ISSN:
1432-2048
Keywords:
Amyloplast sedimentation
;
Coleoptile (amyloplasts)
;
Cytoplasmic streaming
;
Graviperception
;
Zea (graviperception)
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Abstract Living maize (Zea mays L.) coleoptile cells were observed using a horizontal microscope to determine the interaction between cytoplasmic streaming and gravity-induced amyloplast sedimentation. Sedimentation is heavily influenced by streaming which may (1) hasten or slow the velocity of amyloplast movement and (2) displace the plastid laterally or even upwards before or after sedimentation. Amyloplasts may move through transvacuolar strands or through the peripheral cytoplasm which may be divided into fine cytoplasmic strands of much smaller diameter than the plastids. The results indicate that streaming may contribute to the dynamics of graviperception by influencing amyloplast movement.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00391025
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