Cell growth and morphology of Dictyostelium discoideum in space environment.

• Ohnishi Takeo

  Department of Biology, Nara Medical University, Kashihara, Nara 634,

• Takahashi Akihisa

  Department of Biology, Nara Medical University, Kashihara, Nara 634,

• Okaichi Kumio

  Department of Biology, Nara Medical University, Kashihara, Nara 634,

• Ohnishi Ken

  Department of Biology, Nara Medical University, Kashihara, Nara 634,

• Matsumoto Hideki

  Department of Biology, Nara Medical University, Kashihara, Nara 634,

• Takahashi Shimpei

  Space Experiment Department, National Space Development Agency of Japan, Tsukuba, Ibaraki 305,

• Yamanaka Hisashi

  frontiers Joint Research Program Department, Japan Space Utilization Promotion Center, Nishiwaseda, Shinjuku-ku, Tokyo 169, Japan

• Nakano Tamotsu

  Space Experiment Department, National Space Development Agency of Japan, Tsukuba, Ibaraki 305,

• Nagaoka Shunji

  Space Experiment Department, National Space Development Agency of Japan, Tsukuba, Ibaraki 305,

Bibliographic Information

Other Title

• Cell growth and morphology of Dictyoste

Abstract

Two strains of cellular slime mold Dictyostelium discoideum, a radiationsensitive mutant and the parental wild-type strain, were used to investigate the effects of microgravity and/or cosmic radiation on their morphology through the whole life span from spores to fruiting bodies for about 7 days in space shuttle of NASA. We found almost no effect of space environment on amoeba cell growth in both strains. It was also observed that almost the same number and shape of fruiting bodies in space compared to the control experiments on earth. These results suggest that there is little effect of microgravity and space radiation on germination, cell aggregation, cell differentiation and cell morphology in the cellular slime mold.

Journal

• Biological Sciences in Space

  Biological Sciences in Space 11 (1), 29-34, 1997

  Japanese Society for Biological Sciences in Space

Keywords

• morphology
• fruiting body
• Dictyostelium discoideum
• space radiation
• radiation sensitive mutant.

Details

• CRID: 1390001204433491456
• NII Article ID: 130004450425
• NII Article ID: 10002856578
• NII Book ID: AN10164806
• DOI: 10.2187/bss.11.29
• COI: 1:STN:280:DC%2BD3MnlvV2hsg%3D%3D
• ISSN: 1349967X
• ISSN: 09149201
• ISSN: http://id.crossref.org/issn/09149201
• NDL BIB ID: 4238433
• PubMed: 11540352
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4238433
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • PubMed
  • CiNii Articles
• Abstract License Flag: Disallowed