Gábor Sramkó

Gábor Sramkó
Hungarian Academy of Sciences | HAS · MTA-DE 'Lendulet' Evolutionary Phylogenomics Research Group

PhD

About

153
Publications
65,947
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Introduction
Gábor Sramkó currently works at the MTA-DE 'Lendulet' Evolutionary Phylogenomics Research Group, Hungarian Academy of Sciences based at the University of Debrecen, Hungary. Gábor does research in Phylogenetics, Ecology, Systematics (Taxonomy) and Botany. His current interest lays in molecular phylogenomics based on RAD-seq, but they also work with "classic" molecular phylogenetic approaches. The main aim of the research group he is the head of is to gain an understanding of the evolutionary history of plants and animals of the Eurasian steppe.
Additional affiliations
February 2017 - present
Hungarian Academy of Sciences
Position
  • Head of Department
Description
  • This is a 'Lendulet' research group maintained by the Hungarian Academy of Sciences (MTA) based at the University of Debrecen (DE) with a primary focus on evolutionary phylogenetics and phylogenomics.
June 2013 - January 2017
University of Debrecen
Position
  • PhD Student
February 2012 - June 2017
MTA-ELTE-MTM Ecology Research Group
Position
  • PostDoc Position

Publications

Publications (153)
Article
Full-text available
Introgressive hybridisation can pose a serious threat to endangered species which have an overlapping distribution such as in the case of two polecat species, Mustela eversmanii, and M. putorius, in Europe. The population size of steppe polecat is known to continuously shrink, whereas its sister species, the European polecat, is still somehow wides...
Article
Full-text available
The Hepatica section Angulosa consists of mainly tetraploid (2n = 28) species that are distributed disjunctly throughout Eurasia. Karyological evidence proves the hybrid origin of the polyploid species of this section. Hepatica transsilvanica is a member of this species group with a conspicuous distribution restricted to the Eastern Carpathians. Ba...
Article
Full-text available
Background and aims: The terrestrial orchid genus Epipactis has become a model system for the study of speciation via transitions from allogamy to autogamy, but close phylogenetic relationships have proven difficult to resolve through Sanger sequencing. Methods: We analysed with RAD-seq 108 plants representing 29 named taxa that together span th...
Article
In this study we analysed for the first time the phylogenetic relationships among the European Lethrus species based on mitochondrial (COI, 16S) and nuclear (H3, wingless) markers. The phylogenetic inference based on these genes indicated that the European Lethrus species form a monophyletic group with two main lineages. One of them is distributed...
Article
Pulsatilla (Anemoneae, Ranunculaceae) is sister to Anemone s.s. and contains ca 40 perennial species of considerable horticultural and medical importance. We sequenced 31 of those species, plus nine subspecies, two cultivars and six outgroups, for two nuclear regions (high-copy nrITS and low-copy MLH1) and three plastid regions (rbcL, accD–psaI, tr...
Article
Full-text available
The wings of butterflies exhibit a richness of colors and patterns unrivalled in the living world. Many of these colors are efficiently used and optimized in sexual communication. These colors may be generated by selective light absorption on pigments, by selective light reflection on photonic nanoarchitectures, or by a combination of the two. The...
Article
Different versions of Restriction‐site Associated DNA sequencing (RADseq) have become powerful and popular tools in molecular ecology. Although RADseq datasets are generally regarded as representative of the nuclear genome, reduced representation genomic libraries may also sample the organellar (i.e., the mitochondrial and, in the case of plants, t...
Article
Full-text available
Facultative sexual organisms combine sexual and asexual reproduction within a single life cycle, often switching between reproductive modes depending on environmental conditions. These organisms frequently inhabit variable seasonal environments, where favorable periods alternate with unfavorable periods, generating temporally varying selection pres...
