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2015 ; 10
(5
): e1019979
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
CHS silencing suggests a negative cross-talk between wax and flavonoid pathways
in tomato fruit cuticle
#MMPMID26039481
Heredia A
; Heredia-Guerrero JA
; Domínguez E
Plant Signal Behav
2015[]; 10
(5
): e1019979
PMID26039481
show ga
Tomato fruits (Solanum lycopersicum L.) accumulate flavonoids in their cuticle
and epidermal cells during ripening. These flavonoids come from de novo
biosynthesis due to a significant increase in chalcone synthase (CHS) activity
during ripening. Virus-induced gene silencing (VIGS) of tomato fruits have been
used to down-regulate SlCHS expression during ripening and analyze the effects at
the epidermal and cuticle level. Besides the expected change in fruit color due
to a lack of flavonoids incorporated to the cuticle, several other modifications
such as a decrease in the amount of cutin and polysaccharides were observed.
These indicate a role for either flavonoids or CHS in the alteration of the
expression levels of some genes involved in cuticle biosynthesis. Moreover, a
negative interaction between the 2 cuticle components, flavonoids and waxes,
suggests a relationship between these 2 metabolic pathways.