Shaping the shoot: the relative contribution of cell number and cell shape to variations in internode length between parent and hybrid apple trees
Genetic control of plant size and shape is a promising perspective, particularly in fruit trees, in order to select desirable genotypes. A recent study on architectural traits in an apple progeny showed that internode length was a highly heritable character. However, few studies have been devoted to internode cellular patterning in dicotyledonous stems, and the interplay between the two elementary cell processes that contribute to their length, i.e. cell division and elongation, is not fully understood. The present study aimed at unravelling their contributions in the genetic variation of internode length in a selection of F1 and parent genotypes of apple tree, by exploring the number of cells and cell shape within mature internodes belonging to the main axes. The results highlighted that both the variables were homogeneous in samples collected either along a sagital line or along the pith width, and suggest that cell lengthening was homogeneous during internode development. They allowed the total number of cells to be estimated on the internode scale and opened up new perspectives for simplifying tissue sampling procedures for further investigations. Differences in internode length were observed between the genotypes, in particular between the parents, and partly resulted from a compensation between cell number and cell length. However, genetic variations in internode length primarily involved the number of cells, while cell length was more secondary. These results argue for an interplay between cellular and organismal control of internode shape that may involve the rib meristem.
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Subjects: | F62 - Physiologie végétale - Croissance et développement, F30 - Génétique et amélioration des plantes, croissance, variation génétique, Malus, cellule, morphogénèse, entre noeud, http://aims.fao.org/aos/agrovoc/c_3394, http://aims.fao.org/aos/agrovoc/c_15975, http://aims.fao.org/aos/agrovoc/c_4553, http://aims.fao.org/aos/agrovoc/c_1418, http://aims.fao.org/aos/agrovoc/c_4943, http://aims.fao.org/aos/agrovoc/c_3920, |
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dig-cirad-fr-5466282024-01-28T16:25:52Z http://agritrop.cirad.fr/546628/ http://agritrop.cirad.fr/546628/ Shaping the shoot: the relative contribution of cell number and cell shape to variations in internode length between parent and hybrid apple trees. Ripetti Véronique, Escoute Jacques, Verdeil Jean-Luc, Costes Evelyne. 2008. Journal of Experimental Botany, 59 (6) : 1399-1407.https://doi.org/10.1093/jxb/ern049 <https://doi.org/10.1093/jxb/ern049> Shaping the shoot: the relative contribution of cell number and cell shape to variations in internode length between parent and hybrid apple trees Ripetti, Véronique Escoute, Jacques Verdeil, Jean-Luc Costes, Evelyne eng 2008 Journal of Experimental Botany F62 - Physiologie végétale - Croissance et développement F30 - Génétique et amélioration des plantes croissance variation génétique Malus cellule morphogénèse entre noeud http://aims.fao.org/aos/agrovoc/c_3394 http://aims.fao.org/aos/agrovoc/c_15975 http://aims.fao.org/aos/agrovoc/c_4553 http://aims.fao.org/aos/agrovoc/c_1418 http://aims.fao.org/aos/agrovoc/c_4943 http://aims.fao.org/aos/agrovoc/c_3920 Genetic control of plant size and shape is a promising perspective, particularly in fruit trees, in order to select desirable genotypes. A recent study on architectural traits in an apple progeny showed that internode length was a highly heritable character. However, few studies have been devoted to internode cellular patterning in dicotyledonous stems, and the interplay between the two elementary cell processes that contribute to their length, i.e. cell division and elongation, is not fully understood. The present study aimed at unravelling their contributions in the genetic variation of internode length in a selection of F1 and parent genotypes of apple tree, by exploring the number of cells and cell shape within mature internodes belonging to the main axes. The results highlighted that both the variables were homogeneous in samples collected either along a sagital line or along the pith width, and suggest that cell lengthening was homogeneous during internode development. They allowed the total number of cells to be estimated on the internode scale and opened up new perspectives for simplifying tissue sampling procedures for further investigations. Differences in internode length were observed between the genotypes, in particular between the parents, and partly resulted from a compensation between cell number and cell length. However, genetic variations in internode length primarily involved the number of cells, while cell length was more secondary. These results argue for an interplay between cellular and organismal control of internode shape that may involve the rib meristem. article info:eu-repo/semantics/article Journal Article info:eu-repo/semantics/publishedVersion http://agritrop.cirad.fr/546628/1/document_546628.pdf application/pdf Cirad license info:eu-repo/semantics/restrictedAccess https://agritrop.cirad.fr/mention_legale.html https://doi.org/10.1093/jxb/ern049 10.1093/jxb/ern049 info:eu-repo/semantics/altIdentifier/doi/10.1093/jxb/ern049 info:eu-repo/semantics/altIdentifier/purl/https://doi.org/10.1093/jxb/ern049 |
