Enhancement of lipase production by ethyl methane sulfonate mutagenesis of soil fungal isolate

Authors

  • ` Shreya Department of Bioscience and Biotechnology, Banasthali Vidyapith, Rajasthan, India
  • Arun Kumar Sharma Department of Bioscience and Biotechnology, Banasthali Vidyapith, Rajasthan, India
  • ` Ritika Department of Bioscience and Biotechnology, Banasthali Vidyapith, Rajasthan, India
  • Nikita Bhati Department of Bioscience and Biotechnology, Banasthali Vidyapith, Rajasthan, India

DOI:

https://doi.org/10.14719/pst.2019.6.sp1.674

Keywords:

Ethyl methane sulfonate, fermentation processes, spores, Submerged fermentation, Solid State Fermentation, mutagenesis

Abstract

Strain improvement through random mutagenesis is an extremely developed practice and it plays an important role in the economic growth of microbial agitation processes. The present study comprises of genetic improvement of fungus isolated from petrol pump soil by ethyl methane sulfonate (EMS) mutagenesis for increased production of extracellular lipase. Random mutagenesis was performed by incubating the spore suspension of fungus with EMS at a concentration of 5% (v/v) and 8% (v/v) for 30, 60 and 90 min, respectively. Control set was prepared by incubating the spore suspension with sterile distilled water. Control plate showed maximum number of fungal colonies whereas number of colonies was decreased as we increased exposure time of EMS from 30 to 90 min. The lipase activity of six mutagenic strains and wild strain was determined under submerged fermentation and solid state fermentation. Treated culture named as EMS5%-60min (obtained after 60 min exposure with 5% EMS) exhibited maximum activity (32.09 ± 1.84 IU/ml/min) in SmF as compared to wild strain (8.77 ± 3.52 IU/ml/min) and another treated strain named as EMS8%-90min (obtained after 90 min exposure with 8% EMS) exhibited maximum activity (7.99 ± 0.12 IU/g/min) in SSF as compared to wild strain (1.77 ± 0.71 IU/g/min). The activity of mutagenic strain i.e. EMS5%-60min was increased to 365.90% as compared to 100% activity of wild strain in SmF whereas activity of another mutagenic strain i.e. EMS8%-90min was increased to 451.41% as compared to 100% activity of wild strain in SSF.

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Published

31-12-2019

How to Cite

1.
Shreya `, Sharma AK, Ritika `, Bhati N. Enhancement of lipase production by ethyl methane sulfonate mutagenesis of soil fungal isolate. Plant Sci. Today [Internet]. 2019 Dec. 31 [cited 2024 Nov. 4];6(sp1):600-6. Available from: https://horizonepublishing.com/journals/index.php/PST/article/view/674

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Research Articles