01416nas a2200169   4500008004100000245008300041210006900124300001200193490000700205520079700212653010401009100002001113700001601133700002201149700002501171856005001196       2006                        eng d00aRNA editing and phylogenetic reconstruction in two monocot mitochondrial genes0 aRNA editing and phylogenetic reconstruction in two monocot mitoc  a871-8860 v553 aThe mitochondrial genome of land plants has a high level of evolutionary plasticity that may impair its use in phylogenetic analyses. Among the most challenging properties are RNA editing and retroprocessing of edited mRNA into the mitochondrial and/or nuclear genome as processed paralogs. Using mtDNA sequence data encoding for apocytochrome B (cob) and the alpha subunit of F1-ATP synthase (atp1) across the monocots, and in two subclades, alismatids and Agavaceae, it is shown that edited sites, despite being more homoplasious than non-edited sites, perform well on the trees, and that they are not randomly distributed among taxa but have a clade specific distribution. Indirect evidence for the presence of processed paralogs is presented and their likely evolutionary fate discussed. 10aAgavaceae, Alismatales, Calycanthaceae, Monocotyledones, phylogeny, RNA editing, processed paralogs1 aPetersen, Gitte1 aSeberg, Ole1 aDavis, Jerrold, I1 aStevenson, Dennis, W  uhttps://juncaginaceae.myspecies.info/node/27301949nas a2200253   4500008004100000245007800041210006900119300001200188490000700200520110500207653008701312100002201399700002001421700001601441700002501457700002601482700002101508700002801529700002401557700002201581700002301603700002001626856004901646       2006                        eng d00aAre mitochondrial genes useful for the analysis of monocot relationships?0 aAre mitochondrial genes useful for the analysis of monocot relat  a857-8700 v553 aA phylogenetic analysis of monocots and related dicots was conducted, using a four-gene matrix consisting of two genes from the plastid genome (matK and rbcL) and two from the mitochondrial genome (atpA/atp1 and cob). The taxon sample includes 101 monocots and 36 dicots, and all four genes were sampled for all 137 taxa. Jackknife support was assessed for clades resolved by the four-gene analysis, and compared to support for the same clades by each of the four three-gene subset matrices, in order to quantify the degree to which each gene contributed to or detracted from support for each clade. Instances of positively and negatively correlated support for clades by genes of the same and different genomes were observed. In particular, the placement of Acorus within a clade that also includes Tofieldiaceae, Araceae, and Alismatales s.s., as opposed to its frequent placement as sister of all other monocots, is supported by atpA and matK. The results indicate that genes from the mitochondrial genome provide a unique test of relationships that have been inferred with plastid-encoded genes. 10aatpA, cob, mitochondrial genes, matK, monocots, phylogenetics, plastid genes, rbcL1 aDavis, Jerrold, I1 aPetersen, Gitte1 aSeberg, Ole1 aStevenson, Dennis, W1 aHardy, Christopher, R1 aSimmons, Mark, P1 aMichelangeli, Fabian, A1 aGoldman, Douglas, H1 aCampbell, Lisa, M1 aSpecht, Chelsea, D1 aCohen, James, I  uhttps://juncaginaceae.myspecies.info/node/85