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Miscellaneous Article

Sequence analysis of the 5.8S ribosomal DNA and internal transcribed spacers (ITS1 and ITS2) from five species of the Oxalis tuberosa alliance

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Pages 361-364 | Published online: 11 Jul 2009
 

Abstract

The internal transcribed spacer region (ITS1 and ITS2) of the 18S-25S nuclear ribosomal DNA sequence and the intervening 5.8S region from five species of the genus Oxalis was amplified by polymerase chain reaction and subjected to direct DN A sequencing.

On the basis of cytogenetic studies some species of this genus were postulated to be related by the number of chromosomes. Sequence homologies in the ITS1, 5.8S and ITS2 among species are in good agreement with previous relationships established on the basis of chromosome numbers.

We also indemnified a highly conserved sequence of six bp in the ITS1, reported to be present in a wide range of flowering plants, but not in the Oxalidaceae family to which the genus Oxalis belongs to.

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