Frontiers in Bioengineering and Biotechnology,
Год журнала:
2021,
Номер
9
Опубликована: Март 9, 2021
Low
molecular
weight
polycyclic
aromatic
hydrocarbons
(PAHs)
like
naphthalene
and
substituted
naphthalenes
(methylnaphthalene,
naphthoic
acids,
1-naphthyl
N
-methylcarbamate,
etc.)
are
used
in
various
industries
exhibit
genotoxic,
mutagenic,
and/or
carcinogenic
effects
on
living
organisms.
These
synthetic
organic
compounds
(SOCs)
or
xenobiotics
considered
as
priority
pollutants
that
pose
a
critical
environmental
public
health
concern
worldwide.
The
extent
of
anthropogenic
activities
emissions
from
coal
gasification,
petroleum
refining,
motor
vehicle
exhaust,
agricultural
applications
determine
the
concentration,
fate,
transport
these
ubiquitous
recalcitrant
compounds.
Besides
physicochemical
methods
for
cleanup/removal,
green
eco-friendly
technology
bioremediation,
using
microbes
with
ability
to
degrade
SOCs
completely
convert
non-toxic
by-products,
has
been
safe,
cost-effective,
promising
alternative.
Various
bacterial
species
soil
flora
belonging
Proteobacteria
(
Pseudomonas
,
Pseudoxanthomonas
Comamonas
Burkholderia
Novosphingobium
),
Firmicutes
Bacillus
Paenibacillus
Actinobacteria
Rhodococcus
Arthrobacter
)
displayed
SOCs.
Metabolic
studies,
genomic
metagenomics
analyses
have
aided
our
understanding
catabolic
complexity
diversity
present
simple
life
forms
which
can
be
further
applied
efficient
biodegradation.
prolonged
persistence
PAHs
led
evolution
new
degradative
phenotypes
through
horizontal
gene
transfer
genetic
elements
plasmids,
transposons,
phages,
islands,
integrative
conjugative
elements.
Systems
biology
engineering
either
specific
isolates
mock
community
(consortia)
might
achieve
complete,
rapid,
bioremediation
synergistic
actions.
In
this
review,
we
highlight
metabolic
routes
diversity,
makeup
cellular
responses/adaptations
by
naphthalene-degrading
bacteria.
This
will
provide
insights
into
ecological
aspects
field
application
strain
optimization
bioremediation.
