Somatic embryogenesis and transformation of the diploid Rosa chinensis cv Old Blush

  • Philippe Vergne
  • Marion Maene
  • Guillaume Gabant
  • Aurélie Chauvet
  • Thomas Debener
  • Mohammed Bendahmane
Original Paper

DOI: 10.1007/s11240-009-9621-z

Cite this article as:
Vergne, P., Maene, M., Gabant, G. et al. Plant Cell Tiss Organ Cult (2010) 100: 73. doi:10.1007/s11240-009-9621-z

Abstract

Somatic embryogenesis was induced from in vitro-derived leaf explants of Rosa chinensis cultivar (cv) Old Blush. Calli producing embryos with expanded cotyledons (RcOBType1 embryos) were obtained. Further refinements of the callus maintenance medium generated a more typical rose embryogenic callus (RcOBType2) displaying high levels of secondary embryogenesis and embryos with limited cotyledon expansion Agrobacteriumtumefaciens-mediated transformation assays using β-glucuronidase (GUS) reporter gene showed that both types of embryos were competent for transformation. Under selection conditions, transformed RcOBType1 explants produced non chimaeric transformed embryos, from which shoots could be adventitiously regenerated. In contrast to RcOBType1, transformed RcOBType2 embryos directly yielded transformed shoots when repeatedly cultured in selective regeneration conditions. Transformation efficiency ranged between three to nine percent and shoots suitable for rooting were obtained within 6–8 months. Transgenic plants were transferred into the greenhouse and molecularly confirmed. The availability of transformation methods in a diploid rose, R. chinensis cv. Old Blush, will be useful for gene functional studies.

Keywords

Rosa Diploid Somatic embryogenesis Agrobacterium Genetic transformation 

Abbreviations

2,4-D

2,4-Dichlorophenoxy acetic acid

BA

6-Benzyladenine

Fe-EDDHA

Ethylenediamine di-2-hydroxyphenyl acetate ferric

GA3

Gibberellic acid A3

GUS

β-Glucuronidase

IAA

Indole-3-acetic acid

IBA

Indole-3-butyric acid

MS

Murashige and Skoog medium

NAA

α-Naphthaleneacetic acid

Copyright information

© Springer Science+Business Media B.V. 2009

Authors and Affiliations

  • Philippe Vergne
    • 1
  • Marion Maene
    • 1
  • Guillaume Gabant
    • 1
    • 3
  • Aurélie Chauvet
    • 1
  • Thomas Debener
    • 2
  • Mohammed Bendahmane
    • 1
    • 4
  1. 1.Reproduction et Développement des PlantesUMR INRA-CNRS-Université Lyon 1-ENSLLyon cedex 07France
  2. 2.Institute for Plant GeneticsLeibniz University HannoverHannoverGermany
  3. 3.CNRS, Centre de Biophysique MoléculaireOrléansFrance
  4. 4.RDP, UMR5667, Ecole Normale SupérieureLyon cedex 07France