Oscillations of axial plant organs

Details Oscillations of axial plant organs Oscillations of axial plant organs

Aug 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994adspr..14..149b&link_type=abstract

Advances in Space Research, Volume 14, Issue 8, p. 149-158.

Mathematics

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Scientific paper

The tips of roots and shoots commonly show lateral movements as they grow forwards. These occur as both circumnutations (with long periods and large amplitudes) and micronutations (with short periods and small amplitudes). Their properties are reviewed, with emphasis on roots, and possible ways in which they could be regulated are discussed. The mechanisms could include long-range controls (for circumnutations) that depend on transmissible signals using steps common to gravitropism, and short-range controls (for micronutations) that operate within the elongation zone. The former are a property of the apex as a whole, while the latter may be confined to localized groups of cells. Simulation of nutations is presented with a view to isolating key physiological processes. However, this approach is limited by the current inadequate understanding of the growth mechanisms involved.

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