Influence of arachidonic acid and phytoviruses on the hormonal system of potato plants grown in vitro

Influence of arachidonic acid and phytoviruses on the hormonal system of potato plants grown in... Changes in the phytohormonal system during the development of antivirus resistance was investigated. This resistance was induced by arachidonic acid (AA) in potato plants (Solanum tuberosum L.) grown in vitro. The plants in tubes were treated with AA 7 days before infection with tobacco mosaic virus or potato X virus. These plants were used for ABA, IAA, and cytokinin quantification. As a rule, phytoviruses increased ABA and cytokinin levels and decreased that of IAA in both immunized and unimmunized plants. AA significantly decreased the phytovirus content in potato plants at least during 3 weeks. In general, AA immunization acted as a limiting factor for increasing the ABA and cytokinin concentrations during virus pathogenesis in experimental plants. However, no regularity in the changes of the IAA concentration was noted. The data obtained showed that AA-induced changes in the hormonal system could be an important factor in the mechanism of plant resistance against phytopatogenic viruses. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Plant Physiology Springer Journals

Influence of arachidonic acid and phytoviruses on the hormonal system of potato plants grown in vitro

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Publisher
Nauka/Interperiodica
Copyright
Copyright © 2006 by MAIK “Nauka/Interperiodica”
Subject
Life Sciences; Plant Sciences; Plant Physiology
ISSN
1021-4437
eISSN
1608-3407
D.O.I.
10.1134/S1021443706020105
Publisher site
See Article on Publisher Site

Abstract

Changes in the phytohormonal system during the development of antivirus resistance was investigated. This resistance was induced by arachidonic acid (AA) in potato plants (Solanum tuberosum L.) grown in vitro. The plants in tubes were treated with AA 7 days before infection with tobacco mosaic virus or potato X virus. These plants were used for ABA, IAA, and cytokinin quantification. As a rule, phytoviruses increased ABA and cytokinin levels and decreased that of IAA in both immunized and unimmunized plants. AA significantly decreased the phytovirus content in potato plants at least during 3 weeks. In general, AA immunization acted as a limiting factor for increasing the ABA and cytokinin concentrations during virus pathogenesis in experimental plants. However, no regularity in the changes of the IAA concentration was noted. The data obtained showed that AA-induced changes in the hormonal system could be an important factor in the mechanism of plant resistance against phytopatogenic viruses.

Journal

Russian Journal of Plant PhysiologySpringer Journals

Published: Mar 24, 2006

References

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