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TY - JOUR AU - Kumar, R. AU - Small, I. AU - Maréchal-Drouard, L. AU - Akama, K. PY - 1996 DA - 1996/09/01 TI - Striking differences in mitochondrial tRNA import between different plant species JO - Molecular and General Genetics MGG SP - 404 EP - 411 VL - 252 IS - 4 AB - A systematic comparison of the tRNAs imported into the mitochondria of larch, maize and potato reveals considerable differences among the three species. Larch mitochondria import at least eleven different tRNAs (more than half of those tested) corresponding to ten different amino acids. For five of these tRNAs [tRNAPhe(GAA), tRNALys(CUU), tRNAPro(UGG), tRNASer(GCU) and tRNASer(UGA)] this is the first report of import into mitochondria in any plant species. There are also differences in import between relatively closely related plants; wheat mitochondria, unlike maize mitochondria import tRNAHis, and sunflower mitochondria, unlike mitochondria from other angiosperms tested, import tRNASer(GCU) and tRNASer(UGA). These results suggest that the ability to import each tRNA has been acquired independently at different times during the evolution of higher plants, and that there are few apparent restrictions on which tRNAs can or cannot be imported. The implications for the mechanisms of mitochondrial tRNA Import in plants are discussed. SN - 1432-1874 UR - https://doi.org/10.1007/BF02173005 DO - 10.1007/BF02173005 ID - Kumar1996 ER -