Degradative crystal–chemical transformations of clay minerals under the influence of cyanobacterium-actinomycetal symbiotic associations

Authors : Ekaterina IVANOVA, Natalia CHİZHİKOVA

Pages : 116-122

Doi:10.18393/ejss.79975

View : 57 | Download : 10

Publication Date : 2014-11-21

Article Type : Research Paper

Abstract :Cyanobacteria and actinomycetes are essential components of soil microbial community and play an active role in ash elements leaching from minerals of the parent rock. Content and composition of clay minerals in soil determine the sorption properties of the soil horizons, water-holding capacity of the soil, stickiness, plasticity, etc. The transformative effect of cyanobacterial–actinomycetes associations on the structure of clay minerals – kaolinite, vermiculite, montmorillonite, biotite and muscovite – was observed, with the greatest structural lattice transformation revealed under the influence of association in comparison with monocultures of cyanobacterium and actinomycete. The range of the transformative effect depended both on the type of biota insert ignore into journalissuearticles values(component composition of association); and on the crystal–chemical parameters of the mineral itself insert ignore into journalissuearticles values(trioctahedral mica – biotite, was more prone to microbial degradation than the dioctahedral – muscovite);. The formation of the swelling phase – the product of biotite transformation into the mica–vermicullite mixed-layered formation was revealed as a result of association cultivation. Crystal chemical transformation of vermiculite was accompanied by the removal of potassium insert ignore into journalissuearticles values(К);, magnesium insert ignore into journalissuearticles values(Mg); and aluminum insert ignore into journalissuearticles values(Al); from the crystal lattice. The study of such prokaryotic communities existed even in the early stages of the Earth`s history helps to understand the causes and nature of the transformations undergone by the atmosphere, hydrosphere and lithosphere of the planet.contribution of treatments on structure induces and model parameters are discussed in the paper.
Keywords : cyanobacterialactinomycetes symbiotic associations, clay minerals, biodegradation, dioctahedral and trioctahedral mica

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