Journal Article

The shoot apical meristem of oil palm (<i>Elaeis guineensis</i>; Arecaceae): developmental progression and dynamics

Stefan Jouannic, Marc Lartaud, Jonathan Hervé, Myriam Collin, Yves Orieux, Jean-Luc Verdeil and James W. Tregear

in Annals of Botany

Published on behalf of The Annals of Botany Company

Volume 108, issue 8, pages 1477-1487
Published in print December 2011 | ISSN: 0305-7364
Published online February 2011 | e-ISSN: 1095-8290 | DOI: http://dx.doi.org/10.1093/aob/mcr019
The shoot apical meristem of oil palm (Elaeis guineensis; Arecaceae): developmental progression and dynamics

More Like This

Show all results sharing these subjects:

  • Ecology and Conservation
  • Evolutionary Biology
  • Plant Sciences and Forestry

GO

Show Summary Details

Preview

Background and Aims

Oil palm, an unbranched perennial monocotyledon, possesses a single shoot apical meristem (SAM), which is responsible for the initiation of the entire above-ground structure of the plant. To compare the palm SAM structure with those of other monocots and to study variations in its structure throughout the life of the plant, its organization was characterized from the embryonic stage to that of the reproductive plant.

Methods

SAM structure was studied by a combination of stained histological sections, light and confocal microscopy, and serial section-based three-dimensional reconstructions.

Key Results

The oil palm SAM is characterized by two developmental phases: a juvenile phase with a single tunica-corpus structure displaying a gradual increase in size; and a mature phase characterized by a stable size, a modified shape and an established histological zonation pattern. In mature plants, fluctuations in SAM shape and volume occur, mainly as a consequence of changes in the central zone, possibly in relation to leaf initiation.

Conclusions

Development of the oil palm SAM is characterized by a juvenile to mature phase transition accompanied by establishment of a zonal pattern and modified shape. SAM zonation is dynamic during the plastochron period and displays distinct features compared with other monocots.

Keywords: Shoot apical meristem; oil palm; Elaeis guineensis; Arecaceae meristem; 3-D; development; evo-devo

Journal Article.  7298 words.  Illustrated.

Subjects: Ecology and Conservation ; Evolutionary Biology ; Plant Sciences and Forestry

Full text: subscription required

How to subscribe Recommend to my Librarian

Users without a subscription are not able to see the full content. Please, subscribe or login to access all content.