Origin of the Y genome in Elymus and its relationship to other genomes in Triticeae based on evidence from elongation factor G (EF-G) gene sequences

Sun, Genlou; Komatsuda, Takao

doi:10.1016/j.ympev.2010.03.037

Cited by 40 publications

(36 citation statements)

References 43 publications

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“…In both nDNA and cpDNA studies there is indication that there are many species of Pseudoroegneria that may have contributed the St genome to StY Elymus species, including P. spicata (Hodge et al, 2010;Liu et al, 2006;Mason-Gamer et al, 2010;Petersen et al, 2011;Sun & Komatsuda, 2010;. This is congruent with our NJ tree which has the StY Elymus species grouped with different Pseudoroegneria, while E. solandri (StYW) also shows some weak support for grouping within the P. spicata sub-clade (Figure 4).…”

Section: 4-pseudoroegneria Phylogeny Within the Triticeaesupporting

confidence: 79%

“…Studies of the RNA polymerase II (RPB2) gene (Sun et al, 2008; and the translation elongation factor-G (EF-G) gene (Sun et al, 2008;Sun & Komatsuda, 2010) clearly separated the St and Y genomes into distinct groups. The P. spicata (PI 232134) strain, found by Okito et al (2009) to be the possible donor to E. longearistatus, was included in the St groups during the study by , indicating that it is unlikely the St and Y genomes share a common origin.…”

Section: 3-relationship Of Elymus and Pseudoroegneriamentioning

confidence: 99%

“…Further studies, including those on the granule-bound starch synthase I (GBSSI) gene (Mason-Gamer, 2001;MasonGamer et al, 2010), the RPB2 genes (Sun et al, 2008;, ITS of nuclear rDNA (Yu et al, 2008), the EF-G genes (Sun & Komatsuda, 2010; phosphoenolpyruvate carboxylase (Pep-C) (Mason-Gamer et al, 2010) and ß-amylase (Mason-Gamer et al, 2010), have found two distinct clades within the St genome of Pseudoroegneria. In the GBSSI, RPB2, EF-G, and ß-amylase gene phylogenies, P. libanotica and P. tauri have very similar sequences and are sufficiently different from the other diploid Pseudoroegneria so as to form a separate clade (Mason-Gamer et al, 2010;Sun et al, 2008;Sun & Komatsuda, 2010;. This being said, ITS sequences have indicated that P. libanotica, P. tauri, P. spicata and P. strigosa ssp.…”

Section: 4-relationship Within Pseudoroegneriamentioning

confidence: 99%

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Phylogenetic analysis of the genus Pseudoroegneria and the Triticeae tribe using the rbcL gene

Gamache

Sun

2015

Biochemical Systematics and Ecology

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Phylogenetic Analysis of the Genus Pseudoroegneria and the Triticeae Tribe Using the rbcl Gene By Jacques GamachePseudoroegneria are diploid perennial grasses of the Triticeae tribe. The haplome "St" of Pseudoroegneria is shared with several important polyploid species such as Elymus, Kengyilia and, Elytrigia. Due to frequent hybridizations and complex genetic mechanisms, the relationships within Pseudoroegneria, and within the Triticeae, have been heavily disputed. Using the chloroplast rbcL gene I estimated the nucleotide diversity of 8 Pseudoroegneria species, and additionally examined the phylogenetic relationships within Pseudoroegneria and of Pseudoroegneria within the larger context of Triticeae. The estimates of nucleotide diversity indicated that P. tauri and P. spicata species had the highest diversity, while P. gracillima had the lowest. The phylogenetic analysis of Pseudoroegneria placed all P. spicata sequences into a clade separate from the other Pseudoroegneria, while the relationship of the other Pseudoroegneria species could not be determined. Due to the groupings of Pseudoroegneria with the polyploid Elymus, our results strongly support Pseudoroegneria as the maternal genome donor to Elymus. There was also weak support for the idea that P. spicata may be the maternal genome donor to the StH Elymus species.

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Section: 4-pseudoroegneria Phylogeny Within the Triticeaesupporting

confidence: 79%

Section: 3-relationship Of Elymus and Pseudoroegneriamentioning

confidence: 99%

Section: 4-relationship Within Pseudoroegneriamentioning

confidence: 99%

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Phylogenetic analysis of the genus Pseudoroegneria and the Triticeae tribe using the rbcL gene

Gamache

Sun

2015

Biochemical Systematics and Ecology

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“…Additionally, some studies (Helfgott and Mason-Gamer, 2004;Mason-Gamer, 2013) showed that North American Hordeum species were the diploid progenitors of the North American and Eurasian Elymus species. Other studies (Sun and Komatsuda, 2010;Fan et al, 2013) showed that the Hordeum H-genome from western China may have been a donor to Elymus, such as Hordeum bogdanii.…”

Section: Results and Discussion Nrits Treementioning

confidence: 99%

Phylogenetic analysis of Elymus (Poaceae) in western China

2015

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ABSTRACT. Elymus L. is often planted in temperate and subtropical regions as forage. Species in the genus have 5 allopolyploid genomes that are found in the grass tribe Triticeae. To determine the phylogenetic relationships in Elymus species from western China, we estimated phylogenetic trees using sequences from the nuclear ribosomal internal transcribed spacer and non-coding chloroplast DNA sequences from 56 accessions (871 samples) of 9 polyploid Elymus species and 42 accessions from GenBank. Tetraploid and hexaploid Elymus species from western China had independent origins, and Elymus species from the same area or neighboring geographic regions were the most closely related. Based on the phylogenetic tree topology, the St-and Y-genomes were not derived from the same donor and Y-genome likely originated from the H-genome of Hordeum species, or they shared the same origin or underwent introgression. The maternal genome of tetraploid and hexaploid Elymus species originated from species of Hordeum or Pseudoroegneria.

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“…The growing molecular evidences demonstrated that the Kengyilia species experienced an independent origin corresponding to geographical distribution of ancestor lineages and might have two phylogenetic maternal progenitors (Fan et al, 2012;Zeng et al, 2008Zeng et al, , 2010. Although the general relationship among Kengyilia species was drawn based on plastid and nuclear sequences and the origin of St and P genomes was confirmed in some cases (Fan et al, 2012;Liu et al, 2006;Zeng et al, 2008), the Y genome origin was confusing and remained mysterious (Mason-Gamer et al, 2010;Sun and Komatsuda, 2010;Sun et al, 2008). Therefore, the donor of the Y genome was under discussion.…”

Section: Introductionmentioning

confidence: 99%

Molecular evolution and diversity of dimeric alpha-amylase inhibitor gene in Kengyilia species (Triticeae: Poaceae)

Zeng¹,

Fan²,

Li³

et al. 2013

Gene

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Origin of the Y genome in Elymus and its relationship to other genomes in Triticeae based on evidence from elongation factor G (EF-G) gene sequences

Cited by 40 publications

References 43 publications

Phylogenetic analysis of the genus Pseudoroegneria and the Triticeae tribe using the rbcL gene

Phylogenetic analysis of the genus Pseudoroegneria and the Triticeae tribe using the rbcL gene

Phylogenetic analysis of Elymus (Poaceae) in western China

Molecular evolution and diversity of dimeric alpha-amylase inhibitor gene in Kengyilia species (Triticeae: Poaceae)

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