title: In silico identification of alternative oxidase 2 (AOX2) in monocots: A new evolutionary scenario.
abstract: We identified AOX2 genes in monocot species from Lemnoideae (Spirodela polyrhiza, Lemna gibba and Landoltia punctata), Pothoideae (Anthurium andraeanum and Anthurium amnicola) and Monsteroideae (Epipremnum aureum) subfamilies within the Araceae, an early-diverging monocot family. These findings highlight the presence of AOX2 in the most ancient monocot ancestor and also that at least partial loss of this gene occurred during speciation events within several monocot orders. The presence of AOX2 in monocot species challenges (1) new understanding of the evolutionary history of the AOX gene family in angiosperms and (2) drives experimental and bioinformatics efforts to explore functional relevance of the two AOX gene family members for plant growth and development. Knowledge gain in this field will impact running strategies on AOX-derived functional marker candidate development for plant breeding.
authors.affiliation: Functional Genomics and Bioinformatics, Department of Biochemistry and Molecular Biology, Federal University of Ceara, 60451-970, Fortaleza, Ceara, Brazil. Electronic address: helio.costa@ufc.br.
authors.forename: José Hélio
authors.initials: JH
authors.lastname: Costa
authors.affiliation: Functional Genomics and Bioinformatics, Department of Biochemistry and Molecular Biology, Federal University of Ceara, 60451-970, Fortaleza, Ceara, Brazil.
authors.forename: Clesivan Pereira Dos
authors.initials: CP
authors.lastname: Santos
authors.affiliation: Functional Genomics and Bioinformatics, Department of Biochemistry and Molecular Biology, Federal University of Ceara, 60451-970, Fortaleza, Ceara, Brazil.
authors.forename: Beatriz
authors.initials: B
authors.lastname: de Sousa E Lima
authors.affiliation: Functional Genomics and Bioinformatics, Department of Biochemistry and Molecular Biology, Federal University of Ceara, 60451-970, Fortaleza, Ceara, Brazil.
authors.forename: Anthônio Nunes
authors.initials: AN
authors.lastname: Moreira Netto
authors.affiliation: Functional Genomics and Bioinformatics, Department of Biochemistry and Molecular Biology, Federal University of Ceara, 60451-970, Fortaleza, Ceara, Brazil.
authors.forename: Kátia Daniella da Cruz
authors.initials: KD
authors.lastname: Saraiva
authors.affiliation: Functional Genomics and Bioinformatics, Department of Biochemistry and Molecular Biology, Federal University of Ceara, 60451-970, Fortaleza, Ceara, Brazil; Functional Cell Reprogramming and Organism Plasticity (FunCrop), EU Marie Curie Chair, ICAAM, University of Évora, Apartado 94, 7002-554 Évora, Portugal.
authors.forename: Birgit
authors.initials: B
authors.lastname: Arnholdt-Schmitt
mesh_terms: D000595:Amino Acid Sequence; D029064:Araceae / Q000235:genetics* / Q000378:metabolism; D003198:Computer Simulation; D018076:DNA, Complementary / Q000235:genetics / Q000378:metabolism; D019143:Evolution, Molecular; D024101:Mitochondrial Proteins / Q000737:chemistry / Q000235:genetics* / Q000378:metabolism; D010088:Oxidoreductases / Q000737:chemistry / Q000235:genetics* / Q000378:metabolism; D010802:Phylogeny; D010940:Plant Proteins / Q000737:chemistry / Q000235:genetics* / Q000378:metabolism; D016415:Sequence Alignment; D000099188:Alternative Oxidase
chemical_list: D018076:DNA, Complementary; D024101:Mitochondrial Proteins; D010088:Oxidoreductases; D010940:Plant Proteins; D000099188:Alternative Oxidase
keywords: Alternative oxidase 2; Anthurium andraeanum; Araceae; Epipremnum aureum; Evolution; Spirodela polyrhiza