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VOL. 6, ISSUE 5 (2021)
Antagonistic activity and phytochemical screening of endophytic fungi isolated from medicinal plants
Authors
N Uma Maheswari, P Kaviyarasi
Abstract
Endophytes represent a promising source of biologically active metabolites for pharmaceutical and agricultural application. They are harmless in most plant species, and secreting growth hormones for the development of host plant. The present study was designed to determine antagonistic activity of endophytic fungi from selected medicinal plants, screening of phytochemical compounds, synthesis of silver nanoparticles and enzymes also extracted. Totally 15 medicinal plants were selected from STET herbal garden, Sundarakkottai, Mannargudi. Leaves of the plants were used for this study. The collected leaves of plants namely Azadirachta indica L, Mentha spicata L, Ocimum tenuiflonum L, Acalypha indica L, Solanum virginianum L, Chrysopogon ziznioides L, Trachyspermum ammi L, Phyllanthus niruri L, Centella asiatica L, Trigonella fornumgraecum L, Andrographis paniculata L, Vitex trifolia L, Sesbania grandiflora L, Justicia adhatada L, Clitoria ternatea L. The endophytic fungi were islated from these plants namely Aspergillus flavus, Aspergillus fumigatus, Aspergillus niger, Aspergillus terreus, Alternaria tenuis, Rhizopus, Penicillum, Helminthosporum, Helminthosporum oryzea, Fusarium. Colonization frequency was high nearly 9.23% for Aspergillus niger. Relative percentage was high in Curvularia vermiformi 23.52%. Due to dominant colonization frequency of A.niger was subjected to Antagonistic activity of the bacterial species namely Staphylococcus aureus (14±0.3) followed Bacillus subtilis (11±0.3) but silver nanoparticles synthesis level was very low in Aspergillus niger. Extracellular enzymes were also extracted from Aspergillus niger namely phosphatase, cellulase amylase, protease, pectinase, lipase and laccase. (80%.60%.70%.63.33%,30%,23.33% and 10%).
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Pages:1271-1276
How to cite this article:
N Uma Maheswari, P Kaviyarasi "Antagonistic activity and phytochemical screening of endophytic fungi isolated from medicinal plants ". International Journal of Botany Studies, Vol 6, Issue 5, 2021, Pages 1271-1276
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