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TRUMPET FILAMENTS IN LAMINARIA DIGITATA AS AN ARTEFACT
Author(s) -
Van Went J. L.,
Tammes P. M. L.
Publication year - 1973
Publication title -
acta botanica neerlandica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.871
H-Index - 87
eISSN - 1438-8677
pISSN - 0044-5983
DOI - 10.1111/j.1438-8677.1973.tb00820.x
Subject(s) - anatomy , plasmolysis , turgor pressure , chemistry , biophysics , materials science , biology , cell wall , biochemistry
SUMMARY When turgor is lost, the walls of the filaments in the medulla swell and the lumina are constricted to a fraction of their original diameter. The sieve plates of the filaments resist the constriction, giving rise to the double “trumpet” form with a plate in the middle. The original situation was deduced from: a . calculation of cell wall and lumen volume, based on K and Na analysis and examination of sections; b . perspex replicas from deep‐frozen tissue and sections from tissue frozen before fixation; c . subsequent loss of volume and recovery of medullary tissue after being cut through; d . plasmolysis experiments.