, Shanxi Agricultural University, Taigu, China
- Collaborative Innovation Center for Improving Quality and Increase Profits of Protected Vegetables in Shanxi, Taigu, China
- Xiuping Kang,
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Realini MF, Poggio L, Cámara Hernández J, González GE. Exploring karyotype diversity of Argentinian Guaraní maize landraces: Relationship among South American maize. PLoS One 2018; 13:e0198398. [PMID: 29879173 PMCID: PMC5991688 DOI: 10.1371/journal.pone.0198398] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2017] [Accepted: 05/20/2018] [Indexed: 12/04/2022] Open
Abstract
In Argentina there are two different centers of maize diversity, the Northeastern (NEA) and the Northwestern (NWA) regions of the country. In NEA, morphological studies identified 15 landraces cultivated by the Guaraní communities in Misiones Province. In the present study we analyzed the karyotype diversity of 20 populations of Guaraní maize landraces through classical and molecular cytogenetic analyses. Our results demonstrate significant intra and inter-populational variation in the percentage, number, size, chromosome position and frequencies of the heterochromatic blocks, which are called knobs. Knob sequence analysis (180-bp and TR-1) did not show significant differences among Guaraní populations. B chromosomes were not detected, and abnormal 10 (AB10) chromosomes were found with low frequency (0.1≥f ≤0.40) in six populations. Our results allowed karyotypic characterization of each analyzed population, defining for the first time the chromosomal constitution of maize germplasm from NEA. The multivariate analysis (PCoA and UPGMA) of karyotype parameters allowed the distinction between two populations groups: the Popcorn and the Floury maize populations. These results are in agreement with previously published microsatellite and morphological/phenological studies. Finally, we compared our karyotype results with those previously reported for NWA and Central Region of South America maize. Our data suggest that there are important differences between maize from NEA and NWA at the karyotype level, supporting the hypothesis that there are two pathways of input of South America maize. Our results also confirm the existence of two centers of diversification of Argentinian native maize, NWA and NEA. This work contributes new knowledge about maize diversity, which is relevant for future plans to improve commercial maize, and for conservation of agrobiodiversity.
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Affiliation(s)
- María Florencia Realini
- Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Departamento de Ecología, Genética y Evolución, Laboratorio de Citogenética y Evolución (LaCyE), Ciudad Autónoma de Buenos Aires, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Instituto de Ecología, Genética y Evolución (IEGEBA), Ciudad Autónoma de Buenos Aires, Argentina
| | - Lidia Poggio
- Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Departamento de Ecología, Genética y Evolución, Laboratorio de Citogenética y Evolución (LaCyE), Ciudad Autónoma de Buenos Aires, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Instituto de Ecología, Genética y Evolución (IEGEBA), Ciudad Autónoma de Buenos Aires, Argentina
| | - Julián Cámara Hernández
- Cátedra de Botánica Agrícola, Facultad de Agronomía, Universidad de Buenos Aires, Ciudad Autónoma de Buenos Aires, Argentina
| | - Graciela Esther González
- Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Departamento de Ecología, Genética y Evolución, Laboratorio de Citogenética y Evolución (LaCyE), Ciudad Autónoma de Buenos Aires, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Instituto de Ecología, Genética y Evolución (IEGEBA), Ciudad Autónoma de Buenos Aires, Argentina
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Fourastié MF, Gottlieb AM, Poggio L, González GE. Are cytological parameters of maize landraces (Zea mays ssp. mays) adapted along an altitudinal cline? JOURNAL OF PLANT RESEARCH 2018; 131:285-296. [PMID: 29177755 DOI: 10.1007/s10265-017-0996-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Accepted: 10/02/2017] [Indexed: 06/07/2023]
Abstract
The Northwestern Argentina (NWA) highland region is one of the southernmost areas of native maize cultivation. We studied variations of different cytological parameters, such as DNA contents, presence/absence of B chromosomes (Bs), and number and sequence composition of heterochromatic knobs in ten accessions of four maize landraces growing along a broad altitudinal cline in NWA. The aim of this work was to assess variations in cytological parameters and their relationship with the crop altitude of cultivation, in an adaptive context. The A-DNA content of the A chromosome complements showed 40% of difference between the lowest (4.5 pg) and the highest (6.3 pg) 2C value. This variation could be attributed to differences in number and size of heterochromatic knobs. Fluorescent in situ hybridization studies revealed the sequence composition of each knob, with a higher proportion of knobs composed of 180-bp repeats rather than TR-1 repeats, in all accessions. We also found numerical polymorphisms and the highest frequency of Bs reported in maize to this date. These results lead us to propose that the frequencies and doses of Bs are influenced by the landrace genotypical make-up. The Bs might be maintained in higher frequencies in those accessions having lower heterochromatin content, so as to preserve an optimal nucleotype. Furthermore, selective forces acting along the altitudinal gradient might be modulating the cytological parameters studied, as suggested by the significant correlations found among them.
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Affiliation(s)
- María Florencia Fourastié
- Laboratorio de Citogenética y Evolución (LaCyE), Departamento de Ecología, Genética y Evolución, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
- Instituto de Ecología, Genética y Evolución de Buenos Aires (IEGEBA), CONICET-Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Alexandra Marina Gottlieb
- Laboratorio de Citogenética y Evolución (LaCyE), Departamento de Ecología, Genética y Evolución, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
- Instituto de Ecología, Genética y Evolución de Buenos Aires (IEGEBA), CONICET-Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Lidia Poggio
- Laboratorio de Citogenética y Evolución (LaCyE), Departamento de Ecología, Genética y Evolución, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
- Instituto de Ecología, Genética y Evolución de Buenos Aires (IEGEBA), CONICET-Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Graciela Esther González
- Laboratorio de Citogenética y Evolución (LaCyE), Departamento de Ecología, Genética y Evolución, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina.
