bioRxiv (Cold Spring Harbor Laboratory),
Journal Year:
2024,
Volume and Issue:
unknown
Published: Oct. 3, 2024
Abstract
Biosynthetic
gene
clusters
(BGCs)
are
sets
of
often
heterologous
genes
that
genetically
and
functionally
linked.
Among
eukaryotes,
BGCs
most
common
in
plants
fungi,
where
they
ensure
the
co-expression
different
enzymes
coordinating
biosynthesis
specialised
metabolites.
Here,
we
report
on
a
newly
identified
withanolide
BGC
Physalis
grisea
(ground-cherry),
member
nightshade
family
(
Solanaceae
).
A
combination
transcriptomic,
epigenomic
metabolic
analyses,
revealed
that,
following
duplication
event,
this
evolved
two
tissue-specifically
expressed
sub-clusters,
containing
eight
pairs
paralogs
contribute
to
related
but
distinct
biochemical
processes;
sub-
functionalisation
is
tightly
associated
with
epigenetic
features
local
chromatin
environment.
The
sub-clusters
appear
strictly
isolated
from
each
other
at
structural
level,
forming
highly
self-interacting
domain
tissue-dependent
levels
condensation.
This
correlates
expression
exclusively
either
above-
or
below-ground
tissue,
thus
spatially
separating
production
compounds.
By
comparative
phylogenomic
analysis,
show
likely
before
diversification
underwent
lineage-
specific
diversifications
losses.
tissue-specific
sub-functionalisation
species
Physalideae
tribe
other,
independent
events
outside
clade.
In
sum,
our
study
reports
first
instance
an
epigenetically
modulated
within
sheds
light
withanolides,
diverse
group
steroidal
triterpenoids
important
plant
defence
amenable
pharmaceutical
applications
due
their
anti-inflammatory,
antibiotic
anti-
cancer
properties.
Proceedings of the National Academy of Sciences,
Journal Year:
2025,
Volume and Issue:
122(12)
Published: March 19, 2025
Plants
produce
diverse
specialized
metabolites
with
important
ecological
functions.
It
has
recently
become
apparent
that
the
genes
for
many
of
these
pathways
are
not
dispersed
in
plant
genomes,
but
rather
arranged
like
beads
on
a
string
biosynthetic
gene
clusters
(BGCs).
Pathways
encoded
by
BGCs
as
rule
dedicated
linear
do
form
parts
wider
metabolic
networks.
In
contrast,
biosynthesis
widely
distributed
more
ancestral
such
carotenoids
and
anthocyanins
clustered.
Little
is
known
about
how
evolved
clustered
interact
general
metabolism.
We
characterized
12-gene
BGC
antimicrobial
defense
compound
avenacin
A-1,
triterpene
glycoside
produced
oats.
Avenacin
A-1
acylated
fluorophore
N
-methyl
anthranilate
confers
bright
blue
fluorescence
oat
root
tips
under
ultraviolet
light.
Here,
we
exploit
suite
>100
avenacin-deficient
mutants
identified
screening
reduced
to
identify
required
function
this
paradigm
BGC.
Using
combination
mutant
chemotyping,
biochemical
molecular
analysis,
genome
resequencing,
two
nonclustered
(
Sad4
Pal2
)
encoding
enzymes
synthesize
donors
glycosylation
acylation
(recruited
from
phenylpropanoid
tryptophan
pathways).
Our
finding
Cluster
Auxiliary
Enzymes
(CAEs)
provides
insights
into
interplay
between
metabolism
newly
lineage-specific
Plant Stress,
Journal Year:
2023,
Volume and Issue:
10, P. 100241 - 100241
Published: Sept. 27, 2023
In
this
research,
we
investigated
the
impact
of
drought
stress
on
secondary
metabolite
production
in
cumin
plants
and
associated
transcriptional
changes
biosynthetic
genes.
Drought
induced
a
significant
increase
levels
beta-carotene,
lycopene,
terpenes,
anthocyanin,
phenolic
compounds,
flavonoids,
alkaloids,
indicating
an
adaptive
metabolic
shift
response
to
adverse
conditions.
Concurrently,
there
was
upregulation
expression
key
genes,
including
Phenylalanine
ammonia-lyase
(PAL),
3-deoxy-7-phosphoheptulonate
synthase
(DAHP
synthase),
Deoxy
xylose
phosphate
reductase
(DXS),
3-hydroxy-3-methylglutaryl-CoA
(HMGR),
Geranyl
diphosphate
(GPPS),
which
corroborated
findings.
Notably,
while
most
metabolites
exhibited
increasing
trend
under
stress,
flavonoids
displayed
disproportionate
elevation,
even
as
overall
decrease
compounds
other
metabolites.
This
observation
suggests
potential
activation
alternative
flavonoid
synthesis
pathways
or
conversion
during
stress.
Strong
correlations
were
identified
between
genes
their
respective
concentrations,
underscoring
central
role
regulation
Collectively,
our
results
provide
comprehensive
understanding
adaptations
when
exposed
Such
insights
can
be
pivotal
designing
drought-resilient
crops,
with
implications
for
food
security
amidst
escalating
climatic
challenges.
