Genome-wide identification and analysis of the TBL genes reveals NtTBL31 increases drought resistance of tobacco (Nicotiana tabacum)
Chemical and Biological Technologies in Agriculture,
Год журнала:
2025,
Номер
12(1)
Опубликована: Март 22, 2025
Язык: Английский
Biocontrol efficacy of Bacillus velezensis YZU 173039 against Corynespora leaf spot on tobacco
Biocontrol Science and Technology,
Год журнала:
2025,
Номер
unknown, С. 1 - 14
Опубликована: Март 24, 2025
Nicotiana
tabacum
possesses
significant
economic
value
and
has
been
used
medically
recreationally
due
to
its
mildly
irritating
properties.
In
recent
years,
Corynespora
cassiicola
emerged
as
a
major
cause
of
yield
losses
in
Chinese
tobacco
crops,
yet
effective
control
measures
remain
undeveloped.
This
present
study
characterised
the
morphological
characteristics
C.
isolated
from
tobacco.
For
biocontrol
purposes,
strain
(YZU
173039)
exhibiting
strong
inhibitory
effects
on
mycelium
growth
was
identified,
demonstrating
an
inhibition
rate
66.0%
vitro.
identified
Bacillus
velezensis
based
features
sequence
analyses
16S
rRNA
gyrB
gene.
Not
only
did
fermentation
broth
inhibit
mycelial
cassiicola,
but
volatile
organic
compounds
(VOCs)
also
reduced
melanin
content
downregulated
expression
genes
associated
with
synthesis.
Three
scytalone
dehydratase
(SCD)
family
were
predicted
be
potentially
involved
synthesis
pathogenicity.
Furthermore,
found
activate
defence
mechanisms
tobacco,
evidenced
by
changes
plant
defence-related
enzymes
(Phenylalanine
Ammonia-lyase
(PAL),
peroxidase
(POD),
polyphenol
oxidase
(PPO))
levels
three
(NtAOS,
NtMYC2a,
NtJAZ1).
Results
greenhouse
experiments
indicated
that
could
significantly
reduce
disease
severity
caused
cassiicola.
As
promising
agent,
B.
YZU
173039
potential
occurrence
spread
leaf
spot
crops.
Язык: Английский
Isolation, Identification, and Biocontrol Mechanisms of Endophytic Burkholderia arboris DHR18 from Rubber Tree against Red Root Rot Disease
Microorganisms,
Год журнала:
2024,
Номер
12(9), С. 1793 - 1793
Опубликована: Авг. 29, 2024
Red
root
rot
disease
is
a
devastating
fungal
of
rubber
trees
caused
by
Ganoderma
pseudoferreum
(Wakef).
Biocontrols
using
beneficial
microorganisms
are
safe
and
sustainable.
We
isolated
DHR18
endophytic
bacterium
from
healthy
tree
to
obtain
new
efficient
antagonistic
for
red
affecting
evaluated
the
mechanism
action
involved
double
culture
assay,
genome
annotation
analysis,
ethyl
acetate
extraction
method.
The
results
revealed
that
strain
inhibits
G.
growth
has
broad-spectrum
antifungal
activity
secreting
cell
wall
hydrolases
(proteases
chitinases),
indole-3-acetic
acid,
siderophores.
Furthermore,
it
fixes
nitrogen
in
biofilm
formation
phosphate
solubilisation,
improving
resistance
growth.
showed
substances
secreted
mainly
lipopeptides.
Simultaneously,
enhanced
increasing
activities
defence
enzymes
superoxide
dismutase,
phenylalanine
ammonia
lyase,
peroxidase,
catalase,
polyphenol
oxidase.
indicate
B.
arboris
biocontrol
potential
could
be
used
as
candidate
control
trees.
Язык: Английский
Synergistic co-evolution of rhizosphere bacteria in response to acidification amelioration strategies: impacts on the alleviation of tobacco wilt and underlying mechanisms
Zhang Bian-Hong,
Tang Lina,
Li Ri-Kun
и другие.
