A broadly sampled 3-loci plastid phylogeny of Atraphaxis (Polygoneae, Polygonoideae, Polygonaceae) reveals new taxa: I. Atraphaxis kamelinii spec. nov. from Mongolia

Abstract

Maximum Likelihood (ML) and Bayesian analyses (BI) applied for 3-plastid loci (cpDNA trnL(UAA) intron, trnL–trnF IGS, and rpl32–trnL(UAG) IGS regions) / 65 tips matrix resulted in preliminary phylogenetic reconstruction of the genus Atraphaxis. In combination with the morphological data the obtained phylogeny appears sufficient for recognition of challenging taxonomic entities. We found that a collection of Atraphaxis from the Dzungarian Gobi, which appears to be phylogenetically related to A. pungens, is morphologically different from the latter by the predominantly dimerous perianth and gynoecium, shorter outer perianth segments, and the absence of the spiny shoots. It also differs from all other species of Atraphaxis that occur in Mongolia and neighboring countries. As a result, we described the novel endemic species Atraphaxis kamelinii O.V.Yurtseva sp. nov. More investigations are necessary to fully understand the origin of the newly described species.

Application of rps16 Intron and trnL-trnF Intergenic Spacer Sequences to Identify Rengas clone Riau

“…In addition, due to variation caused by mutation on the trnL-trnF intergenic spacer, Adrienne et al (2015) can identify a species in genus Lophophora. A new species of Atraphaxis is also determined based on the trnL-trnF intergenic spacer (Yurtseva et al, 2016).…”

“…The hypervariable non coding region, like the rps16 intron and the trnL-trnF intergenic spacer, is easier and preferred to be used for identification and discovery of a new species (Kress et al, 2009;Adrienne et al, 2015;Yurtseva et al, 2016). Therefore, this study reports the application of 2 DNA barcodes, i.e.…”

“…The lengths of the trnL-trnF intergenic spacer on tobacco, rice, and Marchantia, respectively, are 438 bp, 324 bp, and 158 bp (Taberlet et al, 1991). The the trnL-trnF intergenic spacer region has been used to discriminate the species in genus Lophophora (Adrienne et al, 2015), to determine a new species of Atraphaxis (Yurtseva et al, 2016), to analyze the phylogenetic relationships within Pandanaceae (Buerki et al, 2012) and ferns (de Groot et al, 2011), to identify the tea plants which are used to produce commercial…”

“Noah’s Ark” Project: Interim Results and Outlook for Classic Collection Development

“…According to the results of an extensive revision of the genus Atraphaxis , several new taxa of the Polygonaceae family have emerged: Atraphaxis kamelinii species from Mongloia [146], Bactria genus with B. lazkovii species from Kygryzstan [147], and the Persepolium genus [148].…”

On biodiversity and conservation of the Iris hexagona complex (Phaeiris, Iridaceae)

“…Modern phylogenetic methods, especially molecular approaches, have made it possible to identify many cryptic, unrecognized, or simply forgotten taxonomic entities (e.g., Mavrodiev et al 2012 a , b , c , 2013, 2014, 2015 a , Yurtseva et al 2016 a , b , among others), some of which are potentially in need of conservation attention. Such new analyses have also provided new information on the prevalence of previously unrecognized areas of endemism (Mavrodiev et al 2012 a , b ) as well as on the importance of environmental variables that may be fully congruent with the observed biodiversity (Mavrodiev et al 2015 b ).…”