Horticulture Research,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 12, 2024
Proanthocyanidins
(PAs),
anthocyanins,
and
flavonols
are
key
flavonoids
that
play
diverse
roles
in
plant
physiology
human
health.
Despite
originating
from
a
shared
biosynthetic
pathway,
the
regulatory
mechanisms
of
PA
biosynthesis
cooperative
regulation
different
kinds
remain
elusive,
particularly
flower
tissues
or
organs.
Here,
we
elucidated
network
governing
Freesia
hybrida
'Red
River®'
by
characterizing
four
TT2-type
MYB
transcription
factors,
designated
FhMYBPAs.
Phylogenetic
analysis,
subcellular
localization,
transactivation
assays
predicted
their
as
PA-related
activators.
Pearson
correlation
analysis
revealed
significant
correlations
between
FhMYBPAs
accumulation
various
floral
development
stages.
Functional
studies
demonstrated
activated
directly
binding
to
promoters
target
genes,
which
can
be
enhanced
FhTT8L.
Additionally,
hierarchical
feedback
model
involving
FhTTG1,
FhMYB27,
FhMYBx
was
proposed
for
biosynthesis.
Furthermore,
comparative
flavonoid-related
factors
FhPAP1,
FhMYB5,
FhMYBF1,
FhMYB21L2
highlighted
regulating
PA,
anthocyanin,
flavonol
biosynthesis,
with
some
exhibiting
versatile
regulations.
Overall,
our
findings
provide
insights
into
spatio-temporal
flowers
expand
understanding
MYB-mediated
transcriptional
specialized
metabolites
plants.
International Journal of Molecular Sciences,
Journal Year:
2025,
Volume and Issue:
26(4), P. 1684 - 1684
Published: Feb. 16, 2025
Wintersweet
(Chimonanthus
praecox)
is
known
for
its
flowering
in
winter
and
rich
floral
aroma;
the
whole
flower
yellow
inner
petals
are
red.
In
this
study,
we
chose
wintersweet
genotypes
HLT040
HLT015
as
research
materials,
studied
co-regulatory
mechanism
of
color
fragrance
through
metabolomics
transcriptomics.
This
study
found
that
there
were
more
flavonoids
HLT015,
anthocyanins
(cyanidin-3-O-rutinoside
cyanidin-3-O-glucoside)
only
present
but
contained
monoterpenes
FVBPs
(phenylpropanoid
volatile
compounds)
than
HLT015.
We
constructed
putative
benzenoids
phenylpropanoid
metabolism
pathway
well
terpene
pathways.
some
linkages
between
different
structural
genes
metabolites
wintersweet,
screened
out
39
TFs
may
be
related
to
one
or
yeast
one-hybrid
assay,
CpERF7
was
able
interact
with
promoter
CpANS1,
while
CpbHLH50
CpMYB21
interacted
CpTPS4.
provides
a
theoretical
basis
understanding
wintersweet.
Plant Biotechnology Journal,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 17, 2025
Summary
Flower
scent
is
a
crucial
determiner
in
pollinator
attraction
and
significant
horticultural
trait
ornamental
plants.
Orchids,
which
have
long
been
of
interest
evolutionary
biology
horticulture,
exhibit
remarkable
diversity
floral
type
intensity.
However,
the
mechanisms
underlying
biosynthesis
regulation
orchids
remain
largely
unexplored.
In
this
study,
we
focus
on
Cymbidium
tracyanum
,
wild
species
known
for
its
strong
fragrance
as
primary
breeding
parent
commercial
hybrids.
We
present
chromosome‐level
genome
assembly
C.
totaling
3.79
Gb
size.
Comparative
genomic
analyses
reveal
expansion
gene
families
associated
with
terpenoid
related
metabolic
pathways
.
Integrative
analysis
genomic,
volatolomic
transcriptomic
data
identified
terpenoids
predominant
volatile
components
flowers
characterized
spatiotemporal
patterns
these
volatiles
CtTPS
genes
responsible
biosynthesis,
validating
their
catalytic
functions
vitro
Dual‐luciferase
reporter
assays,
yeast
one‐hybrid
assays
EMSA
experiments
confirmed
that
CtTPS2
CtTPS3,
CtTPS8
could
be
activated
by
various
transcription
factors
(i.e.,
CtAP2/ERF1,
CtbZIP1,
CtMYB2,
CtMYB3
CtAP2/ERF4),
thereby
regulating
production
corresponding
monoterpenes
sesquiterpenes.
