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HORMONES IN PLANTS BEARING NITROGEN‐FIXING ROOT NODULES: THE DISTRIBUTION OF CYTOKININS IN VICIA FABA L.
Author(s) -
HENSON I. E.,
WHEELER C. T.
Publication year - 1976
Publication title -
new phytologist
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.742
H-Index - 244
eISSN - 1469-8137
pISSN - 0028-646X
DOI - 10.1111/j.1469-8137.1976.tb01478.x
Subject(s) - cytokinin , vicia faba , zeatin , botany , biology , root nodule , auxin , callus , nitrogen fixation , biochemistry , genetics , gene , bacteria
SUMMARY Cytokinin activity in extracts of nodules, roots, stems and leaves of Vicia faba L. was estimated using the soybean callus bioassay. High levels of cytokinins were present in nodules and leaves while the amounts detected in roots and stems were much lower. Cytokinin levels in the root nodules were as much as twelve to thirteen times those detected in the roots. At least three kinds of cytokinins were present in the plant, two of which had similar chromatographic properties to the cytokinin zeatin and its riboside. The third cytokinin had properties which distinguished it from any of the known cytokinins. This peak was predominant in the leaves while the zeatin riboside‐like peak was the main cytokinin detected in the root nodules and roots.