- Instituto de Ecología, Genética y Evolución de Buenos Aires (IEGEBA), CONICET-Universidad de Buenos Aires, Buenos Aires, Argentina.
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Costa EN, Nogueira L, de Souza BHS, Ribeiro ZA, Louvandini H, Zukoff SN, Júnior ALB. Characterization of Antibiosis to Diabrotica speciosa (Coleoptera: Chrysomelidae) in Brazilian Maize Landraces. JOURNAL OF ECONOMIC ENTOMOLOGY 2018; 111:454-462. [PMID: 29340603 DOI: 10.1093/jee/tox350] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Resistance to insect pests can be found in several native, landrace plants and can be an important alternative to conventional control methods. Diabrotica speciosa (Germar) (Coleoptera: Chrysomelidae) larvae are important maize (Zea mays L.) (Cyperales: Poaceae) root pests and finding native resistance in landraces would greatly contribute to maize-breeding programs aimed at controlling this pest. This study investigated whether the growth, survival, oviposition rhythm, fecundity, and fertility of D. speciosa are negatively influenced by specific maize landraces, and the existence of any morphological barriers in the roots that may correlate with plant resistance to the larval attack. Nineteen genotypes (17 landraces and 2 cultivars) were screened for antibiosis in assays that were conducted in the laboratory using seedling maize plants where the development time, longevity, weight, total survival, and sex ratio of adults were evaluated. Out of nineteen genotypes, eight were selected according to their resistance levels for an additional rearing study evaluating oviposition and fecundity. Landrace Pérola and cultivar SCS 154-Fortuna were classified as resistant because they increased the maturation period from larva to adult and decreased survivorship; and the landrace Palha Roxa was also classified as resistant for showing a lower fertility rate than other landraces. Resistant landraces that were infested by D. speciosa larvae showed greater amounts of some morphological barriers comparing with uninfested plants. The landraces classified as resistant may be considered in future plant-breeding programs, aiming to develop resistant maize cultivars to D. speciosa larval attack.
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Affiliation(s)
- Eduardo Neves Costa
- Departamento de Fitossanidade, Faculdade de Ciências Agrárias e Veterinárias, Campus de Jaboticabal, Universidade Estadual Paulista (UNESP), Jaboticabal, São Paulo, Brazil
- Departamento de Agronomia, Faculdade de Ciências Agrárias, Universidade Federal da Grande Dourados (UFGD), Dourados, Mato Grosso do Sul, Brazil
| | - Luciano Nogueira
- Departamento de Fitossanidade, Faculdade de Ciências Agrárias e Veterinárias, Campus de Jaboticabal, Universidade Estadual Paulista (UNESP), Jaboticabal, São Paulo, Brazil
| | | | - Zulene Antônio Ribeiro
- Departamento de Fitossanidade, Faculdade de Ciências Agrárias e Veterinárias, Campus de Jaboticabal, Universidade Estadual Paulista (UNESP), Jaboticabal, São Paulo, Brazil
| | - Helder Louvandini
- Centro de Energia Nuclear na Agricultura-CENA/USP, Laboratório de Nutrição Animal, Universidade de São Paulo, Piracicaba, São Paulo, Brazil
| | - Sarah Natalie Zukoff
- Southwest Research and Extension Center, Kansas State University, Garden City, KS
| | - Arlindo Leal Boiça Júnior
- Departamento de Fitossanidade, Faculdade de Ciências Agrárias e Veterinárias, Campus de Jaboticabal, Universidade Estadual Paulista (UNESP), Jaboticabal, São Paulo, Brazil
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Bedoya CA, Dreisigacker S, Hearne S, Franco J, Mir C, Prasanna BM, Taba S, Charcosset A, Warburton ML. Genetic diversity and population structure of native maize populations in Latin America and the Caribbean. PLoS One 2017; 12:e0173488. [PMID: 28403177 PMCID: PMC5389613 DOI: 10.1371/journal.pone.0173488] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2016] [Accepted: 02/21/2017] [Indexed: 11/19/2022] Open
Abstract
This study describes the genetic diversity and population structure of 194 native maize populations from 23 countries of Latin America and the Caribbean. The germplasm, representing 131 distinct landraces, was genetically characterized as population bulks using 28 SSR markers. Three main groups of maize germplasm were identified. The first, the Mexico and Southern Andes group, highlights the Pre-Columbian and modern exchange of germplasm between North and South America. The second group, Mesoamerica lowland, supports the hypothesis that two separate human migration events could have contributed to Caribbean maize germplasm. The third, the Andean group, displayed early introduction of maize into the Andes, with little mixing since then, other than a regional interchange zone active in the past. Events and activities in the pre- and post-Columbian Americas including the development and expansion of pre-Columbian cultures and the arrival of Europeans to the Americas are discussed in relation to the history of maize migration from its point of domestication in Mesoamerica to South America and the Caribbean through sea and land routes.
