AOX1-Subfamily Gene Members in Olea europaea cv. "Galega Vulgar"-Gene Characterization and Expression of Transcripts during IBA-Induced in Vitro Adventitious Rooting

International Journal of Molecular Sciences
Isabel VeladaHélia G Cardoso

Abstract

Propagation of some Olea europaea L. cultivars is strongly limited due to recalcitrant behavior in adventitious root formation by semi-hardwood cuttings. One example is the cultivar "Galega vulgar". The formation of adventitious roots is considered a morphological response to stress. Alternative oxidase (AOX) is the terminal oxidase of the alternative pathway of the plant mitochondrial electron transport chain. This enzyme is well known to be induced in response to several biotic and abiotic stress situations. This work aimed to characterize the alternative oxidase 1 (AOX1)-subfamily in olive and to analyze the expression of transcripts during the indole-3-butyric acid (IBA)-induced in vitro adventitious rooting (AR) process. OeAOX1a (acc. no. MF410318) and OeAOX1d (acc. no. MF410319) were identified, as well as different transcript variants for both genes which resulted from alternative polyadenylation events. A correlation between transcript accumulation of both OeAOX1a and OeAOX1d transcripts and the three distinct phases (induction, initiation, and expression) of the AR process in olive was observed. Olive AOX1 genes seem to be associated with the induction and development of adventitious roots in IBA-treated explants. A be...Continue Reading

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Citations

Dec 6, 2018·International Journal of Molecular Sciences·Nicolas L Taylor
Jul 3, 2021·Frontiers in Immunology·Birgit Arnholdt-SchmittJosé Hélio Costa

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Methods Mentioned

BETA
PCR
Blast2Seq
electrophoresis

Software Mentioned

TargetP
PlantCARE
SPSS
Fig Tree
modeler
Splign
MEGA
SPSS Statistics
Blast2Seq
Biosystems 7500

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