Ebook: Origin of Mitochondria and Hydrogenosomes
- Tags: Cell Biology, Evolutionary Biology, Biochemistry general, Microbial Genetics and Genomics
- Year: 2007
- Publisher: Springer-Verlag Berlin Heidelberg
- Edition: 1
- Language: English
- pdf
The evolutionary origins of hydrogenosomes have been the subject of considerable debate. From early days it was apparent that hydrogenosomes had evolved on multiple occasions in different eukaryotes, but from which progenitor organelle or endosymbiont was unresolved. Work from many different laboratories has contributed towards formulating the current hypothesis that hydrogenosomes and mitosomes, their even more reduced cousins, share common ancestry with mitochondria. Their shared similarities, for example their common mechanisms of protein import and their double membrane, can be explained by common ancestry, and their differences by descent with modification under contrasting lifestyles. The hypothesis that mitochondria, mitosomes and hydrogenosomes are homologues, predicts that, as the organelles are studied more deeply, additional shared features will be revealed.
However, it is already apparent from the contributions to this volume, that identifying the genetic contribution to eukaryotes of the mitochondrial endosymbiosis, and revealing the functions of its descendent organelles, are key to understanding eukaryotic biology and evolution.
The evolutionary origins of hydrogenosomes have been the subject of considerable debate. From early days it was apparent that hydrogenosomes had evolved on multiple occasions in different eukaryotes, but from which progenitor organelle or endosymbiont was unresolved. Work from many different laboratories has contributed towards formulating the current hypothesis that hydrogenosomes and mitosomes, their even more reduced cousins, share common ancestry with mitochondria. Their shared similarities, for example their common mechanisms of protein import and their double membrane, can be explained by common ancestry, and their differences by descent with modification under contrasting lifestyles. The hypothesis that mitochondria, mitosomes and hydrogenosomes are homologues, predicts that, as the organelles are studied more deeply, additional shared features will be revealed.
However, it is already apparent from the contributions to this volume, that identifying the genetic contribution to eukaryotes of the mitochondrial endosymbiosis, and revealing the functions of its descendent organelles, are key to understanding eukaryotic biology and evolution.
The evolutionary origins of hydrogenosomes have been the subject of considerable debate. From early days it was apparent that hydrogenosomes had evolved on multiple occasions in different eukaryotes, but from which progenitor organelle or endosymbiont was unresolved. Work from many different laboratories has contributed towards formulating the current hypothesis that hydrogenosomes and mitosomes, their even more reduced cousins, share common ancestry with mitochondria. Their shared similarities, for example their common mechanisms of protein import and their double membrane, can be explained by common ancestry, and their differences by descent with modification under contrasting lifestyles. The hypothesis that mitochondria, mitosomes and hydrogenosomes are homologues, predicts that, as the organelles are studied more deeply, additional shared features will be revealed.
However, it is already apparent from the contributions to this volume, that identifying the genetic contribution to eukaryotes of the mitochondrial endosymbiosis, and revealing the functions of its descendent organelles, are key to understanding eukaryotic biology and evolution.
Content:
Front Matter....Pages i-xviii
The Road to Hydrogenosomes....Pages 1-11
Mitochondria: Key to Complexity....Pages 13-38
Origin, Function, and Transmission of Mitochondria....Pages 39-56
Mitochondria and Their Host: Morphology to Molecular Phylogeny....Pages 57-83
Anaerobic Mitochondria: Properties and Origins....Pages 85-103
Iron–Sulfur Proteins and Iron–Sulfur Cluster Assembly in Organisms with Hydrogenosomes and Mitosomes....Pages 105-133
Hydrogenosomes (and Related Organelles, Either) Are Not the Same....Pages 135-159
The Chimaeric Origin of Mitochondria: Photosynthetic Cell Enslavement, Gene-Transfer Pressure, and Compartmentation Efficiency....Pages 161-199
Constantin Merezhkowsky and the Endokaryotic Hypothesis....Pages 201-237
The Diversity of Mitochondrion-Related Organelles Amongst Eukaryotic Microbes....Pages 239-275
Mitosomes of Parasitic Protozoa: Biology and Evolutionary Significance....Pages 277-300
Back Matter....Pages 301-306
The evolutionary origins of hydrogenosomes have been the subject of considerable debate. From early days it was apparent that hydrogenosomes had evolved on multiple occasions in different eukaryotes, but from which progenitor organelle or endosymbiont was unresolved. Work from many different laboratories has contributed towards formulating the current hypothesis that hydrogenosomes and mitosomes, their even more reduced cousins, share common ancestry with mitochondria. Their shared similarities, for example their common mechanisms of protein import and their double membrane, can be explained by common ancestry, and their differences by descent with modification under contrasting lifestyles. The hypothesis that mitochondria, mitosomes and hydrogenosomes are homologues, predicts that, as the organelles are studied more deeply, additional shared features will be revealed.
However, it is already apparent from the contributions to this volume, that identifying the genetic contribution to eukaryotes of the mitochondrial endosymbiosis, and revealing the functions of its descendent organelles, are key to understanding eukaryotic biology and evolution.
Content:
Front Matter....Pages i-xviii
The Road to Hydrogenosomes....Pages 1-11
Mitochondria: Key to Complexity....Pages 13-38
Origin, Function, and Transmission of Mitochondria....Pages 39-56
Mitochondria and Their Host: Morphology to Molecular Phylogeny....Pages 57-83
Anaerobic Mitochondria: Properties and Origins....Pages 85-103
Iron–Sulfur Proteins and Iron–Sulfur Cluster Assembly in Organisms with Hydrogenosomes and Mitosomes....Pages 105-133
Hydrogenosomes (and Related Organelles, Either) Are Not the Same....Pages 135-159
The Chimaeric Origin of Mitochondria: Photosynthetic Cell Enslavement, Gene-Transfer Pressure, and Compartmentation Efficiency....Pages 161-199
Constantin Merezhkowsky and the Endokaryotic Hypothesis....Pages 201-237
The Diversity of Mitochondrion-Related Organelles Amongst Eukaryotic Microbes....Pages 239-275
Mitosomes of Parasitic Protozoa: Biology and Evolutionary Significance....Pages 277-300
Back Matter....Pages 301-306
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