The Complete Moss Mitochondrial Genome in the Angiosperm Amborella Is a Chimera Derived from Two Moss Whole-Genome Transfers.

ABSTRACT: Sequencing of the 4-Mb mitochondrial genome of the angiosperm Amborella trichopoda has shown that it contains unprecedented amounts of foreign mitochondrial DNA, including four blocks of sequences that together correspond almost perfectly to one entire moss mitochondrial genome. This implies whole-genome transfer from a single moss donor but conflicts with phylogenetic results from an earlier, PCR-based study that suggested three different moss donors to Amborella. To resolve this conflict, we conducted an expanded set of phylogenetic analyses with respect to both moss lineages and mitochondrial loci. The moss DNA in Amborella was consistently placed in either of two positions, depending on the locus analyzed, as sister to the Ptychomniales or within the Hookeriales. This agrees with two o

SUBMITTER: Taylor ZN 

PROVIDER: S-EPMC4664403 | biostudies-literature | 2015

REPOSITORIES: biostudies-literature