module 6

• Acidophiles thrive under highly acidic conditions such as


  • Marine volcanic vents
  • Acidic sulfur springs
  • Acid rock drainage
  • Acid mine drainage
• Four Novel Heterotrophs found in Lake Lonar


  • Nitritalea halakaliphila
  • Indibacter alkaliphilus
  • Cecembia lonarensis
  • Georgenia satyanarayanai
• Acidophile microorganisms generally require intracellular neutral pH but the mechanism of homeostasis is not well understood
• Heterotrophic bacteria isolated from Lonar Lake water and sediment samples showed highest diversity and abundance within the phyla of Firmicutes, Gammaproteobacteria, Actinobacteria, Alphaproteobacteria, and Betaproteobacteria
• Acidophiles have adapted themselves by maintaining their cellular pH neutral and acquiring resistance towards metals
• Novel methylotroph Methylophaga lonarensis was found in Lake Lonar
• Sediment-based enrichments supplemented with C1 substrates and C2 substrates yielded isolates related to

  • Halomonas
  • Alkalimonas
  • Pseudomonas
  • Bacillus
  • Methylophaga
  • Paracoccus
  • Rhodobaca
  • Idiomarina
• Physical and Chemical Parameters of Lonar Lake Water

  • Heterotrophic Bacteria in Lonar Lake
  • Bacterial Species in Lake Lonar Sediments
• Members of the Genus of Microorganisms in Acidic Aquatic Environment

  • Acidobacterium
  • Leptospirillum
  • Picrophilus
  • Ferroplasma
• Biofloc technology (BT)


  The use of aggregates of bacteria, algae, or protozoa, held together in a matrix along with particulate organic matter for the purpose of improving water quality, waste treatment and disease prevention in intensive aquaculture systems
• Novel methylotroph


  • Methylophaga lonarensis
• C1 substrates


  methane, mathanol, methylamine and dimethylsulfide
• C2 Substrates


  ethanol and acetate
• Biological processes in biofloc cultivation