Cross-exchange of B-vitamins underpins a mutualistic interaction between Ostreococcus tauri and Dinoroseobacter shibae

摘要

Determining the genetic basis for vitamin dependency. Growth of axenic and (with 1% glucose) with and without various B-vitamins at stationary phase after two sub-cultures. Schematic of biosynthetic pathways for aminobenzoic acid, niacin and biotin. Results of similarity sequence searches of and genomes for genes encoding biosynthetic enzymes for these vitamins are indicated. encodes the gene set necessary for synthesis for aminobenzoic acid, niacin and biotin ( ), whereas lacks a complete biosynthetic pathway for all three of these vitamins