Growth enhancement of transgenic poplar plants by overexpression of Arabidopsis thaliana endo-1,4-β-glucanase (cel1)

Ziv Shani, Mara Dekel, Galit Tsabary, Raphael Goren, Oded Shoseyov*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

64 Scopus citations

Abstract

Poplar Populus tremula plants which had been transformed with Arabidopsis thaliana cel1 cDNA and successfully over-expressed the gene, exhibited significant phenotypic alterations which included taller plants, larger leaves, increased stem diameter, wood volume index, dry weight and a higher percentage of cellulose and hemicellulose, compared to the wild-type plants. Transgenic A. thaliana plants over-expressing A. thaliana cel1 exhibited similar levels of cel1 mRNA in the elongation zone of the flowering stem and higher levels in mature leaves when compared with wild-type plants. CEL1 protein levels in the elongation zone of the flowering stem of transgenic plants were similar or slightly higher compared to that of the wild-type plants, whereas mature leaves of transgenic plants contained a higher level of CEL1. These data indicate that in elongating zone of Arabidopsis, CEL1 level is tightly regulated. In contrast to transgenic poplar over-expressing the A. thaliana cel1, no phenotypic difference was found between A. thaliana transgenic and wild-type plants.

Original languageAmerican English
Pages (from-to)321-330
Number of pages10
JournalMolecular Breeding
Volume14
Issue number3
DOIs
StatePublished - Oct 2004

Keywords

  • Cell wall
  • EGase
  • Transgenic poplar

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