BIOTECHNOLOGICAL APPROACHES
TO SOLVING THE PROBLEM OF
SOIL AND WATER POLLUTION
WITH HEAVY METALS
Created by Hella
, Toxic effects of Pb and Cu on living organism
Lead compounds have
Copper, as
been used by mankind
component o
since the earliest
circuits, w
civilizations, but their toxic
conductors, is
properties were
most valuabl
discovered relatively late,
metals.
in the late Middle Ages.
- Destabilizes me
- Lead ions inhibit seed integrity;
germination; - leads to the forma
- cause oxidative stress; ROS;
- accumulate in the gills of - causes hypoxia in fish
fish; - provokes liver fibrosis
- cause hypocalcemia; - disrupts cho
- inhibit erythropoiesis metabolism
, Effects of Cr and Ni accumulation
Plants have different sensitivities to chromium compounds. High
concentrations of trivalent chromium can inhibit plant growth and
development, and Cr(VI) inhibits the morphological, physiological
and metabolic activity of plants and can even lead to their
complete death. Chromium is a carcinogen and significantly slows
down growth, reduces the survival rate of embryos in many fish
species, accumulating primarily in the gills, spleen, muscles and
kidneys. It is a multisystem toxicant and can affect several systems
at once, and also provokes genotoxicity.
Ni is considered an essential element for plant gro
development, but at low concentrations (0.05-10 m
weight), at high concentrations it becomes toxic: it slows
accumulation of biomass, inhibits photosynthesis, causes
and necrosis of leaves and shoots. Marine organisms
sensitive to the content of dissolved nickel in w
freshwater ones. In bony fish, Ni acts as a respiratory to
invertebrates, Ni appears to be an ionoregulatory tox
disrupts magnesium homeostasis. IARC (International A
Research on Cancer) classified soluble and insolub
compounds as group 1 (carcinogenic to humans), and
alloys as group 2B (possibly carcinogenic to humans).
, Lead bioremediation
One of the most common methods of lead
bioremediation is the use of Pb-resistant A promising method for detoxifying for
microorganisms. Bacteria, fungi and algae bind
lead at different levels through a variety of cultivation of Pleurotus ostreatus, which can
mechanisms that contribute to the uptake of and transform into insoluble forms up to 75%
metal ions. These include biosorption on cell concentration of lead in the environment.
walls and entrapment in the extracellular
capsule, precipitation, release of metal ions
outside the cell, accumulation of metal ions in a
less toxic state and chemisorption of metal ions
inside the cell.
Lactobacillus acidophilus
ATCC4356
Leuconostoc mesenteroides
TO SOLVING THE PROBLEM OF
SOIL AND WATER POLLUTION
WITH HEAVY METALS
Created by Hella
, Toxic effects of Pb and Cu on living organism
Lead compounds have
Copper, as
been used by mankind
component o
since the earliest
circuits, w
civilizations, but their toxic
conductors, is
properties were
most valuabl
discovered relatively late,
metals.
in the late Middle Ages.
- Destabilizes me
- Lead ions inhibit seed integrity;
germination; - leads to the forma
- cause oxidative stress; ROS;
- accumulate in the gills of - causes hypoxia in fish
fish; - provokes liver fibrosis
- cause hypocalcemia; - disrupts cho
- inhibit erythropoiesis metabolism
, Effects of Cr and Ni accumulation
Plants have different sensitivities to chromium compounds. High
concentrations of trivalent chromium can inhibit plant growth and
development, and Cr(VI) inhibits the morphological, physiological
and metabolic activity of plants and can even lead to their
complete death. Chromium is a carcinogen and significantly slows
down growth, reduces the survival rate of embryos in many fish
species, accumulating primarily in the gills, spleen, muscles and
kidneys. It is a multisystem toxicant and can affect several systems
at once, and also provokes genotoxicity.
Ni is considered an essential element for plant gro
development, but at low concentrations (0.05-10 m
weight), at high concentrations it becomes toxic: it slows
accumulation of biomass, inhibits photosynthesis, causes
and necrosis of leaves and shoots. Marine organisms
sensitive to the content of dissolved nickel in w
freshwater ones. In bony fish, Ni acts as a respiratory to
invertebrates, Ni appears to be an ionoregulatory tox
disrupts magnesium homeostasis. IARC (International A
Research on Cancer) classified soluble and insolub
compounds as group 1 (carcinogenic to humans), and
alloys as group 2B (possibly carcinogenic to humans).
, Lead bioremediation
One of the most common methods of lead
bioremediation is the use of Pb-resistant A promising method for detoxifying for
microorganisms. Bacteria, fungi and algae bind
lead at different levels through a variety of cultivation of Pleurotus ostreatus, which can
mechanisms that contribute to the uptake of and transform into insoluble forms up to 75%
metal ions. These include biosorption on cell concentration of lead in the environment.
walls and entrapment in the extracellular
capsule, precipitation, release of metal ions
outside the cell, accumulation of metal ions in a
less toxic state and chemisorption of metal ions
inside the cell.
Lactobacillus acidophilus
ATCC4356
Leuconostoc mesenteroides
