Genetic diversity and relationships among species of the genus Thymus L. (section Serpyllum)

Šoštarić, Ivan; Liber, Zlatko; Grdiša, Martina; Marin, Petar D.; Dajić-Stevanović, Zora; Šatović, Zlatko

doi:10.1016/j.flora.2012.06.018

Cited by 23 publications

(17 citation statements)

References 49 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Thymus praecox Opiz (Lamiaceae) is a pioneer plant species in badlands and surrounding (semi-)dry grasslands. The economically important genus Thymus is known for its genetic compatibility, and thus sympatrically occurring species can cross with each other (Sostaric et al, 2012). Population variability of tetraploid species in the section Serpyllum (e.g., T. praecox) is high in terms of morphological traits and chemical composition in secondary metabolites (Ali, Guetat, & Boussaid, 2012;Bączek, Pióro-Jabrucka, Kosakowska, & Węglarz, 2019;Dajic Stevanovic, Sostaric, Marin, Stojanovic, & Ristic, 2008;Lisi, Tedone, Montesano, Sarli, & Negro, 2011;Rota, Herrera, Martínez, Sotomayor, & Jordán, 2008).…”

Section: Thymus Praecoxmentioning

confidence: 99%

“…Population variability of tetraploid species in the section Serpyllum (e.g., T. praecox) is high in terms of morphological traits and chemical composition in secondary metabolites (Ali, Guetat, & Boussaid, 2012;Bączek, Pióro-Jabrucka, Kosakowska, & Węglarz, 2019;Dajic Stevanovic, Sostaric, Marin, Stojanovic, & Ristic, 2008;Lisi, Tedone, Montesano, Sarli, & Negro, 2011;Rota, Herrera, Martínez, Sotomayor, & Jordán, 2008). Reticulate evolution, that is, hybridization (allopolyploidization) between several diploid progenitor species, presumably caused the observed high variability (Jalas & Kaleva, 1970;Sostaric et al, 2012;Stahl-Biskup & Sáez, 2002). To the best of our knowledge, only a few studies focused on population genetics of species within the genus Thymus.…”

Section: Thymus Praecoxmentioning

confidence: 99%

“…To the best of our knowledge, only a few studies focused on population genetics of species within the genus Thymus . Population diversity, genetic relationships, and local adaptation have been studied using genetic markers (allozyme, AFLP, and RAPD; Ali et al, ; Echeverrigaray et al, ; López‐Pujol, Bosch, Simon, & Blanché, ; Sostaric et al, ). Moreover, T. praecox is also morphologically and genetically highly variable (Landergott, Naciri, Schneller, & Holderegger, ; Schmidt, ).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Desert‐like badlands and surrounding (semi‐)dry grasslands of Central Germany promote small‐scale phenotypic and genetic differentiation in Thymus praecox

Karbstein

Tomasello

Prinz

2019

Ecology and Evolution

View full text Add to dashboard Cite

Environmental heterogeneity among sites can generate phenotypic and genetic variation facilitating differentiation and microevolution of plant populations. Badlands are desert‐like, predominantly vegetation‐poor habitats often embedded in (semi‐)dry grasslands. The desert‐like conditions of badlands demand extreme adaptation of plants, that is, phenotypic modifications in short‐term and/or natural adaptation in long‐term. However, detailed knowledge is missing about both plant phenotypic and genetic differentiation in this unique and widely occurring habitat type. The present study focused on the largest known badlands systems in Central Europe located in the “Drei Gleichen” region, a designated nature conservation area in Central Germany. Locations were suitable for this study in terms of having co‐occurring badlands and (semi‐)dry grassland habitats (sites) occupied by the pioneer plant Thymus praecox. Here, we studied the environmental preferences, morphological and functional trait variation, and genetic variation using microsatellite markers of T. praecox. Results revealed significant, mainly site‐dependent environmental, phenotypic, and genetic differentiation. In general, individuals in badlands are shorter in height and have lower patch sizes (length × width), relative growth rates, and smaller stomata. The PCA additionally unveiled slightly increased leaf robustness, trichome density, decreased stomatal conductance, fewer females, and earlier phenology in badlands. We interpret differentiation patterns as adaptive responses to light, temperature, drought, and nutrient stress conditions supported by reviewed literature. Genetic differentiation was strongest between local badlands and grassland sites, and clearly weaker among locations and between sites (in total) as indicated by GST, AMOVA, PCoA, and population structure. Our study supports the importance of small‐scale microhabitat conditions as a driver of microevolutionary processes, and the population's need for sufficient phenotypic variation and genetic resources to deal with environmental changes. We demonstrated that badlands are an appropriate model system for testing plant response to extreme habitats and that more research is needed on these fascinating landscapes.

show abstract

Section: Thymus Praecoxmentioning

confidence: 99%

Section: Thymus Praecoxmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Desert‐like badlands and surrounding (semi‐)dry grasslands of Central Germany promote small‐scale phenotypic and genetic differentiation in Thymus praecox

