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Updated: Jun 25, 2026
Wide-Field, Real-Time Imaging of Local and Systemic Wound Signals in Arabidopsis
Published on: June 4, 2021
Analysis of the poplar phloem proteome and its response to leaf wounding
Nicole J Dafoe1, Arezoo Zamani, Abul K M Ekramoddoullah
1Centre for Forest Biology and Department of Biology, University of Victoria, Victoria, BC, Canada.
Abstract:
Phloem exudate collected from hybrid poplar (Populus trichocarpa x Populus deltoides) was estimated to have more than 100 proteins, of which 48 were identified using LC-MS/MS. Comparative two-dimensional gel electrophoresis demonstrated that two phloem exudate proteins were significantly (P<0.05) upregulated 24 h after leaf wounding. These were identified as pop3/SP1 and a thaumatin-like protein. This is the first characterization of a phloem proteome from a tree species.
