Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Growth, breakdown, repair, and rapid contraction of microtubular axopodia in the heliozoan Actinophrys sol
AU - Ockleford, C D
AU - Tucker, J B
PY - 1973/9
Y1 - 1973/9
N2 - Breakdown of microtubules takes place at the tips of tubules at the distal ends of axopodia when axopodial shortening is induced with colchicine. When small flagellates are captured for ingestion, rapid contraction of axopodia (100 μm in under a second) occurs which apparently involves breakdown of axonemal microtubules. Elongation of a single axopodium after rapid contraction, when all other axopodia are of normal length, proceeds at the same rate as it does when all the axopodia are growing out after microtubule-breakdown induced by cold treatment. In both cases the rate of elongation decreases as axopodia increase in length. Axopodia elastically resist mild bending along their longitudinal axes. They yield nonelastically when more severe bending is applied; bends are formed at certain points along their longitudinal axes. These bends move out along axopodia to their tips.
AB - Breakdown of microtubules takes place at the tips of tubules at the distal ends of axopodia when axopodial shortening is induced with colchicine. When small flagellates are captured for ingestion, rapid contraction of axopodia (100 μm in under a second) occurs which apparently involves breakdown of axonemal microtubules. Elongation of a single axopodium after rapid contraction, when all other axopodia are of normal length, proceeds at the same rate as it does when all the axopodia are growing out after microtubule-breakdown induced by cold treatment. In both cases the rate of elongation decreases as axopodia increase in length. Axopodia elastically resist mild bending along their longitudinal axes. They yield nonelastically when more severe bending is applied; bends are formed at certain points along their longitudinal axes. These bends move out along axopodia to their tips.
KW - Animals
KW - Cell Nucleus
KW - Elasticity
KW - Eukaryota
KW - Membranes
KW - Microscopy, Electron
KW - Microscopy, Electron, Scanning
KW - Microscopy, Phase-Contrast
KW - Microtubules
KW - Organoids
KW - Time Factors
U2 - 10.1016/S0022-5320(73)90005-1
DO - 10.1016/S0022-5320(73)90005-1
M3 - Journal article
C2 - 4586420
VL - 44
SP - 369
EP - 387
JO - Journal of Ultrastructure Research
JF - Journal of Ultrastructure Research
SN - 0022-5320
IS - 5-6
ER -