Study of intraspecific diversity of Artemisia incana (L.) Druce in East Azerbaijan (original) (raw)
ISSN 1684–5315 © 2009 Academic Journals Review Phylogeny of Artemisia L.: Recent developments
2009
In this review, classification and phylogeny of genus Artemisia L. is discussed. Its centers of diversity lie in the temperate and cold temperate regions of the Eurasia, North America and Asia. Artemisia has two basic chromosome numbers, with ploidy levels x=9 and x=8. Chromosome number in diploid is most often 2n=18 or 16. The genus is divided into five large groups Absinthium DC., Artemisia L., Dracunculus Besser, Seriphidium Besser and Tridantatae (Rydb.) McArthur. Its phylogeny was based on the two hypothesized evolutionary trends, loss of fertility in the disc florets and loss of ray florets. Recently its molecular phylogeny based on internally transcribed spacer (ITS), externally transcribed spacer (ETS) regions of the DNA and chloroplast DNA suggested that the genus Artemisia is a monophyletic but it could not resolve the problem of infra-generic classification. This study revealed that there is need to search new genome regions to establish a natural classification based on ...
Review Phylogeny of Artemisia L.: Recent developments
2009
In this review, classification and phylogeny of genus Artemisia L. is discussed. Its centers of diversity lie in the temperate and cold temperate regions of the Eurasia, North America and Asia. Artemisia has two basic chromosome numbers, with ploidy levels x=9 and x=8. Chromosome number in diploid is most often 2n=18 or 16. The genus is divided into five large groups Absinthium DC., Artemisia L., Dracunculus Besser, Seriphidium Besser and Tridantatae (Rydb.) McArthur. Its phylogeny was based on the two hypothesized evolutionary trends, loss of fertility in the disc florets and loss of ray florets. Recently its molecular phylogeny based on internally transcribed spacer (ITS), externally transcribed spacer (ETS) regions of the DNA and chloroplast DNA suggested that the genus Artemisia is a monophyletic but it could not resolve the problem of infra-generic classification. This study revealed that there is need to search new genome regions to establish a natural classification based on ...
Phylogeny of Artemisia L.: Recent developments
2009
In this review, classification and phylogeny of genus Artemisia L. is discussed. Its centers of diversity lie in the temperate and cold temperate regions of the Eurasia, North America and Asia. Artemisia has two basic chromosome numbers, with ploidy levels x=9 and x=8. Chromosome number in diploid is most often 2n=18 or 16. The genus is divided into five large groups Absinthium DC., Artemisia L., Dracunculus Besser, Seriphidium Besser and Tridantatae (Rydb.) McArthur. Its phylogeny was based on the two hypothesized evolutionary trends, loss of fertility in the disc florets and loss of ray florets. Recently its molecular phylogeny based on internally transcribed spacer (ITS), externally transcribed spacer (ETS) regions of the DNA and chloroplast DNA suggested that the genus Artemisia is a monophyletic but it could not resolve the problem of infra-generic classification. This study revealed that there is need to search new genome regions to establish a natural classification based on modern molecular techniques.
