INVESTIGADORES
BASILE Laura Ana
artículos
Título:
The transcriptional factor TtsI is involved in a negative regulation of swimming motility in Mesorhizobium loti MAFF303099
Autor/es:
CECILIA M. DUARTE; LAURA A. BASILE; ANDR´ES ZALGUIZURI; VIVIANA C. LEPEK
Revista:
FEMS MICROBIOLOGY LETTERS
Editorial:
WILEY-BLACKWELL PUBLISHING, INC
Referencias:
Lugar: Londres; Año: 2016 vol. 363
ISSN:
0378-1097
Resumen:
Mesorhizobium loti MAFF303099 has a functional Type III secretion system (T3SS) that is involved in the determination ofcompetitiveness for legume nodulation. Here we demonstrate that the transcriptional factor TtsI, which positivelyregulates T3SS genes expression, is involved in a negative regulation of M. loti swimming motility in soft-agar. Conditionsthat induce T3SS expression affect flagella production. The same conditions also affect promoter activity of M. loti visNgene, a homolog to the positive regulator of flagellar genes that has been described in other rhizobia. Defects in T3SScomplex assembly at membranes limited the negative regulation of motility by the expression of TtsI.
