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Sonja Siljak-Yakovlev

Sonja Siljak-Yakovlev
Université Paris-Saclay, Orsay, France

PhD University Paris Saclay

About

362
Publications
99,413
Reads
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5,289
Citations
Citations since 2016
73 Research Items
2241 Citations
20162017201820192020202120220100200300
20162017201820192020202120220100200300
20162017201820192020202120220100200300
20162017201820192020202120220100200300
Additional affiliations
February 2020 - February 2020
French National Centre for Scientific Research · Ecology, Systematic, Evolution, (ESE - UMR 8079)
Position
  • Managing Director
October 2000 - September 2001
Univerzitet u Sarajevu
Position
  • Managing Director
Description
  • With my colleagues at the University of Sarajevo I initiated a program on biodiversity assessment and measures for the conservation of rare or endemic species which flora of Bosnia and Herzegovina is very rich.
January 1992 - March 2014
French National Centre for Scientific Research
Position
  • Managing Director
Education
December 1977 - June 1986
University of Sarajevo and University Paris Sud
Field of study
  • Biology

Publications

Publications (362)
Article
Full-text available
Centaurea species are well known as a source of phytopharmaceuticals having both beneficial and harmful influences on human health. Centaurea scabiosa L. is a wild edible plant used in Mediterranean cuisine in the Dalmatian region of Croatia. We have assessed the volatile oil’s chemical composition using GC/MS chromatography and its cytotoxic activ...
Article
Full-text available
Transcriptional silencing of 35S rDNA loci inherited from one parental species is occurring relatively frequently in allopolyploids. However, molecular mechanisms by which it is selected for transcriptional silencing remain unclear. We applied NGS, silver staining and bisulfite sequencing to study the structure, expression and methylation landscape...
Article
Full-text available
Vanilla planifolia, the species cultivated to produce one of the world’s most popular flavors, is highly prone to partial genome endoreplication (PE) which leads to highly unbalanced DNA content in cells. We report here first molecular evidence of PE at chromosome scale by the assembly and annotation of an accurate haplotype-phased genome of V. pla...
Article
Full-text available
The genus Ramonda includes three Paleoendemic and Tertiary relict species that survived in refugial habitats of the Balkan Peninsula (R. nathaliae and R. serbica) and the Iberian Peninsula (R. myconi). They are all “resurrection plants,” a rare phenomenon among flowering plants in Europe. Ramonda myconi and R. nathaliae are diploids (2n = 2x = 48),...
Article
Full-text available
Cotoneaster integerrimus represents a multiploid and facultative apomictic system of widely distributed mountain populations. We used flow cytometry to determine genome size, ploidy level, and reproduction mode variation of the Balkan populations, supplemented by analysis of nuclear microsatellites in order to address: (i) geographic distribution a...
Article
Full-text available
While polyploidy (whole genome multiplication) is generally considered rare in extant gymnosperms (with the exception of Ephedra, Ephedraceae), the occurrence of sporadic polyploid individuals belonging to various genera in the conifer family Cupressaceae has been reported in the literature. In addition, recent studies have revealed that polyploidy...
Article
Full-text available
Four spontaneous diploid taxa (2n = 2x = 16 chromosomes) of the genus Hedysarum L. were studied for the first time using molecular cytogenetic approach and a tetraploid one as an additional comparative control. This study follows the work undertaken on this genus as part of the preservation and valorization of fodder and pastoral phytogenetic resou...
Article
Full-text available
Edraianthus tarae, a taxonomically intricate stenoendemic plant species from the canyon of the river Tara (Montenegro), is reviewed using morphological and genome size data. Several morphological features distinguish this taxon from typical members of Edraianthus, which led to its segregation into its own genus, Protoedraianthus. Our formal morphom...
Article
Full-text available
Siljak-Yakovlev, S. 2020: Karyological study of diploid and tetraploid Crepis aurea (Asteraceae) [In Kamari, G., Blanché, C. & Siljak-Yakovlev, S. (eds), Mediterranean plant karyological data-30].-Fl. Medit. 30:456-460. http://dx.doi.org/10.7320/FlMedit30.456 Chromosome numbers and karyotypes were studied in eight populations of Crepis aurea from A...
Book
Chapter 18: Siljak-Yakovlev S., Pustahija F., Vičić-Bočkor V., Robin O. Molecular Cytogenetics (Fluorescence In Situ hybridization - FISH and Fluorochrome Banding): Resolving Species Relationships and Genome Organization. Fluorochrome banding (chromomycin, Hoechst, and DAPI) and fluorescence in situ hybridization (FISH) are excellent molecular cyto...
