Release:Bulletin of Tyumen State University. Ecology (№12). 2013
About the authors:Marina I. Dinu, Cand. Chem. Sci, research assistant, Institute of Geochemistry and Analytical Chemistry, named after V.I. Vernadskiy, Russian Academy of Sciences Vitaliy Y. Khoroshavin, Cand. Geog. Sci., Head of Department of Physical Geography and Ecology, Institute of Mathematics, Natural Sciences and Information Technologies, Tyumen State University
Abstract:Humic substances are one of the main accumulators for carbonin the biosphere. They control the global biogeochemical cycle of organic carbon. They also play a crucial role in reduction-oxidation, sorption, complexation, transfer of contaminants and microelements, plant growth. Humic substances are found in the soil and take part in its formation. Humic compounds are important for many natural processes. Saprotrophic fungi actively contribute to humic compounds degradation.The most important representatives are basidiomycetes and ascomycetes. Basidial fungi take part in the process of persistent organics destruction and mineralization, while ascomycetes basically modify and polarize humic substances. The degradation mechanism is connected with a wide spectrum of nonspecific oxidative enzymes, especiallythe lignolytic exoenzymes-destructors: lignin-peroxidase, manganese-peroxidase, laccase. The article observes the important and scarcely studied issues of humic substance biodegradation by fungi enzymes.
1. Vernadskij, V.I. Trudy po biogeohimii i geohimii pochv [Soil biogeochemistry and geochemistry]. Moscow: Nauka, 1992. 437 p. (in Russian).
2. Danchenko, N.N. Heavy metals, polyaromatic carbohydrates and pesticides detoxication by humic substance in water and soil [Detoksikacija tjazhelyh metallov, poliaromaticheskih uglevodov i pesticidov gumusovymi veshhestvami v vodah i pochvah]. M-ly mezhdunarodnogo kongressa «Voda: jekologija i tehnologija» (Proc. of the International Congress «Water: ecology and technology»). Moscow, 1994. Pp. 1136-1143. (in Russian).
3. Orlov, D.S. Gumusovye kisloty [Humic acids]. Moscow: Moscow State Unversity publ., 1974. 332 p. (in Russian).
4. Tyurin, I.V. Organicheskoe veshhestvo pochv i ego rol' [Soil organic matter and its role]. Moscow, 1965. 319 p. (in Russian).
5. Dehorter, B. Extracellular enzyme activities during humic acid degradation by the white rot fungi Phanerochaete chrysosporium and Trametes versicolor // FEMS Microbiology Letters. 1992. V. 94. № 3. Pp. 209–215
6. Esham, E.C., Ye W. Identi¢cation and characterization of humic substances-degrading bacterial isolates from an estuarine environment // FEMS Microbiology Letters. 2000. V. 34.
7. Filip, Z., Tesarova, M. Microbial degradation and transformation of humic acids from permanent meadow and forest soils // International Biodeterioration and Biodegradation. 2004. V. 54. Pp. 225-231.
8. O’Brien. The impact of Lactobacillus plantarum TUA1490L supernatant on in vitro rumen methanogenesis and fermentation // Anaerobe. 2013. V. 22. Pp. 137-140.
9. Carney, D. Selective stimulation of small cell lung cancer clonal growth by bombesin and gastrin-releasing peptide // Regulatory Peptides. 1987. V. 19. P. 103.
10. Huang, Z., Liers, C. et all. Depolymerization and solubilization of chemically pretreated powder river basin subbituminous coal by manganese peroxidase (MnP) from Bjerkandera adusta // Fuel. 2013. V. 112. Pp. 295-301.
11. Higuchi, T. Microbial degradation of lignin: role of lignin peroxidase, manganese peroxidase, and laccase // Proceedings of the Japan Academy. Series B Physical and Biological Sciences 2004. V. 80. Pp. 204-214.
12. Salar-Behzadi. Impact of heat treatment and spray drying on cellular properties and culturability of Bifidobacterium bifidum BB-12 // Food Research International. 2013. V. 54.
13. Burges, A., Latter, P. Decomposition of humic acid by fungi // Nature. 1960. V. 186.
14. Hurst, H.M., Burges, A., Latter, P. Some aspects of the biochemistry of humic acid decomposition by fungi // Phytochemistry. 1962. V. 1. Pp. 227-231.
15. Cohen, M.S., Gabriele, P.D. Degradation of coal by the fungi Polyporus versicolor and Poria monticola // Applied and Environmental Microbiology. 1982. V. 44. Pp. 23-27.
16. Ralph, J.P., Catcheside DEA. Transformations of low rank coal by Phanerochaete chrysosporium and other wood-rot fungi // Fuel Processing Technology. 1997. V. 52. P. 79-93.17. Catcheside, DEA; Ralph, J.P. Biological processing of coal // Applied Microbiology and Biotechnology. 1999. V. 52. Pp. 16-24.