A non-shedding fruit Elaeis oleifera palm reveals perturbations to hormone signaling, ROS homeostasis, and hemicellulose metabolism

Morcillo Fabienne, Serret Julien, Beckers Antoine, Collin Myriam, Tisne Sébastien, George Simon, Poveda Roberto, Louise Claude, Tranbarger Timothy John. 2021. A non-shedding fruit Elaeis oleifera palm reveals perturbations to hormone signaling, ROS homeostasis, and hemicellulose metabolism. Genes, 12 (11), n.spéc. Genetic Basis and Physiology of Fruit Ripening and Abscission:1724, 18 p.

https://doi.org/10.3390/genes12111724

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Url - jeu de données - Entrepôt autre : https://www.ncbi.nlm.nih.gov/geo/query/acc.cgi?acc=GSE186050

Quartile : Q2, Sujet : GENETICS & HEREDITY

Résumé : The developmentally programmed loss of a plant organ is called abscission. This process is characterized by the ultimate separation of adjacent cells in the abscission zone (AZ). The discovery of an American oil palm (Elaeis oleifera) variant that does not shed its has allowed for the study of the mechanisms of ripe fruit abscission in this species. A comparative transcriptome analysis was performed to compare the fruit AZs of the non-shedding E. oleifera variant to an individual of the same progeny that sheds its ripe fruit normally. The study provides evidence for widespread perturbation to gene expression in the AZ of the non-shedding variant, compared to the normal fruit-shedding control, and offers insight into abscission-related functions. Beyond the genes with known or suspected roles during organ abscission or indehiscence that were identified, a list of genes with hormone-related functions, including ethylene, jasmonic acid, abscisic acid, cytokinin and salicylic acid, in addition to reactive oxygen species (ROS) metabolism, transcriptional responses and signaling pathways, was compiled. The results also allowed a comparison between the ripe fruit abscission processes of the African and American oil palm species at the molecular level and revealed commonalities with environmental stress pathways.

Mots-clés Agrovoc : abscission, hémicellulose, Elaeis oleifera, dérivé réactif de l'oxygène, homéostasie, transcriptome

Mots-clés libres : Transcriptome, Abscission, Ripening, Oil Palm, Reproductive development, Signal transduction, Hormone, Cell separation, Elaeis oleifera

Classification Agris : F60 - Physiologie et biochimie végétale
F30 - Génétique et amélioration des plantes

Champ stratégique Cirad : CTS 2 (2019-) - Transitions agroécologiques

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