Cloning and characterization of elongation specific endo-1,4-β-glucanase (cell) from Arabidopsis thaliana

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

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

57 Scopus citations


The isolation of an elongation-specific endo-1,4-β-glucanase-cel1 from Arabidopsis thaliana was made possible by the fact that considerable homology exists between different endo-1,4-β-glucanase (EGase) genes from different plants. Degenerate primers were synthesized based on two conserved regions from the avocado and tomato cellulase amino acid sequences. The A. thaliana cel1 cDNA gene was found to encode a 54 kDa protein; sequence comparison with the avocado EGase revealed 56% identity. Northern blot analysis of cel1 suggested its developmental regulation. RNA transcripts were undetectable in fully expanded leaves as well as at the basal internode of flowering stems. However, a strong transcript signal was detected in the elongating zone of flowering stems of normal plants. The RNA transcript level of cel1 in the elongating zone of dwarf flowering stems was significantly lower than in the corresponding zone in normal plants. This suggests cel1's involvement in cell elongation in A. thaliana. Transgenic tobacco plants transformed with the putative cel1 promoter region fused to the gus reporter gene, showed a significant GUS staining both in shoot and root elongating zones. These results further substantiate the link between cel1 expression and plant cell elongation.

Original languageAmerican English
Pages (from-to)837-842
Number of pages6
JournalPlant Molecular Biology
Issue number6
StatePublished - Aug 1997


  • Arabidopsis thaliana
  • Elongation
  • Gene expression
  • Glucanase


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