Caruso, Immacolata (2010) Phenotypic, metabolic and genetic consequences of polyploidization in Solanum species. [Tesi di dottorato] (Unpublished)

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Item Type: Tesi di dottorato
Lingua: English
Title: Phenotypic, metabolic and genetic consequences of polyploidization in Solanum species
Creators:
CreatorsEmail
Caruso, Immacolataimmacolata.caruso@unina.it
Date: 30 November 2010
Number of Pages: 208
Institution: Università degli Studi di Napoli Federico II
Department: Scienze del suolo, della pianta, dell'ambiente e delle produzioni animali
Scuola di dottorato: Scienze agrarie e agroalimentari
Dottorato: Scienze delle risorse ambientali
Ciclo di dottorato: 23
Coordinatore del Corso di dottorato:
nomeemail
Rao, Maria Antoniettamariaantonietta.rao@unina.it
Tutor:
nomeemail
Carputo, Domenicocarputo@unina.it
Date: 30 November 2010
Number of Pages: 208
Uncontrolled Keywords: polyploidization, Solanum commersonii, Solanum bulbocastanum
Settori scientifico-disciplinari del MIUR: Area 07 - Scienze agrarie e veterinarie > AGR/07 - Genetica agraria
Date Deposited: 14 Dec 2010 13:56
Last Modified: 30 Apr 2014 19:45
URI: http://www.fedoa.unina.it/id/eprint/8296

Abstract

In the literature there is scant information on the effects imposed by polyploidization. Polyploids often show novel phenotypes that are not present in their diploid progenitors or exceed the range of the contributing species. Some of these traits could play a role in the increased heterosis or, more in general, could allow polyploids to enter new ecological niches. Shedding new light on the effect of polyploidization would be particularly important in that this would allow: 1) to perform evolutionistic considerations (Hegarty and Hiscock, 2008); 2) to study the plasticity of plant genomes (Leitch and Leitch, 2008); and 3) to interpret metabolomic and proteomic changes associated to polyploidy (Seoighe and Gehring, 2004). Moreover, since polyploidization is often used in plant breeding to produce genetic variability and to overcome sexual barriers, knowledge on the characteristics of newly generated polyploids is crucial for an efficient selection of plant materials (Carputo et al. 2003). The main aim of this thesis is to study the complex changes associated to autopolyploidization in potato. In particular, specific goals are to produce 4x genotypes from two 2x wild species, S. commersonii and S. bulbocastanum, and to explore phenotypic, genetic, epigenetic, and metabolomic alterations in synthetic tetraploids in comparison with diploid species.

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