Satendra Singh, Sudha Kumari Yadav, Vadana Das, Gurudayal Ram and Pramod W Ramteke
Posters-Accepted Abstracts: Biol Syst Open Access
1-aminocyclopropane-1-carboxylate (ACC) deaminase promotes plant growth by sequestering and cleaving the ethylene precursor ACC to α-ketobutyrate and ammonium. Many plant growth promoting rhizobacteria producing 1-aminocyclopropane-1-carboxylate (ACC) deaminase as a source of nitrogen has an eminent role in plant nutrition. The present work deals with comparative analysis of ACCD producing plant growth-promoting rhizobacteria (PGPR) are Azospirillum lipoferum, Phyllobacterium brassicacearum, Pseudomonas fluorescens, Francisella tularensis subsp. holarctica OSU18 and Bacillus cereus. The sequence and phylogenetic analysis of ACCD producing PGPR species represents the common conserved domain belonging to the tryptophan synthase beta subunit-like PLP-dependent enzymes super family and closely related to each other. The predicted homology models of ACCD of PGPR have similar protein structure with similar folds often share similar function. This analysis represents the evolutionary conservation and same biochemical function of ACCD producing plant growth-promoting rhizobacteria. This analysis is very helpful to understand the biological function of PGPR species.