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Life 2014, 4(2), 205-216; doi:10.3390/life4020205

Plant Growth and Morphogenesis under Different Gravity Conditions: Relevance to Plant Life in Space

Department of Biology, Graduate School of Science, Osaka City University, Sumiyoshi-ku, Osaka 558-8585, Japan
Received: 13 March 2014 / Revised: 18 April 2014 / Accepted: 12 May 2014 / Published: 16 May 2014
(This article belongs to the Special Issue Response of Terrestrial Life to Space Conditions)
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Abstract

The growth and morphogenesis of plants are entirely dependent on the gravitational acceleration of earth. Under microgravity conditions in space, these processes are greatly modified. Recent space experiments, in combination with ground-based studies, have shown that elongation growth is stimulated and lateral expansion suppressed in various shoot organs and roots under microgravity conditions. Plant organs also show automorphogenesis in space, which consists of altered growth direction and spontaneous curvature in the dorsiventral (back and front) directions. Changes in cell wall properties are responsible for these modifications of growth and morphogenesis under microgravity conditions. Plants live in space with interesting new sizes and forms.
Keywords: automorphogenesis; cell wall; growth; microgravity; plants; space conditions automorphogenesis; cell wall; growth; microgravity; plants; space conditions
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This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Hoson, T. Plant Growth and Morphogenesis under Different Gravity Conditions: Relevance to Plant Life in Space. Life 2014, 4, 205-216.

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