Polyamines and salt stress response and tolerance in Arabidopsis thaliana flowers

Plant Physiology and Biochemistry : PPB
A TassoniN Bagni

Abstract

In the present study we analysed polyamine metabolism in Arabidopsis thaliana (ecotype Columbia) flowers and stalks collected from plants germinated and grown under increasing salt-stress conditions (0-75 mM NaCl). The expression level of the different isoforms of polyamine biosynthetic enzymes was analysed by reverse transcriptase-polymerase chain reaction (RT-PCR). Spermidine synthase enzyme activity determined both in supernatant and pellet fractions, together with RT-PCR results, led us to hypothesize a different intracellular compartmentation of the isoforms of these enzymes. Free and conjugated polyamines (perchloric acid-soluble and -insoluble) were measured. Free spermidine was the most abundant polyamine and its levels, such as those of free spermine, increased with salt concentration, supporting the hypothesis for a specific role of those polyamines in the response and tolerance to salt stress of Arabidopsis thaliana flowers.

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Citations

Nov 26, 2009·Functional & Integrative Genomics·Tilahun AbebeRoger P Wise
Sep 18, 2012·Applied Biochemistry and Biotechnology·Apiradee PothipongsaAran Incharoensakdi
Mar 5, 2013·Applied Radiation and Isotopes : Including Data, Instrumentation and Methods for Use in Agriculture, Industry and Medicine·Mandar SenguptaSarmistha Sen Raychaudhuri
Nov 7, 2009·Science·Eric A Hanushek
Jul 30, 2011·Science·Wolfgang Lutz, Samir KC
Feb 9, 2010·Plant Physiology and Biochemistry : PPB·Yukie NakaYoshihiro Takahashi
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Apr 9, 2014·GM Crops & Food·Malabika Roy PathakShabir H Wani
Sep 28, 2016·Frontiers in Plant Science·Kamala GuptaBhaskar Gupta
Apr 1, 2011·Physiology and Molecular Biology of Plants : an International Journal of Functional Plant Biology·Pranjal Hazarika, Manchikatla Venkat Rajam
Feb 6, 2020·Plant, Cell & Environment·Jing CuiGuillaume Tcherkez

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