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Tibet as a potential domestication center of cultivated barley of China.

Ren X, Nevo E, Sun D, Sun G - PLoS ONE (2013)

Bottom Line: Our results showed that Tibetan wild barley distinctly diverged from Southwest Asian (Near East) wild barley, that Central Asian wild barley is related to Southwest Asian wild barley, and that Chinese domesticated barley shares the same haplotypes with Tibetan wild barley.Phylogenetic analysis showed a close relationship between Chinese domesticated barley and the Tibetan wild barley, suggesting that Tibetan wild barley was the ancestor of Chinese domesticated barley.Our results favor the polyphyletic origin for cultivated barley.

View Article: PubMed Central - PubMed

Affiliation: College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China.

ABSTRACT
The importance of wild barley from Qinghai-Tibet Plateau in the origin and domestication of cultivated barley has long been underestimated. Population-based phylogenetic analyses were performed to study the origin and genetic diversity of Chinese domesticated barley, and address the possibility that the Tibetan region in China was an independent center of barley domestication. Wild barley (Hordeum vulgare ssp. spontaneum) populations from Southwest Asia, Central Asia, and Tibet along with domesticated barley from China were analyzed using two nuclear genes. Our results showed that Tibetan wild barley distinctly diverged from Southwest Asian (Near East) wild barley, that Central Asian wild barley is related to Southwest Asian wild barley, and that Chinese domesticated barley shares the same haplotypes with Tibetan wild barley. Phylogenetic analysis showed a close relationship between Chinese domesticated barley and the Tibetan wild barley, suggesting that Tibetan wild barley was the ancestor of Chinese domesticated barley. Our results favor the polyphyletic origin for cultivated barley.

Show MeSH
Circle polygenetic showed the phylogenetic relationships among 45 wild barley of Southwest Asia, 18 wild barley of Central Asia, 20 wild barley of Tibet (★ ) and 20 cultivated barley from China () of Nam-1 gene (A) and HTL gene (B).
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pone-0062700-g003: Circle polygenetic showed the phylogenetic relationships among 45 wild barley of Southwest Asia, 18 wild barley of Central Asia, 20 wild barley of Tibet (★ ) and 20 cultivated barley from China () of Nam-1 gene (A) and HTL gene (B).

Mentions: Phylogenetic analyses were also performed to reveal the relationships among all accessions from the four populations. The Nam-1 gene tree showed that a majority of accessions of Chinese cultivated barley were grouped together with Tibetan wild barley (Fig. 3A). The phylogenetic tree based on the HTL gene clearly grouped all Chinese cultivated barley with all Tibetan wild barley (Fig. 3B).


Tibet as a potential domestication center of cultivated barley of China.

Ren X, Nevo E, Sun D, Sun G - PLoS ONE (2013)

Circle polygenetic showed the phylogenetic relationships among 45 wild barley of Southwest Asia, 18 wild barley of Central Asia, 20 wild barley of Tibet (★ ) and 20 cultivated barley from China () of Nam-1 gene (A) and HTL gene (B).
© Copyright Policy
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC3643926&req=5

pone-0062700-g003: Circle polygenetic showed the phylogenetic relationships among 45 wild barley of Southwest Asia, 18 wild barley of Central Asia, 20 wild barley of Tibet (★ ) and 20 cultivated barley from China () of Nam-1 gene (A) and HTL gene (B).
Mentions: Phylogenetic analyses were also performed to reveal the relationships among all accessions from the four populations. The Nam-1 gene tree showed that a majority of accessions of Chinese cultivated barley were grouped together with Tibetan wild barley (Fig. 3A). The phylogenetic tree based on the HTL gene clearly grouped all Chinese cultivated barley with all Tibetan wild barley (Fig. 3B).

Bottom Line: Our results showed that Tibetan wild barley distinctly diverged from Southwest Asian (Near East) wild barley, that Central Asian wild barley is related to Southwest Asian wild barley, and that Chinese domesticated barley shares the same haplotypes with Tibetan wild barley.Phylogenetic analysis showed a close relationship between Chinese domesticated barley and the Tibetan wild barley, suggesting that Tibetan wild barley was the ancestor of Chinese domesticated barley.Our results favor the polyphyletic origin for cultivated barley.

View Article: PubMed Central - PubMed

Affiliation: College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China.

ABSTRACT
The importance of wild barley from Qinghai-Tibet Plateau in the origin and domestication of cultivated barley has long been underestimated. Population-based phylogenetic analyses were performed to study the origin and genetic diversity of Chinese domesticated barley, and address the possibility that the Tibetan region in China was an independent center of barley domestication. Wild barley (Hordeum vulgare ssp. spontaneum) populations from Southwest Asia, Central Asia, and Tibet along with domesticated barley from China were analyzed using two nuclear genes. Our results showed that Tibetan wild barley distinctly diverged from Southwest Asian (Near East) wild barley, that Central Asian wild barley is related to Southwest Asian wild barley, and that Chinese domesticated barley shares the same haplotypes with Tibetan wild barley. Phylogenetic analysis showed a close relationship between Chinese domesticated barley and the Tibetan wild barley, suggesting that Tibetan wild barley was the ancestor of Chinese domesticated barley. Our results favor the polyphyletic origin for cultivated barley.

Show MeSH