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Affiliation(s)
- Claudia A. Bedoya
- International Maize and Wheat Improvement Center, Applied Biotechnology Center, Texcoco, Mexico
- Universitat de les Illes Balears, Departament de Biologia, Illes Balears, Spain
| | - Susanne Dreisigacker
- International Maize and Wheat Improvement Center, Applied Biotechnology Center, Texcoco, Mexico
| | - Sarah Hearne
- International Maize and Wheat Improvement Center, Applied Biotechnology Center, Texcoco, Mexico
| | - Jorge Franco
- Universidad de la Republica, Facultad de Agronomía, Estadística y Computación, Paysandú, Uruguay
| | - Celine Mir
- Unité Mixte de Recherche de Génétique Végétale, Institut National de la Recherche Agronomique–Université Paris Sud–Centre National de la Recherche Scientifique -AgroParisTech, Yvette, France
| | - Boddupalli M. Prasanna
- International Maize and Wheat Improvement Center, Applied Biotechnology Center, Texcoco, Mexico
| | - Suketoshi Taba
- International Maize and Wheat Improvement Center, Applied Biotechnology Center, Texcoco, Mexico
| | - Alain Charcosset
- Unité Mixte de Recherche de Génétique Végétale, Institut National de la Recherche Agronomique–Université Paris Sud–Centre National de la Recherche Scientifique -AgroParisTech, Yvette, France
| | - Marilyn L. Warburton
- United States Department of Agriculture, Corn Host Plant Research Resistance Unit, Mississippi State University, Mississippi State, MS, United States of America
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11
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Bracco M, Cascales J, Hernández JC, Poggio L, Gottlieb AM, Lia VV. Dissecting maize diversity in lowland South America: genetic structure and geographic distribution models. BMC PLANT BIOLOGY 2016; 16:186. [PMID: 27561710 PMCID: PMC5000442 DOI: 10.1186/s12870-016-0874-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2016] [Accepted: 08/15/2016] [Indexed: 05/13/2023]
Abstract
BACKGROUND Maize landraces from South America have traditionally been assigned to two main categories: Andean and Tropical Lowland germplasm. However, the genetic structure and affiliations of the lowland gene pools have been difficult to assess due to limited sampling and the lack of comparative analysis. Here, we examined SSR and Adh2 sequence variation in a diverse sample of maize landraces from lowland middle South America, and performed a comprehensive integrative analysis of population structure and diversity including already published data of archaeological and extant specimens from the Americas. Geographic distribution models were used to explore the relationship between environmental factors and the observed genetic structure. RESULTS Bayesian and multivariate analyses of population structure showed the existence of two previously overlooked lowland gene pools associated with Guaraní indigenous communities of middle South America. The singularity of this germplasm was also evidenced by the frequency distribution of microsatellite repeat motifs of the Adh2 locus and the distinct spatial pattern inferred from geographic distribution models. CONCLUSION Our results challenge the prevailing view that lowland middle South America is just a contact zone between Andean and Tropical Lowland germplasm and highlight the occurrence of a unique, locally adapted gene pool. This information is relevant for the conservation and utilization of maize genetic resources, as well as for a better understanding of environment-genotype associations.
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Affiliation(s)
- Mariana Bracco
- Departamento de Ecología, Genética y Evolución, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Intendente Güiraldes y Costanera Norte s/n, 4to, Piso, Pabellón II, Ciudad Universitaria, C1428EHA Ciudad Autónoma de Buenos Aires, Argentina
- Escuela de Ciencias Agrarias, Naturales y Ambientales, Universidad Nacional del Noroeste de la Provincia de Buenos Aires, Av. Pte. Dr. Arturo Frondizi, N° 2650 Pergamino, Buenos Aires Argentina
| | - Jimena Cascales
- Departamento de Ecología, Genética y Evolución, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Intendente Güiraldes y Costanera Norte s/n, 4to, Piso, Pabellón II, Ciudad Universitaria, C1428EHA Ciudad Autónoma de Buenos Aires, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Avenida Rivadavia 1917, C1033AAJ Ciudad Autónoma de Buenos Aires, Argentina
| | - Julián Cámara Hernández
- Facultad de Agronomía, Universidad de Buenos Aires, Av. San Martín 4453, C1417DSE Ciudad Autónoma de Buenos Aires, Argentina
| | - Lidia Poggio
- Departamento de Ecología, Genética y Evolución, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Intendente Güiraldes y Costanera Norte s/n, 4to, Piso, Pabellón II, Ciudad Universitaria, C1428EHA Ciudad Autónoma de Buenos Aires, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Avenida Rivadavia 1917, C1033AAJ Ciudad Autónoma de Buenos Aires, Argentina
| | - Alexandra M. Gottlieb
