Protein changes in the shoot-tips of vanilla (Vanilla planifolia) in response to osmoprotective treatments

  • María Teresa González-Arnao
  • Armando Guerrero-Rangel
  • Octavio Martínez
  • Silvia Valdés-Rodríguez
Original Article


Cryogenic storage of vanilla shoot-tips represents the safest biotechnological strategy for the long-term conservation of the vanilla germplasm, but successful cryopreservation depends on its tolerance to both dehydration stress imposed by cryoprotective treatments and thermal stress produced by immersion in liquid nitrogen. In this work, we evaluated the impact of various osmoprotective treatments on protein expression patterns in vanilla (Vanilla planifolia) shoot-tips subjected to successive dehydration steps prior to cryopreservation. Two-dimensional electrophoretic protein profiles of shoot-tips dissected from in vitro grown plants and preconditioned on semisolid media with 0.3 M sucrose for one day, and shoot-tips preconditioned, loaded with a solution of 0.4 M sucrose and 2 M glycerol, and subsequently exposed to plant vitrification solution 3 (50% (w/v) sucrose and 50% (w/v) glycerol), were compared with non-treated dissected shoot-tips. We observed an increase in the expression level of six protein spots (fold change exceeding 1.5) and a decrease (fold change not exceeding 0.6) of ten protein spots after preconditionig treatment, whereas the profiles after preconditioning, loading and exposure to vitrification solution showed an increase in the expression level of 21 protein spots and a decrease in the expression level of 13. Most proteins identified were down-regulated and belonged to groups of biosynthesis, folding, and protein degradation. Many others were related to energetic metabolism, defense, and cell structure. These preliminary results contribute to knowledge of the proteome of this species and partially clarify its sensitivity to osmotic dehydration treatments.


Dehydration stress Osmoprotection Protein profiles Proteomics Two-dimensional electrophoresis Vanilla 



Bidimensional electrophoresis




Ethylenediaminetetraacetic acid


Immobilized pH gradients


Isoelectric focusing


Liquid chromatography


Linear ion trap


Mass spectrometry in tandem


Plant vitrification solution 3


Quadrupole time-of-flight



The study was funded by the Mexican Secretariat of Public Education-National Council of Science and Technology, basic science (Grant 166332/CB2011). The authors thank Alicia Chagolla (Mass Spectrometry Service, Cinvestav).

Compliance with ethical standards

Conflict of interest

The authors have no conflicts of interest.

Supplementary material

13562_2018_442_MOESM1_ESM.docx (681 kb)
Supplementary material 1 (DOCX 680 kb)
13562_2018_442_MOESM2_ESM.xls (94 kb)
Supplementary material 2 (XLS 93 kb)
13562_2018_442_MOESM3_ESM.doc (80 kb)
Supplementary material 3 (DOC 80 kb)


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Copyright information

© Society for Plant Biochemistry and Biotechnology 2018

Authors and Affiliations

  • María Teresa González-Arnao
    • 1
  • Armando Guerrero-Rangel
    • 2
  • Octavio Martínez
    • 3
  • Silvia Valdés-Rodríguez
    • 2
  1. 1.Facultad de Ciencias QuímicasUniversidad VeracruzanaOrizabaMexico
  2. 2.Cinvestav-Unidad IrapuatoIrapuatoMexico
  3. 3.Laboratorio Nacional de Genómica para la Biodiversidad (Langebio)CinvestavIrapuatoMexico

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