FN Archimer Export Format
PT J
TI Genetic diversity and inter-specific relations of western Mediterranean relic Abies taxa as compared to the Iberian A. alba
BT 
AF DERING, Monika
   SEKIEWICZ, Katarzyna
   BORATYNSKA, Krystyna
   LITKOWIEC, Monika
   ISZKULO, Gregorz
   ROMO, Angel
   BORATYNSKI, Adam
AS 1:1;2:1;3:1;4:1;5:1,2;6:3;7:1;
FF 1:;2:;3:;4:;5:;6:;7:;
C1 Polish Acad Sci, Inst Dendrol, PL-62035 Kornik, Poland.
   Univ Zielona Gora, Fac Biol Sci, PL-65516 Zielona Gora, Poland.
   CSIC, Inst Bot, Barcelona, Spain.
C2 POLISH ACAD SCI, POLAND
   UNIV ZIELONA GORA, POLAND
   CSIC, SPAIN
IF 1.472
TC 28
UR https://archimer.ifremer.fr/doc/00291/40224/82999.pdf
LA English
DT Article
CR IMAGES 1-MD101
BO Marion Dufresne
DE ;A. pinsapo;A. alba;Genetic diversity;Phylogeography;Gibraltar Strait;West Mediterranean firs
AB Several Abies species are currently present in the Mediterranean region and most of them are endemic taxa and tertiary relicts. Using six nuclear microsatellites, we studied the genetic structure and interspecific relationships among West Mediterranean firs, A. pinsapo (Spain), A. maroccana and A. tazaotana (Morocco). Based on the hypothesis that A. pinsapo could historically exchange genes with A. alba growing in the Pyrenees via secondary contact, we investigated the level of genetic admixture between these species using a Bayesian approach. The studied populations showed moderate genetic diversity (mean H-E=0.598) and a high level of genetic differentiation (F-ST=0.225) that was especially pronounced between A. alba and the African firs. All populations experienced a strong bottleneck effect that was likely induced by climatic changes occurring in the West Mediterranean during the last glacial cycle and the Holocene. According to Bayesian clustering, both African taxa grouped together in a single cluster, the two A. pinsapo populations formed a second cluster, and two additional clusters were detected within A. alba. Our results indicate that A. tazaotana is genetically very close to A. maroccana, and hence these two taxa should probably not be considered as separate species. We found no genetic admixture between A. pinsapo and A. alba and only minor between A. pinsapo and the African fir populations suggesting an isolation effect of the Gibraltar Strait. Current limited distributions of firs in the Mediterranean region together with changing climate may lead to further deterioration of the genetic diversity levels. Hence, future efforts should focus on monitoring the demography and genetic threats to existing populations.
PY 2014
PD JUN
SO Flora
SN 0367-2530
PU Elsevier Gmbh, Urban & Fischer Verlag
VL 209
IS 7
UT 000339695100008
BP 367
EP 374
DI 10.1016/j.flora.2014.03.011
ID 40224
ER

EF