- Departamento de Ecología, Genética y Evolución, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Intendente Güiraldes y Costanera Norte s/n, 4to, Piso, Pabellón II, Ciudad Universitaria, C1428EHA Ciudad Autónoma de Buenos Aires, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Avenida Rivadavia 1917, C1033AAJ Ciudad Autónoma de Buenos Aires, Argentina
| | - Verónica V. Lia
- Departamento de Ecología, Genética y Evolución, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Intendente Güiraldes y Costanera Norte s/n, 4to, Piso, Pabellón II, Ciudad Universitaria, C1428EHA Ciudad Autónoma de Buenos Aires, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Avenida Rivadavia 1917, C1033AAJ Ciudad Autónoma de Buenos Aires, Argentina
- Instituto de Biotecnología, CICVyA, INTA, N. Repetto y De las Cabañas s/n 1686, Hurlingham, Buenos Aires Argentina
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12
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Assessing the Genetic Diversity and Genealogical Reconstruction of Cypress (Cupressus funebris Endl.) Breeding Parents Using SSR Markers. FORESTS 2016. [DOI: 10.3390/f7080160] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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13
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Urrestarazu J, Denancé C, Ravon E, Guyader A, Guisnel R, Feugey L, Poncet C, Lateur M, Houben P, Ordidge M, Fernandez-Fernandez F, Evans KM, Paprstein F, Sedlak J, Nybom H, Garkava-Gustavsson L, Miranda C, Gassmann J, Kellerhals M, Suprun I, Pikunova AV, Krasova NG, Torutaeva E, Dondini L, Tartarini S, Laurens F, Durel CE. Analysis of the genetic diversity and structure across a wide range of germplasm reveals prominent gene flow in apple at the European level. BMC PLANT BIOLOGY 2016; 16:130. [PMID: 27277533 PMCID: PMC4898379 DOI: 10.1186/s12870-016-0818-0] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2016] [Accepted: 05/23/2016] [Indexed: 05/18/2023]
Abstract
BACKGROUND The amount and structure of genetic diversity in dessert apple germplasm conserved at a European level is mostly unknown, since all diversity studies conducted in Europe until now have been performed on regional or national collections. Here, we applied a common set of 16 SSR markers to genotype more than 2,400 accessions across 14 collections representing three broad European geographic regions (North + East, West and South) with the aim to analyze the extent, distribution and structure of variation in the apple genetic resources in Europe. RESULTS A Bayesian model-based clustering approach showed that diversity was organized in three groups, although these were only moderately differentiated (FST = 0.031). A nested Bayesian clustering approach allowed identification of subgroups which revealed internal patterns of substructure within the groups, allowing a finer delineation of the variation into eight subgroups (FST = 0.044). The first level of stratification revealed an asymmetric division of the germplasm among the three groups, and a clear association was found with the geographical regions of origin of the cultivars. The substructure revealed clear partitioning of genetic groups among countries, but also interesting associations between subgroups and breeding purposes of recent cultivars or particular usage such as cider production. Additional parentage analyses allowed us to identify both putative parents of more than 40 old and/or local cultivars giving interesting insights in the pedigree of some emblematic cultivars. CONCLUSIONS The variation found at group and subgroup levels may reflect a combination of historical processes of migration/selection and adaptive factors to diverse agricultural environments that, together with genetic drift, have resulted in extensive genetic variation but limited population structure. The European dessert apple germplasm represents an important source of genetic diversity with a strong historical and patrimonial value. The present work thus constitutes a decisive step in the field of conservation genetics. Moreover, the obtained data can be used for defining a European apple core collection useful for further identification of genomic regions associated with commercially important horticultural traits in apple through genome-wide association studies.
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Affiliation(s)
- Jorge Urrestarazu
- IRHS, INRA, AGROCAMPUS-Ouest, Université d'Angers, SFR 4207 QUASAV, 42 rue Georges Morel, 49071, Beaucouzé cedex, France
- Department of Agricultural Sciences, University of Bologna, Viale Giuseppe Fanin 44, 40127, Bologna, Italy
- Public University of Navarre (UPNA), Campus Arrosadia, 31006, Pamplona, Spain
| | - Caroline Denancé
- IRHS, INRA, AGROCAMPUS-Ouest, Université d'Angers, SFR 4207 QUASAV, 42 rue Georges Morel, 49071, Beaucouzé cedex, France
| | - Elisa Ravon
- IRHS, INRA, AGROCAMPUS-Ouest, Université d'Angers, SFR 4207 QUASAV, 42 rue Georges Morel, 49071, Beaucouzé cedex, France
| | - Arnaud Guyader
- IRHS, INRA, AGROCAMPUS-Ouest, Université d'Angers, SFR 4207 QUASAV, 42 rue Georges Morel, 49071, Beaucouzé cedex, France
| | - Rémi Guisnel
- IRHS, INRA, AGROCAMPUS-Ouest, Université d'Angers, SFR 4207 QUASAV, 42 rue Georges Morel, 49071, Beaucouzé cedex, France
| | - Laurence Feugey
