Living organisms require trace amounts of some heavy metals including copper, lead, magnesium, vanadium, zinc etc. Human activities have influenced bio-chemical and geological cycles. Metal ions become toxic in nature when they are beyond tolerance limit. In aquatic ecosystem, fishes and microbes have close, intimate and unseparated contact from the embryonic to adult stage. Bioremediation is therefore an eco-friendly and efficient method of reclaiming environments contaminated with heavy metals by making use of the inherent biological mechanisms of microorganisms and plants to eradicate hazardous contaminants. Microbes play a key role in controlling the speciation and cycling of metals in water. Bio-availability, toxicity and reactivity of metals is greatly influenced to have a better understanding of the major factors that link microbial activity to the bio-geo-chemistry of metals. Micro-organism and other natural products plants and animals and there by- products capable of cycling metals for bio-remediation of contaminated site without any side effect on environment. This investigation discusses the toxic effects of heavy metal pollution and the mechanisms used by microbes for environmental remediation. It also emphasized the importance of modern techniques and approaches in improving the ability of microbial enzymes to effectively degrade heavy metals at a faster rate, highlighting recent advances in microbial bioremediation for the removal of heavy metals from the environment.
*Correspondence to: Abdul Rahman, Shahid Beheshti University Medical Sciences, Tehran, Iran, E-mail: abdulrahman954@gmail.com Received: June 04, 2021; Accepted: June 19, 2021; Published: June 27, 2021 Citation: Rahman A (2021) Microbial Pathogenesis and Photobiology. Journal of Microbial & Biochemical Technology. 13:.6.35248/19485948.21.13.473. Copyright: © 2021 Rahman A. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. INTRODUCTION
This article summarises regarding microbial transformation of steroids which contains different types like Oxidation- in which the alcohols are oxidised to form ketones, Hydroxylation- in this the mycobacterium flavobacterium dehydrogenans helps in hydrolysis, Dehydrogenation, Epoxidations which is a sparse process, Ring a Aromatization, Oxidation to ketone through hydroxylation, Ring a Aromatization ,Degradation of steroid nucleus, Oxidation of alcohols to ketone, Side chain cleavage of steroids, Decarboxylation of acids, Reduction in this the Aldehyde and ketone to alcohol, Hydrolysis, Isomerisation, Resolution of racemic mixture, Other reactions, Esterification were explained.
Every person has their own microbiome, which is distinct from everyone else's. Each is made up of a variety of bacterial, fungal, and viral species that can be found on all body surfaces, including the skin, mucous membranes, and the gastrointestinal system in particular.
Numerous infectious illnesses produced by bacteria that seldom cause disease in normal, healthy immunocompetent hosts emerged in the late twentieth century. The development of these illnesses demonstrates that a conventional notion of pathogenicity and virulence fail to account for the reality that microbial pathogenesis is influenced by both the bacterium and the host. To overcome this barrier to studying host–microbe interactions, we offer the 'damage-response' framework, a novel theoretical paradigm for understanding microbial pathogenesis.
