Interorganellar gene transfer in bryophytes: the functional nad7 gene is nuclear encoded in Marchantia polymorpha. Kobayashi, Y., Knoop, V., Fukuzawa, H., Brennicke, A., & Ohyama, K. Molecular general genetics MGG, 256(5):589-592, 1997. abstract bibtex The nad7 gene, encoding subunit 7 of NADH dehydrogenase, is mitochondrially encoded in seed plants. In the liverwort, Marchantia polymorpha, only a pseudogene is located in the mitochondrial genome. We have now identified the functional nad7 gene copy in the nuclear genome of Marchantia, coding for a polypeptide of 468 amino acids. The nuclear-encoded nad7 has lost the two group II introns present in the mitochondrial pseudogene copy. Instead, a typical nuclear intron is found to split an exon encoding the presumptive mitochondrial targeting signal peptide and the mature subunit 7 of NADH dehydrogenase. These results suggest that RNA-mediated gene transfer from the mitochondrial into the nuclear genome occurs not only in seed plants but also in bryophytes.
@article{
title = {Interorganellar gene transfer in bryophytes: the functional nad7 gene is nuclear encoded in Marchantia polymorpha.},
type = {article},
year = {1997},
pages = {589-592},
volume = {256},
institution = {Department of Agricultural Chemistry, Faculty of Agriculture, Kyoto University, Japan.},
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created = {2011-05-20T17:26:15.000Z},
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last_modified = {2011-05-20T17:26:15.000Z},
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abstract = {The nad7 gene, encoding subunit 7 of NADH dehydrogenase, is mitochondrially encoded in seed plants. In the liverwort, Marchantia polymorpha, only a pseudogene is located in the mitochondrial genome. We have now identified the functional nad7 gene copy in the nuclear genome of Marchantia, coding for a polypeptide of 468 amino acids. The nuclear-encoded nad7 has lost the two group II introns present in the mitochondrial pseudogene copy. Instead, a typical nuclear intron is found to split an exon encoding the presumptive mitochondrial targeting signal peptide and the mature subunit 7 of NADH dehydrogenase. These results suggest that RNA-mediated gene transfer from the mitochondrial into the nuclear genome occurs not only in seed plants but also in bryophytes.},
bibtype = {article},
author = {Kobayashi, Y and Knoop, V and Fukuzawa, H and Brennicke, A and Ohyama, K},
journal = {Molecular general genetics MGG},
number = {5}
}
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