Morcillo F. auteur aut IRD Serret Julien auteur aut IRD Beckers A. auteur aut IRD Collin Myriam auteur aut IRD Tisne S. auteur aut IRD George S. auteur aut IRD Poveda R. auteur aut IRD Louise C. auteur aut IRD Tranbarger Timothy auteur aut IRD text journalArticle eng text/pdf reformatted digital access 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. specialized transcriptome abscission ripening oil palm reproductive development signal transduction hormone cell separation Elaeis oleifera 076 020 12 11 1724 [18 ] 2021 https://www.documentation.ird.fr/hor/fdi:010083787 10.3390/genes12111724 [F B010083787] https://www.documentation.ird.fr/hor/fdi:010083787 https://horizon.documentation.ird.fr/exl-doc/pleins_textes/2022-01/010083787.pdf IRD - Base Horizon / Pleins textes 2022-01-12 2025-02-24 fdi:010083787 fre