<Table> <Tr> <Td> Schematic ribosomal RNA phylogeny of Alphaproteobacteria </Td> </Tr> <Tr> <Td> <Table> <Tr> <Td> Magnetococcidae </Td> <Td> <P> Magnetococcus marinus </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> <Table> <Tr> <Td> Caulobacteridae </Td> <Td> <Table> <Tr> <Td> </Td> <Td> <P> Rhodospirillales, Sphingomonadales, Rhodobacteraceae, Rhizobiales, etc . </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> <P> Holosporales </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> </Td> </Tr> <Tr> <Td> </Td> </Tr> <Tr> <Td> Rickettsidae </Td> <Td> <Table> <Tr> <Td> Pelagibacterales </Td> <Td> <Table> <Tr> <Td> Pelagibacteraceae </Td> <Td> <Table> <Tr> <Td> </Td> <Td> <P> Pelagibacter </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> </Td> </Tr> <Tr> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> <P> Subgroups Ib, II, IIIa, IIIb, IV and V </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> </Td> </Tr> <Tr> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> <Table> <Tr> <Td> </Td> <Td> <P> Proto - mitochondria </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> <Table> <Tr> <Td> Anaplasmataceae </Td> <Td> <Table> <Tr> <Td> </Td> <Td> <Table> <Tr> <Td> </Td> <Td> <Table> <Tr> <Td> </Td> <Td> <P> Ehrlichia </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> <P> Anaplasma </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> </Td> </Tr> <Tr> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> <P> Wolbachia </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> </Td> </Tr> <Tr> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> <P> Neorickettsia </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> </Td> </Tr> <Tr> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> <Table> <Tr> <Td> Midichloriaceae </Td> <Td> <Table> <Tr> <Td> </Td> <Td> <P> Midichloria </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> </Td> </Tr> <Tr> <Td> </Td> </Tr> <Tr> <Td> Rickettsiaceae </Td> <Td> <Table> <Tr> <Td> </Td> <Td> <P> Rickettsia </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> </Td> </Tr> <Tr> <Td> The cladogram of Rickettsidae has been inferred by Ferla et al. from the comparison of 16S + 23S ribosomal RNA sequences . </Td> </Tr> </Table> <Tr> <Td> Schematic ribosomal RNA phylogeny of Alphaproteobacteria </Td> </Tr> <Tr> <Td> <Table> <Tr> <Td> Magnetococcidae </Td> <Td> <P> Magnetococcus marinus </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> <Table> <Tr> <Td> Caulobacteridae </Td> <Td> <Table> <Tr> <Td> </Td> <Td> <P> Rhodospirillales, Sphingomonadales, Rhodobacteraceae, Rhizobiales, etc . </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> <P> Holosporales </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> </Td> </Tr> <Tr> <Td> </Td> </Tr> <Tr> <Td> Rickettsidae </Td> <Td> <Table> <Tr> <Td> Pelagibacterales </Td> <Td> <Table> <Tr> <Td> Pelagibacteraceae </Td> <Td> <Table> <Tr> <Td> </Td> <Td> <P> Pelagibacter </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> </Td> </Tr> <Tr> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> <P> Subgroups Ib, II, IIIa, IIIb, IV and V </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> </Td> </Tr> <Tr> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> <Table> <Tr> <Td> </Td> <Td> <P> Proto - mitochondria </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> <Table> <Tr> <Td> Anaplasmataceae </Td> <Td> <Table> <Tr> <Td> </Td> <Td> <Table> <Tr> <Td> </Td> <Td> <Table> <Tr> <Td> </Td> <Td> <P> Ehrlichia </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> <P> Anaplasma </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> </Td> </Tr> <Tr> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> <P> Wolbachia </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> </Td> </Tr> <Tr> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> <P> Neorickettsia </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> </Td> </Tr> <Tr> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> <Table> <Tr> <Td> Midichloriaceae </Td> <Td> <Table> <Tr> <Td> </Td> <Td> <P> Midichloria </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> </Td> </Tr> <Tr> <Td> </Td> </Tr> <Tr> <Td> Rickettsiaceae </Td> <Td> <Table> <Tr> <Td> </Td> <Td> <P> Rickettsia </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> </Td> </Tr> <Table> <Tr> <Td> Magnetococcidae </Td> <Td> <P> Magnetococcus marinus </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> <Table> <Tr> <Td> Caulobacteridae </Td> <Td> <Table> <Tr> <Td> </Td> <Td> <P> Rhodospirillales, Sphingomonadales, Rhodobacteraceae, Rhizobiales, etc . </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> <P> Holosporales </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> </Td> </Tr> <Tr> <Td> </Td> </Tr> <Tr> <Td> Rickettsidae </Td> <Td> <Table> <Tr> <Td> Pelagibacterales </Td> <Td> <Table> <Tr> <Td> Pelagibacteraceae </Td> <Td> <Table> <Tr> <Td> </Td> <Td> <P> Pelagibacter </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> </Td> </Tr> <Tr> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> <P> Subgroups Ib, II, IIIa, IIIb, IV and V </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> </Td> </Tr> <Tr> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> <Table> <Tr> <Td> </Td> <Td> <P> Proto - mitochondria </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> <Table> <Tr> <Td> Anaplasmataceae </Td> <Td> <Table> <Tr> <Td> </Td> <Td> <Table> <Tr> <Td> </Td> <Td> <Table> <Tr> <Td> </Td> <Td> <P> Ehrlichia </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> <P> Anaplasma </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> </Td> </Tr> <Tr> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> <P> Wolbachia </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> </Td> </Tr> <Tr> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> <P> Neorickettsia </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> </Td> </Tr> <Tr> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> <Table> <Tr> <Td> Midichloriaceae </Td> <Td> <Table> <Tr> <Td> </Td> <Td> <P> Midichloria </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> </Td> </Tr> <Tr> <Td> </Td> </Tr> <Tr> <Td> Rickettsiaceae </Td> <Td> <Table> <Tr> <Td> </Td> <Td> <P> Rickettsia </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table>

The mitochrondria is the powerhouse of the cell