Reserve Utilization in Seeds ofArabidopsis thalianaGerminating in Microgravity

Seed reserve lipid utilization inArabidopsis thaliana(L.) Heynh., ecotypeLandsbergerecta, is delayed when germination takes place in microgravity; the cotyledon symplast lipid volume fraction is less than 7% in controls, whereas in microgravity samples over 15% of the symplast volume is lipid. Growt...

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Bibliographic Details
Published in:International journal of plant sciences 2004-07, Vol.165 (4), p.545-551
Main Authors: Briarty, L. G., Maher, E. P.
Format: Article
Language:English
Subjects:
Cell walls
Cotyledons
Flight control
Lipids
Microgravity
Plant cells
Plants
Seedlings
Space flight
Tissue hydration
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Summary:Seed reserve lipid utilization inArabidopsis thaliana(L.) Heynh., ecotypeLandsbergerecta, is delayed when germination takes place in microgravity; the cotyledon symplast lipid volume fraction is less than 7% in controls, whereas in microgravity samples over 15% of the symplast volume is lipid. Growth rate in the root is reduced in microgravity. These effects are interpreted as probably being the result of localized anoxia in the absence of atmospheric convection and mixing in the sealed growth chambers used.
ISSN:1058-5893
1537-5315
DOI:10.1086/386379