Faculty of Science, Okayama University
Department of Research and Development, Industrial Technology Center of Okayama Prefecture
Department of Research and Development, Industrial Technology Center of Okayama Prefecture
Okayama University of Science
Okayama moss circle (OKAMOSS)
Okayama University of Science
Japan Aerospace Exploration Agency (JAXA)
Faculty of Science, Okayama University
出版者
宇宙航空研究開発機構宇宙科学研究所 (JAXA)(ISAS)
出版者（英）
Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA)(ISAS)
雑誌名
宇宙利用シンポジウム: 第27回: 平成22年度
雑誌名(英)
Space Utilization Research, Vol. 27 2011: Proceedings of The Twenty-seventh Space Utilization Symposium
The Twenty-seventh Space Utilization Symposium (January 24-25, 2011. Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA)(ISAS)), Sagamihara, Kanagawa Japan
抄録（英）
Mosses have high tolerance to desiccation and freezing. It is known that sugar accumulation enhance freezing tolerance. This study investigated the relation of sugar concentration to the desiccation tolerance. For this purpose, we used each 2 species from dry habitats (Hedwigia ciliata and Eurohypnum leptothallum) and wet habitats (Rhynchostegium riparioides and Plagiomnium vesicatum). Desiccation tolerance was represented as survival ratio after slow or fast desiccation. The survival ratio was determined by the method of using electrolyte leakage. After slow desiccation and under wet condition (control experiment), the sugar content of mosses was analyzed by HPLC. The mosses from dry habitats maintained high survival ratio after either slow or fast desiccation, whereas mosses from wet habitats showed relative low ratio after fast desiccation. The survival ratio of the mosses after fast desiccation corresponded not to one kind of sugar amount but also to the total sugar amount. Sucrose was the major sugar in all mosses. We have previously thought the large amount of one trisaccharide protect against desiccation in Bryum argenteum. However, the present data suggest the possibility that both sucrose and trisaccharide play the role of protectant.
糖の蓄積からみたコケ類の乾燥耐性
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