Different types of allergies became a part of life of many people around the world. The research activities connecting to allergens are actually not oriented only for protein and immunological interactions, but to the genomic and transcriptomic background of them, too. Analysis and description of genomic variability of allergens in plant food resources will help to manage the allergen based strategies in the future. Here, the bioinformatic approach was used to develop and validate the specific primers for genomic screening of polymorphism of profilins (Profilin Based Amplicon Polymorphism; PBAP) and vicilins (Vicilin Based Amplicon Polymorphism; VBAP) among the legumes. The alignment of existing public databases data for these allergens in the group of legumes was performed. Subsequently, specific primers were designed and their ability to generate polymorphic amplicons were tested for three legumes – bean, lentil and chickpeas. In all cases, amplicons were generated and polymorphism was detected in all three species for profilin as well as for vicilin.
The nuclear reactor accident in Chernobyl, Ukraine, resulted in effects both locally and farther away. Most of the contaminated areas were the agricultural fields and forests. Experimental fields were established near Chernobyl—radioactively contaminated fields localized 5 km from Chernobyl Nuclear Power Plant as well as the remediated soil that is localized directly in the Chernobyl town. Two flax varieties growing under chronic exposition to ionizing radiation were used for this study—the local Ukrainian variety Kyivskyi and a commercial variety Bethune. The screening of the length polymorphism generated by transposable elements insertions were performed. All known types of common flax transposon, retrotransposons and iPBS approach were used. In the iPBS multiplex analyze, for the Kyivskyi variety, a unique addition was found in the seeds from the radioactive contaminated field and for the Bethune variety, a total of five amplicon additions were obtained and one deletion. For the TRIM Cassandra fingerprints, two amplicon additions were generated in the seeds from radioactive contaminated fields for the Bethune variety. In summary, the obtained data represent the genetic diversity between control and irradiated subgroups of flax seeds from Chernobyl area and the presence of activated transposable elements due to the irradiation stress.
Arachis hypogaea L. – peanut (syn. groundnut) belong botanically to annual herbs, more specifically to legumes (family Fabaceae). Cultivated from is characterized as allotetraploid specie and that has a large and genome with high level of complexity as a result of natural hybridization of wild diploid species Arachis cardenasii (nn) and Arachis batizocoi. Individual analysis that are aimed to description of the genetic similarity and variability of wild and cultivated Arachis species are substantial for the knowledge of intaspecific relationships. In this study, conserved DNA-derived polymorphism technique was used to analyse genetic variability of natural genotypes of peanut. CDDP is a simple PCR based method that was proved to be efficient in the studies of plant populations polymorphism. Primers used in CDDP target conserved sequences of plant functional genes that are involved in response to abiotic and biotic stresses. Here, bulked DNA samples of twenty-one natural populations were analysed by with five CDDP primer combinations. Selected primers produced a total of 260 amplicons, among which 107 (41.2%) amplicons were polymorphic. The average number of obtained amplicons per primer was about 51.8. Amplified polymorphic fragments of analysed genotypes ranged from 13 to 33 and percentage of polymorphism ranged from 35 % to 47 %. UPGMA cluster analysis was performed on the base of prepared binary matrices and obtained clustering has grouped the analyzed peanut populations into five major groups with further subgroups. The results of CCDP fingerprinting shown, that this marker technique provide sufficient distinguishing of a wild population of Arachis hypogaea L.. Analysed genotypes of peanut were separated into different groups based on genetic diversity, however, the level of polymorphisms that detected used markers among populations of Arachis hypogaea L. was low.
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