Aspartate aminotransferase and alcohol dehydrogenase isoenzymes: Intraspecific differentiation inAegilops tauschii and the origin of the D genome polyploids in the wheat group

Jaaska, Vello

doi:10.1007/bf00982790

Cited by 89 publications

(51 citation statements)

References 10 publications

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“…Leaf tissue of 2-3-week-old green plants was homogenized as described by Hart & Langston (1977 A polyacrylamide gel electrophoretic system with 0.25 M Tris-0.1 M HCl gel buffer (Jaaska, 1981) was used for EP and GOT. Starch gel electrophoresis was performed horizontally on 12 per cent starch gels cooled with ice packs.…”

Section: Methodsmentioning

confidence: 99%

“…Studies of variation among geographically diverse accessions of Ae. squarrosa from the world germ-plasm collections have been carried out using molecular markers, such as allozymes (Jaaska, 1980(Jaaska, , 1981(Jaaska, , 1984Lagudah & Halloran, 1989;Dudnikov & Goncharov, 1993), storage proteins (Lagudah & Halloran, 1988) and DNA markers (Lubbers et al, 1991). Information on the extent of genetic variation in Ae.…”

Section: Introductionmentioning

confidence: 99%

“…In reality, these two typical forms are connected by a continuous range of intermediate forms. This presents a problem for researchers as a considerable number of plants can not be unambiguously assigned to either of the subspecies (Jaaska, 1981;Lagudah & Halloran, 1988). Therefore, distinguishing between Ae.…”

Section: Introductionmentioning

confidence: 99%

“…strangulata only plants with a sharply defined moniliform spike, which occupy the narrow belt along the south-eastern Caspian shore near Gorgan in Iran. According to Jaaska (1981), ssp. strangulata is morphologically more variable and inhabits eastern Armenia, Azerbaijan, Nakhitshevan, Northern Iran and Western Kopet-Dag in Turkmenistan.…”

Section: Introductionmentioning

confidence: 99%

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Allozyme variation in Transcaucasian populations of Aegilops squarrosa

Dudnikov

1998

Heredity

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Genetic variation at 27 enzyme loci was studied in 24 Transcaucasian populations of Aegilops squarrosa: 12 ssp. eusquarrosa and 12 ssp. strangulata populations. Most of the genetic variation was among populations: G ST accounted for 0.67 and 0.64 for ssp. eusquarrosa and ssp. strangulata, respectively. The Acph1, Est2, Est5, Got1 and Got2 loci were found to be involved in the adaptive process of Ae. squarrosa subspecies divergence. Allele variation at the Ep locus is most likely to be neutral. The remaining 21 enzyme loci are under purifying selection of different intensities.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Allozyme variation in Transcaucasian populations of Aegilops squarrosa

Dudnikov

1998

Heredity

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“…As the near-isogenic lines squarrosa ssp. strangu/ata is proposed to be the D genome donor of hexaploid wheat (Jaaska, 1981;Lagudah & Halloran, 1988). However, as Pm2 is widespread in diploid A. squarrosa accessions other than ssp.…”

Section: Discussionmentioning

confidence: 99%

Chromosomal location of powdery mildew resistance genes in Triticum aestivum L. (common wheat). 2. Genes Pm2 and Pm19 from Aegilops squarrosa L.

Lutz

Hsam

Limpert³

et al. 1995

Heredity

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Genome origins ofTriticum cylindricum, Triticum triunciale,andTriticum ventricosum (Poaceae) inferred from variation in restriction patterns of repeated nucleotide sequences: a methodological study

Dubcovsky

Dvořák

1994

American J of Botany

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Three methods of phylogenetic inferences on polyploid plants employing variation in restriction sites in repeated nucleotide sequences were compared. Allotetraploid Triticum species of well-established origin were used as a model. Methods based on determination of the proportion of restriction fragments shared between a polyploid and its diploid relatives generated biased results because of uneven numbers of restriction fragments among diploid species and presence of common bands in phylogenetically related diploid species. A method employing restriction fragments unique to a diploid species (marker bands) was not affected by either factor and generated results consistent with cytogenetic inferences. It is shown that the latter method can be used to investigate the origin of a polyploid species even when one of its progenitors is extinct or when the polyploid and its diploid progenitors have diverged.

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Aspartate aminotransferase and alcohol dehydrogenase isoenzymes: Intraspecific differentiation inAegilops tauschii and the origin of the D genome polyploids in the wheat group

Cited by 89 publications

References 10 publications

Allozyme variation in Transcaucasian populations of Aegilops squarrosa

Allozyme variation in Transcaucasian populations of Aegilops squarrosa

Chromosomal location of powdery mildew resistance genes in Triticum aestivum L. (common wheat). 2. Genes Pm2 and Pm19 from Aegilops squarrosa L.

Genome origins ofTriticum cylindricum, Triticum triunciale,andTriticum ventricosum (Poaceae) inferred from variation in restriction patterns of repeated nucleotide sequences: a methodological study

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