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How effectively does a clinostat mimic the ultrastructural effects of microgravity on plant cells?Columella cells of seedlings of Zea mays L. cv. Bear Hybrid grown in the microgravity of orbital flight allocate significantly larger relative-volumes to hyaloplasm and lipid bodies, and significantly smaller relative-volumes to dictyosomes, plastids, and starch than do columella cells of seedlings grown at 1 g. The ultrastructure of columella cells of seedlings grown at 1 g and on a rotating clinostat is not significantly different. However, the ultrastructure of cells exposed to these treatments differs significantly from that of seedlings grown in microgravity. These results indicate that the actions of a rotating clinostat do not mimic the ultrastructural effects of microgravity in columella cells of Z. mays.
Document ID
20040090370
Acquisition Source
Headquarters
Document Type
Reprint (Version printed in journal)
Authors
Moore, R.
(Wright State University Dayton, Ohio 45435)
Date Acquired
August 21, 2013
Publication Date
January 1, 1990
Publication Information
Publication: Annals of botany
Volume: 65
ISSN: 0305-7364
Subject Category
Life Sciences (General)
Funding Number(s)
CONTRACT_GRANT: NAGW-1738
Distribution Limits
Public
Copyright
Other
Keywords
Non-NASA Center
short duration
NASA Experiment Number SE82-19
Flight Experiment
NASA Discipline Number 29-20
NASA Program Space Biology
manned
STS-61C Shuttle Project
NASA Discipline Plant Biology

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