Characteristics of Acacia mangium shoot apical meristems in natural and in vitro conditions in relation to heteroblasty

Clémence Hatt 1 François Mankessi 2 Jean-Baptiste Durand 3, 4, 5 Frédéric Boudon 3, 5 Fabienne Montes 1 Marc Lartaud 1 Jean-Luc Verdeil 1 Olivier Monteeuis 3, *
* Corresponding author
1 Plateau d'Histocytologie et Imagerie Cellulaire Végétale-MRI
UMR AGAP - Amélioration génétique et adaptation des plantes méditerranéennes et tropicales
4 MISTIS - Modelling and Inference of Complex and Structured Stochastic Systems
Inria Grenoble - Rhône-Alpes, LJK - Laboratoire Jean Kuntzmann, INPG - Institut National Polytechnique de Grenoble
5 VIRTUAL PLANTS - Modeling plant morphogenesis at different scales, from genes to phenotype
CRISAM - Inria Sophia Antipolis - Méditerranée , INRA - Institut National de la Recherche Agronomique, UMR AGAP - Amélioration génétique et adaptation des plantes méditerranéennes et tropicales
Abstract : Morphological and histocytological characteristics of Acacia mangium shoot apical meristems (SAMs) were assessed in natural and in vitro conditions in relation to heteroblasty. In the natural environment, SAMs with a mature-phyllode morphology were much bigger, contained more cells with larger vacuolated area, or vacuome, and lower nucleoplasmic ratios than those from the juvenile type (Juv). In these latter, nuclei appeared more voluminous, evenly and lightly stained, with clearly distinguishable nucleolei and less abundant chromocenters. In vitro, where reversions from mature to juvenile morphological traits do occur unpredictably, heteroblasty was less obvious in the SAM characteristics examined. In vitro SAMs corresponding to the juvenile and mature types showed similarities with outdoor Juv SAMs, but could be distinguished from these latter by a much larger vacuome that might be induced by the culture conditions. These findings encourage pursuing the investigations at the chromatin and nucleolus level in SAM zones where heteroblasty-related differences have been detected.
Complete list of metadatas

Cited literature [57 references]  Display  Hide  Download


https://hal.inria.fr/hal-00699815
Contributor : Jean-Baptiste Durand <>
Submitted on : Monday, August 12, 2013 - 4:35:45 PM
Last modification on : Tuesday, April 16, 2019 - 1:32:15 AM
Long-term archiving on : Wednesday, November 13, 2013 - 2:30:13 AM

Files

Hattetal2011.pdf
Files produced by the author(s)

Identifiers

Collections

Citation

Clémence Hatt, François Mankessi, Jean-Baptiste Durand, Frédéric Boudon, Fabienne Montes, et al.. Characteristics of Acacia mangium shoot apical meristems in natural and in vitro conditions in relation to heteroblasty. Trees - Structure and Function, Springer Verlag, 2012, 26 (3), pp.1031-1044. ⟨http://www.springerlink.com/content/v36n1g4136403843/⟩. ⟨10.1007/s00468-012-0680-0⟩. ⟨hal-00699815⟩

Share

Metrics

Record views

1403

Files downloads

1381