A new combination and a new variety in Artemisia tridentata
The Great Basin naturalist, 1985
The combination Artemisia tridcntata Nutt. ssp. spicifonui.s (Osteihout) Goodrich & McArriiur comb, nov. is made. This high elevation taxon was originally described at the species level and more recently has generally been treated as a form of A. tridentata ssp. vaseijana. The subspecies designation is supported by its parallel nature to the other A. tridentata subspecies and by its relatively widespread and locally abundant populations. Also, a new variety of A. tridentata ssp. laseijana is proposed. Artemisia spicifonnis Osterhout was described (Osterhout 1900) from specimens collected at North Park, Jackson County (Larimer County on the label of Osterhout's type specimen, 2011), Colorado. Artemisia rothrockii Gray was described (Brewer et al. 1876) from specimens collected at Monache Meadows, Tulare County, California. Plants of these taxa are marked by large heads with about 10-18 flowers, by narrow spicate panicles, and by apically dentate or lobate leaves and often with some entire leaves, especially on the flowering stalks. They are mostly found at subalpine and alpine elevations. Both are members of the endemic North American subgenus Tridentatae (McArthur et al. 1981). Hall and Clements (1923) reduced A. rothrockii to a subspecies of A. tridentata Nutt., and they reduced A. spicifonnis to a synonym or a minor variation of A. tridentata ssp. rothrockii. They listed a distribution for this complex that included Washington to California and east to Wyoming and Colorado. However, they mentioned that the specimens from Colorado including the type specimen of A. spiciformis are more gray or white and
Systematic studies on some species of the genus Artemisia: biomolecular analysis
Plant Biosyst, 2003
The internal transcribed spacers (ITS) of the ribosomal DNA gene of 11 taxa of the genus Artermsia were sequenced and compared with other 14 species taken from GenBank. The aims of this study are to clarify phylogenetic relationships for 25 taxa within the genus Artemisia, and to highlight the phylogenetic position of some species of geobotanical interest from the Alps or from other European areas. The results support the monophyly of the genus Artemisia, and the presence of the five main clades, corresponding to the morphologically based sections, Absinthium, Artemisia, Seriphidium, Dracunculus and Tridentatae. Only A. annua and A. genfpi are not classified in the section in which they were traditionally included: A. annua is assigned to Seriphidium and not Artemisia, and A.genipi to Absinthium and not Artemisia. The basal structure of the tree differed in the 45 equally parsimonious MP trees, and thus appeared as a polytomy in the consensus tree. This does not allow us to completely solve the relationships among the clades. The molecular data are complementary with the morphological and biogeographical information and all are essential to draw validconclusions on the relative closeness of the various taxa.
Caryologia, 2021
Artemisia is one of the biggest genera in the family Asteraceae, with around 500-600 taxa at specific and sub-specific levels and organised in five subgenera. Due to the high number of taxa, a lot taxonomists are trying to solve the problem of its classification and phylogeny but its natural classification still has not been achieved.The aim of this study is to try to solve the problematic systematic relationship between three different Artemisia species growing in close proximity to each other in the light of morphological, karyological and molecular data.The roots, stems, leaves, flowers structures of the plant samples collected from different populations belong to these species were investigated within the framework of morphological studies. Additionally, the chromosome counts and karyotype analysises of these species were made and idiograms were drawn in the karyological studies. In the context of phylogenetic studies, ITS and trn regions of 22 individuals belonging to 3 taxa we...
Journal of Agricultural Science and Technology, 2019
Artemisia annua L. is an important medicinal plant used as an original source of artemisinin for treating malaria. Although there is a wide distribution of A. annua in Hyrcanian Areas (Mazandaran, Guilan, and Golestan Provinces in N Iran), no considerable effort has been made for diversity assessment. In this study, morphological, phytochemical, and molecular characterization of A. annua accessions in this area were assessed using 4 quantitative characteristics (height, fresh weight, dry weight, and trichome density), artemisinin content, and 15 ISSR primers. Using these traits, a high level of morphological, phytochemical and molecular diversity was revealed among A. annua accessions in the provinces (populations) of Hyrcanian Areas. At inter-population level, the highest value of artemisinin was observed in Mazandaran Province. Moreover, significant correlation between artemisinin content and trichome density was observed that could be useful for indirect selection of artemisinin ...
Scientific Papers. Series B, Horticulture. Vol. LVII, 2013
The paper presents chorological data concerning Artemisia alba Turra, Artemisia lerchiana Weber, and Artemisia tschernieviana Besser (Asteraceae) in Romania. These species of Artemisia are considered rare in Romania. Chorological data regarding Artemisia alba, A. lerchiana and A. tscherneviana distributions are presented using bibliographical information, data from different Herbaria of Romania and original data collected from fieldwork. An original chorological map using GEOCOD coordinates is presented for the first time.
Genetic diversity of Artemisia
The analysis of morphological variation and RAPD polymorphism distinguished populations of A. herba alba from populations of A. judaica and A. monosperma. Higher morphological diversity is found in A. herba alba compared to the other two species, but molecular data derived from RAPD polymorphism also indicated that A. herba alba is more polymorphic than the other two species. However, RAPD fingerprinting also indicated sharp polymorphism among populations of both A. judaica and A. monosperma. Geographic and local ecological variations related to elevation of the sites of the examined populations may be regarded to have played a role in the genetic diversity of the examined populations of Artemisia species in the study area. The results are important for future plans for sustainable conservation of medicinal plants in Saudi Arabia. However, extensive sampling of the examined Artemisia species populations is required, and more regional data should be obtained from other distribution areas.