Počet záznamů: 1  

The ice nucleation activity of extremophilic algae

  1. 1. 0397593 - BU-J 2014 RIV GB eng J - Článek v odborném periodiku
    Kvíderová, Jana - Hájek, J. - Worland, M. R.
    The ice nucleation activity of extremophilic algae.
    Cryo-letters. Roč. 34, č. 2 (2013), s. 137-148. ISSN 0143-2044
    Grant CEP: GA AV ČR KJB601630808; GA AV ČR KJB600050708
    Institucionální podpora: RVO:67985939
    Klíčová slova: Ice nucleation * snow algae * lichen photobionts
    Kód oboru RIV: EF - Botanika
    Impakt faktor: 0.640, rok: 2013

    The ice nucleation activity was examined in snow algae, Chlamydomonas cf. nivalis and Chloromonas nivalis, and in lichen photobionts, Trebouxia asymmetrica, Trebouxia erici and Trebouxia glomerata. A mesophilic strain, Chlamydomonas reinhardtii, was used as a reference. The algae had lower ice nucleation activity, with the exception of Chloromonas nivalis contaminated by bacteria. The supercooling points of the snow algae were higher than those of lichen photobionts. The supercooling points of both, mesophilic and snow Chlamydomonas strains were similar. The lower freezing temperatures of the lichen algae may reflect either the more extreme and more variable environmental conditions of the original localities or the different cellular structure of the strains examined.
    Trvalý link: http://hdl.handle.net/11104/0228970