- IRHS, INRA, AGROCAMPUS-Ouest, Université d'Angers, SFR 4207 QUASAV, 42 rue Georges Morel, 49071, Beaucouzé cedex, France
| | - Charles Poncet
- Plateforme Gentyane, INRA UMR1095 Genetics, Diversity and Ecophysiology of Cereals, 63100, Clermont-Ferrand, France
| | - Marc Lateur
- CRA-W, Centre Wallon de Recherches Agronomiques, Plant Breeding & Biodiversity, Bâtiment Emile Marchal, Rue de Liroux, 4 - 5030, Gembloux, Belgium
| | - Patrick Houben
- CRA-W, Centre Wallon de Recherches Agronomiques, Plant Breeding & Biodiversity, Bâtiment Emile Marchal, Rue de Liroux, 4 - 5030, Gembloux, Belgium
| | - Matthew Ordidge
- School of Agriculture, Policy and Development, University of Reading, Whiteknights, Reading, RG6 6AR, UK
| | | | - Kate M Evans
- Washington State University Tree Fruit Research and Extension Center, 1100 N Western Ave, Wenatchee, WA, 98801, USA
| | - Frantisek Paprstein
- RBIPH, Research and Breeding Institute of Pomology Holovousy Ltd., 508 01, Horice, Czech Republic
| | - Jiri Sedlak
- RBIPH, Research and Breeding Institute of Pomology Holovousy Ltd., 508 01, Horice, Czech Republic
| | - Hilde Nybom
- Department of Plant Breeding, Balsgård, Fjälkestadsvägen 459, Swedish University of Agricultural Sciences, 291 94, Kristianstad, Sweden
| | - Larisa Garkava-Gustavsson
- Department of Plant Breeding, Swedish University of Agricultural Sciences, Box 101, 230 53, Alnarp, Sweden
| | - Carlos Miranda
- Public University of Navarre (UPNA), Campus Arrosadia, 31006, Pamplona, Spain
| | - Jennifer Gassmann
- Agroscope, Institute for Plant Production Sciences IPS, Schloss 1, P.O. Box, 8820, Wädenswil, Switzerland
| | - Markus Kellerhals
- Agroscope, Institute for Plant Production Sciences IPS, Schloss 1, P.O. Box, 8820, Wädenswil, Switzerland
| | - Ivan Suprun
- NCRRIH&V, North Caucasian Regional Research Institute of Horticulture and Viticulture, 39, 40-letiya Pobedy street, Krasnodar, 350901, Russian Federation
| | - Anna V Pikunova
- VNIISPK, The All Russian Research Institute of Fruit Crop Breeding, 302530, p/o Zhilina, Orel district, Russian Federation
| | - Nina G Krasova
- VNIISPK, The All Russian Research Institute of Fruit Crop Breeding, 302530, p/o Zhilina, Orel district, Russian Federation
| | - Elnura Torutaeva
- Kyrgyz National Agrarian University, 68 Mederova Street, 720005, Bishkek, Kyrgyzstan
| | - Luca Dondini
- Department of Agricultural Sciences, University of Bologna, Viale Giuseppe Fanin 44, 40127, Bologna, Italy
| | - Stefano Tartarini
- Department of Agricultural Sciences, University of Bologna, Viale Giuseppe Fanin 44, 40127, Bologna, Italy
| | - François Laurens
- IRHS, INRA, AGROCAMPUS-Ouest, Université d'Angers, SFR 4207 QUASAV, 42 rue Georges Morel, 49071, Beaucouzé cedex, France
| | - Charles-Eric Durel
- IRHS, INRA, AGROCAMPUS-Ouest, Université d'Angers, SFR 4207 QUASAV, 42 rue Georges Morel, 49071, Beaucouzé cedex, France.
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14
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Mercati F, Catarcione G, Paolacci AR, Abenavoli MR, Sunseri F, Ciaffi M. Genetic diversity and population structure of an Italian landrace of runner bean (Phaseolus coccineus L.): inferences for its safeguard and on-farm conservation. Genetica 2015; 143:473-85. [PMID: 26036320 DOI: 10.1007/s10709-015-9846-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2014] [Accepted: 05/25/2015] [Indexed: 11/29/2022]
Abstract
The landraces are considered important sources of valuable germplasm for breeding activities to face climatic changes as well as to satisfy the requirement of new varieties for marginal areas. Runner bean (Phaseolus coccineus L.) is one of the most cultivated Phaseolus species worldwide, but few studies have been addressed to assess the genetic diversity and structure within and among landrace populations. In the present study, 20 different populations of a runner bean landrace from Central Italy named "Fagiolone," together with 41 accessions from Italy and Mesoamerica, were evaluated by using 14 nuclear SSRs to establish its genetic structure and distinctiveness. Results indicated that "Fagiolone" landrace can be considered as a dynamic evolving open-pollinated population that shows a significant level of genetic variation, mostly detected within populations, and the presence of two main genetic groups, of which one distinguished from other Italian runner bean landraces. Results highlighted also a relevant importance of farmers' management practices able to influence the genetic structure of this landrace, in particular the seed exchanges and selection, and the past introduction in cultivation of landraces/cultivars similar to seed morphology, but genetically rather far from "Fagiolone." The most suitable on-farm strategies for seed collection, conservation and multiplication will be defined based on our results, as a model for threatened populations of other allogamous crop species. STRUCTURE and phylogenetic analyses indicated that Mesoamerican accessions and Italian landraces belong to two distinct gene pools confirming the hypothesis that Europe could be considered a secondary diversification center for P. coccineus.
