Abstract
AbstractRoots of garden cress (Lepidium sativum L.) seedlings were made starch‐free by treatment with gibberellic acid and kinetic for 29 hours at 35°C in the dark. After 3 hours of temperature adaptation at 21°C the starch‐depleted roots were unable to respond to gravity, but elongated 0.48 mm por hour. Under the same conditions control roots pretreated in plain water at 21 and at 35°C elongated 0.64 and 0.33 mm per hour, respcetively (at 21°C). When the hormone‐treated seedlings were illuminated, their roots reformed starch after 20 to 24 hours; simultaneously the geotropic responsiveness was restored. The results are interpreted in support of the statolith theory.
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Dates
Type | When |
---|---|
Created | 19 years, 4 months ago (April 30, 2006, 1:11 p.m.) |
Deposited | 1 year, 9 months ago (Nov. 10, 2023, 1:33 p.m.) |
Indexed | 1 year, 8 months ago (Dec. 12, 2023, 9:01 a.m.) |
Issued | 56 years, 3 months ago (June 1, 1969) |
Published | 56 years, 3 months ago (June 1, 1969) |
Published Online | 19 years, 4 months ago (April 28, 2006) |
Published Print | 56 years, 3 months ago (June 1, 1969) |
@article{Iversen_1969, title={Elimination of Geotropic Responsiveness in Roots of Cress (Lepidium sativum) by Removal of Statolith Starch}, volume={22}, ISSN={1399-3054}, url={http://dx.doi.org/10.1111/j.1399-3054.1969.tb09115.x}, DOI={10.1111/j.1399-3054.1969.tb09115.x}, number={6}, journal={Physiologia Plantarum}, publisher={Wiley}, author={Iversen, Tor‐Henning}, year={1969}, month=jun, pages={1251–1262} }