Environmental Science & Technology,
Год журнала:
2023,
Номер
58(1), С. 510 - 521
Опубликована: Дек. 15, 2023
Fluorinated
liquid
crystal
monomers
(FLCMs)
have
been
suggested
as
emerging
contaminants,
raising
global
concern
due
to
their
frequent
occurrence,
potential
toxic
effects,
and
endurance
capacity
in
the
environment.
However,
environmental
fate
of
FLCMs
remains
unknown.
To
fill
this
knowledge
gap,
we
investigated
aerobic
microbial
transformation
mechanisms
an
important
FLCM,
4-[difluoro(3,4,5-trifluorophenoxy)methyl]-3,
5-difluoro-4′-propylbiphenyl
(DTMDPB),
using
enrichment
culture
termed
BG1.
Our
findings
revealed
that
67.5
±
2.1%
initially
added
DTMDPB
was
transformed
10
days
under
optimal
conditions.
A
total
14
products
obtained
a
series
reactions
(e.g.,
reductive
defluorination,
ether
bond
cleavage,
demethylation,
oxidative
hydroxylation
aromatic
ring
opening,
sulfonation,
glucuronidation,
O-methylation,
thiolation)
were
identified.
Consortium
BG1
harbored
essential
genes
could
transform
DTMDPB,
such
dehalogenation-related
[e.g.,
glutathione
S-transferase
gene
(GST),
2-haloacid
dehalogenase
(2-HAD),
nrdB,
nuoC,
nuoD];
hydroxylating-related
hcaC,
ubiH,
COQ7;
opening-related
ligB
catE;
methyltransferase
ubiE
ubiG.
Two
DTMDPB-degrading
strains
isolated,
which
are
affiliated
with
genus
Sphingopyxis
Agromyces.
This
study
provides
novel
insight
into
FLCMs.
The
implications
for
development
bioremediation
strategies
aimed
at
addressing
sites
contaminated
Environmental Science & Technology,
Год журнала:
2024,
Номер
58(22), С. 9875 - 9886
Опубликована: Май 9, 2024
Zinc
oxide
nanoparticles
(ZnO
NPs)
cause
biotoxicity
and
pose
a
potential
ecological
threat;
however,
their
effects
on
plant
metabolism
eco-corona
evolution
between
NPs
organisms
remain
unclear.
This
study
clarified
the
molecular
mechanisms
underlying
physiological
metabolic
responses
induced
by
three
different
ZnO
with
sizes
hydrophobicity
in
sprouts
(
Journal of Chromatography Open,
Год журнала:
2024,
Номер
6, С. 100168 - 100168
Опубликована: Авг. 6, 2024
This
review
is
aimed
at
providing
an
overview
of
the
application
liquid
chromatography-high
resolution
mass
spectrometry
(LC-HRMS)
in
metabolomic
study
cereal
grains,
with
special
emphasis
on
wheat,
maize,
barley,
and
rice.
The
significant
role
untargeted
metabolomics
identifying
quantifying
metabolites
highlighted,
thereby
elucidating
biochemical
pathways
involved
flavour,
disease
detection,
development
disease-resistant
varieties.
use
stable
isotope
labelling
for
enhanced
compound
annotation
exploration
metabolic
plant
defence
mechanisms
stress
resilience
are
also
discussed.
integration
cutting-edge
analytical
techniques
becoming
fundamental
importance
to
enhance
understanding
reconfigurations
response
various
conditions,
contributing
improvement
quality
ensuring
food
safety.
potential
health
benefits
phytochemicals
human
nutrition
specific
as
biomarkers
crop
resistance
susceptibility
diseases,
pests,
abiotic
stresses
Overall,
valuable
insights
into
advancement
chemistry
its
applications
agricultural
science
provided
by
this
review.