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Affiliation(s)
- F Mercati
- Dipartimento AGRARIA, Università Mediterranea di Reggio Calabria, 89124, Reggio Calabria, Italy
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15
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Filippi CV, Aguirre N, Rivas JG, Zubrzycki J, Puebla A, Cordes D, Moreno MV, Fusari CM, Alvarez D, Heinz RA, Hopp HE, Paniego NB, Lia VV. Population structure and genetic diversity characterization of a sunflower association mapping population using SSR and SNP markers. BMC PLANT BIOLOGY 2015; 15:52. [PMID: 25848813 PMCID: PMC4351844 DOI: 10.1186/s12870-014-0360-x] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2014] [Accepted: 11/27/2014] [Indexed: 05/20/2023]
Abstract
BACKGROUND Argentina has a long tradition of sunflower breeding, and its germplasm is a valuable genetic resource worldwide. However, knowledge of the genetic constitution and variability levels of the Argentinean germplasm is still scarce, rendering the global map of cultivated sunflower diversity incomplete. In this study, 42 microsatellite loci and 384 single nucleotide polymorphisms (SNPs) were used to characterize the first association mapping population used for quantitative trait loci mapping in sunflower, along with a selection of allied open-pollinated and composite populations from the germplasm bank of the National Institute of Agricultural Technology of Argentina. The ability of different kinds of markers to assess genetic diversity and population structure was also evaluated. RESULTS The analysis of polymorphism in the set of sunflower accessions studied here showed that both the microsatellites and SNP markers were informative for germplasm characterization, although to different extents. In general, the estimates of genetic variability were moderate. The average genetic diversity, as quantified by the expected heterozygosity, was 0.52 for SSR loci and 0.29 for SNPs. Within SSR markers, those derived from non-coding regions were able to capture higher levels of diversity than EST-SSR. A significant correlation was found between SSR and SNP- based genetic distances among accessions. Bayesian and multivariate methods were used to infer population structure. Evidence for the existence of three different genetic groups was found consistently across data sets (i.e., SSR, SNP and SSR + SNP), with the maintainer/restorer status being the most prevalent characteristic associated with group delimitation. CONCLUSION The present study constitutes the first report comparing the performance of SSR and SNP markers for population genetics analysis in cultivated sunflower. We show that the SSR and SNP panels examined here, either used separately or in conjunction, allowed consistent estimations of genetic diversity and population structure in sunflower breeding materials. The generated knowledge about the levels of diversity and population structure of sunflower germplasm is an important contribution to this crop breeding and conservation.
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Affiliation(s)
- Carla V Filippi
- />Instituto de Biotecnología, Centro de Investigaciones en Ciencias Veterinarias y Agronómicas (CICVyA), Instituto Nacional de Tecnología Agropecuaria (INTA), Nicolás Repetto y Los Reseros s/n (1686), Hurlingham, Buenos Aires Argentina
- />Consejo Nacional de Investigaciones Científicas y Técnicas–CONICET, Saavedra 15, C1083ACA Ciudad Autónoma de Buenos Aires, Argentina
| | - Natalia Aguirre
- />Instituto de Biotecnología, Centro de Investigaciones en Ciencias Veterinarias y Agronómicas (CICVyA), Instituto Nacional de Tecnología Agropecuaria (INTA), Nicolás Repetto y Los Reseros s/n (1686), Hurlingham, Buenos Aires Argentina
| | - Juan G Rivas
- />Instituto de Biotecnología, Centro de Investigaciones en Ciencias Veterinarias y Agronómicas (CICVyA), Instituto Nacional de Tecnología Agropecuaria (INTA), Nicolás Repetto y Los Reseros s/n (1686), Hurlingham, Buenos Aires Argentina
| | - Jeremias Zubrzycki
- />Instituto de Biotecnología, Centro de Investigaciones en Ciencias Veterinarias y Agronómicas (CICVyA), Instituto Nacional de Tecnología Agropecuaria (INTA), Nicolás Repetto y Los Reseros s/n (1686), Hurlingham, Buenos Aires Argentina
- />Consejo Nacional de Investigaciones Científicas y Técnicas–CONICET, Saavedra 15, C1083ACA Ciudad Autónoma de Buenos Aires, Argentina
| | - Andrea Puebla
- />Instituto de Biotecnología, Centro de Investigaciones en Ciencias Veterinarias y Agronómicas (CICVyA), Instituto Nacional de Tecnología Agropecuaria (INTA), Nicolás Repetto y Los Reseros s/n (1686), Hurlingham, Buenos Aires Argentina
| | - Diego Cordes
- />Estación Experimental Agropecuaria Manfredi, Ruta Nac. nro. 9 km 636 (5988), Manfredi, Córdoba (INTA) Argentina
| | - Maria V Moreno
- />Estación Experimental Agropecuaria Manfredi, Ruta Nac. nro. 9 km 636 (5988), Manfredi, Córdoba (INTA) Argentina
| | - Corina M Fusari
- />Instituto de Biotecnología, Centro de Investigaciones en Ciencias Veterinarias y Agronómicas (CICVyA), Instituto Nacional de Tecnología Agropecuaria (INTA), Nicolás Repetto y Los Reseros s/n (1686), Hurlingham, Buenos Aires Argentina
- />Currently at System Regulation Group, Metabolic Networks Department, Max Planck Institute of Molecular Plant Physiology, Am Mühlemberg 1, D-14476 Potsdam-Golm, Germany
| | - Daniel Alvarez
- />Estación Experimental Agropecuaria Manfredi, Ruta Nac. nro. 9 km 636 (5988), Manfredi, Córdoba (INTA) Argentina
| | - Ruth A Heinz
- />Instituto de Biotecnología, Centro de Investigaciones en Ciencias Veterinarias y Agronómicas (CICVyA), Instituto Nacional de Tecnología Agropecuaria (INTA), Nicolás Repetto y Los Reseros s/n (1686), Hurlingham, Buenos Aires Argentina
- />Consejo Nacional de Investigaciones Científicas y Técnicas–CONICET, Saavedra 15, C1083ACA Ciudad Autónoma de Buenos Aires, Argentina
- />Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pabellón 2, Ciudad Universitaria (1428), Buenos Aires, Argentina
| | - Horacio E Hopp
