DOI: 10.1111/j.1399-3054.1968.tb07305.x. Movement of Amyloplasts in the Root Cap Cells of Geotropically Sensitive Roots

Movement of Amyloplasts in the Root Cap Cells of Geotropically Sensitive Roots

10.1111/j.1399-3054.1968.tb07305.x

Crossref journal-article

Wiley

Physiologia Plantarum (311)

Abstract

AbstractThe root cap of Lepidium sativum under our culture conditions was found to contain 7 (or occasionally 8) storeys of starch‐containing cells. In the youngest one (or two) of these storeys the amyloplasts are small and the cells appear embryonic. In the 6 non‐embryonic storeys the amyloplasts are large. Upon inversion of the root, the amyloplasts in the 3 youngest of the 6 non‐emhryonic storeys start falling toward the opposite end of the cell at about 72 μ per h (at 21 C), hut they maintain this speed for only 6 to 12 min, after which they virtually come to a stop. As a result, it takes 10 to 12 min before any of the amyloplasts get approximately as close to the ceiling as they were to the floor before the inversion; and this is true only of the 2 youngest of the non‐embryonic storeys. When the root is placed horizontal, whether coming from the normal or the inverted position, the amyloplasts reach the lower, longitudinal wall in 15 min or less. The positions of the amyloplasts in the cells of the 3 oldest starch‐containing storeys are erratic and show little, if any, dependency on the preceding time of inversion.

Bibliography

Iversen, T., Pedersen, K., & Larsen, P. (1968). Movement of Amyloplasts in the Root Cap Cells of Geotropically Sensitive Roots. Physiologia Plantarum, 21(4), 811â819. Portico.

Authors 3

Tor‐Henning Iversen (first)
Knut Pedersen (additional)
Poul Larsen (additional)

References 15 Referenced 32

{'key': 'e_1_2_1_2_1', 'first-page': '197', 'volume-title': 'Symp. Soc. Exp. Biol.', 'author': 'Audus L. J.', 'year': '1962'} / Symp. Soc. Exp. Biol. by Audus L. J. (1962)
{'issue': '2', 'key': 'e_1_2_1_3_1', 'first-page': '74', 'article-title': 'Primäreffekte bei der geolropisehen Reaktion', 'volume': '17', 'author': 'Brauner L.', 'year': '1962', 'journal-title': 'Encyclopedia of Plant Physiology'} / Encyclopedia of Plant Physiology / Primäreffekte bei der geolropisehen Reaktion by Brauner L. (1962)
{'key': 'e_1_2_1_4_1', 'first-page': '163', 'article-title': 'Untersuchungen zur Stalolithenhypothese', 'volume': '26', 'author': 'Ruder J.', 'year': '1908', 'journal-title': 'Ber. dtsch. bot. Ges.'} / Ber. dtsch. bot. Ges. / Untersuchungen zur Stalolithenhypothese by Ruder J. (1908)
{'key': 'e_1_2_1_5_1', 'first-page': '221', 'article-title': 'Untersuchungen über den geotropischen Reizvorgang I. II', 'volume': '41', 'author': 'Fitting H.', 'year': '1905', 'journal-title': 'Jb. wiss. Bot.'} / Jb. wiss. Bot. / Untersuchungen über den geotropischen Reizvorgang I. II by Fitting H. (1905)
10.1111/j.1469-8137.1964.tb07385.x
10.1093/oxfordjournals.aob.a090401 / Ann. Bot. / The effect of temperature on the geotropism of seedlings of Lathyrus odoratus by Hawker L. E. (1933)
{'key': 'e_1_2_1_8_1', 'volume-title': 'Principles and Practice', 'author': 'Jensen W. A.', 'year': '1962'} / Principles and Practice by Jensen W. A. (1962)
{'key': 'e_1_2_1_9_1', 'first-page': '161', 'article-title': 'Die Perception des Schwerereizes in der Pflanze', 'volume': '22', 'author': 'Jost L.', 'year': '1902', 'journal-title': 'Biol. Centr.-bl.'} / Biol. Centr.-bl. / Die Perception des Schwerereizes in der Pflanze by Jost L. (1902)
10.1111/j.1399-3054.1965.tb06934.x
{'key': 'e_1_2_1_11_1', 'volume-title': 'Der Geotropisnius der Pflanzen', 'author': 'Rawitscher F.', 'year': '1932'} / Der Geotropisnius der Pflanzen by Rawitscher F. (1932)
10.1111/j.1438-8677.1914.tb07595.x / Ber. dtsch. bot Ges. / Vorläufige Mitteilung eines Experimentes zur Statolithentheorie by Richter E. (1914)
{'key': 'e_1_2_1_13_1', 'first-page': '172', 'article-title': 'Betrachtungen und Vcrsuche zur Slatolithenhypothese', 'volume': '48', 'author': 'Ubisch G.', 'year': '1928', 'journal-title': 'Biol. Zentr.-bl.'} / Biol. Zentr.-bl. / Betrachtungen und Vcrsuche zur Slatolithenhypothese by Ubisch G. (1928)
10.1146/annurev.pp.17.060166.002115
{'issue': '39', 'key': 'e_1_2_1_15_1', 'article-title': 'Über die längsangreifende Schwerkraft und das Sinusgcsetz. I. II', 'volume': '42', 'author': 'Zimmermann W.', 'year': '1924', 'journal-title': 'Ber. dtsch. bot. Ges.'} / Ber. dtsch. bot. Ges. / Über die längsangreifende Schwerkraft und das Sinusgcsetz. I. II by Zimmermann W. (1924)
{'key': 'e_1_2_1_16_1', 'first-page': '631', 'article-title': 'Beitriige zur Kenntniss der Georeaktionen. I. Geotonische Längskraftwirkungen auf orthotrope Hauptwurzeln', 'volume': '66', 'author': 'Zimmermann W.', 'year': '1927', 'journal-title': 'Jb. wiss. Bot.'} / Jb. wiss. Bot. / Beitriige zur Kenntniss der Georeaktionen. I. Geotonische Längskraftwirkungen auf orthotrope Hauptwurzeln by Zimmermann W. (1927)

Dates

Type	When
Created	19 years, 4 months ago (April 30, 2006, 12:58 p.m.)
Deposited	1 year, 9 months ago (Nov. 10, 2023, 7:39 p.m.)
Indexed	1 year, 8 months ago (Dec. 12, 2023, 8:58 a.m.)
Issued	57 years, 5 months ago (April 1, 1968)
Published	57 years, 5 months ago (April 1, 1968)
Published Online	19 years, 4 months ago (April 28, 2006)
Published Print	57 years, 5 months ago (April 1, 1968)

Funders 0

None

BibTeX

@article{Iversen_1968, title={Movement of Amyloplasts in the Root Cap Cells of Geotropically Sensitive Roots}, volume={21}, ISSN={1399-3054}, url={http://dx.doi.org/10.1111/j.1399-3054.1968.tb07305.x}, DOI={10.1111/j.1399-3054.1968.tb07305.x}, number={4}, journal={Physiologia Plantarum}, publisher={Wiley}, author={Iversen, Tor‐Henning and Pedersen, Knut and Larsen, Poul}, year={1968}, month=apr, pages={811–819} }

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