[Transcriptional regulation of noeAB from Sinorhizobium meliloti 042BM].
The expression regulation of S. meliloti 042BM noeAB was studied. The results showed that trigonelline could not elevate the level of noeAB expression, which indicated that these genes are not regulated by nodD2. Since association of nodD3 and syrM could not change the level of the genes expression, they aren't also controlled by nodD3-syrM system. However, induction of luteolin resulted in 16 times increase of noeAB expression, which indicated that noeAB was regulated by nodD1. Most interestingly, more than 30 times increase in its expression was observed on TY medium without any flavonoid. Thus, it was suggested that noeAB may be controlled by other unknown factors.
Key Laboratory for Agro-Microbial Resources and Application of Agriculture Ministry, College of Biological Sciences, China Agricultural University, Beijing 100094, China.
Bing-hai
BH
Du
Lei
L
Wang
Xiao-hong
XH
Li
Su-wei
SW
Qi
Su-sheng
SS
Yang
D000470:Alkaloids / Q000494:pharmacology; D001426:Bacterial Proteins / Q000235:genetics* / Q000378:metabolism; D003470:Culture Media; D015964:Gene Expression Regulation, Bacterial / Q000187:drug effects; D005798:Genes, Bacterial; D047311:Luteolin / Q000494:pharmacology; D016962:Sinorhizobium meliloti / Q000235:genetics*; D014158:Transcription, Genetic
D000470:Alkaloids; D001426:Bacterial Proteins; D003470:Culture Media; C009560:trigonelline; D047311:Luteolin