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Titolo:
RIBOSOMAL EXTERNAL AND INTERNAL TRANSCRIBED SPACERS - COMBINED USE INTHE PHYLOGENETIC ANALYSIS OF MEDICAGO (LEGUMINOSAE)
Autore:
BENA G; JUBIER MF; OLIVIERI I; LEJEUNE B;
Indirizzi:
UNIV MONTPELLIER 2,INST SCI EVOLUT,PL EUGENE BATAILLON,CC065 F-34095 MONTPELLIER 05 FRANCE UNIV PARIS 11,INST BIOTECHNOL PLANTES F-91405 ORSAY FRANCE INRA,LAB RESSOURCES GENET & AMELIORAT LUZERNES MEDITER F-34130 MAUGUIO FRANCE
Titolo Testata:
Journal of molecular evolution
fascicolo: 3, volume: 46, anno: 1998,
pagine: 299 - 306
SICI:
0022-2844(1998)46:3<299:REAITS>2.0.ZU;2-V
Fonte:
ISI
Lingua:
ENG
Soggetto:
PISUM-SATIVUM; RNA GENES; DATA SETS; DNA; RDNA; EVOLUTION; REGION; ASTERACEAE; SEQUENCES; SYSTEMATICS;
Keywords:
PHYLOGENY; ETS; ITS; MEDICAGO;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
43
Recensione:
Indirizzi per estratti:
Citazione:
G. Bena et al., "RIBOSOMAL EXTERNAL AND INTERNAL TRANSCRIBED SPACERS - COMBINED USE INTHE PHYLOGENETIC ANALYSIS OF MEDICAGO (LEGUMINOSAE)", Journal of molecular evolution, 46(3), 1998, pp. 299-306

Abstract

We have estimated the potential phylogenetic utility of the ribosomalexternal transcribed spacer (ETS) from the nuclear ribosomal region. The ETS was sequenced from 13 annual Medicago (Fabaceae) species upstream a highly conserved motive which was found among many different organisms. In the genus Medicago, the ETS was found to evolve 1.5 times faster than the internal transcribed spacer and to be 1.5 times more informative. Reduced ribosomal maturation process constraints on ETS areproposed to explain the different evolutionary rates between the two spacers. Maximal phylogenetic resolution and support was obtained whenthe two spacers were analyzed together. No incongruence between the two spacers was found and ETS appears to be a valuable source of information for solidifying ITS plant phylogeny. The phylogeny obtained in Medicago suggests that none of the three subsections included in the study is monophyletic.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 01/10/20 alle ore 04:53:57