Mapping Geological Events and Nitrogen Fixation Evolution Onto the Timetree of the Evolution of Nitrogen-Fixation Genes.
Mol Biol Evol
; 41(2)2024 Feb 01.
Article
en En
| MEDLINE
| ID: mdl-38319744
ABSTRACT
Nitrogen is essential for all organisms, but biological nitrogen fixation (BNF) occurs only in a small fraction of prokaryotes. Previous studies divided nitrogenase-gene-carrying prokaryotes into Groups I to IV and provided evidence that BNF first evolved in bacteria. This study constructed a timetree of the evolution of nitrogen-fixation genes and estimated that archaea evolved BNF much later than bacteria and that nitrogen-fixing cyanobacteria evolved later than 1,900 MYA, considerably younger than the previous estimate of 2,200 MYA. Moreover, Groups III and II/I diverged â¼2,280 MYA, after the Kenorland supercontinent breakup (â¼2,500-2,100 MYA) and the Great Oxidation Event (â¼2,400-2,100 MYA); Groups III and Vnf/Anf diverged â¼2,086 MYA, after the Yarrabubba impact (â¼2,229 MYA); and Groups II and I diverged â¼1,920 MYA, after the Vredefort impact (â¼2,023 MYA). In summary, this study provided a timescale of BNF events and discussed the possible effects of geological events on BNF evolution.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Cianobacterias
/
Fijación del Nitrógeno
Idioma:
En
Revista:
Mol Biol Evol
Asunto de la revista:
BIOLOGIA MOLECULAR
Año:
2024
Tipo del documento:
Article
País de afiliación:
Taiwán
Pais de publicación:
Estados Unidos