Article
Full-text available
The Eurasian Steppe belt is one of the largest biomes in the Northern Hemisphere. We provide here a range-wide phylogeography of the flightless steppe beetle Lethrus apterus that inhabits the western part of the Steppe belt through the study of population-level variance of mitochondrial cytochrome oxidase I sequences and nuclear microsatellites. We...
Article
Full-text available
Anthropogenic environmental changes are affecting biodiversity and microevolution worldwide. Ectothermic vertebrates are especially vulnerable, since environmental changes can disrupt their sexual development and cause sex reversal, a mismatch between genetic and phenotypic sex. This can potentially lead to sex‐ratio distortion and population decli...
Article
Full-text available
One of the main goals of the EU Biodiversity Strategy for 2030 is to avoid further loss of biodiversity and to restore ecosystems. These efforts can be facilitated by compiling the main research topics related to conservation biology to provide new evidence for the most urgent knowledge gaps, and publicise it to researchers, research funders and po...
Article
For the effective control of an invasive species, gathering as much information as possible on its ecology, establishment and persistence in the affected communities is of utmost importance. We aimed to review the current distribution and characteristics of Sporobolus cryptandrus (sand dropseed), an invasive C4 grass species of North American origi...
Preprint
Different versions of Restriction-site Associated DNA sequencing (RADseq) have become powerful and popular tools in molecular ecology. Although RADseq datasets are regarded as representative of the nuclear genome, reduced representation genomic libraries may also sample the organellar (mitochondrial and, in case of plants, plastid) DNA. Extraction...
Preprint
Full-text available
Anthropogenic environmental changes are affecting biodiversity and microevolution worldwide. Ectothermic vertebrates are especially vulnerable, since their sexual development can be disrupted by environmental changes, which can cause sex reversal, a mismatch between genetic and phenotypic sex, potentially leading to sex-ratio distortion and populat...
Preprint
Full-text available
Facultative sexual organisms combine sexual and asexual reproduction within a single life cycle, often switching between reproductive modes depending on environmental conditions. These organisms frequently inhabit variable seasonal environments, where favourable periods alternate with unfavourable periods, generating temporally varying selection pr...
Article
Full-text available
The males of more than 80% of the Lycaenidae species belonging to the tribe Polyommatini exhibit structural coloration on their dorsal wing surfaces. These colors have a role in reinforcement in prezygotic reproductive isolation. The species-specific colors are produced by the cellular self-assembly of chitin/air nanocomposites. The spectral positi...
Preprint
Full-text available
For the effective control of an invasive species, gathering as much information as possible on its ecology, establishment and persistence in the subjected communities is of utmost importance. We aimed to review the current distribution and characteristics of Sporobolus cryptandrus (sand dropseed), an invasive C4 grass species of North American orig...
Article
Full-text available
The floristic composition of communities of apple and hawthorn forests with the participation of the rare species Gymnospermium altaicum (Pall.) Spach was studied in the Trans-Ili (Zailiyskiy) Alatau. The list of higher plants includes 156 species from 121 genera and 48 families. Most of them (84%) are herbaceous plants; there are 25 tree and shrub...
Article
Full-text available
Facultative clonality is associated with complex life cycles where sexual and asexual forms can be exposed to contrasting selection pressures. Facultatively clonal animals often have distinct developmental capabilities that depend on reproductive mode (e.g. negligible senescence and exceptional regeneration ability in asexual individuals, which are...
Article
Full-text available
At the westernmost distribution of the steppe herbaceous plant, Galatella villosa, in Hungary, Serbia and Ukraine, we recently observed intermediate specimens between this species and its close relative, G. linosyris.We were able to demonstrate the hybrid origin of these individuals by sequencing the biparentally inherited nuclear ribosomal interna...
Article
Full-text available
In the cold periods of Quaternary climatic fluctuations, many temperate species underwent severe range contractions, and their survival during these periods was associated with climatically more favorable regions, so-called glacial refugia, from which subsequent range expansions took place. In this regard, the relative roles of the Southern (“main”...
