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Origin of the Rare Hybrid Genus ×Trisetokoeleria Tzvelev (Poaceae) According to Molecular Phylogenetic Data.

ABSTRACT: In our article, we analyzed new data on the origin of the hybrid genus ×Trisetokoeleria. According to the morphological criteria ×T. jurtzevii is a hybrid between Koeleria asiatica s. l. and Trisetum spicatum, ×T. taimyrica, and originated from Koeleria asiatica s. l. and Trisetum subalpestre, ×T. gorodkowii, a hybrid between Koeleria asiatica and Trisetum ruprechtianum. Later ×T. taimyrica was transferred to Koeleria. Parental taxa are prone to active hybridization themselves, thus, new methods of next-generation sequencing (NGS) were needed to clarify the relationships of these genera. For NGS we used the fragment 18S rDNA (part)-ITS1-5.8S rDNA (totally 441 accessions). We analyzed ITS1-5.8S rDNA-ITS2 region, trnL-trnF and trnK-rps16 from eight samples of the five species, using the Sanger method: ×Trisetokoeleria jurtzevii, ×T. taimyrica, Koeleria asiatica, Sibirotrisetum sibiricum (=Trisetum sibiricum), and Trisetum spicatum. We also studied the pollen fertility of ×Trisetokoeleria and its possible progenitors. Our data partly contradicted previous assumptions, based on morphological grounds, and showed us a picture of developed introgression within and between Koeleria and Trisetum. ×T. jurtzevii, a totally sterile hybrid formed rather recently. We can suppose that ×T. jurtzevii is a hybrid between K. asiatica and some Trisetum s. str. Species, but not T. spicatum. ×T. gorodkowii, a hybrid in the stage of primary stabilization; it has one unique ribotype related to T. spicatum s. l. The second parental species is unrelated to Trisetum ruprechtianum. ×T. taimyrica and is a stabilized hybrid species; it shares major ribotypes with the T. spicatum/T. wrangelense group and has a minor fraction of rDNA related to genus Deyeuxia s. l.

SUBMITTER: Gnutikov AA

PROVIDER: S-EPMC9782799 | biostudies-literature | 2022 Dec

REPOSITORIES: biostudies-literature

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Origin of the Rare Hybrid Genus ×Trisetokoeleria Tzvelev (Poaceae) According to Molecular Phylogenetic Data.

Gnutikov Alexander A AA Nosov Nikolai N NN Koroleva Tatiana M TM Punina Elizaveta O EO Probatova Nina S NS Shneyer Victoria S VS Rodionov Alexander V AV

Plants (Basel, Switzerland) 20221215 24

In our article, we analyzed new data on the origin of the hybrid genus ×Trisetokoeleria. According to the morphological criteria ×T. jurtzevii is a hybrid between Koeleria asiatica s. l. and Trisetum spicatum, ×T. taimyrica, and originated from Koeleria asiatica s. l. and Trisetum subalpestre, ×T. gorodkowii, a hybrid between Koeleria asiatica and Trisetum ruprechtianum. Later ×T. taimyrica was transferred to Koeleri ...[more]

PMID: 36559646

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Dataset Information

Origin of the Rare Hybrid Genus ×Trisetokoeleria Tzvelev (Poaceae) According to Molecular Phylogenetic Data.

Publications

Origin of the Rare Hybrid Genus ×<i>Trisetokoeleria</i> Tzvelev (<i>Poaceae</i>) According to Molecular Phylogenetic Data.

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