Horizontal Transfer of Entire Genomes via Mitochondrial Fusion in the Angiosperm Amborella

被引：316

作者：

Rice, Danny W. ^{[1
]}

Alverson, Andrew J. ^{[1
]}

Richardson, Aaron O. ^{[1
]}

Young, Gregory J. ^{[1
]}

Virginia Sanchez-Puerta, M. ^{[1
]}

Munzinger, Jerome ^{[2
]}

Barry, Kerrie ^{[3
]}

Boore, Jeffrey L. ^{[3
]}

Zhang, Yan ^{[4
]}

dePamphilis, Claude W. ^{[4
]}

Knox, Eric B. ^{[1
]}

Palmer, Jeffrey D. ^{[1
]}

机构：

[1] Indiana Univ, Dept Biol, Bloomington, IN 47405 USA

[2] IRD, Lab Bot & Ecol Vegetale Appl, UMR Bot & Bioinformat Architecture Plantes AMAP, Noumea, New Caledonia

[3] Joint Genome Inst, Dept Energy, Walnut Creek, CA 94598 USA

[4] Penn State Univ, Dept Biol, University Pk, PA 16802 USA

来源：

SCIENCE | 2013年 / 342卷 / 6165期

关键词：

GENE-TRANSFER; PLANT-MITOCHONDRIA; FLOWERING PLANTS; EVOLUTION; SUGGESTS; FISSION; ORIGINS;

D O I：

10.1126/science.1246275

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

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.

引用

页码：1468 / 1473

页数：6

共 31 条

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