Article
Full-text available
European mustelids include the European polecat, Mustela putorius, and the steppe polecat, M. eversmanii. Both occur sympatrically in the Pannonian Basin, where M. eversmanii hungarica represents the westernmost part of the latter species and they allegedly hybridize. We investigated the morphological relationships in sympatric and allopatric popul...
Article
Full-text available
The Pannonian endemic species Vincetoxicum pannonicum was described from specimens collected in Hungary and occurs at only few locations. It is considered “vulnerable” according to the International Red List. The chromosome set was reported to be tetraploid, and the species was hypothesized to be an allotetraploid hybrid of the Balkan species V. fu...
Article
Multi-locus genetic identification of a newly discovered population reveals a deep genetic divergence in European blind mole rats (Rodentia : Spalacidae : Nannospalax).-Ann. Zool. Fen-nici 57: 89-98. A new population of blind mole rat (genus Nannospalax) was discovered near the town of Albertirsa in north-central Hungary. We used newly designed pri...
Article
Full-text available
Premise: Ferula sadleriana (Apiaceae) is a polycarpic, perennial herb with a very limited range and small populations. It is listed as "endangered" on the IUCN Red List of Threatened Species. Microsatellite markers can contribute to conservation efforts by allowing the study of the genetic structure of its shrinking populations. Methods and resul...
Article
Full-text available
Field studies have shown that waterbirds, especially members of the Anatidae family, are major vectors of dispersal by endozoochory for a broad range of plants lacking a fleshy fruit, yet whose propagules can survive gut passage. Widely adopted dispersal syndromes ignore this dispersal mechanism, and we currently have little understanding of what t...
Article
Himantoglossum adriaticum H. Baumann is a long-lived perennial orchid with an adriato-mediterranean distribution. The species-level separation of this species from the more geographically widespread H. hircinum has only recently been confirmed via a combination of molecular and morphometric techniques, which are further developed here. To provide a...
Article
Full-text available
The paper presents new records of 24 vascular plant species from 11 Eurasian countries. One taxon (Orobanche laxissima) is reported from Armenia; one (Epipactis condensata) from Azerbaijan; two (Phragmites americanus, Polygala multicaulis) from Belarus; one (Stipa cauca-sica) from Egypt; one (Puccinellia hauptiana) from Kyrgyzstan; three (Aquilegia...
Article
Full-text available
Premise: Gladiolus palustris (Iridaceae) is an endangered European perennial tetraploid herb with special conservation interest in the European Union. Microsatellite markers can serve as effective tools for the conservation genetics of this species. Methods and results: We utilized a 454 pyrosequencing approach to identify simple sequence repeat...
Preprint
Full-text available
Facultative clonality is associated with complex life cycles where sexual and asexual forms are exposed to contrasting selection pressures. Facultatively clonal animals often have divergent life histories that depend on reproductive mode (such as negligible senescence and exceptional regeneration ability in asexual individuals, and a lack of these...
Article
Full-text available
Birch mice (genus Sicista) represent an early diverging lineage of dipodid rodents with a wide geographic distribution and a cryptic lifestyle that makes the genus difficult to study. As a result, reconstructing the evolutionary phylogeny of the group remains incomplete. Here, we report the molecular phylogeny of the genus based on mitochondrial an...
Article
Full-text available
In the face of worldwide habitat loss, the role of human-shaped habitats in conserving biodiversity is becoming increasingly important. Due to their special cultural role, cemeteries can preserve parts of the native vegetation when the surrounding landscape becomes degraded. However, these special refuges are threatened by human encroachment and ch...
Article
Full-text available
Saker Falcons (Falco cherrug) with an unstriped tail are very unusual in the Pannonian region; the first author of this note is only aware of a single instance in his practice which includes the ringing of ca. 1700 birds here. One individual, which has a known pedigree of Hungarian parents where the female is without a striped tail, was included as...
Article
Nymphaea lotus L. is a tropical and subtropical species of waterlilies with an African distribution. A conspicuous satellite occurrence can be found in Europe in a thermal spring in NW Romania. This population (treated as var. thermalis (DC.) Tuzson) received much attention as a potential Tertiary relict in the flora of Europe, although its relict...
