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Table 6 Azospirillum TCS orthologues with inferred biological functions

From: Genome-wide survey of two-component signal transduction systems in the plant growth-promoting bacterium Azospirillum

Genea Labelb BBH (% amino acid identity)c Putative functions Relevant feature References
chvG chvI AZOLI_2965 AZOLI_2966 Rhodospirillum centenum (60 %) Rhodospirillum centenum (84 %) Virulence and TVISS regulation in A. tumefaciens Biofilm and motility in S. meliloti Conserved in members of the α-proteobacteria [68] [66]
phoR phoB AZOLI_3010 AZOLI_3109 Rhodospirillum centenum (54 %) Rhodopseudomonas palustris (65 %) Virulence and survival in Vibrio cholerae Biofilm formation in P. fluorescens phoB located upstream a putative pst ABC transporter [69] [64]
dctB dctD AZOLI_p10629 AZOLI_p10628 Arhodomonas aquaeolei (60 %) Pseudomonas fuscovaginae (43 %) Root colonization and beneficial properties in P. chlororaphis C4-dicarboxylate transport and nitrogen fixation in rhizobia Located upstream of a putative dctA transporter [70] [71]
ntrB ntrC AZOLI_1342 AZOLI_1343 Rhodospirillum centenum (73 %) Rhodospirillum centenum (83 %) Regulation of nitrogen metabolism, nitrate utilization and ammonium transport Clustered with ntrXY [59]
ntrX ntrY AZOLI_1344 AZOLI_1345 Rhodospirillum centenum (62 %) Rhodospirillum centenum (83 %) Regulation of nitrogen metabolism, nitrate utilization and ammonium transport Clustered with ntrBC [60]
kdpD kdpE AZOLI_p20517 AZOLI_p20518 Pseudaminobacter salicylatoxidans (76 %) Rhodospirillum bacterium URHD0088 (64 %) Potassium transport and virulence in S. aureus Osmoadaptation and symbiosis in S. meliloti Located next to kdpABC encoding a potassium pump [72] [61]
lytS lytR AZOLI_p50421 AZOLI_p50422 Rhodospirillum rubrum (74 %) Rhodospirillum rubrum (73 %) Carbon control network in E. coli Virulence in S. aureus Located next to genes encoding a putative MDR efflux pump [73] [67]
flcA AZOLI_1403 Rhodospirillum centenum (65 %) Flocculation and root colonization in A. brasilense Orphan RR [74]
bphP1 AZOLI_p20424 Stenotrophomonas maltophilia (53 %) Light-stress tolerance and motility in A. brasilense Organized in a triad of TCS (HyHK-RR-Bph1) [48]
  1. aFor each pair, the first gene encodes the HK whereas the second gene encodes the RR
  2. bLabels refer to genes of A. lipoferum 4B. Labels of the orthologues of other Azospirillum strains can be found in Additional file 3: Table S2; Additional file 4: Table S3; Additional file 5: Table S4 and Additional file 6: Table S5
  3. c A. lipoferum 4B amino acid sequences were used as queries
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BMC Genomics

ISSN: 1471-2164

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