Concepts, Components, and Controls for a CELSS

Sager, John C.; Drysdale, Alan

doi:10.1007/978-94-015-8889-8_13

Cited by 4 publications

(2 citation statements)

References 39 publications

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“…Plant space biology has been closely associated with human space exploration in that plants are key parts of biologically based life support. Learning to grow plants in space is an essential goal for longduration space missions since crop growth in space will aid with air regeneration, food production, and water recycling (Sager and Drysdale, 1996;Stankovic, 2001).…”

Section: Introductionmentioning

confidence: 99%

Seed-to-Seed-to-Seed Growth and Development of Arabidopsis in Microgravity

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Busse²,

Stanković³

2014

Astrobiology

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Arabidopsis thaliana was grown from seed to seed wholly in microgravity on the International Space Station. Arabidopsis plants were germinated, grown, and maintained inside a growth chamber prior to returning to Earth. Some of these seeds were used in a subsequent experiment to successfully produce a second (back-toback) generation of microgravity-grown Arabidopsis. In general, plant growth and development in microgravity proceeded similarly to those of the ground controls, which were grown in an identical chamber. Morphologically, the most striking feature of space-grown Arabidopsis was that the secondary inflorescence branches and siliques formed nearly perpendicular angles to the inflorescence stems. The branches grew out perpendicularly to the main inflorescence stem, indicating that gravity was the key determinant of branch and silique angle and that light had either no role or a secondary role in Arabidopsis branch and silique orientation. Seed protein bodies were 55% smaller in space seed than in controls, but protein assays showed only a 9% reduction in seed protein content. Germination rates for space-produced seed were 92%, indicating that the seeds developed in microgravity were healthy and viable. Gravity is not necessary for seed-to-seed growth of plants, though it plays a direct role in plant form and may influence seed reserves.

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Section: Introductionmentioning

confidence: 99%

Seed-to-Seed-to-Seed Growth and Development of Arabidopsis in Microgravity

Link

Busse²,

Stanković³

2014

Astrobiology

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“…The National Aeronautics and Space Administration (NASA) is interested in using plants to regenerate air, cleanse water, and produce food as part of a life-support system for long-duration space missions (Sager & Drysdale 1997). As plant productivity is higher at low oxygen tensions and less oxygen would be required to maintain the growth environment, a low oxygen/low pressure growth scenario is being considered for this specialized application.…”

mentioning

confidence: 99%

Influence of atmospheric oxygen on leaf structure and starch deposition in Arabidopsis thaliana

Ramonell

Kuang

Porterfield

et al. 2001

Plant Cell & Environment

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Plant culture in oxygen concentrations below ambient is known to stimulate vegetative growth, but apart from reports on increased leaf number and weight, little is known about development at subambient oxygen concentrations. Arabidopsis thaliana (L.) Heynh. (cv. Columbia) plants were grown full term in pre-mixed atmospheres with oxygen partial pressures of 2·5, 5·1, 10·1, 16·2, and 21·3 kPa O 2 , 0·035 kPa CO 2 and the balance nitrogen under continuous light. Fully expanded leaves were harvested and processed for light and transmission electron microscopy or for starch quantification. Growth in subambient oxygen concentrations caused changes in leaf anatomy (increased thickness, stomatal density and starch content) that have also been described for plants grown under carbon dioxide enrichment. However, at the lowest oxygen treatment (2·5 kPa), developmental changes occurred that could not be explained by changes in carbon budget caused by suppressed photorespiration, resulting in very thick leaves and a dwarf morphology. This study establishes the leaf parameters that change during growth under low O 2 , and identifies the lower concentration at which O 2 limitation on transport and biosynthetic pathways detrimentally affects leaf development.

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Waste Processing for Advanced Life Support: Influences on Operational Strategies and Design

Drysdale¹,

Finger²

1997

SAE Technical Paper Series

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Concepts, Components, and Controls for a CELSS

Cited by 4 publications

References 39 publications

Seed-to-Seed-to-Seed Growth and Development of Arabidopsis in Microgravity

Seed-to-Seed-to-Seed Growth and Development of Arabidopsis in Microgravity

Influence of atmospheric oxygen on leaf structure and starch deposition in Arabidopsis thaliana

Waste Processing for Advanced Life Support: Influences on Operational Strategies and Design

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