title: Identification and differences of total proteins and their soluble fractions in some pseudocereals based on electrophoretic patterns.
abstract: Genetic diversity and relationships of 11 species and cultivars belonging to different Angiosperms families were examined using sodium dodecyl sulfate seed protein markers. The protein was resolved into 36 bands (for soybean), 41 (for quinoa), 35 (for buckwheat), and 28 to 39 bands of Amaranth species, respectively. All species and cultivars can be distinguished from each other. Soybean, quinoa, and buckwheat species had a characteristic protein pattern showing a high degree of polymorphism. The protein patterns of soybean were considerably different from other species. Amaranth species had similar seed protein electrophoretic profile. The similarity coefficients calculated on the basis of presence and absence of bands ranged from 0.08 to 0.97. Following the UPGMA algorithm of similarity coefficients, the examined species and varieties could be clustered into two similarity groups. Our results did not confirm the Tachtadzjan hypothesis that Polygonales (e.g., buckwheat) and Caryophyllales (e.g., quinoa and amaranth) are closely related. Our data rather indicate occurrence of significant genetic distance (similarity coefficients 0.05-0.10). Also, it is doubtful that amaranth and quinoa species are also closely related (similarity coefficients varied from 0.16 to 0.25). It seems that soybean, quinoa, buckwheat, and amaranth (as a genus) can be considered as phylogenetic distant taxa. Differences and similarities in the secondary structure were observed by circular dichroism spectra. Some similarity was found between these plants in their soluble protein fractions and amino acid composition. These plants can be a substitution of each other as well as for cereals.
authors.affiliation: Plant Breeding and Acclimatization Institute, Radzikow, Poland.
authors.forename: Jerzy
authors.initials: J
authors.lastname: Drzewiecki
authors.forename: Efren
authors.initials: E
authors.lastname: Delgado-Licon
authors.forename: Ratiporn
authors.initials: R
authors.lastname: Haruenkit
authors.forename: Elke
authors.initials: E
authors.lastname: Pawelzik
authors.forename: Olga
authors.initials: O
authors.lastname: Martin-Belloso
authors.forename: Yong-Seo
authors.initials: YS
authors.lastname: Park
authors.forename: Soon-Teck
authors.initials: ST
authors.lastname: Jung
authors.forename: Simon
authors.initials: S
authors.lastname: Trakhtenberg
authors.forename: Shela
authors.initials: S
authors.lastname: Gorinstein
mesh_terms: D027721:Amaranthus / Q000737:chemistry; D000596:Amino Acids / Q000032:analysis; D027465:Chenopodium quinoa / Q000737:chemistry; D002523:Edible Grain / Q000737:chemistry*; D004591:Electrophoresis, Polyacrylamide Gel; D019612:Fagopyrum / Q000737:chemistry; D010802:Phylogeny; D010940:Plant Proteins / Q000032:analysis*; D012639:Seeds / Q000737:chemistry; D012995:Solubility; D013025:Glycine max / Q000737:chemistry
chemical_list: D000596:Amino Acids; D010940:Plant Proteins