TY  - JOUR
A1  - Kiemel, Katrin
A1  - Gurke, Marie
A1  - Paraskevopoulou, Sofia
A1  - Havenstein, Katja
A1  - Weithoff, Guntram
A1  - Tiedemann, Ralph
T1  - Variation in heat shock protein 40 kDa relates to divergence in thermotolerance among cryptic rotifer species
JF  - Scientific reports
N2  - Genetic divergence and the frequency of hybridization are central for defining species delimitations, especially among cryptic species where morphological differences are merely absent. Rotifers are known for their high cryptic diversity and therefore are ideal model organisms to investigate such patterns. Here, we used the recently resolved Brachionus calyciflorus species complex to investigate whether previously observed between species differences in thermotolerance and gene expression are also reflected in their genomic footprint. We identified a Heat Shock Protein gene (HSP 40 kDa) which exhibits cross species pronounced sequence variation. This gene exhibits species-specific fixed sites, alleles, and sites putatively under positive selection. These sites are located in protein binding regions involved in chaperoning and may therefore reflect adaptive diversification. By comparing three genetic markers (ITS, COI, HSP 40 kDa), we revealed hybridization events between the cryptic species. The low frequency of introgressive haplotypes/alleles suggest a tight, but not fully impermeable boundary between the cryptic species.
Y1  - 2022
U6  - https://doi.org/10.1038/s41598-022-27137-3
SN  - 2045-2322
VL  - 12
IS  - 1
PB  - Macmillan Publishers Limited
CY  - London
ER  - 
TY  - GEN
A1  - Kiemel, Katrin
A1  - Gurke, Marie
A1  - Paraskevopoulou, Sofia
A1  - Havenstein, Katja
A1  - Weithoff, Guntram
A1  - Tiedemann, Ralph
T1  - Variation in heat shock protein 40 kDa relates to divergence in thermotolerance among cryptic rotifer species
T2  - Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe
N2  - Genetic divergence and the frequency of hybridization are central for defining species delimitations, especially among cryptic species where morphological differences are merely absent. Rotifers are known for their high cryptic diversity and therefore are ideal model organisms to investigate such patterns. Here, we used the recently resolved Brachionus calyciflorus species complex to investigate whether previously observed between species differences in thermotolerance and gene expression are also reflected in their genomic footprint. We identified a Heat Shock Protein gene (HSP 40 kDa) which exhibits cross species pronounced sequence variation. This gene exhibits species-specific fixed sites, alleles, and sites putatively under positive selection. These sites are located in protein binding regions involved in chaperoning and may therefore reflect adaptive diversification. By comparing three genetic markers (ITS, COI, HSP 40 kDa), we revealed hybridization events between the cryptic species. The low frequency of introgressive haplotypes/alleles suggest a tight, but not fully impermeable boundary between the cryptic species.
T3  - Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe - 1305 
Y1  - 2023
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-578635
SN  - 1866-8372
IS  - 1305
ER  - 
TY  - JOUR
A1  - Kiemel, Katrin
A1  - Gurke, Marie
A1  - Paraskevopoulou, Sofia
A1  - Havenstein, Katja
A1  - Weithoff, Guntram
A1  - Tiedemann, Ralph
T1  - Variation in heat shock protein 40 kDa relates to divergence in thermotolerance among cryptic rotifer species
JF  - Scientific Reports
N2  - Genetic divergence and the frequency of hybridization are central for defining species delimitations, especially among cryptic species where morphological differences are merely absent. Rotifers are known for their high cryptic diversity and therefore are ideal model organisms to investigate such patterns. Here, we used the recently resolved Brachionus calyciflorus species complex to investigate whether previously observed between species differences in thermotolerance and gene expression are also reflected in their genomic footprint. We identified a Heat Shock Protein gene (HSP 40 kDa) which exhibits cross species pronounced sequence variation. This gene exhibits species-specific fixed sites, alleles, and sites putatively under positive selection. These sites are located in protein binding regions involved in chaperoning and may therefore reflect adaptive diversification. By comparing three genetic markers (ITS, COI, HSP 40 kDa), we revealed hybridization events between the cryptic species. The low frequency of introgressive haplotypes/alleles suggest a tight, but not fully impermeable boundary between the cryptic species.