- />Instituto de Biotecnología, Centro de Investigaciones en Ciencias Veterinarias y Agronómicas (CICVyA), Instituto Nacional de Tecnología Agropecuaria (INTA), Nicolás Repetto y Los Reseros s/n (1686), Hurlingham, Buenos Aires Argentina
- />Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pabellón 2, Ciudad Universitaria (1428), Buenos Aires, Argentina
| | - Norma B Paniego
- />Instituto de Biotecnología, Centro de Investigaciones en Ciencias Veterinarias y Agronómicas (CICVyA), Instituto Nacional de Tecnología Agropecuaria (INTA), Nicolás Repetto y Los Reseros s/n (1686), Hurlingham, Buenos Aires Argentina
- />Consejo Nacional de Investigaciones Científicas y Técnicas–CONICET, Saavedra 15, C1083ACA Ciudad Autónoma de Buenos Aires, Argentina
| | - Veronica V Lia
- />Instituto de Biotecnología, Centro de Investigaciones en Ciencias Veterinarias y Agronómicas (CICVyA), Instituto Nacional de Tecnología Agropecuaria (INTA), Nicolás Repetto y Los Reseros s/n (1686), Hurlingham, Buenos Aires Argentina
- />Consejo Nacional de Investigaciones Científicas y Técnicas–CONICET, Saavedra 15, C1083ACA Ciudad Autónoma de Buenos Aires, Argentina
- />Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pabellón 2, Ciudad Universitaria (1428), Buenos Aires, Argentina
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16
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Viana JMS, Valente MSF, Fonseca E Silva F, Mundim GB, Paes GP. Efficacy of population structure analysis with breeding populations and inbred lines. Genetica 2013; 141:389-99. [PMID: 24057807 DOI: 10.1007/s10709-013-9738-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2013] [Accepted: 09/05/2013] [Indexed: 10/26/2022]
Abstract
The objective was to assess by simulation the efficacy of population structure analysis in plant breeding. Twelve populations and 300 inbred lines were simulated and genotyped using 100 microsatellite loci. The experimental material included populations with and without admixture, ancestry relationship and linkage disequilibrium, and with distinct levels of genetic differentiation and effective sizes. The analyses were performed using Structure software and employed all available models. For all the group number (K) tested, for both populations and inbred lines, the admixture model with correlated allelic frequencies provided the highest value for the logarithm of the marginal likelihood. Fitting appropriate model and using adequate sample size for individuals and markers, Structure was effective in identifying the correct population structure, migrants and individuals with genome from distinct populations. The linkage model did not result in an improvement in clustering relative to the admixture model with correlated allelic frequencies. The inclusion of prior information did not change the results; for some K values the analyses showed slight higher values of the marginal likelihood. The reduction in the number of individuals and markers negatively affected the results. There was a high variation in the most probable K value between the evaluated methods.
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17
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Emanuelli F, Lorenzi S, Grzeskowiak L, Catalano V, Stefanini M, Troggio M, Myles S, Martinez-Zapater JM, Zyprian E, Moreira FM, Grando MS. Genetic diversity and population structure assessed by SSR and SNP markers in a large germplasm collection of grape. BMC PLANT BIOLOGY 2013; 13:39. [PMID: 23497049 PMCID: PMC3610244 DOI: 10.1186/1471-2229-13-39] [Citation(s) in RCA: 150] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2012] [Accepted: 02/27/2013] [Indexed: 05/18/2023]
Abstract
BACKGROUND The economic importance of grapevine has driven significant efforts in genomics to accelerate the exploitation of Vitis resources for development of new cultivars. However, although a large number of clonally propagated accessions are maintained in grape germplasm collections worldwide, their use for crop improvement is limited by the scarcity of information on genetic diversity, population structure and proper phenotypic assessment. The identification of representative and manageable subset of accessions would facilitate access to the diversity available in large collections. A genome-wide germplasm characterization using molecular markers can offer reliable tools for adjusting the quality and representativeness of such core samples. RESULTS We investigated patterns of molecular diversity at 22 common microsatellite loci and 384 single nucleotide polymorphisms (SNPs) in 2273 accessions of domesticated grapevine V. vinifera ssp. sativa, its wild relative V. vinifera ssp. sylvestris, interspecific hybrid cultivars and rootstocks. Despite the large number of putative duplicates and extensive clonal relationships among the accessions, we observed high level of genetic variation. In the total germplasm collection the average genetic diversity, as quantified by the expected heterozygosity, was higher for SSR loci (0.81) than for SNPs (0.34). The analysis of the genetic structure in the grape germplasm collection revealed several levels of stratification. The primary division was between accessions of V. vinifera and non-vinifera, followed by the distinction between wild and domesticated grapevine. Intra-specific subgroups were detected within cultivated grapevine representing different eco-geographic groups. The comparison of a phenological core collection and genetic core collections showed that the latter retained more genetic diversity, while maintaining a similar phenotypic variability. CONCLUSIONS The comprehensive molecular characterization of our grape germplasm collection contributes to the knowledge about levels and distribution of genetic diversity in the existing resources of Vitis and provides insights into genetic subdivision within the European germplasm. Genotypic and phenotypic information compared in this study may efficiently guide further exploration of this diversity for facilitating its practical use.
