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Phylogenetic Taxonomy of Artemisia L. Species from Kazakhstan Based On PROCEEDINGS OF THE LATVIAN ACADEMY OF SCIENCES. Section B, Vol. 72 (2018), No. 1 (712), pp. 29–37. DOI: 10.1515/prolas-2017-0068 PHYLOGENETIC TAXONOMY OF ARTEMISIA L. SPECIES FROM KAZAKHSTAN BASED ON MATK ANALYSES Yerlan Turuspekov1,5, Yuliya Genievskaya1, Aida Baibulatova1, Alibek Zatybekov1, Yuri Kotuhov2, Margarita Ishmuratova3, Akzhunis Imanbayeva4, and Saule Abugalieva1,5,# 1 Institute of Plant Biology and Biotechnology, 45 Timiryazev Street, Almaty, KAZAKHSTAN 2 Altai Botanical Garden, Ridder, KAZAKHSTAN 3 Karaganda State University, Karaganda, KAZAKHSTAN 4 Mangyshlak Experimental Botanical Garden, Aktau, KAZAKHSTAN 5 Al-Farabi Kazakh National University, Biodiversity and Bioresources Department, Almaty, KAZAKHSTAN # Corresponding author, [email protected] Communicated by Isaak Rashal The genus Artemisia is one of the largest of the Asteraceae family. It is abundant and diverse, with complex taxonomic relations. In order to expand the knowledge about the classification of Kazakhstan species and compare it with classical studies, matK genes of nine local species in- cluding endemic were sequenced. The infrageneric rank of one of them (A. kotuchovii) had re- mained unknown. In this study, we analysed results of sequences using two methods — NJ and MP and compared them with a median-joining haplotype network. As a result, monophyletic origin of the genus and subgenus Dracunculus was confirmed. Closeness of A. kotuchovii to other spe- cies of Dracunculus suggests its belonging to this subgenus. Generally, matK was shown as a useful barcode marker for the identification and investigation of Artemisia genus. Key words: Artemisia, Artemisia kotuchovii, DNA barcoding, haplotype network. INTRODUCTION (Bremer, 1994; Torrel et al., 1999). Due to the large amount of species in the genus, their classification is still complex Artemisia of the family Asteraceae is a genus with great and not fully completed. In earlier studies, the genus was economic potential and importance. Species of this genus subdivided into three subgenera (Poljakov, 1961; Kornkven have been used in many aspects of life throughout the et al., 1998). Absinthium and Tridentatae subg. were con- course of history (Lachenmeier, 2010; Petrovska, 2012). sidered as the sections of Artemisia and Seriphidum subg., They have been used as medicinal, food, and ornamental respectively. In more recent work already four subgenera plants (Weathers et al., 2011). A number of species have a were declared (Persson et al., 1974). Absinthium was pro- very important medicinal significance, especially Artemisia posed as a separate subgenus originated from the Artemisia annua L. (Klayman, 1985) and Artemisia absinthium L. subg. Based only on the capitula type and florets fertility, (Lachenmeier, 2010). One of the most common examples is five major groups described as subgeneric or sectional rank tarragon — A. dracunculus L. It is widespread in the wild (Absinthium, Artemisia, Dracunculus, Seriphidium, and Tri- across much of Eurasia and North America, and is culti- dentatae) are more or less constantly found in classic stud- vated for culinary and medicinal purposes. Its essential oils ies confirmed by molecular data (Torrel et al., 1999). Pre- are used as antibacterial agents; dry leaves are added as fla- vious phylogenetic studies on Artemisia showed monophyly vourings for meat and fish (Aglarova et al., 2008; Obolskiy of the genus and monophyly of the three main infrageneric et al., 2011). groups (Dracunculus, Seriphidium, Tridentatae), whereas subgenera Absinthium and Artemisia were described as Of the family Asteraceae, the tribe Anthemideae, genus Ar- polyphyletic (Watson et al., 2002). Classical subgeneric temisia is one of the largest genera (Bremer and Humphries, separation based only on morphological traits was rear- 1993; Oberpreiler et al., 1995). It includes about 500 spe- ranged, because in some cases it was not supported by the cies, which are distributed in five subgenera (Vallès and traditional classifications (Sanz et al., 2008; Tkach et al., McArthur, 2001). Species of this genus are widespread in 2008). Moreover, processes such as hybridisation, introgres- the Northern Hemisphere, particularly in Eurasian temper- sion, and polyploidisation are very common for these plants ate zone and North America, and in South and North Africa Proc. Latvian Acad. Sci., Section B, Vol. 72 (2018), No. 1. 