Distortion of spores of moss Venturiella under ultra high pressure

F. Ono, N. Nishihira, M. Sougawa, Y. Hada, Y. Mori, K. Takarabe, M. Saigusa, Y. Matsushima, D. Yamazaki, E. Ito, N. L. Saini

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Abstract

In our previous studies on the tolerance of living organisms such as planktons and spores of mosses to the high hydrostatic pressure of 7.5 GPa, we showed that all the samples could be borne at this high pressure. These studies have been extended to the extreme high pressure of 20 GPa by using a Kawai-type octahedral anvil press. It was found that the average diameter of the spores of Venturiella exposed to 20 GPa for 30 min was 25.5 μm, which is 16.5% smaller (40.0% smaller in volume) than that of the control group which was not exposed to high pressure. The inner organisms showed a further extent of plastic deformation. As a result, a gap appeared between the outer cover and the cytoplasm. A relationship has been obtained between the survival ratio and plastic deformation of spores of moss Venturiella caused by the application of ultra high pressure.

Original languageEnglish
Pages (from-to)362-368
Number of pages7
JournalHigh Pressure Research
Volume33
Issue number2
DOIs
Publication statusPublished - Jun 1 2013

Keywords

  • Venturiella
  • germination of protonema
  • high pressure tolerance
  • moss spores
  • plastic deformation

ASJC Scopus subject areas

  • Condensed Matter Physics

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    Ono, F., Nishihira, N., Sougawa, M., Hada, Y., Mori, Y., Takarabe, K., Saigusa, M., Matsushima, Y., Yamazaki, D., Ito, E., & Saini, N. L. (2013). Distortion of spores of moss Venturiella under ultra high pressure. High Pressure Research, 33(2), 362-368. https://doi.org/10.1080/08957959.2013.775281