Durum wheat cultivation associated with Aegilops tauschii in northern Iran

Matsuoka, Yoshihiro; Aghaei, Mohammad Jaffar; Abbasi, Mohammad Reza; Totiaei, Abdolhosain; Mozafari, J; Ohta, Souichi

doi:10.1007/s10722-007-9290-x

Cited by 21 publications

(11 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the southern coastal region of the Caspian Sea, Ae. tauschii grows as a weed in the field of cultivated tetraploid wheat (Matsuoka et al 2008b).…”

Section: Introductionmentioning

confidence: 99%

Population structure of wild wheat D‐genome progenitor Aegilops tauschii Coss.: implications for intraspecific lineage diversification and evolution of common wheat

et al. 2010

Self Cite

View full text Add to dashboard Cite

Aegilops tauschii Coss. is the D-genome progenitor of hexaploid wheat. Aegilops tauschii, a wild diploid species, has a wide natural species range in central Eurasia, spreading from Turkey to western China. Amplified fragment length polymorphism (AFLP) analysis using a total of 122 accessions of Ae. tauschii was conducted to clarify the population structure of this widespread wild wheat species. Phylogenetic and principal component analyses revealed two major lineages in Ae. tauschii. Bayesian population structure analyses based on the AFLP data showed that lineages one (L1) and two (L2) were respectively significantly divided into six and three sublineages. Only four out of the six L1 sublineages were diverged from those of western habitats in the Transcaucasia and northern Iran region to eastern habitats such as Pakistan and Afghanistan. Other sublineages including L2 were distributed to a limited extent in the western region. Subspecies strangulata seemed to be differentiated in one sublineage of L2. Among three major haplogroups (HG7, HG9 and HG16) previously identified in the Ae. tauschii population based on chloroplast variation, HG7 accessions were widely distributed to both L1 and L2, HG9 accessions were restricted to L2, and HG16 accessions belonged to L1, suggesting that HG9 and HG16 were formed from HG7 after divergence of the first two lineages of the nuclear genome. These results on the population structure of Ae. tauschii and the genealogical relationship among Ae. tauschii accessions should provide important agricultural and evolutionary knowledge on genetic resources and conservation of natural genetic diversity.

show abstract

“…In the southern coastal region of the Caspian Sea, Ae. tauschii grows as a weed in the field of cultivated tetraploid wheat (Matsuoka et al 2008b).…”

Section: Introductionmentioning

confidence: 99%

Population structure of wild wheat D‐genome progenitor Aegilops tauschii Coss.: implications for intraspecific lineage diversification and evolution of common wheat

et al. 2010

Self Cite

View full text Add to dashboard Cite

show abstract

“…strangulata is most likely the donor of the wheat D genome (Hammer 1980;Dvorak et al 1998). In recent year, Matsuoka et al (2008) reported field observations of cultivated T. turgidum ssp. durum (Desf.…”

Section: Introductionmentioning

confidence: 99%

Microsatellite analysis of genetic diversity and population genetic structure of Aegilops tauschii Coss. in Northern Iran

Naghavi

Hajikram

Taleei

et al. 2009

Genet Resour Crop Evol

View full text Add to dashboard Cite

Genetic diversity and population genetic structure of Aegilops tauschii in Northern Iran were studied based on nine microsatellite loci. A high level of genetic diversity was observed from the accessions collected from six regions (provinces). These accessions include 79 samples of the two subspecies (tauschii and strangulata), the intermediate form (among morphologically distinguished subspecies) and ten accessions of Triticum aestivum. The nine microsatellites revealed a total of 141 alleles, with an average of 15.7 alleles per locus. A comparison of the parameters showing genetic diversity, including the observed heterozygosity (Ho), gene diversity (He) and Shannon's information index (I) of Ae. tauschii accessions from different provinces in Northern Iran, indicated that subsp. tauschii possesses the highest genetic diversity, followed by intermediate form.Genetic distance between subsp. strangulata and subsp. tauschii was low, confirming high gene flow between these two subspecies. However, intermediate form was more distinct from both of them. It was also found that the genetic diversity of T. aestivum is obviously lower than that of Ae. tauschii accessions.Moreover, the level of genetic diversity for Gilan, Golestan and Mazanderan provinces was higher than for Ardebil, Ghazvin and Semnan provinces, suggesting that these regions may provide a readily available source of potentially useful variation for wheat improvement.

show abstract

“…Ae. tauschii weedy-stands often occur in wheat and barley fields within the species range13, but the species natural habitats encompass sandy seashores, deserts margins, stony hills, steppes, wastelands, roadsides, and humid temperate forests. It is a polymorphic self-pollinating diploid species with a wide geographic range in central Eurasia.…”

mentioning

confidence: 99%

Salt tolerance during germination and seedling growth of wild wheat Aegilops tauschii and its impact on the species range expansion

Sugiyama

Takumi

Matsuoka

2016

Sci Rep

Self Cite

View full text Add to dashboard Cite

Adaptation to edaphic stress may have a key role in plant species range expansion. Aegilops tauschii Coss., the common wheat’s D-genome progenitor native to the Transcaucasus-Middle East region, is a good model to study the relationships between soil salinity and plant distributions: one of its intraspecific sublineages, TauL1b, drove the long-distance eastward expansion of this species range reaching semi-arid-central Asia. Salt tolerance during germination and seedling growth was evaluated in 206 Ae. tauschii accessions by treating seeds with NaCl solutions differing in concentrations. Differences in natural variation patterns were analyzed between sublineages and associated with natural edaphic condition variables, and then compared with reproductive trait variation patterns. The natural variations observed in NaCl-induced-stress tolerance had clear geographic and genetic structure. Seedling growth significantly increased in the TauL1b accessions that were collected from salt-affected soil habitats, whereas germinability did not. Principal component analysis suggested that the NaCl-induced-stress tolerances and reproductive traits might have had a similar degree of influence on Ae. tauschii’s eastward range expansion. Adaptation to salt-affected soils through increased seedling growth was an important factor for the species’ successful colonization of the semi-arid central Asian habitats. TauL1b accessions might provide useful genetic resources for salt-tolerant wheat breeds.

show abstract

Durum wheat cultivation associated with Aegilops tauschii in northern Iran

Cited by 21 publications

References 16 publications

Population structure of wild wheat D‐genome progenitor Aegilops tauschii Coss.: implications for intraspecific lineage diversification and evolution of common wheat

Population structure of wild wheat D‐genome progenitor Aegilops tauschii Coss.: implications for intraspecific lineage diversification and evolution of common wheat

Microsatellite analysis of genetic diversity and population genetic structure of Aegilops tauschii Coss. in Northern Iran

Salt tolerance during germination and seedling growth of wild wheat Aegilops tauschii and its impact on the species range expansion

Contact Info

Product

Resources

About