TY - JOUR
T1 - Horizontal transfer of entire genomes via mitochondrial fusion in the angiosperm Amborella
AU - Rice, Danny W.
AU - Alverson, Andrew J.
AU - Richardson, Aaron O.
AU - Young, Gregory J.
AU - Sanchez-Puerta, M. Virginia
AU - Munzinger, Jérôme
AU - Barry, Kerrie
AU - Boore, Jeffrey L.
AU - Zhang, Yan
AU - DePamphilis, Claude W.
AU - Knox, Eric B.
AU - Palmer, Jeffrey D.
PY - 2013
Y1 - 2013
N2 - We report the complete mitochondrial genome sequence of the flowering plant Amborella trichopoda. This enormous, 3.9-megabase genome contains six genome equivalents of foreign mitochondrial DNA, acquired from green algae, mosses, and other angiosperms. Many of these horizontal transfers were large, including acquisition of entire mitochondrial genomes from three green algae and one moss. We propose a fusion-compatibility model to explain these findings, with Amborella capturing whole mitochondria from diverse eukaryotes, followed by mitochondrial fusion (limited mechanistically to green plant mitochondria) and then genome recombination. Amborella's epiphyte load, propensity to produce suckers from wounds, and low rate of mitochondrial DNA loss probably all contribute to the high level of foreign DNA in its mitochondrial genome.
AB - We report the complete mitochondrial genome sequence of the flowering plant Amborella trichopoda. This enormous, 3.9-megabase genome contains six genome equivalents of foreign mitochondrial DNA, acquired from green algae, mosses, and other angiosperms. Many of these horizontal transfers were large, including acquisition of entire mitochondrial genomes from three green algae and one moss. We propose a fusion-compatibility model to explain these findings, with Amborella capturing whole mitochondria from diverse eukaryotes, followed by mitochondrial fusion (limited mechanistically to green plant mitochondria) and then genome recombination. Amborella's epiphyte load, propensity to produce suckers from wounds, and low rate of mitochondrial DNA loss probably all contribute to the high level of foreign DNA in its mitochondrial genome.
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U2 - 10.1126/science.1246275
DO - 10.1126/science.1246275
M3 - Article
C2 - 24357311
AN - SCOPUS:84890824581
SN - 0036-8075
VL - 342
SP - 1468
EP - 1473
JO - Science
JF - Science
IS - 6165
ER -