Y1  - 2022
U6  - https://doi.org/10.1038/s41598-022-27137-3
SN  - 2045-2322
VL  - 12
PB  - Springer Nature
CY  - London
ER  - 
TY  - GEN
A1  - Gurke, Marie
A1  - Vidal-Gorosquieta, Amalia
A1  - Pajimans, Johanna L. A.
A1  - Wȩcek, Karolina
A1  - Barlow, Axel
A1  - González-Fortes, Gloria M.
A1  - Hartmann, Stefanie
A1  - Grandal-d’Anglade, Aurora
A1  - Hofreiter, Michael
T1  - Insight into the introduction of domestic cattle and the process of Neolithization to the Spanish region Galicia by genetic evidence
T2  - Postprints der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe
N2  - Domestic cattle were brought to Spain by early settlers and agricultural societies. Due to missing Neolithic sites in the Spanish region of Galicia, very little is known about this process in this region. We sampled 18 cattle subfossils from different ages and different mountain caves in Galicia, of which 11 were subject to sequencing of the mitochondrial genome and phylogenetic analysis, to provide insight into the introduction of cattle to this region. We detected high similarity between samples from different time periods and were able to compare the time frame of the first domesticated cattle in Galicia to data from the connecting region of Cantabria to show a plausible connection between the Neolithization of these two regions. Our data shows a close relationship of the early domesticated cattle of Galicia and modern cow breeds and gives a general insight into cattle phylogeny. We conclude that settlers migrated to this region of Spain from Europe and introduced common European breeds to Galicia.
KW  - Haplogroups
KW  - Mitochondria
KW  - Cattle
KW  - Genomics
KW  - Domestic animals
KW  - Livestock
KW  - Single nucleotide polymorphisms
KW  - Neolithic period
Y1  - 2021
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-520875
SN  - 1866-8372
IS  - 4
ER  - 
TY  - JOUR
A1  - Gurke, Marie
A1  - Vidal-Gorosquieta, Amalia
A1  - Pajimans, Johanna L. A.
A1  - Wȩcek, Karolina
A1  - Barlow, Axel
A1  - González-Fortes, Gloria M.
A1  - Hartmann, Stefanie
A1  - Grandal-d’Anglade, Aurora
A1  - Hofreiter, Michael
T1  - Insight into the introduction of domestic cattle and the process of Neolithization to the Spanish region Galicia by genetic evidence
JF  - PLoS ONE
N2  - Domestic cattle were brought to Spain by early settlers and agricultural societies. Due to missing Neolithic sites in the Spanish region of Galicia, very little is known about this process in this region. We sampled 18 cattle subfossils from different ages and different mountain caves in Galicia, of which 11 were subject to sequencing of the mitochondrial genome and phylogenetic analysis, to provide insight into the introduction of cattle to this region. We detected high similarity between samples from different time periods and were able to compare the time frame of the first domesticated cattle in Galicia to data from the connecting region of Cantabria to show a plausible connection between the Neolithization of these two regions. Our data shows a close relationship of the early domesticated cattle of Galicia and modern cow breeds and gives a general insight into cattle phylogeny. We conclude that settlers migrated to this region of Spain from Europe and introduced common European breeds to Galicia.
KW  - Haplogroups
KW  - Mitochondria
KW  - Cattle
KW  - Genomics
KW  - Domestic animals
KW  - Livestock
KW  - Single nucleotide polymorphisms
KW  - Neolithic period
Y1  - 2020
U6  - https://doi.org/10.1371/journal.pone.0249537
SN  - 1932-6203
VL  - 16
IS  - 4
PB  - Public Library of Science
CY  - San Francisco
ER  -