Extensive
foliar
shedding
in
monoculture
soybeans
post-anthesis
negatively
impacts
yield,
whereas
relay
strip
intercropping
prolongs
leaf
area
duration,
enhancing
productivity.
However,
little
is
known
about
the
causes
of
and
its
impact
on
physiological
functions
plasticity
source
sink
organs,
we
conducted
a
4-year
field
experiment
leaf-removal
simulations
intercropped
soybeans.
Results
revealed
that
experienced
severe
self-shading
defoliation,
while
maintained
better
light
conditions,
supporting
higher
area,
nodule
numbers,
carbon
allocation.
Increasing
removal
initially
increased
but
eventually
reduced
it.
Rubisco
sucrose
phosphate
synthase
(SPS)
activity,
as
well
sucrose,
malate,
ATP,
energy
charge
(EC)
nodules,
revealing
trade-off
between
growth
development.
Moderate
(L30),
however,
balanced
compensation
consumption,
increasing
total
non-structural
carbohydrates
(TNC)
roots
N
ureide
leaves
pods.
Network
analysis
showed
L30
improved
synergies
functional
traits
ultimately
benefiting
overall
plant
nutrient
accumulation
This
study
elucidates
mechanism
highlights
how
optimizes
source-sink
coordination
to
enhance
photosynthesis
nitrogen
fixation.
Communications Biology,
Journal Year:
2024,
Volume and Issue:
7(1)
Published: March 22, 2024
Abstract
Root-associated
microbes
can
alleviate
plant
abiotic
stresses,
thus
potentially
supporting
adaptation
to
a
changing
climate
or
novel
environments
during
range
expansion.
While
change
is
extending
species
fundamental
niches
northward,
the
distribution
and
colonization
of
mutualists
(e.g.,
arbuscular
mycorrhizal
fungi)
pathogens
may
constrain
growth
regeneration.
Yet,
degree
which
biotic
factors
impact
performance
associated
microbial
communities
at
edge
their
remains
unclear.
Here,
we
use
root
microscopy,
coupled
with
amplicon
sequencing,
study
bacterial,
fungal,
root-associated
from
sugar
maple
seedlings
distributed
across
two
temperate-to-boreal
elevational
gradients
in
southern
Québec,
Canada.
Our
findings
demonstrate
that
soil
pH,
Ca,
distance
trees
are
key
drivers
communities,
overshadowing
influence
elevation.
Interestingly,
changes
fungal
community
composition
mediate
an
indirect
effect
pH
on
seedling
growth,
pattern
consistent
both
sites.
Overall,
our
highlight
complex
role
shaping
tree-microbe
interactions,
turn
correlated
growth.
These
have
important
ramifications
for
tree
expansion
response
shifting
climatic
niches.
Plant and Soil,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 8, 2025
Abstract
Background
and
aims
Plant-beneficial
microbes
may
attenuate
climate
change-induced
stresses
on
plants
such
as
drought.
We
investigated
the
potential
of
beneficial
microbial
consortia
(BMc)
plant
growth
rhizosphere
bacterial/archaeal
community
under
Methods
Seeds
Zea
mays
B73
were
inoculated
with
six
plant-beneficial
bacterial
isolates
either
alone
or
combined
in
two
three-member
(BMc1,
BMc2)
before
sowing
loamy
sandy
substrates
greenhouse.
A
known
effective
consortium
(BMc3)
was
included
positive
control.
Drought
treatment
established
BMc
treatments
by
omitting
watering
last
five
weeks
period.
The
maize
single
determined.
Colony-forming
units
(CFUs)
inoculants
evaluated
selective
plating,
effects
native
assessed
using
16S
rRNA
gene
amplicon
sequencing
basal
root
tip
grown
loam.
Results
In
both
water
conditions,
CFUs
inoculations
higher
at
roots
than
tips.
Under
well-watered
seed
inoculation
a
isolate
had
no
effect
substrates.
resulted
shoot
(but
not
root)
compared
to
non-inoculated
controls
conditions
zone
most
important
driver
for
beta-diversity,
followed
while
showed
effect.
Conclusion
Our
study
suggests
that
has
drought
stress
during
growth.
Environmental Microbiology,
Journal Year:
2024,
Volume and Issue:
26(3)
Published: March 1, 2024
Abstract
Plant‐systemic
neonicotinoid
(NN)
insecticides
can
exert
non‐target
impacts
on
organisms
like
beneficial
insects
and
soil
microbes.
NNs
affect
plant
microbiomes,
but
we
know
little
about
their
effects
microbial
communities
that
mediate
plant‐insect
interactions,
including
nectar‐inhabiting
microbes
(NIMs).
Here
employed
two
approaches
to
assess
the
of
NN
exposure
several
NIM
taxa.
