A Note on Agricultural Importance of PHAs Producing Bacillus sp. on Plant Growth Promoting Activities

Abstract

Polyhydroxyalkanoates (PHAs) producing microbes which have been reported to exist in several ecological niches those generally exposed to abundant organic matter or growth limited (essential nutrients limitation) conditions such as rhizospheric region of plants, agricultural wastes and activated sludges of treatment plants. Some of the PHAs producers also synthesize extracellular by-products like bio-surfactant (rhamnolipids), extracellular polymeric substances and also help in plant growth by showing PGPR activities. PHAs producer contributes good shelf life period to the microbes. So, bacteria accumulating such fatty acid granules (PHAs) with PGPR activities can be considered as best biofertilizer in Agricultural industry. In this study we are focusing on few strains of Bacillus sp. that bestow the presence of PHAs granules in cytosol and as well as plant growth promoting activities.