Atmosphere,
Journal Year:
2024,
Volume and Issue:
15(10), P. 1165 - 1165
Published: Sept. 29, 2024
The
knowledge
of
the
deposition
fate
ambient
polycyclic
aromatic
hydrocarbons
(PAHs)
on
plant
leaves
is
limited.
To
fill
in
this
gap,
study
strives
to
observe
intermolecular
complex
between
and
epicuticular
wax
using
laser
scanning
microscopy.
Epicuticular
refers
a
type
organic
mixture
that
covers
outermost
layer
leaves.
20
tree
species
were
collected
Beijing
July
2023.
concentrations
31
PAHs
quantified
by
gas
chromatography–mass
spectrometry.
Furthermore,
complexes
found
with
fluorescence
spectrofluorometer
levels
total
across
ranged
from
12.4
ng
g−1
68.4
g−1.
Differences
amounts
observed,
which
may
be
ascribed
differences
leaf
surface
types.
higher
concentration
low-molecular-weight
was
compared
high-molecular-weight
PAHs.
identified
formation
new
emission
at
an
excitation
wavelength
340
nm
relative
We
used
microscopy
405
for
stomata
This
situ,
provides
important
information
about
Journal of Geophysical Research Biogeosciences,
Journal Year:
2024,
Volume and Issue:
129(6)
Published: June 1, 2024
Abstract
Understanding
the
metabolic
characteristics
and
controlled
geochemical
factors
of
functional
microorganisms
in
petroleum‐contaminated
areas
at
different
locations
is
pivotal
for
enhancing
pollutant
removal
strategies.
To
address
existing
research
gap
this
domain,
we
employed
stable‐isotope‐probing
(SIP)
with
multi‐isotope
labeling
substrates,
combined
16S
amplicon
sequencing,
metagenomic
factor
analysis.
Utilizing
n
‐hexadecane
phenanthrene
as
model
compounds,
our
study
revealed
location‐specific
differences
composition
microorganisms.
Despite
these
variances,
key
players
such
Pseudomonas
,
Marinobacter
Alcanivorax
Ochrobactrum
Sphingomonas
consistently
emerged
active
degraders
and/or
phenanthrene.
Several
genera,
including
Nitriliruptoraceae
Sphingobacterium
demonstrated
versatility
by
effectively
degrading
both
contaminants.
SIP‐metagenomic
binning
facilitated
acquisition
genomes
from
degraders,
sp.,
Shinella
sp.
This
enabled
a
comprehensive
analysis
petroleum
hydrocarbon
degradation
pathways
genes,
encompassing
PAH
dioxygenase
alkB
phthalate,
salicylate‐related
pathways.
Environmental
variation
partitioning
that
oil
pollution
significantly
influences
microbial
community
(12%),
followed
available
potassium
nitrogen.
Geochemical
parameters
geographic
location
independently
explained
14%
21%
total
variations,
respectively.
Intriguingly,
more
than
half
(51%)
structure
remains
unexplained,
possibly
due
to
unmeasured
environmental
variables.
Our
contributes
valuable
insights
into
situ
bioremediation
mechanism
soil,
elucidating
influencing
structures
across
locations.
These
findings
provide
vital
theoretical
reference
regulation
diverse
contexts.
