Hormonal Aspects of Different Resistance of Arabidopsis thalianaMutants to Ultraviolet Radiation

Hormonal Aspects of Different Resistance of Arabidopsis thalianaMutants to Ultraviolet Radiation Ultraviolet radiation suppressed growth, elevated the content of ABA, and enhanced the evolution of ethylene in the mutants of Arabidopsis thaliana(L.) Heynh. As the radiation dosage rose, all the characteristics increased. Among the three lines studied (Enkheime, E 6 glabra, and vc"er"gl"an"), the plants of the latter were the most resistant to UV radiation. They were also notable for a higher level of ABA both before and after radiation treatment and greater evolution of ethylene after the exposure to radiation. The study of vc, er, gl, and anpoint mutants showed that the ermutant was the most resistant and the glmutant was the most sensitive. The results obtained suggest that the resistance of the vc"er"gl"anline primarily depending on ermutation was related to high levels of ethylene evolution and ABA under UV-B stress. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Plant Physiology Springer Journals

Hormonal Aspects of Different Resistance of Arabidopsis thalianaMutants to Ultraviolet Radiation

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Publisher
Kluwer Academic Publishers-Plenum Publishers
Copyright
Copyright © 2001 by MAIK “Nauka/Interperiodica”
Subject
Life Sciences; Plant Sciences
ISSN
1021-4437
eISSN
1608-3407
D.O.I.
10.1023/A:1016618517615
Publisher site
See Article on Publisher Site

Abstract

Ultraviolet radiation suppressed growth, elevated the content of ABA, and enhanced the evolution of ethylene in the mutants of Arabidopsis thaliana(L.) Heynh. As the radiation dosage rose, all the characteristics increased. Among the three lines studied (Enkheime, E 6 glabra, and vc"er"gl"an"), the plants of the latter were the most resistant to UV radiation. They were also notable for a higher level of ABA both before and after radiation treatment and greater evolution of ethylene after the exposure to radiation. The study of vc, er, gl, and anpoint mutants showed that the ermutant was the most resistant and the glmutant was the most sensitive. The results obtained suggest that the resistance of the vc"er"gl"anline primarily depending on ermutation was related to high levels of ethylene evolution and ABA under UV-B stress.

Journal

Russian Journal of Plant PhysiologySpringer Journals

Published: Oct 10, 2004

References

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