Book
Cemeteries are mostly perceived as undisturbed places where we can remember the deceased loved ones. From another perspective, they also represent historical and cultural values throughout the world. It has only recently been demonstrated that cemeteries are home to signifcant natural values, of which we have very little knowledge in general, and t...
Article
Abstract The central Asian narrow endemic species Oxytropis almaatensis is a highly endangered plant with a very restricted distribution in the Tian Shan Mountains. In this study, we present the basic conservation genetic characteristics of this species based on a DNA fingerprinting approach in order to provide yardsticks for official conservation...
Article
One of the author’s name of this article was incorrectly published as “Chris Wade”. This is now presented correctly in this article as “Christopher M. Wade”.
Article
Full-text available
Background and aims: Bee orchids (Ophrys) have become the most popular model system for studying reproduction via insect-mediated pseudo-copulation and for exploring the consequent, putatively adaptive, evolutionary radiations. However, despite intensive past research, both the phylogenetic structure and species diversity within the genus remain h...
Article
Full-text available
This report focuses on the faunal results of a mammalogical expedition, aimed to survey distribution, habitat preference, current density, threatening factors of birch mouse (Sicista) species inhabiting the Great Caucasus, as well as to assess their conservation status and to collect genetic samples for phylogenetic analyses. Sicista strandi was tr...
Data
Maximum likelihood phylogenetic tree reconstructed on haplotypes found in Caucasotachea vindobonensis populations. Values indicate branch supports
Data
Mismatch distribution calculated for four regional groups of Caucasotachea vindobonensis populations
Data
The potential distribution of Caucasotachea vindobonensis. Warmer colors indicate more suitable climatic conditions, while crosses indicate the subsample of presence points used for modeling (for more detail see material and methods)
Article
Full-text available
Existing data on the phylogeography of European taxa of steppic provenance suggests that species were widely distributed during glacial periods but underwent range contraction and fragmentation during interglacials into “warm-stage refugia.” Among the steppe-related invertebrates that have been examined, the majority has been insects, but data on t...
Article
Full-text available
Cikkünkben összesen 207 taxon 2005 és 2015 között gyűjtött adatát összegezzük, amelyeket a Tiszántúli flórajárás (Crisicum) középső részén gyűjtöttünk. Az adatsorban a flórajárásra nézve számos ritka és veszélyeztetett faj is szerepel (pl. Asplenium trichomanes, Marsilea quadrifolia, Sisymbrium polymorphum, Viola stagnina, Gentiana pneumonanthe, El...
Article
Full-text available
Elatine L. contains ca. 25 small, herbaceous, annual species distributed in ephemeral waters in both hemispheres. All species are amphibious and characterized by a high degree of morphological variability. The importance of seed morphology in Elatine taxonomy has been emphasized by many authors. The degree of seed curvature and seed coat reticulati...
Article
Elatine gussonei (Sommier) Brullo et al. is a rare freshwater plant previously assumed to be endemic to Lampedusa and the Maltase archipelago. Taxonomic uncertainties within the Elatine genus may have caused E. gussonei populations to be overlooked in the Mediterranean region. To clarify the distribution of E. gussonei, we reviewed Elatine specimen...
Article
Full-text available
Spiraea crenata was categorised as a species extinct from Hungary at the end of the 20 th century. This steppe-relic species was rediscovered in 2000 in a rural graveyard (Pusztamonostor). As a result of our recent survey of 294 Pannonian graveyards, we found further 12 localities of S. crenata. We also found 27 populations of further protected pla...
Article
The genus Eriosynaphe had a peculiar taxonomic history by having been considered also as member of the genus Johrenia in addition to originally having been established in Ferula. It has traditionally been regarded as monotypic and no previous molecular study examined its phylogenetic position. Based on sequences of the nrDNA ITS region, here we sho...