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Journal of Experimental Botany, Vol. 52, No. 354, pp. 179-180, January 2001
© 2001 Oxford University Press

Gene Notes

Primary transcripts of ndhD of Liliaceae and Aloaceae require editing of the start and 20th codons

Matías López-Serrano, Eva M. Del Campo, Bartolomé Sabater and Mercedes Martín1

Departamento de Biología Vegetal (Fisiología Vegetal), Universidad de Alcalá, Alcalá de Henares, 28871-Madrid, Spain

Abstract

About 350 nucleotide sequences around the start codon of the plastid ndhD gene were determined in six species to investigate the requirement of C to U editing of the cryptic start codons. The comparison with other sequences in databanks showed that, in contrast to grasses and similarly to dicots, Liliaceae and Aloaceae require editing of the primary transcript to generate the AUG start codon. Primary transcripts of Liliaceae and Aloaceae also show a new editing site at the 59th nucleotide, which has not been described in other plants. In some cases, transcripts showed partial editing which suggests that the synthesis of the protein may be controlled at the level of transcript processing.

Key words: Aloaceae, editing, Liliaceae, ndh genes, plastid DNA.


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