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Int. J. Mol. Sci. 2013, 14(3), 4545-4559; doi:10.3390/ijms14034545
Article

Cesium Inhibits Plant Growth through Jasmonate Signaling in Arabidopsis thaliana

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Received: 25 December 2012; in revised form: 25 January 2013 / Accepted: 6 February 2013 / Published: 25 February 2013
(This article belongs to the Special Issue Signalling Molecules and Signal Transduction in Cells)
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Abstract: It has been suggested that cesium is absorbed from the soil through potassium uptake machineries in plants; however, not much is known about perception mechanism and downstream response. Here, we report that the jasmonate pathway is required in plant response to cesium. Jasmonate biosynthesis mutant aos and jasmonate-insensitive mutant coi1-16 show clear resistance to root growth inhibition caused by cesium. However, the potassium and cesium contents in these mutants are comparable to wild-type plants, indicating that jasmonate biosynthesis and signaling are not involved in cesium uptake, but involved in cesium perception. Cesium induces expression of a high-affinity potassium transporter gene HAK5 and reduces potassium content in the plant body, suggesting a competitive nature of potassium and cesium uptake in plants. It has also been found that cesium-induced HAK5 expression is antagonized by exogenous application of methyl-jasmonate. Taken together, it has been indicated that cesium inhibits plant growth via induction of the jasmonate pathway and likely modifies potassium uptake machineries.
Keywords: cesium; potassium; Arabidopsis thaliana; jasmonate; HAK5 cesium; potassium; Arabidopsis thaliana; jasmonate; HAK5
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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MDPI and ACS Style

Adams, E.; Abdollahi, P.; Shin, R. Cesium Inhibits Plant Growth through Jasmonate Signaling in Arabidopsis thaliana. Int. J. Mol. Sci. 2013, 14, 4545-4559.

AMA Style

Adams E, Abdollahi P, Shin R. Cesium Inhibits Plant Growth through Jasmonate Signaling in Arabidopsis thaliana. International Journal of Molecular Sciences. 2013; 14(3):4545-4559.

Chicago/Turabian Style

Adams, Eri; Abdollahi, Parisa; Shin, Ryoung. 2013. "Cesium Inhibits Plant Growth through Jasmonate Signaling in Arabidopsis thaliana." Int. J. Mol. Sci. 14, no. 3: 4545-4559.


Int. J. Mol. Sci. EISSN 1422-0067 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert