Agritrop
Home

Conserved and novel mechanisms underlie oil palm (Elaeis guineensis Jacq.) fruit abscission: A model for studying fruit abscission in the palm family (Arecaceae). [W733]

Tranbarger Timothy John, Fooyontphanich Kim, Roongsattham Peerapat, Morcillo Fabienne, Serret Julien, Dussert Stéphane, Collin Myriam, Amblard Philippe, Tangphatsornruang Sithichoke, Jantasuriyarat Chatchawan, Verdeil Jean-Luc. 2018. Conserved and novel mechanisms underlie oil palm (Elaeis guineensis Jacq.) fruit abscission: A model for studying fruit abscission in the palm family (Arecaceae). [W733]. In : Proceedings Plant and Animal Genome XXVI Conference. PAG. San Diego : PAG, Résumé, 1 p. Plant and Animal Genomes Conference. 26, San Diego, États-Unis, 13 January 2018/17 January 2018.

Paper without proceedings
[img]
Preview
Published version - Anglais
Use under authorization by the author or CIRAD.
PAG 2017_Tranbarger abstract.pdf

Télécharger (178kB) | Preview
[img]
Preview
Published version - Anglais
Use under authorization by the author or CIRAD.
ID586600D.pdf

Télécharger (2MB) | Preview

Matériel d'accompagnement : 1 diaporama (32 vues)

Abstract : Recent research on the molecular and cellular mechanisms of fruit abscission of the tropical palm species Elaeis guineensis (African oil palm) and the function and original features of the fruit primary abscission zone (AZ1) will be presented. The AZ1 consists of approximately 10 cell layers in the boundary region between the pedicel (P) and mesocarp (M). During early fruit development, AZ1 cells are distinguishable from P and M cells by their smaller size and periclinal cell division orientation. AZ1 cell wall thickness increases earlier during development suggesting cell wall assembly occurs more rapidly in the AZ1 than adjacent P and M cells. AZ1 cells contain numerous intra-AZ1 layer plasmodesmata (PD), but very few inter-AZ1 layer PD, while nuclei are located adjacent to PD and are remarkably aligned within AZ1 layer cells, and remain aligned and intact after abscission. These cellular features allow a high capacity for intra-AZ1 layer signaling that may be important for AZ1 development and function for fruit abscission. A decrease in methylesterified homogalacturonan (the main pectin component of the middle lamella) and the expression of two AZ1 specific polygalacturonases are observed in AZ1 cell layers during abscission. A comprehensive transcriptome analysis of the AZ1, P and M tissues reveal specific AZ1 expression combined with overlapping expression patterns between the AZ1 and adjacent P and M tissues may be important for AZ1 functional specificity. These results provide a platform to study fruit abscission within the palm family to understand how this fundamental plant process has diversified during evolution. (Résumé d'auteur)

Classification Agris : F30 - Plant genetics and breeding
F60 - Plant physiology and biochemistry
U10 - Computer science, mathematics and statistics

Auteurs et affiliations

  • Tranbarger Timothy John, IRD (FRA)
  • Fooyontphanich Kim, IRD (FRA)
  • Roongsattham Peerapat, IRD (FRA)
  • Morcillo Fabienne, CIRAD-BIOS-UMR DIAPC (FRA)
  • Serret Julien, IRD (FRA)
  • Dussert Stéphane, IRD (FRA)
  • Collin Myriam, IRD (FRA)
  • Amblard Philippe, PalmElit (FRA)
  • Tangphatsornruang Sithichoke, BIOTEC [National Center for Genetic Engineering and Biotechnology] (THA)
  • Jantasuriyarat Chatchawan, Kasetsart University (THA)
  • Verdeil Jean-Luc, CIRAD-BIOS-UMR AGAP (FRA)

Source : Cirad-Agritrop (https://agritrop.cirad.fr/586600/)

View Item (staff only) View Item (staff only)

[ Page générée et mise en cache le 2021-01-14 ]