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Molecular Diversity in Selected Banana Clones (<i>Musa AAA</i>“Cavendish”) Adapted to the Subtropical Environment of Formosa Province (Argentina)

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American Journal of Plant Sciences 2018年第12期9卷 2504-2513页

作者： José luis Ermini Gerardo Carlos Tenaglia guillermo raúl pratta IICAR UNR CONICET (Instituto de Investigaciones en Ciencias Agrarias de Rosario Universidad Nacional de Rosario Consejo Nacional de Investigaciones Científicas y Técnicas) Facultad de Ciencias Agrarias Campo Experimental “J. F. Villarino” Zavalla Argentina Instituto de Investigación y Desarrollo Tecnológico para la Agricultura Familiar Región Nordeste Argentino Laguna Naineck Pro-vincia de Formosa (IPAF NEA) Argentina Cátedra de Genética Facultad de Ciencias Agrarias Universidad Nacional de Rosario Zavalla Provincia de Santa Fe Argentina

Banana production dates from the 1920s in Argentina. Rhizomes were introduced and dispersed by immigrants from bordering countries in the Northern provinces. There is scarce information on its genetic diversity to assist in crop breeding programs;hence studies of genetic structure between populations and individuals are fundamental for future use. Molecular markers assess the diversity of the crop. This study employed Amplified Fragment length Polymorphism to investigate the genetic variation in local banana plants from farmer’s fields. Forty-four rhizomes (selected from a total of 860 plants for being stable for production) were used as plant material and 6 primer combinations selected in a previous report were used. Polymorphic fragments present in a given genotype were assigned 1 and those absent were assigned 0. The matrix generated was analyzed by univariate and multivariate analysis. A total 540 bands were scored, of which 100% were polymorphic. The number of the pattern duplicated bands was 23 and twenty-one amplicons were exclusive to banana plants collected in the same farmer’s field. Hierarchical clustering and principal coordinates analyses showed differences between genotypes. The cophenetic correlation of the cluster was 0.63 while the 18% of the total molecular variation was explained by the two principal coordinates. These analyses evidence genetic diversity of the crop according to farmer’s field. In agreement to this observation, analysis of molecular variance revealed that 8.9% of the variation was found among farmer populations and 91.1% within farmer populations. In conclusion, introduction of banana into the subtropical zone was associated with a broader genetic variation in order to increase the genetic homeostasis necessary for adapting the crop to the suboptimal environment of Northeastern Argentinean Formosa Province.

关键词： Agronomy Biodiversity Autotriploidy Molecular Characterization Multivariate Analysis Plant Genetic Resources

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Biodiversity in a Tomato Germplasm for Free Amino Acid and Pigment Content of Ripening Fruits

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American Journal of Plant Sciences 2011年第2期2卷 255-261页

作者： guillermo raúl pratta Gustavo Rubén Rodríguez Roxana Zorzoli liliana Amelia Picardi Estela Marta Valle 不详

Free amino acid and pigment composition in fruits at two ripening stages from a selected tomato germplasm was stu-died. The aims were contributing to knowledge on variability of ripening metabolism and identifying more consis-tently the genetic background of the plant material under analysis. Significant differences (p ll amino acids and pigments except by asparagine, alanine and chlorophyll b contents. The highest relative amino acid content corresponded to glutamate, glutamine, and GABA though some genotypes had relatively high asparagine content. Glutamate, glutamine and GABA performed oppositely: the former increased along ripening while the latter two decreased in their relative content. A Principal Components (PC) analysis was applied, determining that metabolites having the greatest contribution to general variability were threonine, serine, glutamate, glutamine, glycine, isoleucine, leucine, tyrosine, phenylalanine, lycopene and beta- carotene, which showed the highest association with PC1. Alanine and chlorophylls a and b were highly associated to PC2. These two first PC explained the 62% of the total variation, and genotypes were distributed according to the ripening stage in their coordinates. Accordingly, a Hierarchical Clustering resulted in a dendrogram having a relatively high cophenetic correlation (0.70), in which two well defined groups were obtained according to ripening stage. These results verified the existence of variability in the metabolism of ripening fruit for amino acids and pigments, and allowed to identify unequivocally a set of selected tomato germplasm according to the fruit metabolic profiles in these two ripening stages.

关键词： Solanum Section lycopersicon Plant Breeding Plant Genetic Resources Multivariate Analysis

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Genetic Analysis of Tomato Fruit Ripening at Polypeptide Profiles level through Quantitative and Multivariate Approaches

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American Journal of Plant Sciences 2014年第13期5卷 1926-1935页

作者： Ezequiel Marchionni Basté Javier H. Pereira da Costa Gustavo R. Rodríguez Roxana Zorzoli guillermo R. pratta Genetics Cathedra Faculty of Agronomy Sciences National University of Rosario Experimental Field “José F. Villarino” Zavalla Argentina Council of Researchs of the National University of Rosario (CIUNR) Zavalla Argentina National Council of Scientific and Technical Researchs (CONICET) Zavalla Argentina. Genetics Cathedra Faculty of Agronomy Sciences National University of Rosario Experimental Field “José F. Villarino” Zavalla Argentina

Multivariate analysis became essential in functional and structural Genomics because of the large quantity of biological data provided by these new research areas. Diallel mating design was widely applied to analyze the heritability of quantitative traits but it was recently used for approaching to the inheritance patterns of other levels of gene expression such as transcript profiles. Investigating the inheritance pattern of total polypeptide profiles with a diallel design remains as a vacancy subject. The objective of the present research was to infer the inheritance of total polypeptides profiles from tomato pericarp tissue at four different ripening stages in a diallel mating design including five recombinant inbred lines (RIls) and their ten second cycle hybrids (SCH). To achieve this objective, a multivariate analysis was applied to identify eventual inheritance patterns through a data mining approach and then univariate analyses were used to verify these patterns. Mainly dominance and also overdominance, though in a minor percentage, contributed to the gene actions involved in their genetic basis. Multivariate analysis was efficient in identifying inheritance patterns of total polypeptide profiles through a data mining approach, and univariate analyses largely verified the identified gene actions.

关键词： Solanum lycopersicum Plant Genetic Resources Proteomics Cluster Analysis

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