Microgravity Science and Technology

, Volume 27, Issue 6, pp 377–386

Higher Plants in Space: Microgravity Perception, Response, and Adaptation

Original Article

DOI: 10.1007/s12217-015-9428-y

Cite this article as:
Zheng, H.Q., Han, F. & Le, J. Microgravity Sci. Technol. (2015) 27: 377. doi:10.1007/s12217-015-9428-y

Abstract

Microgravity is a major abiotic stress in space. Its effects on plants may depend on the duration of exposure. We focused on two different phases of microgravity responses in space. When higher plants are exposed to short-term (seconds to hours) microgravity, such as on board parabolic flights and sounding rockets, their cells usually exhibit abiotic stress responses. For example, Ca 2+-, lipid-, and pH-signaling are rapidly enhanced, then the production of reactive oxygen species and other radicals increase dramatically along with changes in metabolism and auxin signaling. Under long-term (days to months) microgravity exposure, plants acclimatize to the stress by changing their metabolism and oxidative response and by enhancing other tropic responses. We conclude by suggesting that a systematic analysis of regulatory networks at the molecular level of higher plants is needed to understand the molecular signals in the distinct phases of the microgravity response and adaptation.

Keywords

Microgravity Higher plant Response Adaptation 

Copyright information

© Springer Science+Business Media Dordrecht 2015

Authors and Affiliations

  1. 1.Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological SciencesChinese Academy of SciencesShanghaiChina
  2. 2.Institute of BotanyChinese Academy of SciencesBeijingChina