Identification of a novel strain of fungus Kalmusia italica from untouched marine soil and its heavy metal tolerance activity. Issue 2 (3rd April 2021)

• Record Type: Journal Article
• Authors: Sumathi, S.; Priyanka, V.; Krishnapriya, V.; Suganya, K.
• Is Part Of: Bioremediation journal. Volume 25:Issue 2(2021)
• Page Start: 91
• Page End: 107
• Publication Date: 2021-04-03
• Subjects: Biosorption -- fungus -- heavy metals -- Kalmusia italica -- marine soil; Bioremediation -- Periodicals; 628.5
• DOI: 10.1080/10889868.2020.1853029
• Languages: English
• ISSNs: 1088-9868

Abstract

Abstract: Heavy metal pollution is one of the most important environmental problems. Heavy metal discharge to the atmosphere has increased currently because of industrial activity and technological growth and creates serious problems for the climate, soil, and water supplies. Many conventional techniques were used for heavy metals separation and treatment. Micro-organisms play a significant role in the bioremediation of polluted soil and waste products from heavy metals. The most common heavy metal tolerant microbes are fungi and yeast. Fungal isolates are potential microbes that are tolerant of heavy metals. The research aims to isolate and classify the fungal species collected from the soil. The fungal isolates identified were tested for their biosorption property and the tolerance index of stressed strains was investigated by examining the minimum inhibitory concentration (MIC). The ability of the strain to remove heavy metals was investigated. Fungal isolates were molecularly identified using 18S rRNA sequencing. For the isolated fungus, BLAST and the phylogenetic trees were built and were known as Kalmusia italica . The effect of the isolates on the growth in the presence of heavy metals was determined by measuring the colony extension radius against control. The results showed that fungus was tolerant to a higher concentration of heavy metals and was able to absorb the heavy metals. MIC determination is indicative of the fact that the levels of tolerance to individual metals depend on the type of fungus. Biological treatment based on living fungi, which is cheaper and more environmentally friendly, has emerged as a good alternative technique to existing conventional methods for metal removal.