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F62 - Physiologie végétale - Croissance et développement F30 - Génétique et amélioration des plantes croissance variation génétique Malus cellule morphogénèse entre noeud http://aims.fao.org/aos/agrovoc/c_3394 http://aims.fao.org/aos/agrovoc/c_15975 http://aims.fao.org/aos/agrovoc/c_4553 http://aims.fao.org/aos/agrovoc/c_1418 http://aims.fao.org/aos/agrovoc/c_4943 http://aims.fao.org/aos/agrovoc/c_3920 F62 - Physiologie végétale - Croissance et développement F30 - Génétique et amélioration des plantes croissance variation génétique Malus cellule morphogénèse entre noeud http://aims.fao.org/aos/agrovoc/c_3394 http://aims.fao.org/aos/agrovoc/c_15975 http://aims.fao.org/aos/agrovoc/c_4553 http://aims.fao.org/aos/agrovoc/c_1418 http://aims.fao.org/aos/agrovoc/c_4943 http://aims.fao.org/aos/agrovoc/c_3920 |
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F62 - Physiologie végétale - Croissance et développement F30 - Génétique et amélioration des plantes croissance variation génétique Malus cellule morphogénèse entre noeud http://aims.fao.org/aos/agrovoc/c_3394 http://aims.fao.org/aos/agrovoc/c_15975 http://aims.fao.org/aos/agrovoc/c_4553 http://aims.fao.org/aos/agrovoc/c_1418 http://aims.fao.org/aos/agrovoc/c_4943 http://aims.fao.org/aos/agrovoc/c_3920 F62 - Physiologie végétale - Croissance et développement F30 - Génétique et amélioration des plantes croissance variation génétique Malus cellule morphogénèse entre noeud http://aims.fao.org/aos/agrovoc/c_3394 http://aims.fao.org/aos/agrovoc/c_15975 http://aims.fao.org/aos/agrovoc/c_4553 http://aims.fao.org/aos/agrovoc/c_1418 http://aims.fao.org/aos/agrovoc/c_4943 http://aims.fao.org/aos/agrovoc/c_3920 Ripetti, Véronique Escoute, Jacques Verdeil, Jean-Luc Costes, Evelyne Shaping the shoot: the relative contribution of cell number and cell shape to variations in internode length between parent and hybrid apple trees |
description |
Genetic control of plant size and shape is a promising perspective, particularly in fruit trees, in order to select desirable genotypes. A recent study on architectural traits in an apple progeny showed that internode length was a highly heritable character. However, few studies have been devoted to internode cellular patterning in dicotyledonous stems, and the interplay between the two elementary cell processes that contribute to their length, i.e. cell division and elongation, is not fully understood. The present study aimed at unravelling their contributions in the genetic variation of internode length in a selection of F1 and parent genotypes of apple tree, by exploring the number of cells and cell shape within mature internodes belonging to the main axes. The results highlighted that both the variables were homogeneous in samples collected either along a sagital line or along the pith width, and suggest that cell lengthening was homogeneous during internode development. They allowed the total number of cells to be estimated on the internode scale and opened up new perspectives for simplifying tissue sampling procedures for further investigations. Differences in internode length were observed between the genotypes, in particular between the parents, and partly resulted from a compensation between cell number and cell length. However, genetic variations in internode length primarily involved the number of cells, while cell length was more secondary. These results argue for an interplay between cellular and organismal control of internode shape that may involve the rib meristem. |
format |
article |
topic_facet |
F62 - Physiologie végétale - Croissance et développement F30 - Génétique et amélioration des plantes croissance variation génétique Malus cellule morphogénèse entre noeud http://aims.fao.org/aos/agrovoc/c_3394 http://aims.fao.org/aos/agrovoc/c_15975 http://aims.fao.org/aos/agrovoc/c_4553 http://aims.fao.org/aos/agrovoc/c_1418 http://aims.fao.org/aos/agrovoc/c_4943 http://aims.fao.org/aos/agrovoc/c_3920 |
author |
Ripetti, Véronique Escoute, Jacques Verdeil, Jean-Luc Costes, Evelyne |
author_facet |
Ripetti, Véronique Escoute, Jacques Verdeil, Jean-Luc Costes, Evelyne |
author_sort |
Ripetti, Véronique |
title |
Shaping the shoot: the relative contribution of cell number and cell shape to variations in internode length between parent and hybrid apple trees |
title_short |
Shaping the shoot: the relative contribution of cell number and cell shape to variations in internode length between parent and hybrid apple trees |
title_full |
Shaping the shoot: the relative contribution of cell number and cell shape to variations in internode length between parent and hybrid apple trees |
title_fullStr |
Shaping the shoot: the relative contribution of cell number and cell shape to variations in internode length between parent and hybrid apple trees |
title_full_unstemmed |
Shaping the shoot: the relative contribution of cell number and cell shape to variations in internode length between parent and hybrid apple trees |
title_sort |
shaping the shoot: the relative contribution of cell number and cell shape to variations in internode length between parent and hybrid apple trees |
url |
http://agritrop.cirad.fr/546628/ http://agritrop.cirad.fr/546628/1/document_546628.pdf |
work_keys_str_mv |
AT ripettiveronique shapingtheshoottherelativecontributionofcellnumberandcellshapetovariationsininternodelengthbetweenparentandhybridappletrees AT escoutejacques shapingtheshoottherelativecontributionofcellnumberandcellshapetovariationsininternodelengthbetweenparentandhybridappletrees AT verdeiljeanluc shapingtheshoottherelativecontributionofcellnumberandcellshapetovariationsininternodelengthbetweenparentandhybridappletrees AT costesevelyne shapingtheshoottherelativecontributionofcellnumberandcellshapetovariationsininternodelengthbetweenparentandhybridappletrees |
_version_ |
1792497019096399872 |