Comparison of the TAS3 genes coding for trans-acting small interfering RNA in Araceae

Авторы: Krasnikova M.S., Troitsky A.V., Solovyev A.G., Morozov S.Y.
Журнал: Genetics and Plant Physiology
Том: 3
Номер: 3-4
Год издания: 2013
Первая страница: 113
Последняя страница: 125
Аннотация: Ta-siRNAs (trans-acting small interfering RNAs) belong to a plant-specific class of endogenous siRNAs (small interfering RNAs). These siRNAs have been found to regulate gene expression in plants including seed plants and mosses. Particularly, non-protein-coding TAS3 genes produce ta-siARF species which target the mRNAs of three Auxin Response Factor (ARF) genes (ARF2, ARF3/ETT and ARF4) for their subsequent degradation. The function of TAS3 precursor RNA is controlled by two miR390 target sites flanking tandem of ta-siARF sequences. Previous studies have shown that one of the conserved ta-siRNAs, TAS3, plays key roles in mosses and flowering plants. In this paper, we studied the organization of TAS3 genes in the specialized aquatic plants of family Araceae. We characterized several TAS3 loci in these plants. The sequenced loci were found to be similar to TAS3 genes of other flowering plants. Moreover, we revealed that some of TAS3 loci were transcribed in a tissue-specific manner.
Добавил в систему: Троицкий Алексей Викторович

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