Počet záznamů: 1

Seasonal changes of free amino acids and thermal hysteresis in overwintering heteropteran insect, Pyrrhocoris apterus

  1. 1.
    0361246 - BC-A 2012 RIV US eng J - Článek v odborném periodiku
    Košťál, Vladimír - Renault, D. - Rozsypal, Jan
    Seasonal changes of free amino acids and thermal hysteresis in overwintering heteropteran insect, Pyrrhocoris apterus.
    Comparative Biochemistry and Physiology A-Molecular & Integrative Physiology. Roč. 160, č. 2 (2011), s. 245-251 ISSN 1095-6433
    Grant CEP: GA ČR GA206/07/0269
    Výzkumný záměr: CEZ:AV0Z50070508
    Klíčová slova: diapause * cold tolerance * ice nucleation
    Kód oboru RIV: ED - Fyziologie
    Impakt faktor: 2.235, rok: 2011

    We sampled the adults monthly in the field during the cold season 2008-2009 and found active thermal hysteresis factors (THFs) in hemolymph of winter-sampled adults. The hysteresis between the equilibrium melting and freezing points ranged from 0.18°C to 0.30°C. The total free amino acid pool almost doubled during winter time. The sum concentrations of 27 free amino acids ranged between 35 – 40 mM in whole body water and 40 – 45 mM in hemolymph during December - February. Two amino acids, Pro and α-Ala most significantly contributed to the seasonal increase, while Gln showed the most dramatic seasonal decrease.
    Trvalý link: http://hdl.handle.net/11104/0198606