2014
Adaptive phylogeography: functional divergence between haemoglobins derived from different glacial refugia in the bank vole
KOTLÍK, Petr; Silvia MARKOVÁ; Libor VOJTEK; Antonín STRATIL; Vlastimil ŠLECHTA et. al.Základní údaje
Originální název
Adaptive phylogeography: functional divergence between haemoglobins derived from different glacial refugia in the bank vole
Autoři
KOTLÍK, Petr (203 Česká republika, garant); Silvia MARKOVÁ (203 Česká republika); Libor VOJTEK (203 Česká republika, domácí); Antonín STRATIL (203 Česká republika); Vlastimil ŠLECHTA (203 Česká republika); Pavel HYRŠL (203 Česká republika, domácí) a Jeremy B. SEARLE (840 Spojené státy)
Vydání
Proceedings of the Royal Society B-Biological Sciences, Anglie, Royal Society, 2014, 0962-8452
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
30105 Physiology
Stát vydavatele
Velká Británie a Severní Irsko
Utajení
není předmětem státního či obchodního tajemství
Impakt faktor
Impact factor: 5.051
Kód RIV
RIV/00216224:14310/14:00075557
Organizační jednotka
Přírodovědecká fakulta
UT WoS
000336784500010
EID Scopus
2-s2.0-84900539455
Klíčová slova anglicky
adaptation; antioxidative capacity; climate change; cysteine; oxidative stress; redox
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 20. 1. 2015 15:33, Ing. Andrea Mikešková
Anotace
V originále
Over the years, researchers have used presumptively neutral molecular variation to infer the origins of current species’ distributions in northern latitudes (especially Europe). However, several reported examples of genic and chromosomal replacements suggest that end-glacial colonizations of particular northern areas may have involved genetic input from different source populations at different times, coupled with competition and selection. We investigate the functional consequences of differences between two bank vole (Clethrionomys glareolus) haemoglobins deriving from different glacial refugia, one of which partially replaced the other in Britain during end-glacial climate warming. This allows us to examine their adaptive divergence and hence a possible role of selection in the replacement.We determine the amino acid substitution Ser52Cys in the major expressed b-globin gene as the allelic difference. We use structural modelling to reveal that the protein environment renders the 52Cys thiol a highly reactive functional group and we show its reactivity in vitro. We demonstrate that possessing the reactive thiol in haemoglobin increases the resistance of bank vole erythrocytes to oxidative stress. Our study thus provides striking evidence for physiological differences between products of genic variants that spread at the expense of one another during colonization of an area from different glacial refugia.