Article
Full-text available
Insights into genome size dynamics and its evolutionary impact remain limited by the lack of data for many plant groups. One of these is the genus Iris, of which only 53 out of c. 260 species have available genome sizes. In this study, we estimated the C-values for 41 species and subspecies of Iris mainly from the Eastern Mediterranean region. We c...
Article
Full-text available
Kerguelen Islands harbor a unique, probably very ancient flora with a high rate of endemism. However, the evolutionary history and characteristics of this flora still require investigation. This concerns in particular genome size and ploidy level variation, despite the evolutionary and ecological significance of those traits. Here we report the fir...
Article
Full-text available
The original article was published with missing information in Table 1. The complete Table 1 is now provided: this correction stands to correct the original article
Article
Full-text available
Coastal vegetation includes unique species with adaptations to the specific conditions of this environment, and in the Mediterranean region urban development of coastal areas has severely affected coastal ecosystems. Astragalus berytheus Boiss. & Blanche is a narrow endemic plant of the eastern Mediterranean coast, occurring in Lebanon and Palestin...
Article
Full-text available
Background Gene flow and polyploidy have been found to be important in Juniperus evolution. However, little evidence has been published elucidating the association of both phenomena in juniper taxa in the wild. Two main areas were studied in Spain (Eastern Iberian Range and Sierra de Baza) with both diploid and tetraploid taxa present in sympatry....
Article
Key message Discovery of the first case of allotriploid juniper in a wild population in the French Alps where the parental species occurs in sympatry. & Context Interspecific hybridization and polyploidy are important evolutionary phenomena in vascular plants. Natural hybrid-ization between species living in sympatry can sometimes occur. Less frequ...
Data
The genome size database of the Balkan flora is prepared using HTML/CSS/React client and PHP Laravel server technologies. It is available on-line (http://www.pmf.unsa.ba/gesdabaf) and will be regularly updated. To date, 52 works, apart from the contribution of the present paper, have been taken into account to build the database. At September 2019,...
Data
The genome size database of the Balkan flora is prepared using HTML/CSS/React client and PHP Laravel server technologies. It is available on-line (http://www.pmf.unsa.ba/gesdabaf) and will be regularly updated. To date, 52 works, apart from the contribution of the present paper, have been taken into account to build the database. At September 2019,...
Article
Full-text available
Ploidy was determined for twenty four (24) plants labeled as Juniperus chinensis cultivars at the Windsor Gardens, UK and revealed 16 were tetraploids (2n=4x=44), 7 diploids (2n=2x=22), and one triploid (2n=3x=33). nrDNA (ITS) and cp DNA sequencing found one of the diploids was actually a cypress; J. chinensis cv Savill Sentinel was Cupressus gigan...
Article
Full-text available
Geranium macrorrhizum is an aromatic plant native to the Southern Alps and the Balkan Peninsula. In Europe, it is increasingly cultivated for its ornamental flowers, as well as for use in aromatherapy and traditional herbal medicine due to its broad spectrum of biological activities. Essential oil of G. macrorrhizum is highly valued in perfumery an...
Article
Full-text available
The Balkan Peninsula is one of the 250 centres for plant diversity identified in the World, and one of the major biodiversity hotspot plant areas in Europe. Balkan flora has been well studied at the morphological, phytogeographical and taxonomic levels, but a scarce attention had been paid to genome size. This work consists of two distinct parts. T...
Article
Prunus africana is a multipurpose evergreen species endemic to Africa and an endangered species because of overexploitation. The great importance of this species resides particularly in the use of its bark against benign prostatic hyperplasia. As for most tropical trees and generally woody species, cytogenetic studies are scarce. Standard and molec...
Article
Full-text available
Prunus africana is a multipurpose evergreen species endemic to Africa and an endangered species because of overexploitation. The great importance of this species resides particularly in the use of its bark against benign prostatic hyperplasia. As for most tropical trees and generally woody species, cytogenetic studies are scarce. Standard and molec...
Experiment Findings
Full-text available
The nuclear DNA amount has been assessed, by flow cytometry, for 25 plant taxa indige-nous on Kefallinia Island. Genome size for all these taxa are here reported for the first time. Of these 25 taxa, 18 are Greek and Adriatic/Ionian endemics and 7 are more widely distributed, but of particular interest otherwise. The 2C DNA values ranged from 0.58...
Article
Full-text available
In this paper we present the nuclear DNA amount assessed by flow cytometry for 25 taxa from the indigenous flora of Cephalonia Island. In the panel of investigated species 18 taxa are endemics to Greece and to Adriatic/Ionian area and 7 more widely distributed, but with a special interest. The 2C DNA values ranged from 0.58 pg for Briza minor to 49...
