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Biological activities and metabolite profiling of Chaetomium sp. R1C1, an endophytic fungus from Chromolaena odorata of Manipur

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Abstract

The association of endophytic fungi with plants was recorded from an early stage of evolution. Endophytic fungi of medicinally important plants are given importance as they mimic the synthesis of bioactive compounds by the host plant. Chromolaena odorata is a wild medicinal plant used in ethnomedicine by different communities. From the root part of C. odorata, an endophytic fungus, Chaetomium sp. R1C1, was isolated, and its biological activities were evaluated. The ITS-rDNA gene sequencing of Chaetomium sp. R1C1 showed 99.21% similarity with Chaetomium globosum. Chaetomium sp. R1C1 was found to secrete protease, amylase, lipase, and cellulose and also produce ammonia. The isolate shows strong antifungal activities against all the nine tested phytopathogens, with the highest inhibition against U. virens (97.45%), followed by A. flavus (94.70%), C. lunata (89.09%), A. brassicicola (78.41%), F. oxysporum (77.71%), R. solani (70.27%), C. capsici (64.41%), A. niger (57.06%), and A. alternata (45.35%). The antibacterial activity evaluated using the agar-well diffusion method and 96-well microtitre method shows that the crude extract was more efficient against gram-negative bacteria, with the highest activity against S. typhi. The DPPH radical scavenging activity shows inhibition of 60.18% and an IC50 value of 85.88 µg/mL, which makes it a strong antioxidant. GC-MS and LC-MS are powerful tools employed to reveal the compounds present in the secondary metabolite of Chaetomium sp. R1C1. This study highlights the importance and applications of the endophytic fungus Chaetomium sp. R1C1 in the fields of agriculture, medicine, and industries.

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Abbreviations

ITS-rDNA:

Internal transcribed spacer-ribosomal deoxyribonucleic acid

GC-MS:

Gas chromatography–mass spectrometry

LC-MS:

Liquid chromatography–mass spectrometry

DPPH:

2, 2-Diphenyl-1-picrylhydrazyl

IC50 :

50% inhibitory concentration

IAA:

Indole acetic acid

FTIR:

Fourier-transform infrared spectroscopy

PDA:

Potato dextrose agar

NFCCI:

National Fungal Culture Collection of India

CTAB:

Cetyltrimethylammonium bromide

NCBI:

National Center for Biotechnology Information

BLAST:

Basic local alignment search tool

GYPA:

Glucose yeast peptone agar

CMC:

Carboxymethyl cellulose

HCN:

Hydrogen cyanide

NH3 :

Ammonia

PO4 :

Phosphate

ITCC:

Indian Type Culture Collection

DMSO:

Dimethyl sulfoxide

MTCC:

Microbial Type Culture Collection

MHA:

Muller-Hinton agar

MIC:

Minimum inhibitory concentration

NMR:

Nuclear magnetic resonance

XRD:

X-ray diffraction

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Acknowledgements

We would like to acknowledge Guwahati Biotech Park, Guwahati, for hel** with GC-MS and LC-MS analysis.

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Correspondence to Kistu Singh Nongthombam.

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Nongthombam, K.S., Mutum, S.S. Biological activities and metabolite profiling of Chaetomium sp. R1C1, an endophytic fungus from Chromolaena odorata of Manipur. Biologia 79, 643–656 (2024). https://doi.org/10.1007/s11756-023-01584-3

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  • DOI: https://doi.org/10.1007/s11756-023-01584-3

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