Molecular phylogenetic study of the genus Colpodium sensu lato (Poaceae: Poeae)

Rodionov, A. V.; Kim, Elena S.; Носов, Н. Н.; Raiko, Mikhail; Мачс, Э. М.; Punina, Elisaveta O

doi:10.17816/ecogen6434-46

Cited by 10 publications

(6 citation statements)

References 21 publications

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“…In the nrDNA tree, they were together with Hyalopoa / Paracolpodium sister to a clade of Puccinellia / Sclerochloa and Coleanthus / Phippsia as similarly found in other studies (Fig. ) (Rodionov & al., ; Schneider & al., ; Soreng & al., ; Nosov & al., ). This suggests a reticulation process within Coleanthinae in way that the Puccinellia / Sclerochloa lineage has a hybrid background, namely Coleanthus / Phippsia ‐like nrDNA from its paternal ancestor while its maternal nrDNA from Catabrosa / Catabrosella was lost.…”

Section: Discussionmentioning

confidence: 97%

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Phylogenetic lineages and the role of hybridization as driving force of evolution in grass supertribe Poodae

Tkach

Schneider

Döring

et al. 2020

TAXON

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To investigate the evolutionary diversification and morphological evolution of grass supertribe Poodae (subfam. Pooideae, Poaceae) we conducted a comprehensive molecular phylogenetic analysis including representatives from most of its accepted genera. We focused on generating a DNA sequence dataset of plastid matK gene-3′trnK exon and trnL-trnF regions and nuclear ribosomal (nr) ITS1-5.8S gene-ITS2 and ETS that was taxonomically overlapping as completely as possible (altogether 257 species). The idea was to infer whether phylogenetic trees or certain clades based on plastid and nrDNA data correspond with each other or discord, revealing signatures of past hybridization. The datasets were analysed separately, in combination, by excluding taxa with discordant placements in the individual gene trees and with duplication of these taxa in a way that each duplicate has only one data partition (plastid or nrDNA). We used maximum likelihood, maximum parsimony and Bayesian approaches. Instances of severe conflicts between the phylogenetic trees derived from both datasets, some of which have been noted earlier, point to hybrid origin of several lineages such as the ABCV clade encompassing several subtribes and subordinate clades,

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Section: Discussionmentioning

confidence: 97%

“…(Figs. ) (Rodionov & al., ; Kim & al., ), whereas it shared plastid DNA characteristics with Hyalopoa (Tzvelev) Tzvelev ( H. pontica (Balansa) Tzvelev) and Paracolpodium (Tzvelev) Tzvelev ( P. altaicum (Trin.) Tzvelev, P. baltistanicum Dickoré; Figs.…”

Section: Discussionmentioning

confidence: 98%

Phylogenetic lineages and the role of hybridization as driving force of evolution in grass supertribe Poodae

Tkach

Schneider

Döring

et al. 2020

TAXON

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“…Nevskia. Later, we showed that this species is only distantly related to other species of the genus Catabrosella and differs from it in morphology, and therefore deserves to be separated into a new genus Nevskia [19,20]. Recently, Tkach et al came to a similar conclusion, proposing a new generic and specific name Hyalopodium araraticum (Lipsky) Röser & Tkach [33].…”

Section: Discussionmentioning

confidence: 79%

“…Despite this, Zingeria and Colpodium were included in the separate tribes Aveneae and Poeae, respectively [17]. Molecular phylogenetic studies have proven that Zingeria and Colpodium are closely related genera within the subtribe Coleanthinae of tribe Poeae [11,[18][19][20][21][22]. It was shown that another closely related to Zingeria taxon is Catabrosella araratica (Lipsky) Tzvelev [9,11,[18][19][20].…”

Section: Of 11mentioning

confidence: 99%

Intragenomic Polymorphism of the ITS 1 Region of 35S rRNA Gene in the Group of Grasses with Two-Chromosome Species: Different Genome Composition in Closely Related Zingeria Species

