Physiologia Plantarum,
Год журнала:
2024,
Номер
176(3)
Опубликована: Май 1, 2024
Abstract
Tomatoes
are
frequently
challenged
by
various
pathogens
,
among
which
Phytophthora
capsici
(
P.
)
is
a
destructive
soil‐borne
pathogen
that
seriously
threatens
the
safe
production
of
tomatoes.
Plant
growth‐promoting
rhizobacteria
(PGPR)
positively
induced
plant
resistance
against
multiple
pathogens.
However,
little
known
about
role
and
regulatory
mechanism
PGPR
in
tomato
to
.
Here,
we
identified
new
strain
Serratia
plymuthica
S.
),
HK9‐3,
has
significant
antibacterial
effect
on
infection.
Meanwhile,
stable
colonization
roots
even
under
infection,
improved
growth
parameters,
root
system
architecture,
photosynthetic
capacity,
boosted
biomass.
Importantly,
HK9‐3
significantly
alleviated
damage
caused
infection
through
enhancing
ROS
scavenger
ability
inducing
antioxidant
defense
pathogenesis‐related
(PR)
proteins
leaves,
as
evidenced
elevating
activities
peroxidase
(POD),
superoxide
dismutase
(SOD),
catalase
(CAT),
ascorbate
(APX),
phenylalanine
ammonia
lyase
(PAL),
polyphenol
oxidase
(PPO),
chitinase,
β‐1,3‐glucanase,
increasing
transcripts
POD
SOD
CAT
APX1
PAL1,
PAL2
PAL5
PPO2
CHI17
β‐1,3‐glucanase
genes.
Notably,
not
only
effectively
soil
microecology
fertility,
but
also
enhanced
fruit
yield
44.6%
quality.
Our
study
presents
promising
effective
solution
for
controlling
cultivation
while
simultaneously
promoting
yield,
may
have
implications
control
vegetable
production.