Karbstein

Tomasello

Prinz

2019

Ecology and Evolution

View full text Add to dashboard Cite

show abstract

“…Moreover, different nuclear and plastid markers have been applied to evaluate phylogenetic relations and genetic variability within particular genera and tribes of MAP, including Thymus species of the section Serphyllum (Sostaric et al 2012), Echinacea (Kapteyn et al 2002), Mentha (Khanuja et al 2000) and Micromeria (Meimberg et al 2006) species, as well as tribes Rutae (Salvo et al 2008), Malvae (Garcia et al 2009) and some others.…”

Section: Challenges and Current Approaches In Selection And Breeding mentioning

confidence: 99%

Challenges and Decision Making in Cultivation of Medicinal and Aromatic Plants

Dajić-Stevanović

Pljevljakušić

2015

Medicinal and Aromatic Plants of the World

View full text Add to dashboard Cite

Cultivation of medicinal and aromatic plants (MAP) today is not only a promising alternative and counterpoint to wild collection, enabling preservation of natural genetic variability and survival of rare, endemic, vulnerable and endangered species, but also represents a powerful economy branch providing the high class quality raw material for pharmaceutical, cosmetic and the food industry. Domestication and cultivation of most of medicinal plants, usually conceived as a minor crops, face with many challenges on small, medium and large scale production, relating both cultivation technologies and market and prices fluctuations. Cultivated MAP material is increasingly preferred by the herbal industry, because it is easier to predict plant yield, quality and drug composition, especially when compared with wild harvested raw materials. In case of cultivated MAP material, the possibility of plant misidentification and adulteration is excluded. The profitability of cultivation of medicinal plants compete with profit achievable for standard field crops for which already exist a specialized machinery and a standard procedure for application of fertilizers and agrochemicals to control weeds, pests and diseases. For successful large scale cultivation of MAP, the high quality raw material should be produced using low input cultivation methods to be competitive at the international market and with plants collected from the wild. The most common issues with which the producers of medicinal plants encountered are the market, abundance and accessibility of wild populations, agro-environmental conditions, labor availability and costs, investments in machinery, post-harvest processing, and profitability of production. Superior genotypes are very important for profitable production of the high quality medicinal plants' row material. Out of all cultivated medicinal plant species, only a small percentage is clearly genetically defined and represented on the seed market in term of variety. Similarly to the other crops, traditional breeding methods, as well as biotechnological procedures and selection assisted by molecular markers are applied in development of new varieties and Mapping of genes and specific DNA sequences involved in biosynthesis of particular metabolite classes seems to be a future challenge in MAP breeding programs. Most of actual research is focused on genetic variability among different taxa of medicinal plants using several types of DNA markers, including restriction fragment length polymorphism (RFLP), amplified fragment length polymorphic DNA (AFLP), random amplified polymorphic DNA (RAPD), cleavage amplified polymorphic sequence (CAPS), simple sequence repeat (SSR), and sequence characterized amplified region (SCAR) markers. Although the primary target for trait manipulation in medicinal plants is the content of active compounds, for development as crops, basic agronomic characters related to uniformity, stability, growth and development, and resistance to biotic and abiotic stresses, must also be impro...

show abstract

“…Over the past 3 decades, different types of DNA marker techniques have been developed and used for many plant species, but few of these molecular techniques have been used for this genus. The techniques of inter-simple sequence repeat (ISSR) and random amplified polymorphic DNA markers (RAPD) have been used in genetic characterization (Trindade et al, 2009), while amplified fragment length polymorphism (AFLP) and isozymes have been utilized in determining the genetic diversity, relationship, and population structure of the genus Thymus (Ali et al, 2012;Sostaric et al, 2012). However, the ISSR, AFLP, and RAPD techniques produce mainly dominant markers, which do not differentiate homozygotes from heterozygotes.…”

mentioning

confidence: 99%

Microsatellites for genetic and taxonomic research on thyme (Thymus L.)

Karaca¹,

İnce²,

Aydın³

et al. 2015

Turk J Biol

View full text Add to dashboard Cite

IntroductionResearchers in the food industry, academia, and medicine are increasingly interested in medicinal and aromatic plant species in the families Myrtaceae, Lauraceae, and Lamiaceae. Thyme (Thymus L.) is one of the most important genera in the family Lamiaceae. The number of species within this genus is still debatable but it includes about 400 species, many of which are native to the Mediterranean region (Morales, 2002). Based on morphological features, species in the genus Thymus were divided into 2 main subgenera, Thymus and Coridothymus, and 8 sections, which consisted of

show abstract

Genetic diversity and relationships among species of the genus Thymus L. (section Serpyllum)

Cited by 23 publications

References 49 publications

Desert‐like badlands and surrounding (semi‐)dry grasslands of Central Germany promote small‐scale phenotypic and genetic differentiation in Thymus praecox

Desert‐like badlands and surrounding (semi‐)dry grasslands of Central Germany promote small‐scale phenotypic and genetic differentiation in Thymus praecox

Challenges and Decision Making in Cultivation of Medicinal and Aromatic Plants

Microsatellites for genetic and taxonomic research on thyme (Thymus L.)

Contact Info

Product

Resources

About