Frontiers in Microbiology,
Год журнала:
2024,
Номер
15
Опубликована: Окт. 1, 2024
Soil
acidification
represents
a
severe
threat
to
tobacco
cultivation
regions
in
South
China,
exacerbating
bacterial
wilt
caused
by
Ralstonia
solanacearum
.
The
comprehension
of
the
underlying
mechanisms
that
facilitate
restoration
rhizosphere
microbial
communities
“healthy
soils”
is
imperative
for
ecologically
managing
wilt.
This
study
focuses
on
acidified
soils
have
been
subjected
continuous
20
years.
experimental
treatments
included
lime
(L),
biochar
(B),
and
combination
(L+B),
addition
control
group
(CK).
Utilizing
biology
niche
theory,
we
assessed
disease
suppression
effects,
changes
soil
properties,
co-evolution
community.
Each
treatment
significantly
reduced
16.67%
20.14%
compared
(CK)
(
p
<
0.05)
increased
yield
7.86%
27.46%
0.05).
(B)
proved
be
most
effective,
followed
lime-biochar
(L+B).
key
factors
controlling
were
identified
through
random
forest
regression
analysis
as
an
increase
pH
exchangeable
bases,
along
with
decrease
acidity.
However,
alone
led
bulk
density
available
nutrients,
whereas
both
improved
these
parameters
No
significant
correlation
was
found
between
abundance
incidence.
Nonetheless,
all
expanded
ecological
breadth
average
variation
degree
(AVD),
enhanced
positive
interactions
cohesion
within
community,
intensified
negative
involving
suggests
optimizing
community
niches
enhancing
pathogen
antagonism
are
mitigating
soils.
It
recommends
using
mixtures
amendments
due
their
potential
economic
benefits.
offers
valuable
insights
strategies
presents
novel
perspective
research
Solanaceous
crops.
Язык: Английский
Cladophialophora guangxiense sp. nov., a New Species of Dark Septate Endophyte, Mitigates Tomato Bacterial Wilt and Growth Promotion Activities
Agronomy,
Год журнала:
2024,
Номер
14(12), С. 2771 - 2771
Опубликована: Ноя. 22, 2024
Bacterial
wilt
of
tomatoes,
caused
by
Ralstonia
solanacearum,
is
a
significant
soilborne
disease
that
often
causes
reductions
in
the
yield
tomatoes.
Dark
septate
endophytic
fungi
(DSE)
represent
potential
biocontrol
agents
against
plant
pathogens
can
also
enhance
growth.
To
collect
DSE
with
for
biocontrol,
fungus
Cladophialophora
guangxiense
HX2
was
isolated
from
rhizosphere
soil
sugarcane
Hengzhou
Guangxi
Province,
China,
and
novel
species
identified
based
on
morphological
properties
DNA
sequence
analysis.
C.
demonstrated
controlling
effect
76.7%
tomato
bacterial
promoted
0.5-fold
increase
seedling
height.
It
colonized
roots,
enhancing
activity
antioxidant
defensive
enzyme
systems.
Transcriptomic
qPCR
approaches
were
used
to
study
induction
response
strain
infection
comparing
gene
expression
profiles.
Gene
ontology
(GO)
Kyoto
Encyclopedia
Genome
(KEGG)
pathway
enrichment
revealed
tomatoes
produce
salicylic
acid
metabolism,
ethylene-activated
signaling,
photosynthesis,
phenylpropanoid
biosynthesis
infection.
The
IAA4
(3.5-fold
change),
ERF1
Hqt
(1.5-fold
change)
substantially
enhanced
Hsc
70
(0.5-fold
significantly
reduced
treatment
group.
This
provides
theoretical
foundation
further
investigation
into
as
biological
agent
prevention
control
wilt.
Язык: Английский
Biocontrol Potential of Endophytic Bacillus velezensis LSR7 Against Rubber Red Root Rot Disease
Journal of Fungi,
Год журнала:
2024,
Номер
10(12), С. 849 - 849
Опубликована: Дек. 9, 2024
To
obtain
an
effective
bacterial
biocontrol
strain
against
the
fungal
pathogen
Язык: Английский