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Affiliation(s)
- Francesco Emanuelli
- Department of Genomics and Biology of Fruit Crops, IASMA Research and Innovation Centre, Fondazione Edmund Mach - Via E. Mach 1, San Michele all'Adige, TN, 38010, Italy
| | - Silvia Lorenzi
- Department of Genomics and Biology of Fruit Crops, IASMA Research and Innovation Centre, Fondazione Edmund Mach - Via E. Mach 1, San Michele all'Adige, TN, 38010, Italy
| | - Lukasz Grzeskowiak
- Department of Genomics and Biology of Fruit Crops, IASMA Research and Innovation Centre, Fondazione Edmund Mach - Via E. Mach 1, San Michele all'Adige, TN, 38010, Italy
| | - Valentina Catalano
- Department of Genomics and Biology of Fruit Crops, IASMA Research and Innovation Centre, Fondazione Edmund Mach - Via E. Mach 1, San Michele all'Adige, TN, 38010, Italy
| | - Marco Stefanini
- Department of Genomics and Biology of Fruit Crops, IASMA Research and Innovation Centre, Fondazione Edmund Mach - Via E. Mach 1, San Michele all'Adige, TN, 38010, Italy
| | - Michela Troggio
- Department of Genomics and Biology of Fruit Crops, IASMA Research and Innovation Centre, Fondazione Edmund Mach - Via E. Mach 1, San Michele all'Adige, TN, 38010, Italy
| | - Sean Myles
- Department of Plant and Animal Sciences, Faculty of Agriculture, Dalhousie University, Truro, Nova Scotia, B2N 5E3, Canada
| | - José M Martinez-Zapater
- Instituto de Ciencias de la Vid y del Vino (CSIC, UR, Gobierno de La Rioja), C/ Madre de dios 51, Logroño, 26006, Spain
| | - Eva Zyprian
- JKI Institute for Grapevine Breeding Geilweilerhof, Siebeldingen, 76833, Germany
| | - Flavia M Moreira
- Department of Genomics and Biology of Fruit Crops, IASMA Research and Innovation Centre, Fondazione Edmund Mach - Via E. Mach 1, San Michele all'Adige, TN, 38010, Italy
- Instituto Federal de Santa Catarina, Rua José Lino Kretzer 608 - Praia Comprida, São José, Santa Catarina, 88130-310, Brasil
| | - M Stella Grando
- Department of Genomics and Biology of Fruit Crops, IASMA Research and Innovation Centre, Fondazione Edmund Mach - Via E. Mach 1, San Michele all'Adige, TN, 38010, Italy
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Genetic structure in cultivated quinoa (Chenopodium quinoa Willd.), a reflection of landscape structure in Northwest Argentina. CONSERV GENET 2012. [DOI: 10.1007/s10592-012-0350-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Mezmouk S, Dubreuil P, Bosio M, Décousset L, Charcosset A, Praud S, Mangin B. Effect of population structure corrections on the results of association mapping tests in complex maize diversity panels. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2011; 122:1149-60. [PMID: 21221527 PMCID: PMC3057001 DOI: 10.1007/s00122-010-1519-y] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2010] [Accepted: 12/11/2010] [Indexed: 05/20/2023]
Abstract
Association mapping of sequence polymorphisms underlying the phenotypic variability of quantitative agronomical traits is now a widely used method in plant genetics. However, due to the common presence of a complex genetic structure within the plant diversity panels, spurious associations are expected to be highly frequent. Several methods have thus been suggested to control for panel structure. They mainly rely on ad hoc criteria for selecting the number of ancestral groups; which is often not evident for the complex panels that are commonly used in maize. It was thus necessary to evaluate the effect of the selected structure models on the association mapping results. A real maize data set (342 maize inbred lines and 12,000 SNPs) was used for this study. The panel structure was estimated using both Bayesian and dimensional reduction methods, considering an increasing number of ancestral groups. Effect on association tests depends in particular on the number of ancestral groups and on the trait analyzed. The results also show that using a high number of ancestral groups leads to an over-corrected model in which all causal loci vanish. Finally the results of all models tested were combined in a meta-analysis approach. In this way, robust associations were highlighted for each analyzed trait.
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Affiliation(s)
- Sofiane Mezmouk
- BIOGEMMA, Genetics and Genomics in Cereals, rue des Frères Lumière, 63028 Clermont-Ferrand Cedex 2, France
- BIA Unit, INRA, Chemin de Borde-Rouge, BP 52627, 31326 Castanet-Tolosan Cedex, France
| | - Pierre Dubreuil
- BIOGEMMA, Genetics and Genomics in Cereals, rue des Frères Lumière, 63028 Clermont-Ferrand Cedex 2, France
| | - Mickaël Bosio
- BIOGEMMA, Genetics and Genomics in Cereals, rue des Frères Lumière, 63028 Clermont-Ferrand Cedex 2, France
| | - Laurent Décousset
- BIOGEMMA, Genetics and Genomics in Cereals, rue des Frères Lumière, 63028 Clermont-Ferrand Cedex 2, France
| | - Alain Charcosset
- INRA, UMR de Génétique Végétale, Ferme du Moulon, 91190 Gif-sur-Yvette, France
| | - Sébastien Praud
- BIOGEMMA, Genetics and Genomics in Cereals, rue des Frères Lumière, 63028 Clermont-Ferrand Cedex 2, France
| | - Brigitte Mangin
- BIA Unit, INRA, Chemin de Borde-Rouge, BP 52627, 31326 Castanet-Tolosan Cedex, France
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