Marchenkov A M, Bondar A A, Petrova D P, Habudaev K V, Galachyants Yu P, Zakharova Yu R, Volokitina N A, Grachev M A
Limnological Institute, Siberian Branch, Russian Academy of Sciences, ul. Ulan-Batorskaya 3, Irkutsk, 664033, Russia.
Institute of Chemical Biology and Fundamental Medicine, Siberian Branch, Russian Academy of Sciences, pr. Akademika Lavrent'eva 8, Novosibirsk, 630090, Russia.
Dokl Biochem Biophys. 2016 Nov;471(1):407-409. doi: 10.1134/S1607672916060089. Epub 2017 Jan 6.
The existence of the cluster of duplicated sit silicon transporter genes in the chromosome of the diatom Synedra acus subsp. radians was shown for the first time. Earlier, the localization of sit genes in the same chromosome and cluster formation caused by gene duplication was shown only for the marine raphid pennate diatom P. tricornutum. Only non-clustered sit genes were found in the genomes of other diatoms. It is reasonable to assume that sit tandem (sit-td) and sit triplet (sit-tri) genes of S. acus subsp. radians occurred as a result of gene duplication followed by divergence of gene copies.
首次发现硅藻辐射圆筛藻（Synedra acus subsp. radians）染色体中存在重复的硅转运蛋白基因簇。此前，仅在海洋针杆硅藻三角褐指藻（P. tricornutum）中发现了硅转运蛋白基因位于同一染色体上且因基因复制导致基因簇形成的情况。在其他硅藻的基因组中仅发现了非簇状的硅转运蛋白基因。合理推测，辐射圆筛藻的硅转运蛋白串联基因（sit-td）和三联基因（sit-tri）是基因复制后基因拷贝发生分化的结果。
