Role of Metabolic Gases in Reproductive Failure Under Spaceflight Conditions: Ground Based Studies With Arabidopsis

961391

07/01/1996

Event
International Conference On Environmental Systems
Authors Abstract
Content
Results obtained during the shuttle mid-deck locker experiment CHROMEX-03 suggested that failure of reproductive development of plants during spaceflight was related to a limitation in availability of metabolic gases to developing tissues due to the lack of convective air movement in microgravity. The purpose of this ground-based experiment was to determine the effect of different O2 and CO2 concentrations on plant reproductive development and growth. Fourteen day old Arabidopsis thaliana (L.) Heynh plants were grown as for the spaceflight experiment and exposed for six days to either air or one of six different air/nitrogen dilutions. Growth and reproductive responses to treatments of less than 50 mL·L-1 O2, 100 μL·L-1 CO2 were significantly different (P=0.05) from each other and all other treatments, while responses to treatments with greater than 140 mL·L-1 O2, 300 μL·L-1 CO2 were not significantly different from the air treatment. The results support our initial interpretation of the causes of reproductive failure in Arabidopsis during spaceflight and may be useful in designing future plant habitats.
Meta TagsDetails
DOI
https://doi.org/10.4271/961391
Pages
7
Citation
Crispi, M., Porterfield, D., Murgia, M., and Musgrave, M., "Role of Metabolic Gases in Reproductive Failure Under Spaceflight Conditions: Ground Based Studies With Arabidopsis," SAE Technical Paper 961391, 1996, https://doi.org/10.4271/961391.
Additional Details
Publisher
Published
Jul 1, 1996
Product Code
961391
Content Type
Technical Paper
Language
English