Presentation
Full-text available
Introduction to the Symposium "Plant diversity and evolution in polyploid, dysploid, and hybrid complexes of the Mediterranean flora", organised by L. Peruzzi & S. Siljak-Yakovlev
Poster
Full-text available
The genus Dioscorea L. (Dioscoreaceae) include about 600 mostly dioecious and tuberous species, which are mainly widespread in tropical regions. Ten of them are cultivated and of agronomical importance. Dioscorea rotundata Poir., commonly call “white yam” and D. dumetorum (Kunth) Pax “yellow yam” are the most consumed in Cameroon. For highlighting...
Article
Full-text available
Juniperus xpfitzeriana is one of the most commonly cultivated junipers in the world. The origin of J. xpfitzeriana has remained speculative, but is this thought to be a hybrid of J. chinensis x J. sabina. nrDNA (ITS) and 4 chloroplast gene regions were sequenced from 14 J. xpfitzeriana cultivars from Windsor Gardens, UK, and compared with all Junip...
Article
Full-text available
Recent research suggests that the frequency of polyploidy may have been underestimated in gymnosperms. One notable example is in the conifer genus Juniperus, where there are already a few reports of polyploids although data are still missing for most species. In this study, we evaluated the extent of polyploidy in Juniperus by conducting the first...
Article
Full-text available
Polyploidy and natural hybridization are considered as two major evolutionary processes involved in plant speciation and diversification. In conifers, natural hybridization has been noticed to be more frequent than polyploidy. Nevertheless, a few cases of polyploidy have been reported in the genus Juniperus. In this genus, a new variety Juniperus s...
Article
Full-text available
The existence of two chromosome numbers (2n = 16 and 2n = 40) in Lygeum spartum is confirmed in the Algerian steppe populations of Oran region. Chromosome counts were established for 11 Algerian populations and three supplementary populations from Italy, Spain and Greece. The karyotypes were characterized by chromosome markers obtained using fluore...
Article
Full-text available
Flow cytometry has become the method of choice to measure the DNA content (genome size) in plants. Ease of sample preparation, fast acquisition, and accurate measurements have made the method popular in the domains of plant cell biology, systematics, evolution, genetics and biotechnology. Although the cell wall is a problem when isolating plant cel...
Article
Full-text available
Chromosome numbers and metaphase plates are given for eight species, seven from Bosnia and Herzegovina (Alnus × pubescens, Erythronium dens-canis, Genista tinctoria, Leucanthemum vulgare, Melittis melissophyllum, Orchis mascula, Stachys recta), and one species from F.Y.R.O.M. (Scorzonera austriaca). Chromosome counts and genome sizes are discussed.
Article
Full-text available
A new spontaneous wilding hybrid, Iris ×seminaturalis Niketić, Tomović & Šiljak-Yak. (I. ×germanica L. s.l. × I. reichenbachii Heuff.) from C Serbia was described and illustrated. The comparative analyses of the morphological characters and genome sizes were performed on I. ×seminaturalis and its parents. A new taxonomic review of the complex I. ×g...
Article
Full-text available
Additional analyses of trnS-trnG and nrDNA from specimens from Albania revealed the presence of J. sabina var. balkanensis. Careful chromatogram analysis of eight (8) polymorphic sites in nrDNA revealed that 6 of the 8 plants were polymorphic (RSRMYRK or RSRMARK) and apparently hybrids between type 1 GGACCCAG and type 2 (ACGACAGT) plants. Two plant...
Article
Full-text available
Additional analyses of trnS-trnG and nrDNA from specimens from Bosnia-Herzegovina, southern and central, Italy, Croatia and Macedonia revealed the presence of J. sabina var. balkanensis in these areas west of the previously known populations in Greece, Bulgaria and western Turkey. Careful chromatogram analysis of eight (8) polymorphic sites in nrDN...
Article
Full-text available
Additional analyses of trnS-trnG and nrDNA from specimens from Bosnia-Herzegovina, southern and central, Italy, Croatia and Macedonia revealed the presence of J. sabina var. balkanensis in these areas west of the previously known populations in Greece, Bulgaria and western Turkey. Careful chromatogram analysis of eight (8) polymorphic sites in nrDN...
Conference Paper
Full-text available
The Eastern Mediterranean Region (EMR) is rich in conifers taxa belonging to Abies, Cedrus, Juniperus and Cupressus genera, and are found in the Taurus Mountains of Turkey, and along the eastern Lebanese mountain range that stretches down to Syria. Climate and geological events played a key role in determining the spread and persistence of these c...
Article
Solidago litoralis (Asteraceae) is a psammophile plant endemic to the northern coasts of Tuscany, Italy. During time, different authors have considered it either as separate species, subspecies or variety of the European S. virgaurea, but few studies of experimental taxonomy have been investigating the relationship between these two taxa. Aim of th...
