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Sequence variation in the putative replication origins of the five genetically distinct basic Euoenothera plastid chromosomes (plastomes).

Authors
Type
Published Article
Journal
MGG Molecular & General Genetics
0026-8925
Publisher
Springer-Verlag
Publication Date
Volume
251
Issue
5
Pages
609–612
Identifiers
PMID: 8709968
Source
Medline

Abstract

Approximately 4,200 nucleotides of the 16S/23S rDNA spacer and the 5' region flanking the rrn operon of the plastid chromosomes representing the five basic, phylogenetically related Euoenothera plastomes were sequenced and compared. The sequences that harbor the putative replication origins are almost identical except for a 785-bp intercistronic segment between the genes for the 16S rRNA and trnI. Differences are mainly caused by insertions/deletions and duplications; the predicted potential for formation of quite extensive secondary structure differs among the plastomes. Unexpected intraplastome variation has also been noted. Furthermore, the sequence-based and published genetically deduced plastome pedigrees differ significantly.

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