@incollection{fdi:010076870, title = {{P}rokaryote/eukaryote dichotomy and bacteria/archaea/eukarya domains : two inseparable concepts}, author = {{B}ertrand, {J}.{C}. and {C}aumette, {P}. and {N}ormand, {P}. and {O}llivier, {B}ernard and {S}ime-{N}gando, {T}.}, editor = {}, language = {{ENG}}, abstract = {{T}he various schemes proposed to classify microorganisms in the living world have long been subject of heated debates. {T}he classical dichotomic distinction between {P}rokaryotae (cells without nucleus) and {E}ukaryotae (cells with nucleus) functional and phenotypic categories was deeply changed by r{RNA} gene-based analysis that divided the living world into three phylogenetic domains: the {B}acteria, the {A}rchaea (originally {A}rchaebacteria), and the {E}ukarya. {I}n this chapter, we review the terms of this debate between the prokaryotic/eukaryotic functional and phenotypic dichotomy and the 16{S}/18{S} phylogenetic dichotomy that separates prokaryotes into two distinct domains. {T}he specific characteristics that emphasize the organizational and functional complexity of prokaryotes and justify maintaining this terminology are discussed. {W}e conclude that the organizational and functional concept of a prokaryotes/eukaryotes dichotomy can be easily supplemented by the phylogenetic concept {B}acteria/{A}rchaea/{E}ukarya. {T}he two concepts are not irreconcilable but complementary, resulting in a consensual proposal that integrates both phenotypic and genotypic criteria}, keywords = {}, booktitle = {{P}rokaryotes and evolution}, numero = {}, pages = {1--21}, address = {{C}ham}, publisher = {{S}pringer}, series = {}, year = {2018}, DOI = {10.1007/978-3-319-99784-1_1}, ISBN = {978-3-319-99782-7}, URL = {https://www.documentation.ird.fr/hor/fdi:010076870}, }