Root-associated fungal diversity in Central Africa’s most logged timber species (Aucoumea klaineana Pierre) suggests monodominance is independent of mycorrhizal associations
Quentin Guidosse,
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Mélanie Roy,
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Sébastien Massart
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et al.
Research Square (Research Square),
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 11, 2025
Abstract
Aucoumea
klaineana
is
the
most
important
timber
species
in
Central
Africa,
forming
monodominant
stands.
While
soil
fungi
are
crucial
for
plant
growth,
their
role
promoting
monodominance
and
supporting
suppressed,
light-demanding
trees
remains
underexplored.
This
study,
first
to
analyze
root
mycobiota
of
A.
klaineana,
investigates
fungal
communities
stands
old-growth
mixed
forests
Gabon,
plantations
DRC
using
ITS2
rDNA
SSU
rRNA
high-throughput
sequencing.
We
identified
high
diversity
both
regions
but
found
no
"core
mycobiota"
across
stand
types
or
tree
social
status.
Fungal
varied
significantly
between
types,
emphasizing
a
context-dependent
nature.
Monodominance
was
not
linked
ectomycorrhizal
(EcM),
as
EcM
OTUs
were
arbuscular
mycorrhizal
(AM)
exhibited
richness,
abundance
low,
possibly
due
scarcity
arbuscules.
No
distinct
suppressed
trees.
These
findings
challenge
assumed
link
associations
suggesting
alternative
mechanisms,
such
grafting,
may
influence
dynamics.
study
provides
foundation
future
research
on
belowground
strategies
that
contribute
persistence
sustainable
management
klaineana.
Language: Английский
Dynamics of Arbuscular Mycorrhizal Fungi in the Rhizosphere of Medicinal Plants and Their Promotion on the Performance of Astragalus mongholicus
Wanyi Zhang,
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Chao He,
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Yuli Lin
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et al.
Agronomy,
Journal Year:
2024,
Volume and Issue:
14(11), P. 2695 - 2695
Published: Nov. 15, 2024
Arbuscular
mycorrhizal
fungi
(AMF)
act
as
intermediaries
between
the
root
systems
of
host
plants
and
surrounding
soil,
offering
various
benefits
to
medicinal
plants,
such
promoting
growth
enhancing
quality.
However,
range
AMF
in
characteristics
plant–AMF
networks
farmland
ecosystems
remain
insufficiently
studied.
In
present
study,
we
measured
colonization,
species
diversity,
soil
properties
31
at
Anguo
Medicine
Planting
Base
Northwest
China.
The
network
was
subsequently
analyzed,
growth-promoting
effects
on
Astragalus
mongholicus
were
examined.
Spore
density,
richness,
total
colonization
exhibited
significant
variation
across
different
plant
species.
Glomus
melanosporum,
G.
claroideum,
Septoglomus
constrictum
dominant
among
61
Soil
organic
matter,
phosphatase,
available
nitrogen,
glomalin-related
proteins
(GRSPs)
main
factors
affecting
composition.
Structural
equation
models
a
partitioning
analysis
suggested
highly
species-specific
pattern
distribution
patterns,
where
identities
explained
61.4%
changes
spore
density
48.2%
colonization.
nutrient
availability
phosphatase
activity
also
influenced
Our
results
confirmed
glomalin
an
important
contributor
carbon
for
cultivating
plants.
symbiotic
nested
low
specialized
structure,
high
connectance,
modularity,
which
saturated
symbiosis
stability
provided
by
redundant
associations.
Despite
wide
inoculation
revealed
performance
active
ingredient
content
levels
A.
mongholicus,
claroideum
Sep.
induced
highest
biomass
accumulation
mongholicus.
These
findings
advance
our
understanding
community
dynamics
rhizosphere
offer
valuable
insights
optimizing
cultivation
practices.
Language: Английский