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Characterization and expression analysis of a banana gene encoding 1-aminocyclopropane-1-carboxylate oxidase

Characterization and expression analysis of a banana gene encoding 1-aminocyclopropane-1-carboxylate oxidase

Biochemistry and molecular biology international 41(5): 941-950

A cDNA encoding the banana 1-aminocyclopropane-1 carboxylate (ACC) oxidase has previously been isolated from a cDNA library that was constructed by extracting poly(A)+ RNA from peels of ripening banana. This cDNA, designated as pMAO2, has 1,199 bp and contains open reading frame of 318 amino acids. In order to identify ripening-related promoters of the an banana ACC oxidase gene, pMAO2 was used as a probe to screen a banana genomic library constructed in the lambdaEMBL3 vector. The banana ACC oxidase MAO2 gene has four exons and three introns, with all of the boundaries between these introns and exons sharing a consensus dinucleotide sequence of GT-AG. The expression of MAO2 gene in banana begins after the onset of ripening (stage 2) and continues into later stages of the ripening process. The accumulation of MAO2 mRNA can be induced by 1 microliter/l exogenous ethylene, and it reached steady state level when 100 microliter/l exogenous ethylene was present.

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Accession: 002775007

Download citation: RISBibTeXText

PMID: 9137825

DOI: 10.1080/15216549700202001

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