Jr-ZFP2, encoding a Cys2/His2-type transcription factor, is involved in the early stages of the mechano-perception pathway and specifically expressed in mechanically stimulated tissues in woody plants

Plant, Cell & Environment
Nathalie Leblanc-FournierJean-Louis Julien

Abstract

Plants respond to environmental mechanical stimulation, such as wind, by modifying their growth and development. To study the molecular effects of stem bending on 3-week-old walnut trees, a cDNA-AFLP approach was developed. This study allowed the identification of a cDNA, known as Jr-ZFP2, encoding a Cys2/His2-type two-zinc-fingered transcription factor. Reverse transcriptase-polymerase chain reaction analysis confirmed that Jr-ZFP2 mRNA accumulation is rapidly and transiently induced after mechanical stimulation. After bending, Jr-ZFP2 transcript increase was restricted to the stem, the organ where the mechanical solicitation was applied. Furthermore, other abiotic factors, such as cold or salt, did not modify Jr-ZFP2 mRNA accumulation in walnut stems under our experimental conditions, whereas growth studies demonstrated that salt stress was actually perceived by the plants. These results suggest that the regulation of Jr-ZFP2 expression is more sensitive to mechanical stimulus. This gene will be a good marker for studying the early stages of mechanical perception in woody plants.

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Citations

Apr 7, 2010·Journal of Experimental Botany·Ludovic MartinCatherine Coutand
Feb 22, 2011·Annual Review of Plant Biology·Vincent MirabetOlivier Hamant
Mar 5, 2016·Plant Science : an International Journal of Experimental Plant Biology·Barry GardinerBruno Moulia
Dec 17, 2009·The New Phytologist·Olivier Hamant, Jan Traas
Mar 11, 2015·Frontiers in Plant Science·Bruno MouliaJean-Louis Julien
Mar 2, 2019·Journal of Experimental Botany·Benoit Landrein, Gwyneth Ingram
Aug 8, 2009·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Efi EfratiRaz Kupferman

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