Year: 2009
Type: conference-paper
Abstract: Life on the earth often could survive under extreme environmental conditions. To determine their limit of their resistibility, a tardigrade (Milnesium tardigradum), pores and leaves of three kinds of moss, dormant sists of Artemia were exposed to three kinds of extreme conditions: vacuum (1 x 10(exp -3) Pa), nitrogen-exchanged air (1 Pa; > 99.5 %), and ultrahigh pressure (7.5 GPa). The ratio of budding in moss spores and survival ratio of moss leaves exposed to vacuum and nitrogen-exchanged air for 1 year was not different from that of the control groups exposed to the air even for 1 year. Twenty (20) % of spores survived against ultrahigh pressure (exposed for 12 hrs). Moss spores and leaves and dormant sists of Artemia showed stronger resisitivility against these extreme conditions than the 'tun' of Milnesium tardigradum. These animals may be a very good material to test the resistivity of the life on earth against extreme environmental conditions in space.
Authors: 三枝, 誠行, 西平, 直美, 進藤, 明彦, 藤井, 暁子, 南, 慶典, 中野, 弘子, 廣澤, 美樹, 森, 嘉久, 財部, 健一, 小野, 文久, 松島, 康, 山下, 雅道, Saigusa, Masayuki, Nishihira, Naomi, Shindo, Akihiko, Fujii, Akiko, Minami, Keisuke, Nakano, Hiroko, Hirosawa, Miki, Mori, Yoshihisa, Takarabe, Kenichi, Ono, Fumihisa, Matsushima, Yasushi, Yamashita, Masamichi
Language: English
Domain: Life Sciences
Open Access status: green
OpenAlex ID: W7044754056