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Biologia




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Volume 69, Issue 1

Issues

Cholinesterase inhibitory potential of different Alternaria spp. and their phylogenetic relationships

Bahaderjeet Singh / Jyoti Bhagat / Bhupinder. Chadha / Amarjeet Kaur
Published Online: 2013-11-15 | DOI: https://doi.org/10.2478/s11756-013-0294-z

Abstract

Acetylcholinesterase (AChE) and butyrylcholinesterase (BChE) inhibitors are used for the treatment of various disorders related to decline in acetylcholine levels in the brain by inhibiting the activity of the neurotransmitter AChE. The present study reports the potential of endophytic Alternaria spp. for their potential to produce cholinesterase inhibitors active against both acetylcholine and butyrylcholine. Twenty-nine isolates belonging to Alternaria spp. were isolated from different plants and screened. Variation with respect to inhibitor production was observed in different isolates. Out of 29 cultures screened, good cholinesterase (both AChE and BChE) inhibitory activity in range of 70–85% was observed in three isolates, whereas three showed only AChE inhibition. No correlation was observed in AChE and BChE inhibitor production. TLC bioautography for the inhibitor in the selected cultures evinced different Rf values of inhibitors indicating different nature of the compounds produced. In order to analyze evolutionary relationships between producer and non-producer strains, phylogenetic analysis of six producer and five non-producer strains was carried out using amplified ITS-I-5.8SrDNA-ITS-II region. Phylogenetic analysis revealed majority of the non-producer strains to be present on different clades indicating different evolutionary origins. The dual cholinesterase inhibitory activity and the diversity in the inhibitors produced by different isolates could prove to be novel sources of pharmaceutical as well as agriculturally important biomolecules after purification and characterization.

Keywords: endophytic fungi; cholinesterase inhibitors; Alternaria spp.

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About the article

Published Online: 2013-11-15

Published in Print: 2014-01-01


Citation Information: Biologia, Volume 69, Issue 1, Pages 10–14, ISSN (Online) 1336-9563, DOI: https://doi.org/10.2478/s11756-013-0294-z.

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© 2013 Slovak Academy of Sciences. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License. BY-NC-ND 3.0

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