1. Changes in ethylene signaling and MADS box gene expression are associated with banana finger drop
- Author
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Olivier Hubert, Gilbert Piral, Franc-Christophe Baurens, Colette Galas, Didier Mbéguié-A-Mbéguié, Démarche intégrée pour l'obtention d'aliments de qualité (UMR Qualisud), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Université de La Réunion (UR)-Université de Montpellier (UM)-Avignon Université (AU)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Université Montpellier 2 - Sciences et Techniques (UM2)-Université Montpellier 1 (UM1), Qualité des fruits et légumes tropicaux (UMR Qualitrop), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA)-Université des Antilles et de la Guyane (UAG), Amélioration génétique et adaptation des plantes méditerranéennes et tropicales (UMR AGAP), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), and European Regional Development Fund (FEDER)
- Subjects
Ethylene ,[SDV]Life Sciences [q-bio] ,Plant Science ,Musa acuminata ,F30 - Génétique et amélioration des plantes ,Banana ,chemistry.chemical_compound ,Banane ,Gene Expression Regulation, Plant ,[SDV.IDA]Life Sciences [q-bio]/Food engineering ,Gene expression ,Physiologie après récolte ,Expression des gènes ,Cloning, Molecular ,Mûrissage ,MADS-box ,Drop (liquid) ,Gene Expression Regulation, Developmental ,food and beverages ,Ripening ,General Medicine ,Horticulture ,Signal Transduction ,Banana finger ,F60 - Physiologie et biochimie végétale ,MADS Domain Proteins ,Biology ,Genes, Plant ,Finger drop ,Botany ,Chute de fruit ,Genetics ,[SDV.BV]Life Sciences [q-bio]/Vegetal Biology ,[SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering ,Stade de développement végétal ,Musa ,Sequence Analysis, DNA ,Maturité ,Ethylenes ,biology.organism_classification ,chemistry ,Pedicel ,Fruit ,H50 - Troubles divers des plantes ,Peptides ,Éthylène ,Agronomy and Crop Science - Abstract
International audience; Banana finger drop was examined in ripening banana harvested at immature (iMG), early (eMG) and late mature green (IMG) stages, with contrasting ripening rates and ethylene sensitivities. Concomitantly, 11 ethylene signal transduction components (ESTC) and 6 MADS box gene expressions were comparatively studied in median (control zone, CZ) and pedicel rupture (drop zone DZ) areas in peel tissue. iMG fruit did not ripen or develop finger drop while eMG and IMG fruits displayed a similar finger drop pattern. Several ESTC and MADS box gene mRNAs were differentially induced in DZ and CZ and sequentially in eMG and lMG fruits. MaESR2, 3 and MaEIL1, MaMADS2 and MaMADS5 had a higher mRNA level in eMG and acted earlier, whereas MaERS1,MaCTR1, MaEIL3/AB266319, MaEIL4/AB266320 and MaEIL5/AB266321,MaMADS4 and to a lesser extent MaMADS2 and 5 acted later in IMG. In this fruit, MaERS1 and 3, MaCTR1, MaEIL3, 4 and MaEIL5/AB266321, and MaMADS4 were enhanced by finger drop, suggesting their specific involvement in this process. MaEIL1, MaMADS1 and 3, induced at comparable levels in DZ and CZ, are probably related to the overall fruit ripening process. These findings led us to consider that developmental cues are the predominant finger drop regulation factor.
- Published
- 2014
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