29 and this makes understanding of their relations at the mo- genotyping of plant accessions using DNA barcoding. The lecular level even more difficult (Winward and McArthur, project combined efforts of local botanists and geneticists 1995). from biotechnology research organisations, botanical gar- dens, state nature parks, and reserves. In the last 20 years, Central Asia is a centre of the genus Artemisia origin and DNA barcoding has shown itself as a powerful and efficient one of the most important centres of its diversification tool for sample identification and phylogeny of new and (McArthur and Plummer, 1978; Wang, 2004). According to poorly studied species (Hebert et al., 2003; Hebert et al., previous studies, most of the Asian species belong to the 2005; Kress et al., 2017). Seriphidium subg. (Poljakov, 1961; Tkach et al., 2008). In Kazakhstan, there are around 80 species mostly growing in steppes and deserts (Pavlov et al., 1966). In general, en- MATERIALS AND METHODS demic and rare species of the genus Artemisia in Ka- zakhstan are poorly studied and their place in subgenera Materials sampling. Nine populations of Artemisia species classification is not well described. Only a few works were were collected from different places of central, south- dedicated to their biochemistry and economical importance eastern, eastern, and western regions of Kazakhstan (Table (Goryaev et al., 1962; Nikitina et al., 1964). The main aim 1, Fig. 1). For the reconstruction of intragenus topology se- of our study was to reveal the complex relations of subgen- quences of twenty one Artemisia taxa were taken from Gen- era in the genus Artemisia growing in Kazakhstan and com- Bank (https://www.ncbi.nlm.nih.gov/genbank/). pare results with traditional classifications based on both DNA extraction, amplification and sequencing. Three morphological traits (Poljakov, 1961) and molecular data plants from each population were chosen for the genetic (Watson et al., 2002; Sanz et al., 2008; Garcia et al., 2011). analysis. Total genomic DNA was extracted from dry leaf Another important objective was to determine the place of material according to the modified Dellaporta DNA extrac- one unranked local species — A. kotuchovii — in the sub- tion protocol (Dellaporta et al., 1983). Individual DNA genera classification. Additionally, we tested two different samples were analysed separately. PCR fragments were am- methods for phylogenetic taxonomy (joining and maximum plified for the maturase K gene of the chloroplast genome parsimony) and compared them to haplotype networking (matK) (Naeem et al., 2014). analysis. All PCR reactions were carried out in 16 µl volumes in a This work represents a new direction in the study of Ka- Veriti Thermo cycler (Applied Biosystems, Foster City, zakhstan native flora. In the past, only a few reports were CA, USA). One PCR reaction contained 4 mM of each related to the description of the genetic variation of local dNTP, 6.4 mM of primer mix, 1.6 U of Taq DNA po- flora (Adams et al., 1998; Turuspekov et al., 2002). There- lymerase and 80 ng of total genomic DNA. Protocols for fore, the study is an expansion of a research oriented to- PCR reactions were taken from Jun et al. (2012). Primers wards description of endemic, rare, and economically im- chosen for PCR included matK-F portant species of the country and part of cooperative (5’-CCTATCCATCTGGAAATCTTAG-3’) and matK-R nation-wide project (Turuspekov and Abugalieva, 2015) for (5’-GTTCTAGCACAAGAAAGTCG-3’) with annealing Table 1 LIST OF ARTEMISIA SPECIES COLLECTED IN KAZAKHSTAN AND THEIR GENBANK ACCESSIONS NUMBERS Region Species No. of collected plants GenBank accession number matK Central KZ A. radicans Kupr. 20 plants MG282056 (Karkaraly, Bol’shoe lake) Eastern KZ A. gmelinii Web. ex Stechm. 27 plants MG282059 (Valley of Kurchum River) Eastern KZ A. kotuchovii Kupr. 13 plants MG282057 (Southern Altai-Tarbagatai spine) Eastern KZ A. sublessingiana (Kell.) Krasch. ex Poljak. 20 plants MG282053 (Kurchum River) Southeastern KZ A. santolinifolia Turcz. ex Besser. 20 plants MG282055 (Almaty State Nature Reserve) Southeastern KZ A. scopaeformis* Ledeb. 20 plants MG282054 (Karatau State Nature Reserve) Southeastern KZ A. terrae-albae Krasch. 20 plants MG282052 (Altyn Emel National Park) Southeastern KZ A. transiliensis* Poljak. 21 plants MG282051 (Karatau State Nature Reserve) Western KZ A. gurganica Willd. 20 plants MG282058 (West Karatau) * indicates endemic species for the Kazakhstan territory (Pavlov et al., 1966). 30 Proc. Latvian Acad. Sci., Section B, Vol. 72 (2018), No. 1. Fig. 1. Collected sites of Artemisia species. One number denotes sampling point for the population of one species: 1 – A. radicans Kupr.; 2 – A. gmelinii Web. ex Stechm.; 3 – A. kotuchovii Kupr.; 4 – A. sublessingiana (Kell.) Krasch. ex Poljak.; 5 – A. santolinifolia Turcz. ex Besser.; 6 – A. scopaeformis* Ledeb.; 7 – A. terrae-albae Krasch.; 8 – A. transiliensis* Poljak.; 9 – A. gurganica Willd. * Indicates endemic plants for Kazakhstan territory (Pavlov et al., 1966). temperature 50 °C and expected sizes of amplicons 784 bp base. The genetic structure
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