• Log In
  • New issue alert
  • Submit a manuscript
  • Register
  • Home
  • About
  • Editorial Board
  • Search
  • Archives
  • Current
  • Forthcoming

Share

Article Panel


Vol 41 (2019)
»Table of Contents
Reading Tools
  • About the author
  • How to cite this article
  • Indexing metadata
  • Print version
  • Look up terms
  • Finding References
  • Review policy

Related items
  • Author's work


Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial-No Derivatives 4.0 International.
Cloning and molecular characterization of a putative habanero pepper SERK1 cDNA expressed during somatic and zygotic embryogenesis | Jiménez-Guillen | Electronic Journal of Biotechnology
doi:10.1016/j.ejbt.2019.07.006
Electronic Journal of Biotechnology, Vol 41 (2019)

Cloning and molecular characterization of a putative habanero pepper SERK1 cDNA expressed during somatic and zygotic embryogenesis

Doribet Jiménez-Guillen, Daniel Pérez-Pascual, Ramón Souza-Perera, José Juan Zúñiga Aguilar



Abstract

Background: Plant gene homologs that control cell differentiation can be used as biotechnological tools to study the in vitro cell proliferation competence of tissue culture-recalcitrant species such as peppers. It has been demonstrated that SERK1 homologs enhance embryogenic competence when overexpressed in transformed tissues; therefore, cloning of a pepper SERK1 homolog was performed to further evaluate its biotechnological potential.

Results: A Capsicum chinense SERK full-length cDNA (CchSERK1) was cloned and characterized at the molecular level. Its deduced amino acid sequence exhibits high identity with sequences annotated as SERK1 and predicted-SERK2 homologs in the genomes of the Capsicum annuum CM-334 and Zunla-1 varieties, respectively, and with SERK1 homologs from members of the Solanaceae family. Transcription of CchSERK1 in plant tissues, measured by quantitative RT-PCR, was higher in stems, flowers, and roots but lower in leaves and floral primordia. During seed development, CchSERK1 was transcribed in all zygotic stages, with higher expression at 14 days post anthesis. During somatic embryogenesis, CchSERK1 was transcribed at all differentiation stages, with a high increment in the heart stage and lower levels at the torpedo/cotyledonal stages.

Conclusion: DNA sequence alignments and gene expression patterns suggest that CchSERK1 is the C. chinense SERK1 homolog. Significant levels of CchSERK1 transcripts were found in tissues with cell differentiation activities such as vascular axes and during the development of zygotic and somatic embryos. These results suggest that CchSERK1 might have regulatory functions in cell differentiation and could be used as a biotechnological tool to study the recalcitrance of peppers to proliferate in vitro.




Full Text: | Reprint PDF | HTML

ISSN:  0717-3458

Contact: edbiotec@pucv.cl

Pontificia Universidad Católica de Valparaíso
Av. Brasil 2950, Valparaíso, Chile
Copyright © 1997- 2023 by Electronic Journal of Biotechnology