This dataset contains the digitized treatments in Plazi based on the original journal article Tan, Lu, Hu, Meng, Wu, Dan-Dan, Cheng, Yi-Ran, Sha, Li-Na, Fan, Xing, Kang, Hou-Yang, Wang, Yi, Valdés-Florido, Ana, Zhang, Hai-Qin, Zhou, Yong-Hong (2025): Genome origin and phylogenetic relationships of Campeiostachys (Triticeae: Poaceae) based on nuclear and chloroplast DNA regions. Plant Ecology and Evolution 158 (3): 337-349, DOI: 10.5091/plecevo.153974
Abstract
Background and aims – Campeiostachys is an allohexaploid perennial genus of the Triticeae tribe (Poaceae). The allopolyploids of Triticeae are produced by interspecific hybridization of different genera. In this study, we investigate the genome origin of Campeiostachys and the relationships of some species based on phylogenetic analyses.
Material and methods – Two nuclear (Acc 1 and DMC 1) and two chloroplast (matK and rps 16) DNA regions of the species of Campeiostachys and its related genera were used for phylogenetic analyses.
Key results – The Acc 1 and DMC 1 sequences revealed that the genome composition of all Campeiostachys species in our study is StYH, suggesting that Campeiostachys may have originated by the natural hybridization between species with StY and H genomes, as no species with Y or HY genomes have been found in the wild. The results from the chloroplast regions indicated that the maternal donor of the Campeiostachys species contains the St subgenome. In addition, phylogenetic analysis of the nuclear sequences showed that C. purpuraristata always groups with the species of the C. dahurica complex in the St, Y, or H clade, distinct from other species in the genus. Also, C. calcicola, C. kamoji, and C. tsukushiensis var. transiens are distinct yet closely related species.
Conclusion – Campeiostachys species originated from the natural hybridization of the tetraploid species of Roegneria (StY) with the diploid species of Hordeum (H), with Roegneria (StY) acting as the maternal donor. Campeiostachys purpuraristata should be classified into the C. dahurica complex and treated as C. dahurica var. purpuraristata.
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