Data/hora: 10/06/2024 02:57:21

Provedor de dados: | 74
País: | Brazil
Título: | A recombination point is conserved in the mitochondrial genome of higher plant species and located downstream from the cox2 pseudogene in Solanum tuberosum L.
Autores: | Tada,Susely F.S.; Souza,Anete P.
Data: | 2006-01-01
Ano: | 2006
Palavras-chave: | Mitochondrial DNA; Rearrangement; Plants; Solanum tuberosum; Cox2.
Resumo: | The potato (Solanum tuberosum L.) mitochondrial cox3/sdh4/pseudo-cox2 gene cluster has previously been identified by heterologous hybridization using a Marchantia polymorpha sdh4 probe. In our present study we used Southern blotting using sdh4 and cox2 probes to show that the sdh4 and cox2 genes are clustered in the mitochondria of potato, soybean and pea. Northern blotting revealed cotranscription of sdh4 and cox2 in potato but not in cauliflower, indicating that these genes are not clustered in cauliflower. A putative recombination point was detected downstream of the cox2 pseudogene (pseudo-cox2) in potato mitochondrial DNA (mtDNA). This sequence corresponds to a 32 bp sequence which appears to be well-conserved and is adjacent to the terminals of some mitochondrial genes in Citrullus lanatus, Beta vulgaris and Arabidopsis thaliana and is probably involved in the genic rearrangements. It is possible the potato mtDNA pseudo-cox2 gene was generated by recombination during evolution in the same way as that of several other mitochondrial genes and remains as an inactive partial copy of the functional cox2 which was also detected in potato mtDNA.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572006000100017
Editor: | Sociedade Brasileira de Genética
Relação: | 10.1590/S1415-47572006000100017
Formato: | text/html
Fonte: | Genetics and Molecular Biology  v.29 n.1 2006
Fonte: | info:eu-repo/semantics/openAccess