Rodionov

Gnutikov

Носов

et al. 2020

Plants

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Zingeria (Poaceae) is a small genus that includes Z. biebersteiniana, a diploid species with the lowest chromosome number known in plants (2n = 4) as well as hexaploid Z. kochii and tetraploid Z. pisidica, and/or Z. trichopoda species. The relationship between these species and the other low-chromosomes species Colpodium versicolor are unclear. To explore the intragenomic polymorphism and genome composition of these species we examined the sequences of the internal transcribed spacer 1 of the 35S rRNA gene via NGS approach. Our study revealed six groups of ribotypes in Zingeria species. Their distribution confirmed the allopolyploid nature of Z. kochii, whose probable ancestors were Colpodium versicolor and Z. pisidica. Z. pisidica has 98% of rDNA characteristic only for this species, and about 0.3% of rDNA related to that of Z. biebersteiniana. We assume that hexaploid Z. kochii is either an old allopolyploid or a homodiploid that has lost most of the rRNA genes obtained from Z. biebersteiniana. In Z. trichopoda about 81% of rDNA is related to rDNA of Z. biebersteiniana and 19% of rDNA is derived from Poa diaphora sensu lato. The composition of the ribotypes of the two plants determined by a taxonomy specialist as Z. pisidica and Z. trichopoda is very different. Two singleton species are proposed on this base with ribotypes as discriminative characters. So, in all four studied Zingeria species, even if the morphological difference among the studied species was modest, the genomic constitution was significantly different, which suggests that these are allopolyploids that obtained genomes from different ancestors.

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“…Total genomic DNA was isolated using the CTAB method (Doyle J.J., Doyle J.L., 1987), with minor modifications described previously (Rodionov et al, 2008). Amplification of the ITS region was performed using primers ITS 1P (Ridgway et al, 2003) and ITS 4 (White et al, 1990).…”

Section: Methodsmentioning

confidence: 99%

Polymorphism of ITS sequences in 35S rRNA genes in Elymus dahuricus aggregate species: two cryptic species?

Rodionov

Dobryakova²,

Носов³

et al. 2019

Vestn. VOGiS

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Nuclear ribosomal internal transcribed spacer (ITS) sequences were sequenced for 23 species and subspecies of Elymus sensu lato collected in Russia. The Neighbor-Net analysis of ITS sequences suggested that there are four ribotypes called Core Northern St-rDNA, Core Southern St-rDNA, Northern dahuricus St-rDNA and Southern dahuricus St-rDNA. The Core Southern variant of St-rDNA is closely related to rDNA of diploid Pseudoroegneria stipifolia (PI 313960) and P. spicata (PI 547161). The Core Northern St-rDNA is closely related to rDNA of P. cognata (PI 531720), a diploid species of Kyrgyzstan carrying StY variant of the St genome. The Core Northern St-rDNA is widespread among the Elymus species of Siberia and the Far East, including Yakutia and Chukotka. The Core Southern St-ribotype is typical of southern Elymus and Pseudoroegneria of the South Caucasus, Primorye, Pakistan, and South Korea. The Northern dahuricus St-ribotype and Southern dahuricus St-ribotype are derivatives of the Core Northern and Core Southern St-ribotypes, correspondingly. Both of them were found in all four studied species of the E. dahuricus aggregate: E. dahuricus Turcz. ex Griseb., E. franchetii Kitag., E. excelsus Turcz. ex Griseb. and Himalayan E. tangutorum (Nevski) Hand.-Mazz. In other words, there are at least two population groups (two races) of the Elymus dahuricus aggregate species that consistently differ in their ITS-sequences in Siberia, the Far East and Northern China. Each contains all morphological forms, which taxonomists now attribute either to different species of E. dahuricus aggr. (E. dahuricus sensu stricto, E. franchetii, E. tangutorum, E. excelsus) or subspecies of Campeiostachys dahurica (Turcz. ex Griseb.) B.R. Baum, J.L. Yang et C.C. Yen. At the moment it is unknown if there are any morphological differences between plants carrying either Northern or Southern dahuricus rDNA. Probably, they are cryptic species, but it is certain that if differences in morphology between the two races exist, they are not associated with signs that are now considered taxonomically significant and are used to separate E. dahuricus s. s., E. franchetii, E. tangutorum, and E. excelsus.

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Molecular phylogenetic study of the genus Colpodium sensu lato (Poaceae: Poeae)

Cited by 10 publications

References 21 publications

Phylogenetic lineages and the role of hybridization as driving force of evolution in grass supertribe Poodae

Phylogenetic lineages and the role of hybridization as driving force of evolution in grass supertribe Poodae

Intragenomic Polymorphism of the ITS 1 Region of 35S rRNA Gene in the Group of Grasses with Two-Chromosome Species: Different Genome Composition in Closely Related Zingeria Species

Polymorphism of ITS sequences in 35S rRNA genes in Elymus dahuricus aggregate species: two cryptic species?

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