Article
Full-text available
Sisyrinchium is the largest genus of Iridaceae in the Americas and has the greatest amount of cytological data available. This study aimed at investigating how genomes evolved in this genus. Chromosome number, genome size and altitude from species of sect. Viperella were analyzed in a phylogenetic context. Meiotic and pollen analyses were performed...
Article
Full-text available
As a European endemic restricted to a few European countries, Geum bulgaricum is here treated as a “target species” or “species of European concern”. Although of great international significance, its distribution is insufficiently known. Based on several years of field studies and analyses of herbarium and literature data, we have determined that G...
Article
Full-text available
Epigenetic variation in natural populations with contrasting habitats might be an important element , in addition to the genetic variation, in plant adaptation to environmental stress. Here, we assessed genetic, epigenetic and cytogenetic structure of the three Lilium bosniacum populations growing on distinct habitats. One population was growing un...
Article
Centaurea species are used in eastern Mediterranean ethnopharmacology due to variety of bioactive compounds they comprise. Aim of this work was to characterize the Centaurea rupestris L. hydrodistilled essential oil chemical composition and test its biological activity: antimicrobial effect, antioxidant potential and inhibition of cholinesterases....
Data
- Dataset partitions for Maximum Likelihood (ML) and Bayesian Inference (BI) analyses.
Data
- Cluster analysis by Centroid Linkage method grouping taxa according to 2C genome size.
Article
Full-text available
Seven Centaurea species from Croatia (C. alba, C. calcitrapa, C. cristata, C. rhenana, C. rupestris, C. salonitana and C. solstitialis) belonging to five sections were studied. Chromosome numbers and metaphase plates are presented. All species studied here were found to be either diploid or tetraploid with the exception of C. salonitanawhich presen...
Article
Full-text available
Chromosome numbers and metaphase plates are given for seven species from Bosnia and Herzegovina (Anacamptis morio, Asphodelus albus, Dactylorhiza maculata, Digitalis grandiflora, Narcissus poeticus, Platantherabifolia, Polygonatum multiflorum), and one species from Croatia (Narcissus obsoletus) and Lebanon (Narcissus tazetta). Chromosome counts and...
Article
Full-text available
Premise of research. Odontites is an herbaceous genus composed of 27 species, mostly distributed around the Mediterranean Basin. As a first step toward studying species diversification within this genus, our goals were to (i) test previous hypotheses about phylogenetic relationships among species; (ii) assess whether the closely related genera Bart...
Article
Full-text available
The majority of the Origanum species are important medicinal plants as well as culinary herbs and have thus a great economic value. Some taxonomic issues are still pending within the genus and the cytogenetic studies about this genus are still very scarce. Therefore, studies concerning chromosome number and genome size can provide complementary dat...
Article
Full-text available
We present in this paper the first assessments, made by means of flow cytometry, of nuclear DNA amounts in one genus, 11 species, and one variety (including the first data from wild material in the case of one of the species), all of them from the family Asteraceae. Chromosome numbers are provided for three of these taxa, the presented material inc...
Article
Full-text available
In this study we showed that constitutive heterochromatin, GC-rich DNA and rDNA are implicated in chromosomal rearrangements during the basic chromosome number changing (dysploidy) in Reichardia genus. This small Mediterranean genus comprises 8–10 species and presents three basic chromosome numbers (x = 9, 8 and 7). To assess genome evolution and d...
Article
Full-text available
DNA remodelling during endoreplication appears to be a strong developmental characteristic in orchids. In this study, we analysed DNA content and nuclei in 41 species of orchids to further map the genome evolution in this plant family. We demonstrate that the DNA remodelling observed in 36 out of 41 orchids studied corresponds to strict partial end...
Article
The genus Cheirolophus constitutes one of the most striking cases of species radiation in Macaronesia, where it diversified into a lineage of ca. 20 endemic species at a rate that is amongst the fastest reported for oceanic islands. Whilst the cytogenetic dynamics of many of the Macaronesian Cheirolophus species have been comparatively well studied...
Article
This work presents the first phytochemical investigation of Geranium kikianum Kit Tan & G. Vold (Geraniaceae), a species endemic to the southern Peloponnese, Greece. The essential oil from aerial parts of the plant was isolated by hydrodistillation and its chemical composition characterized by GC-MS. A total of 26 compounds were identified, constit...
Article
The majority of the Origanum species are important medicinal plants as well as culinary herbs and have thus a great economic value. Some taxonomic issues are still pending within the genus and the cytogenetic studies about this genus are still very scarce. Therefore, studies concerning chromosome number and genome size can provide complementary dat...