Journal of Experimental Botany,
Journal Year:
2024,
Volume and Issue:
unknown
Published: April 23, 2024
Amaryllidaceae
alkaloid
(AAs)
biosynthesis
has
garnered
significant
attention
in
recent
years,
particularly
with
the
commercialisation
of
galanthamine
as
a
treatment
for
symptoms
Alzheimer's
disease.
A
amount
research
work
over
last
8
decades
focused
on
understanding
AA
biosynthesis,
starting
from
early
radiolabelling
studies
to
multi-omics
analysis
modern
biotechnological
advancements.
Those
enabled
identification
hundreds
metabolites,
characterisation
biochemical
pathway,
an
environmental
stimuli,
and
molecular
regulation
these
pharmaceutically
agriculturally
important
metabolites.
Despite
numerous
works
there
remain
gaps
their
plants.
As
such,
further
is
needed
fully
elucidate
metabolic
pathway
facilitate
production.
This
review
aims
provide
comprehensive
overall
summary
current
state
knowledge
AAs
elicitation
transcription
factors
expression
cell
nucleus
transport
apoplast,
highlight
challenges
that
need
be
overcome
advancement.
Current Opinion in Plant Biology,
Journal Year:
2024,
Volume and Issue:
80, P. 102547 - 102547
Published: May 14, 2024
Plants
interact
with
each
other
via
a
multitude
of
processes
among
which
belowground
communication
facilitated
by
specialized
metabolites
plays
an
important
but
overlooked
role.
Until
now,
the
exact
targets,
modes
action,
and
resulting
phenotypes
that
these
induce
in
neighboring
plants
have
remained
largely
unknown.
Moreover,
positive
interactions
driven
release
root
exudates
are
prevalent
both
natural
field
conditions
controlled
laboratory
environments.
In
particular,
intraspecific
suggest
genotypic
recognition
mechanism
addition
to
non-self
perception
plant
roots.
This
review
concentrates
on
recent
discoveries
regarding
how
one
another
through
signals
intra-
interspecific
mixtures.
Furthermore,
we
elaborate
enhanced
understanding
can
propel
agroecology
forward.
Horticulture Research,
Journal Year:
2025,
Volume and Issue:
12(5)
Published: Feb. 1, 2025
Abstract
Monoterpenoids
are
small
volatile
molecules
produced
by
many
plants
that
have
applications
in
consumer
products
and
healthcare.
Plants
from
the
mint
family
(Lamiaceae)
prodigious
producers
of
monoterpenoids,
including
a
chemotype
Agastache
rugosa
(Huo
Xiang),
which
produces
pulegone
isomenthone.
We
sequenced,
assembled
annotated
haplotype-resolved
chromosome-scale
genome
assembly
A.
with
monoterpene
chemotype.
This
revealed
biosynthesis
genes
biosynthetic
gene
cluster,
shares
common
origin
cluster
Schizonepeta
tenuifolia.
Using
phylogenetics
synteny
analysis,
we
describe
how
clusters
these
two
species
diverged
through
inversions
duplications.
Hi-C
identified
tentative
evidence
contact
between
an
array
reductases,
both
regions
also
enriched
retrotransposons.
its
analysis
add
valuable
novel
insights
to
organization
evolution
terpenoid
Lamiaceae.
Proceedings of the National Academy of Sciences,
Journal Year:
2025,
Volume and Issue:
122(8)
Published: Feb. 20, 2025
Biosynthetic
gene
clusters
(BGCs)
are
sets
of
often
heterologous
genes
that
genetically
and
functionally
linked.
Among
eukaryotes,
BGCs
most
common
in
plants
fungi
ensure
the
coexpression
different
enzymes
coordinating
biosynthesis
specialized
metabolites.
Here,
we
report
identification
a
withanolide
BGC
Physalis
grisea
(ground-cherry),
member
nightshade
family
(Solanaceae).
A
combination
transcriptomic,
epigenomic,
metabolic
analyses
revealed
that,
following
duplication
event,
this
evolved
two
tissue-specifically
expressed
subclusters,
containing
several
pairs
paralogs
contribute
to
related
but
distinct
biochemical
processes;
subfunctionalization
is
tightly
associated
with
epigenetic
features
local
chromatin
environment.
The
subclusters
appear
strictly
isolated
from
each
other
at
structural
level,
forming
highly
self-interacting
domain
tissue-dependent
levels
condensation.
This
correlates
expression
either
above-
or
below-ground
tissue,
thus
spatially
separating
production
compounds.
By
comparative
phylogenomics,
show
likely
before
diversification
Solanaceae
underwent
lineage-specific
diversifications
losses.
tissue-specific
species
Physalideae
tribe
other,
independent
events
outside
clade.
In
sum,
our
study
reports
on
an
instance
epigenetically
modulated
within
sheds
light
withanolides,
diverse
group
steroidal
triterpenoids
important
plant
defense
amenable
pharmaceutical
applications
due
their
anti-inflammatory,
antibiotic,
anticancer
properties.