Effect of kinetin on auxin uptake and distribution in normal and tumor-prone Nicotiana shoots |
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Authors: | Bayer Margret H |
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Institution: | The Institute for Cancer Research Fox Chase, Philadelphia, PA U.S.A. |
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Abstract: | Stem segments of non-tumorous Nicotiana glauca and N. langsdorffiiplants and of their tumor-producing amphidiploid F1 hybrid weretreated with 6-furfurylaminopurine (kinetin) prior to transporttests with applied labeled indoleacetic acid (IAA-2-14C). Kinetin-treatmentsincreased the uptake of IAA in non-tumorous shoots; the IAAuptake by N. langsdorffii segments was increased up to 3-fold.The auxin uptake in stem-segments of the tumor-forming hybrid,however, could not be increased significantly by kinetin. Theeven distribution of IAA-14C in segments of normal and tumorproneNicotiana shoots is stimulated by kinetin. Data are discussedin conjunction with previous results on auxin transport andtumorformation in Nicotiana. (Received August 8, 1972; ) |
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