Evidence map›Paper›PMID 39934652›Full record

ArticleBMC plant biology2025

Phylogeny and taxonomy of the polyploid species that contain St genome (Triticeae; Poaceae) based on four nuclear DNA and three chloroplast genes.

Xiaoyang Pan, Tingting Zheng, Yuxin Zhao, Junhao Bao, Xing Fan, Lina Sha, Yinghui Li, Wei Zhu, Lili Xu, Yi Wang and 5 more

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Article in BMC plant biology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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5 · Who and what money

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15 authors.

Xiaoyang Pan *State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China.
Tingting Zheng *State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China.
Yuxin ZhaoState Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China.
Junhao BaoState Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China.
Xing FanState Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China.
Lina ShaCollege of Grassland Science and Technology, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China.
Yinghui LiState Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China.
Wei ZhuState Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China.
Lili XuState Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China.
Yi WangState Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China.
Yiran ChengState Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China.
Haiqin ZhangCollege of Grassland Science and Technology, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China.
Houyang KangState Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China.
Yonghong ZhouState Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China. zhouyh@sicau.edu.cn.
Dandan WuState Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China. 14646@sicau.edu.cn.

Funding

National Natural Science Foundation of China 32200180Science and Technology Department of Sichuan Province 2023NSFSC1995Science and Technology Department of Sichuan Province 2024NSFSC1327Special Projects of the Central Government in Guidance of Local Science and Technology Development 2023ZYD0088
6 · The paper itself

Abstract

backgroundThe genus Pseudoroegneria (Nevski) Á.Löve contributes the St genome for more than 60% of perennial Triticeae species. However, the strong dominant character of the St genome makes it challenging to distinguish each species and/or even genus based on single or combined morphological traits. Moreover, the phylogeny and taxonomy of the St-genome containing polyploid genera remain controversial.

resultsIn this study, we used nuclear and chloroplast DNA-based phylogenetic analyses to reveal the systematic relationships between the St-genome containing polyploid species. The maximum likelihood (ML) tree based on nuclear ribosomal internal transcribed spacer region (nrITS) and three single-copy nuclear genes data (Acc1 + Pgk1 + DMC1) showed that polyploid species with the St genome were separated into seven genera with StStHH, StStYY, StStYYHH, StStYYPP, StStYYWW, StStPP, and StStEE genome constitutions, moreover, the polyploid species in Caucasus, America, and Australia have independent polyploidization events. The ML tree for the chloroplast DNA fragments (matK + rbcL + trnL-trnF) displayed that the P genome served as a maternal donor of Kengyilia melanthera and K. dingqinensis from the Hengduan Mountains region, while the St or StY genome served as the maternal donor of other St-genome containing species. Herein, we reported the genomic constitution of Kengyilia tibetica, K. changduensis, and K. dingqinensis with the StStYYPP genome for the first time.

conclusionsThe St-genome-containing polyploid species should be treated as distinct genera according to different genome constitutions, and those species experienced independent allo-polyploidization events in different distribution regions and had two relatively independent maternal origins from the P or St/StY genomes. Besides, the Xp genome might have contributed to the unknown Y genome formation.

Indexed as

Genes, ChloroplastGenome, PlantPhylogenyPoaceaePolyploidyCell NucleusDNA, ChloroplastDNA, PlantGenes, PlantDNA, ChloroplastDNA, PlantChloroplast geneMolecular evolutionnrITSPhylogenyPolyploidSingle–copy nuclear genesSt genome

Identifiers

PMID39934652
PMCPMC11817382

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