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Cytoplasmic streaming affects gravity-induced amyloplast sedimentation in maize coleoptilesLiving 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.
Document ID
20040120783
Acquisition Source
Headquarters
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Sack, F. D.
(Boyce Thompson Institute for Plant Research, Cornell University Ithaca, NY 14853, United States)
Leopold, A. C.
Date Acquired
August 22, 2013
Publication Date
January 1, 1985
Publication Information
Publication: Planta
Volume: 164
ISSN: 0032-0935
Subject Category
Life Sciences (General)
Funding Number(s)
CONTRACT_GRANT: NAGW-3
Distribution Limits
Public
Copyright
Other

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