Development of the Plant Research Unit for Use on Space Station

Turner, M.; Lomax, P.; Antonini, Kelly; Porter, Richard W.; Cobb, Melvin N.; Heathcote, David

doi:10.4271/951623

Cited by 3 publications

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“…This may explain the success of media that maintain a fairly even distribution of water, such as agar Merkys and Laurinavichyus, 1990;Heyenga, 1994;Kuang et al, 1995) and phenolic foam Levine and Krikorian, 1992), in supporting plant growth both on the ground and during spaceflight. Severa1 more advanced systems are currently being tested or developed for long-term use (Dreschel et al, 1994;Morrow et al, 1995;Turner et al, 1995), and evaluation of the root function in these new systems will be critical for their acceptance by the scientific community.…”

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confidence: 99%

Spaceflight Exposure Effects on Transcription, Activity, and Localization of Alcohol Dehydrogenase in the Roots of Arabidopsis thaliana

et al. 1997

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Although considerable research and speculation have been directed toward understanding a plant's perception of gravity and the resulting gravitropic responses, little is known about the role of gravity-dependent physical processes in normal physiological function. These studies were conducted to determine whether the roots of plants exposed to spaceflight conditions may be experiencing hypoxia. Arabidopsis fhaliana (1.) Heynh. plants were grown in agar medium during 6 The increase in ADH activity associated with the spaceflight roots was realized by a 28% decrease in oxygen availability in a groundbased study; however, no reduction in redox potential was observed in measurements of the spaceflight bulk agar. Spaceflight exposure appears to effect a hypoxic response in the roots of agar-grown plants that may be caused by changes in gravity-mediated fluid and/or gas behavior.

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confidence: 99%