The Mesorhizobium loti purB gene is involved in infection thread formation and nodule development in Lotus japonicus.
The purB and purH mutants of Mesorhizobium loti exhibited purine auxotrophy and nodulation deficiency on Lotus japonicus. In the presence of adenine, only the purH mutant induced nodule formation and the purB mutant produced few infection threads, suggesting that 5-aminoimidazole-4-carboxamide ribonucleotide biosynthesis catalyzed by PurB is required for the establishment of symbiosis.
Okazaki
Shin
S
Department of Biological Sciences, Faculty of Science, Nara Women's University, Nara 630- 8506, Japan.
Hattori
Yoshiyuki
Y
Saeki
Kazuhiko
K
D001426:Bacterial Proteins / Q000235:genetics* / Q000378:metabolism; D015964:Gene Expression Regulation, Bacterial; D005798:Genes, Bacterial; D000070116:Lotus / Q000378:metabolism* / Q000382:microbiology*; D009154:Mutation; D012230:Rhizobiaceae / Q000235:genetics* / Q000378:metabolism; D012265:Ribonucleotides / Q000096:biosynthesis; D053204:Root Nodules, Plant / Q000254:growth & development* / Q000382:microbiology*