On the Relationship between the Activity of O-Methyltransferase and the Content of Lignin in Various Organs of Kidney Bean

On the Relationship between the Activity of O-Methyltransferase and the Content of Lignin in... The activity of O-methyltransferase (OMT) and the content of lignin in various organs of 12- to 14-day-old seedlings of kidney bean (Phaseolus vulgarisL., cv. Saksa) were determined. The epicotyl and hypocotyl were characterized by the highest OMT activity, and the leaves, by the lowest OMT activity. At the same time, the lignin content gradually increased in the following order: leaves < epicotyl < hypocotyl < roots. Thus, in kidney bean seedlings, there is no direct relationship between the OMT activity and the lignin content. It is suggested that lignin biosynthesis is limited by biosynthetic steps other than O-methylation of caffeic and 5-hydroxyferulic acids affected by OMT. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Plant Physiology Springer Journals

On the Relationship between the Activity of O-Methyltransferase and the Content of Lignin in Various Organs of Kidney Bean

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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:1016795228463
Publisher site
See Article on Publisher Site

Abstract

The activity of O-methyltransferase (OMT) and the content of lignin in various organs of 12- to 14-day-old seedlings of kidney bean (Phaseolus vulgarisL., cv. Saksa) were determined. The epicotyl and hypocotyl were characterized by the highest OMT activity, and the leaves, by the lowest OMT activity. At the same time, the lignin content gradually increased in the following order: leaves < epicotyl < hypocotyl < roots. Thus, in kidney bean seedlings, there is no direct relationship between the OMT activity and the lignin content. It is suggested that lignin biosynthesis is limited by biosynthetic steps other than O-methylation of caffeic and 5-hydroxyferulic acids affected by OMT.

Journal

Russian Journal of Plant PhysiologySpringer Journals

Published: Oct 10, 2004

References

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