Beneficial Plant-Microbes Interactions: Biodiversity of Microbes from Diverse Extreme Environments and Its Impact for Crop Improvement

  • Priyanka Verma
  • Ajar Nath YadavEmail author
  • Vinod Kumar
  • Dhananjaya Pratap Singh
  • Anil Kumar Saxena


Microbes are capable of colonizing the rhizosphere and phyllosphere as well as living inside the plant tissues as endophytes. The microbiomes associated with the crops have the ability to produce phytohormones (indoleacetic acid and gibberellic acid); solubilize (phosphorus, potassium and zinc) and bind nutrients, besides eliciting plant defence reactions against pathogens; and also help in plant growth under harsh environments. The biodiversity of plant growth-promoting (PGP) microbes have been illustrated by different genera and species and their mechanisms of action for the following different phyla of domain Archaea, Bacteria and Eukarya:Actinobacteria,Ascomycota,Bacteroidetes,Basidiomycota,Crenarchaeota,Euryarchaeota,Firmicutes andProteobacteria (α/β/γ/δ). This book chapter intends to present research results obtained so far concerning the application of beneficial microbes as PGP microbes and their potential biotechnological application to increase the plant growth and yields and soil health. The diverse range of activities as well as the number of microbes sorted out in different culture collections around the world, may provide an important resource to rationalize the use of chemical fertilizers in agriculture. There are many microbial species that act as PGP microbes, described in the literature as successful for improving plant growth and health. However, there is a gap between the mode of action/mechanism of the PGP microbes for plant growth and the role of the PGP microbes as biofertilizers. Hence, this book chapter bridges the gap mentioned and summarizes the mechanism of PGP microbes as biofertilizers for agricultural sustainability.


Biodiversity Biofertilizers Extreme environments Microbiome Plant growth promotion 



The authors duly acknowledge the Department of Biotechnology, Govt. of India, for the financial support provided (Grant No. BT/AGR/BIOFORTI/PHII/NIN/2011); Ministry of Food Processing Industries (MoFPI), Govt. of India, grant for the infrastructural facility development (F.No. 5-11/2010-HRD); and Vice Chancellor, Eternal University, for providing the motivation and research infrastructure.


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Copyright information

© Springer Nature Singapore Pte Ltd. 2017

Authors and Affiliations

  • Priyanka Verma
    • 1
  • Ajar Nath Yadav
    • 2
    Email author
  • Vinod Kumar
    • 2
  • Dhananjaya Pratap Singh
    • 3
  • Anil Kumar Saxena
    • 3
  1. 1.Department of Microbiology, Akal College of Basic SciencesEternal UniversitySirmourIndia
  2. 2.Microbial Biotechnology Laboratory, Department of Biotechnology, Akal College of AgricultureEternal UniversitySirmourIndia
  3. 3.ICAR-National Bureau of Agriculturally Important MicroorganismsMauIndia

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