Análisis del proceso de recombinación homóloga y de las consecuencias citogénicas derivadas de la poliploidía en la meiosis de una especie modelo (Arabidopsis Thaliana) y de una especie de interés agronómico (Triticum Aestivum)
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2024
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26/04/2024
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Universidad Complutense de Madrid
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La meiosis es un proceso de división celular que ocurre en los organismos eucariotas con reproducción sexual para la formación de los gametos. Consiste en dos divisiones celulares sucesivas, llamadas primera y segunda división meiótica, tras las cuales se producen cuatro células hijas haploides, cada una con la mitad de los cromosomas de la célula madre. Además de ser esencial para la formación de los gametos, contribuye a la generación de variabilidad genética en la descendencia gracias a la formación de nuevas combinaciones alélicas, las cuales son fruto de la recombinación homóloga y la segregación aleatoria de los cromosomas homólogos a polos diferentes. A lo largo de esta tesis se abordan diferentes aspectos relacionados con la meiosis vegetal, tanto en la especie modelo Arabidopsis thaliana como en el cereal de interés agronómico Triticum aestivum o trigo panadero...
Meiosis is a cell division process that occurs in eukaryotic organisms with sexual reproduction for the formation of gametes. It consists of two successive cell divisions, called the first and second meiotic divisions, after which four haploid daughter cells are produced, each with half of the chromosomes of the mother cell. In addition to being essential for the formation of gametes, it contributes to the generation of genetic variability in the offspring thanks to the formation of new allelic combinations, which are the result of homologous recombination and the random segregation of homologous chromosomes to different poles. Throughout this thesis, different aspects related to plant meiosis are addressed, both in the model species Arabidopsis thaliana and in the cereal of agricultural interest Triticum aestivum or bread wheat...
Meiosis is a cell division process that occurs in eukaryotic organisms with sexual reproduction for the formation of gametes. It consists of two successive cell divisions, called the first and second meiotic divisions, after which four haploid daughter cells are produced, each with half of the chromosomes of the mother cell. In addition to being essential for the formation of gametes, it contributes to the generation of genetic variability in the offspring thanks to the formation of new allelic combinations, which are the result of homologous recombination and the random segregation of homologous chromosomes to different poles. Throughout this thesis, different aspects related to plant meiosis are addressed, both in the model species Arabidopsis thaliana and in the cereal of agricultural interest Triticum aestivum or bread wheat...
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Tesis inédita de la Universidad Complutense de Madrid, Facultad de Ciencias Biológicas, leída el 26-04-2024