Prophase diagram labeled5/1/2023 ![]() ![]() We conclude that variation in (peri)centromeric sequences, number and localization of rDNA sites as well as chromosome number (dysploidy) are involved in the diversification of the genus Nigella. These karyotype groups agreed with the phylogenetic analysis using ITS and rbc L sequences. orientalis as the second group) and a more distant group with 2 n = 2 x = 14 and a karyotype formula of 8m + 2st + 4t (including N. Based on the chromosome numbers, genome size and (peri)centromeric satellites, three karyotype groups were observed: Two with 2 n = 2 x = 12 and a karyotype formula of 10m + 2t (including N. hispanica, each chromosome revealed at least one 45S rDNA site and one of them occurs in hemizygous condition. A high variation in number and position of 45S rDNA loci were found among Nigella species. bucharica were identified, which were mostly (peri)centromeric and represented about 1% of each genome. The analyzed Nigella species possess large genomes of about 7.4 to 12.4 Gbp/1C. ![]() Roughly, half of the genomes are retrotransposons (class I transposons), while DNA transposons (class II transposons) contributed to only about 2% of the genomes. High- and moderate-copy repeat sequences occupy 57.52, 59.01, and 64.73% of N. bucharica was performed using low-pass Illumina genomic reads followed by karyotyping and FISH mapping of seven Nigella species using the in silico identified repeats and ribosomal DNA (rDNA) probes. Nigella is a small genus belonging to the Ranunculaceae family which is presumably originated and distributed in Aegean and the adjacent Western-Irano-Turanian region. ![]()
0 Comments
Leave a Reply.AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |