Chromobacterium violaceum adaptation to low-phosphate conditions

Autor(es)

da Costa Vasconcelos, Fernanda Nogales ^[1] ; Padilla, Gabriel ^[1] ; Spira, Beny ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Dept Microbiol, Inst Ciencias Biomed, Ave Prof Lineu Prestes 1374, BR-05508900 Sao Paulo, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Archives of Microbiology; v. 198, n. 3, p. 269-277, APR 2016.
• Citações Web of Science: 1

Resumo

Chromobacterium violaceum is a free-living bacterium that inhabits low-nutrient environments such as the Amazon basin. Bacteria respond to phosphate (Pi) shortage by expressing a range of genes involved in Pi uptake and assimilation, known as the PHO regulon. Several PHO regulon genes have been annotated in the genome of C. violaceum. Here we show that C. violaceum is extremely well adapted to low-Pi conditions. Remarkably, this bacterium is able to grow in media containing only traces of Pi. The PHO regulon genes are induced upon Pi depletion, but the bacteria continued to grow under these conditions. Unlike other Proteobacteria hitherto analyzed, neither PstS nor PhoU play a role in the repression of the PHO regulon under Pi excess. (AU)

• Processo FAPESP: 09/05265-7 - Caracterização de genes pertencentes ao regulon PHO e resistência geral ao estresse em Chromobacterium violaceum
• Beneficiário: Fernanda Nogales da Costa Vasconcelos
• Modalidade de apoio: Bolsas no Brasil - Doutorado Direto