Our
study
elucidates
biosynthetic
regulatory
great
significance
fragrant
varieties
understanding
ecological
adaptability
orchids.
This
also
highlights
importance
integrating
multi‐omics
deciphering
key
traits
Stress Biology,
Journal Year:
2025,
Volume and Issue:
5(1)
Published: April 29, 2025
Abstract
Aphids
are
highly
destructive
agricultural
pests
characterized
by
complex
life
cycles
and
phenotypic
variability,
facilitating
their
adaptation
to
diverse
climates
host
plants.
Their
feeding
behavior
leads
plant
deformation,
wilting,
stunted
growth,
disease
transmission,
significant
yield
losses.
Given
the
economic
risks
aphids
pose,
regular
updates
on
seasonal
behaviors,
adaptive
mechanisms,
activities
critical
for
improving
management
strategies
mitigate
crop
This
review
comprehensively
synthesizes
recent
studies
as
pests,
extrinsic
factors
influencing
cycles,
intricate
interactions
between
hosts.
It
also
highlights
advancements
in
biological
control
measures,
including
natural
enemies,
antibiosis,
antixenosis.
Additionally,
we
explore
defense
mechanisms
against
aphids,
focusing
roles
of
cell
wall
components
such
lignin,
pectin
callose
deposition
genetic
regulations
underlying
these
defenses.
Aphids,
however,
can
evolve
specialized
overcome
general
defenses,
prompting
development
targeted
plants,
use
resistance
(R)
genes
specific
aphid
species.
pattern
recognition
receptors
(PRRs)
recognize
compounds
saliva,
which
triggers
enhanced
phloem
sealing
more
focused
immune
responses.
work
enhances
understanding
aphid–plant
interaction
identifies
key
research
gaps
future
studies.
Horticulturae,
Journal Year:
2024,
Volume and Issue:
10(6), P. 617 - 617
Published: June 10, 2024
Floral
scent
is
an
essential
and
genetically
complex
trait
in
herbaceous
peonies
(Paeonia
lactiflora
Pall.);
however,
specific
genes
related
to
metabolic
regulatory
networks
remain
scantily
studied.
Our
study
integrated
metabolite
profiling
RNA-sequencing
screen
floral
biosynthetic
genes.
Hence,
the
major
molecules
identified
by
headspace
collection
combined
with
cultivar-specific
GC-MS
analysis
were
geraniol,
β-caryophyllene,
2-phenylethanol
(2-PE),
citronellol,
1,8-cineole.
Genes
terpenoids
2-PE
biosynthesis
after
assembly
annotation
of
P.
transcriptomes.
Eight
angiosperm-specific
terpene
synthases
(TPSs)
from
TPS-a
TPS-b
clades,
as
well
enzymes
linked
synthesis
such
aromatic
amino
acid
decarboxylase
(AADC),
phenylacetaldehyde
reductase
(PAR),
geranial
(GER)
identified.
The
biochemical
encoded
PlPAR1
PlGER1
generated
(PAld).
pairwise
alignment
AADC1
reveals
a
splice
variant
lacking
124
bp
fragment,
thus
highlighting
possible
role
alternative
splicing
modulating
composition.
This
offers
insights
into
molecular-level
Peonia
taxa,
provides
basis
for
functional
characterization,
breeding,
bioengineering
prospective
candidate
production
volatiles
Paeonia
genus.
International Journal of Molecular Sciences,
Journal Year:
2024,
Volume and Issue:
25(15), P. 8267 - 8267
Published: July 29, 2024
Methylation
represents
a
crucial
class
of
modification
that
orchestrates
spectrum
regulatory
roles
in
plants,
impacting
ornamental
characteristics,
growth,
development,
and
responses
to
abiotic
stress.
The
establishment
maintenance
methylation
involve
the
coordinated
actions
multiple
factors.
Methyltransferases
play
pivotal
role
by
specifically
recognizing
methylating
targeted
sites,
which
induces
alterations
chromatin
structure
gene
expression,
subsequently
influencing
release
volatile
aromatic
substances
accumulation
pigments
plant
petals.
In
this
paper,
we
review
mechanisms
reactions
their
effects
on
changes
We
also
explore
potential
modifications
unravel
underlying
aroma
color
This
aims
further
elucidate
synthesis,
metabolism,
various
related
petals,
thereby
providing
theoretical
reference
for
improving
