Полиморфизм относительного содержания ДНК видов Selaginella borealis и Selaginella sanguinolenta

Skaptsov, M. V.; Smirnov, Sergey V.; Kechaykin, A. A.; Куцев, М. Г.; Ваганов, А. В.; Zhang, X. C.; Шмаков, А. И.

doi:10.14258/abs.v4.i4.4903

Cited by 3 publications

(5 citation statements)

References 3 publications

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“…nov., S. jacquemontii, S. nummularifolia, S. rossii, S. sajanensis, and S. sanguinolenta. Selaginella sanguinolenta group represents an ancient clade of Selaginellaceae, which have undergone a complex evolutionary history (Weststrand & Korall, 2016;Skaptsov & al., 2018;H.R. Zhang & al., 2020;M.H.…”

Section: ■ Discussionmentioning

confidence: 99%

“…The Selaginella sanguinolenta group is one of the most taxonomically notorious groups and has posed substantial challenges to taxonomists (X.C. Zhang & al., 2013;Fraser-Jenkins & al., 2015;Skaptsov & al., 2018;Irfan & al., 2021). In the S. sanguinolenta group whose monophyly has been well established (Weststrand & Korall, 2016; H.R.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Zhang & al., 2020), four to nine species have been recognized from the Himalayas to Siberia and the Russian Far East (X.C. Zhang & al., 2013; Fraser‐Jenkins & al., 2015; Skaptsov & al., 2018, 2020; Shalimov & al., 2019; Irfan & al., 2021). Morphologically, S. nummularifolia Ching, S. rossii (Baker) Warb., and S. sajanensis Stepanov & Sonnikova are well‐defined species, each having a relatively narrow distribution range (Stepanov & al., 2005; X.C.…”

Section: Introductionmentioning

confidence: 99%

“…It is widely distributed from the Himalayas to Russia (Siberia and Far East) (X.C. Zhang & al., 2013; Fraser‐Jenkins & al., 2015; Skaptsov & al., 2018, 2020; Shalimov & al., 2019), and has been shown to be nonmonophyletic in previous phylogenetic studies (Zhou & Zhang, 2015; Weststrand & Korall, 2016; M.H. Zhang & al., 2022).…”

Section: Introductionmentioning

confidence: 99%

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Integrative species delimitation of the Selaginella sanguinolenta (Selaginellaceae) group with description of a new species, S. baodongii

Zhang,

Shalimov

et al. 2023

TAXON

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Selaginella sanguinolenta group is widely distributed from the Himalayas to Siberia and the Russian Far East, including four to nine taxa. Despite progress in recent phylogenetic studies of the S. sanguinolenta group, the problem of species delimitation in this group remains. We revise the taxonomy of the S. sanguinolenta group based on an integrative approach considering morphological, molecular, and geographical evidence. The sampling for molecular analysis based on rbcL, psbA, and 26S nrDNA sequence data involved 71 individuals, covering the geographical range of this group. A total of 21 morphological traits from 103 specimens were explored using principal component analysis and linear discriminant analysis (LDA). The LDA results indicate that the combination of ventral leaf cilium length and ventral/dorsal leaf carinate characteristics enable a success rate of more than 90% in distinguishing between S. aitchisonii (western Himalayas to northern China), S. jacquemontii (western Himalayas to southwest China), and S. sanguinolenta (Russian Far East regions to northeast China). The phylogenetic analysis results of nuclear and plastid DNA markers further disclose the clear molecular differentiation. Selaginella nummularifolia, S. rossii, and S. sajanensis are well‐defined species based on morphological and molecular evidence with narrow distribution ranges respectively. Based on molecular and morphological evidence, in combination with distribution information, we finally recognize seven species in the S. sanguinolenta group, including a new species, S. baodongii sp. nov. from the bordering regions of Russia and China in northeast Asia.

