Naučno-agronomičeskij žurnal.,
Journal Year:
2024,
Volume and Issue:
4(127), P. 17 - 21
Published: Dec. 23, 2024
Для
борьбы
с
опустыниванием
и
восстановлением
деградированных
территорий
юга
России
используются
ксерофитные
растения,
например,
одним
из
самых
распространенных
является
терескен
серый
(Krascheninnikovia
ceratoides
(L.)
Gueldenst.).
Устойчивость
данного
растения
связана
не
только
его
видовой
спецификой,
но
наличием
эндофитной
микоризы,
в
число
которой
входит
арбускулярная
эндомикориза
(АМ).
Формирование
АМ
у
растений
способствует
повышению
устойчивости
к
неблагоприятным
факторам
внешней
среды,
частности,
засухе.
В
связи
этим
целью
работы
стало
проведение
поиска
возможного
наличия
корневой
системе
K.
ceratoides.
достижения
поставленной
цели
были
использованы
морфологические
методы
исследования,
помощью
которых
проводили
оценку
микоризации
образования
по
методу
Травло.
результате
исследования
выявлены
характерные
элементы,
присущие
как
микоризе,
так
представителям
Интенсивность
заселения
системы
микоризой
составила
37
%.
Количество
выявленных
элементов
было
18
%,
а
микоризованных
фрагментов
корня
около
3
Полученные
данные
свидетельствуют
о
том,
что
скорее
всего
есть
симбиотическая
связь
между
эндофитными
грибами,
включая
ceratoides,
может
способствовать
среды.
Установленный
факт
представлять
интерес
для
дальнейших
исследований,
направленных
на
отбор
групп
эндофитных
грибов,
повышающих
устойчивость
Xerophytic
plants
are
used
to
combat
desertification
and
restore
degraded
territories
in
Southern
Russia,
for
example,
one
of
the
most
common
is
Teresken
gray
The
stability
this
plant
associated
not
only
with
its
species
specificity,
but
also
presence
endophytic
mycorrhiza,
which
includes
arbuscular
endomycorrhiza
fungi
(AMF).
formation
AMF
contributes
increased
resistance
adverse
environmental
factors,
particular
drought.
In
regard,
aim
work
was
search
possible
root
system
To
achieve
goal,
morphological
research
methods
were
used,
help
mycorrhization
evaluated
using
Etching
method.
results
revealed
elements
inherent
both
mycorrhiza
representatives
intensity
colonization
by
number
identified
mycorrhizal
fragments
about
data
obtained
indicate
that
there
likely
a
symbiotic
relationship
between
fungi,
including
may
contribute
factors.
This
fact
be
interest
further
aimed
at
selecting
groups
increase
Research Square (Research Square),
Journal Year:
2024,
Volume and Issue:
unknown
Published: April 9, 2024
Abstract
Background
Plant
mycobiomes
play
a
crucial
role
in
plant
health,
growth,
and
adaptation
to
changing
environments,
making
their
diversity
dynamics
essential
for
agricultural
environmental
contexts,
including
conservation
efforts,
climate
change
mitigation,
potential
biotechnological
applications.
Horizontally
transferred
are
established
organs,
yet
the
of
colonization
establishment
remain
unknown.
New
molecular
technologies
offer
deeper
insight
into
plant-associated
mycobiomes.
In
this
study,
we
investigated
leaf-associated
cloned
replicates
aspen
(Populus
tremula)
with
naturally
varying
phenolic
profiles
history
nitrogen
fertilization.
Main
findings
Using
ITS2
metabarcoding
344
samples
collected
from
ca
ten-year-old
common
garden
small
trees
at
various
time
points
over
two
consecutive
years,
identified
30,080,430
reads
our
database,
corresponding
an
average
87,448
per
sample
clustered
581
amplicon
sequence
variants
(ASVs).
Analysis
ASV
patterns
revealed
changes
both
richness
abundance
among
genotypes
across
seasons,
no
discernible
effect
fertilization
history.
Additionally,
number
was
negatively
correlated
ability
synthesize
store
condensed
tannins.
bioRxiv (Cold Spring Harbor Laboratory),
Journal Year:
2024,
Volume and Issue:
unknown
Published: Feb. 8, 2024
Abstract
Tropical
rainforests
represent
one
of
the
most
diverse
and
productive
ecosystems
on
Earth.
High
productivity
is
sustained
by
efficient
rapid
cycling
nutrients
through
decomposing
organic
matter,
which
for
a
large
part
made
possible
symbiotic
associations
between
plants
mycorrhizal
fungi.
In
this
association,
an
individual
plant
typically
associates
simultaneously
with
multiple
fungi
fungus
plants,
creating
complex
networks
plants.
However,
there
are
still
very
few
studies
that
have
investigated
fungal
composition
diversity
in
tropical
rainforest
trees,
particularly
Africa,
assessed
structure
network
trees.
study,
we
collected
root
rhizosphere
soil
samples
from
Ise
Forest
Reserve
(Southwest
Nigeria),
employed
metabarcoding
approach
to
identify
dominant
arbuscular
(AM)
taxa
associating
ten
co-occurring
tree
species
assess
variation
AM
communities.
Network
analysis
was
used
elucidate
architecture
species.
A
total
194
Operational
Taxonomic
Units
(OTUs)
belonging
six
families
were
identified,
68%
all
OTUs
Glomeraceae.
While
did
not
differ
species,
community
did.
analyses
showed
significantly
nested
relatively
low
level
specialization
(
H
2
=
0.43)
modularity
M
0.44).
We
conclude
that,
although
some
differences
composition,
studied
associate
number
Similarly,
had
host
breadth
connected
each
other,
thereby
potentially
working
as
interaction
hubs.
Graphical
bioRxiv (Cold Spring Harbor Laboratory),
Journal Year:
2024,
Volume and Issue:
unknown
Published: April 28, 2024
Abstract
Phenotypic
plasticity,
the
dynamic
adjustment
of
traits
to
environmental
variations,
is
pivotal
enabling
species
exploit
broader
niches
and
withstand
suboptimal
conditions.
This
adaptability
expected
be
particularly
relevant
for
newly
formed
allopolyploids,
which
have
redundant
gene
copies
must
establish
themselves
in
diverse
environments,
distinct
from
their
parents
other
relatives.
Here
we
investigate
ecologically
divergent
sibling
allopolyploid
marsh
orchids
(
Dactylorhiza
)
through
reciprocal
transplantation
experiments
at
two
localities
understand
drivers
ecological
divergence
persistence
face
interspecific
flow.
Although
consistent
abiotic
differences
characterise
alternative
great
majority
expression
between
allopolyploids
plastic.
Few
genes
exhibit
fixed
differences,
suggesting
that
despite
divergence,
plasticity
may
mediate
flow
thereby
preventing
differentiation.
Extending
our
investigations
rhizosphere,
uncover
a
much
more
root
mycobiome
either
when
growing
environment
with
nutrient-poor
soils.
Our
finding
suggests
both
biotic
factors
contribute
distribution
delimitation
allopolyploids.
Altogether,
results
indicate
can
simultaneously
promote
diversification
homogenization
lineages,
influencing
establishment
recurrently
species.
Plain
language
summary
A
duplicated
genome
enhance
polyploids,
widening
tolerance,
but
long
term
effects
this
remain
unclear.
Studying
orchids,
show
high
only
very
few
transcriptomic
differences.
Instead,
observe
mycobiomes
associated
each
orchid’s
environment,
revealing
complex
interplay
polyploid
speciation.