First,
assayed
in
vitro
six
compounds
growth
using
plate
assays.
Second,
inoculated
a
standardised
community
into
nectar
NN‐treated
canola
(
Brassica
napus
)
assessed
survival
after
24
h.
With
few
exceptions,
tended
decrease
bacterial
metrics.
However,
magnitude
concentrations
at
which
were
observed
varied
substantially
across
bacteria.
Yeasts
showed
no
consistent
response
NNs.
In
nectar,
saw
treatment
Rather,
abundance
diversity
responded
inherent
qualities
volume.
conclusion,
found
evidence
NIMs
respond
field‐relevant
levels
within
h,
our
study
suggests
context,
specifically
assay
methods,
time
traits,
is
important
assaying
communities.
Nature Communications,
Journal Year:
2024,
Volume and Issue:
15(1)
Published: Aug. 2, 2024
Abstract
Root
exudates
contain
specialised
metabolites
that
shape
the
plant’s
root
microbiome.
How
host-specific
microbes
cope
with
these
bioactive
compounds,
and
how
this
ability
affects
microbiomes,
remains
largely
unknown.
We
investigated
maize
bacteria
metabolise
benzoxazinoids,
main
of
maize.
Diverse
abundant
metabolised
major
compound
in
rhizosphere
MBOA
(6-methoxybenzoxazolin-2(3H)-one)
formed
AMPO
(2-amino-7-methoxy-phenoxazin-3-one).
forming
were
enriched
benzoxazinoid-producing
could
use
as
carbon
source.
identified
a
gene
cluster
associated
formation
microbacteria.
The
first
cluster,
bxdA
encodes
lactonase
converts
to
vitro.
A
deletion
mutant
homologous
genes
genus
Sphingobium
,
did
not
form
nor
was
it
able
BxdA
different
genera
bacteria.
Here
we
show
plant-specialised
select
for
metabolisation-competent
represents
benzoxazinoid
metabolisation
whose
carriers
successfully
colonize
thereby
chemical
environmental
footprint.
Journal of General Plant Pathology,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Oct. 17, 2024
Abstract
Plant
pathogens
cause
plant
diseases
that
significantly
decrease
crop
yields,
posing
a
serious
threat
to
global
food
security.
While
disease
resistance
has
traditionally
been
understood
as
the
trait
determined
by
innate
immune
system
and
pathogen
virulence
system,
recent
research
underscores
pivotal
role
of
microbiome
in
resistance.
Plant-associated
microbiomes
confer
protection
against
through
direct
inhibition,
resource
competition,
activation
responses.
Agricultural
practices
such
rotation,
intercropping,
disease-resistant
breeding,
biocontrol,
organic
farming
modulate
microbiomes,
thereby
influencing
This
review
synthesizes
latest
advancements
understanding
intricate
interactions
among
plants,
pathogens,
microbiomes.
We
emphasize
need
for
in-depth
mechanistic
studies
linking
agricultural
dynamics
propose
future
directions
leverage
sustainable
agriculture.
The ISME Journal,
Journal Year:
2024,
Volume and Issue:
18(1)
Published: Jan. 1, 2024
Antibiotic
resistance
in
plant-associated
microbiomes
poses
significant
risks
for
agricultural
ecosystems
and
human
health.
Although
accumulating
evidence
suggests
a
role
plant
genotypes
shaping
their
microbiome,
almost
nothing
is
known
about
how
the
changes
of
genetic
information
affect
co-evolved
microbiome
carrying
antibiotic
genes
(ARGs).
Here,
we
selected
16
wheat
cultivars
experimentally
explored
impact
host
variation
on
phyllosphere
ARGs,
metabolites.
Our
results
demonstrated
that
significantly
influenced
resistomes.
Wheat
exhibiting
high
ARGs
were
linked
to
elevated
Pseudomonas
populations,
along
with
increased
abundances
aeruginosa
biofilm
formation
genes.
Further
analysis
350
spp.
genomes
from
diverse
habitats
at
global
scale
revealed
nearly
all
strains
possess
multiple
virulence
factor
(VFGs),
mobile
elements
(MGEs)
genomes,
albeit
lower
nucleotide
diversity
compared
other
species.
These
findings
suggested
proliferation
contributed
resistance.
We
further
observed
direct
links
between
upregulated
leaf
metabolite
DIMBOA-Glc,
spp.,
enrichment
which
corroborated
by
microcosm
experiments
demonstrating
DIMBOA-Glc
enhanced
relative
abundance
Overall,
alterations
metabolites
resulting
throughout
evolution
may
drive
development
highly
specialized
microbial
communities
capable
enriching
ARGs.
This
study
enhances
our
understanding
plants
actively
shape
clarifies