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Section: ■ Discussionmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Integrative species delimitation of the Selaginella sanguinolenta (Selaginellaceae) group with description of a new species, S. baodongii

Zhang,

Shalimov

et al. 2023

TAXON

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“…Дупликацийпоследствий WGD не обнаружено в полностью секвенированных геномах плаунка Selaginella moellendorffii (Banks et al, 2011), антоцеротового мха Anthoceros angustus (Zhang et al, 2020), печеночного мха Marchantia polymorpha (Bow-man et al, 2017). Однако не исключено, что это древние палеополиплоиды -во всяком случае, в роде Selaginella известны как виды-диплоиды (n = 8-12), так и полиплоиды с n = 18-20, 30-32, 48-60 (Jermy et al, 1967;Takamiya, 1993;Skaptsov et al, 2018Skaptsov et al, , 2020. В роде Anthoceros по крайней мере один вид -A. punctatus -полиплоид (Proskauer, 1957;Dawes et al, 2020).…”

Section: Introductionunclassified

Tandem duplications, eupolyploidy and secondary diploidization – genetic mechanisms of plant speciation and progressive evolution

Rodionov¹

2022

Turczaninowia

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The article considers the genetic mechanisms of plant speciation. The importance of interspecific hybridization and polyploidy (whole genome duplication, WGD) as the main mechanisms of plant speciation is shown. There are three main ways of transformations of the hybrid genome associated with speciation. In the first way, the ploidy of the offspring does not change in comparison with the parents’ ploidy; the genomes of hybrid lines are stabilized through backcrosses and introgression without polyploidization. In the second way, the interspecial hybridization followed by whole genome duplication. Then, the initially unstable neopolyploid genome gradually passes into a stable eupolyploid state with the preservation of the polyploid number of chromosomes but with the diploid type of chromosome conjugation in meiosis. This is a widespread and rapid mechanism of plant speciation and genus formation in higher plants, which ensured the morphological and genetic isolation and adaptability of at least 15 % of modern species of higher plants. However, this is a path that usually does not lead to aromorphoses, this is speciation at an already achieved level of complexity. The third way of speciation is realized through dysploidy and secondary diploidization of the genome. In this case, the neopolyploid undergoes significant genomic rearrangements and loses most of the duplicated gene copies, its number of chromosomes is radically reduced. In different individuals of a species that has embarked on the path of stochastic genome fractionation and dysploidy, the initial genetic redundancy of various genome components multiplied after WGD is transformed in an unpredictably unique way, which leads to a radical increase in intraspecific genomic and epigenetic polymorphism and provides rich material for natural selection. It was also shown that in eupolyploids and paleopolyploids, a significant role in heritable adaptations to environmental conditions and in anatomical and morphological innovations is played by segment and tandem duplications not associated with WGD. Some of the paleopolyploids, which turned out to be evolutionarily progressive morphotypes, possessing aromorphoses with diploidized genomes, give rise to new phylogenetic branches, new suprageneric taxa. The article proposes to assign both genera carrying a unique two-chromosomal genome Zingeria and Colpodium (x = 2; 2n = 4, 8, 12) into subtribe Zingeriinae Rodionov, subtrib. nov. – Type: Zingeria P. A. Smirn. In addition, the accomodation of the genera Helictochloa and Molineriella into one subtribe Helictochloinae Röser et Tkach seems to us unreasonable from a genomic point of view, since the fundamental difference between representatives of these two genera is that Molineriella species carry an unusual 4-chromosomal genome, while speciation in genus Helictochloa(2n = 14 – 154) goes through the combinations of different 7-chromosome subgenomes, denoted by the letters E, L, B, C, M, V, G, U. Therefore, we consider it necessary to assign Molineriella into a monogenic subtribe MolineriellinaeRodionov, subtrib. nov. – Type: Molineriella Rouy.

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Plastid phylogenomic analyses of the Selaginella sanguinolenta group (Selaginellaceae) reveal conflict signatures resulting from sequence types, outlier genes, and pervasive RNA editing

Zhang

Xiang

Zhang

2022

Molecular Phylogenetics and Evolution

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Полиморфизм относительного содержания ДНК видов Selaginella borealis и Selaginella sanguinolenta

Cited by 3 publications

References 3 publications

Integrative species delimitation of the Selaginella sanguinolenta (Selaginellaceae) group with description of a new species, S. baodongii

Integrative species delimitation of the Selaginella sanguinolenta (Selaginellaceae) group with description of a new species, S. baodongii

Tandem duplications, eupolyploidy and secondary diploidization – genetic mechanisms of plant speciation and progressive evolution

Plastid phylogenomic analyses of the Selaginella sanguinolenta group (Selaginellaceae) reveal conflict signatures resulting from sequence types, outlier genes, and pervasive RNA editing

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