It is hypothesized that the lycopene is transported from
juice sac to albedo and segment membrane, which would
accommodate three of our observations. The first is the lack
of congruence between carotenogenic gene expression and
carotenoid accumulation in albedo and segment membrane
of WT. The second is the higher sucrose content in the
juice sac of ‘Hong Anliu’ compared with WT as sufficient
sucrose can promote lycopene accumulation (Telef et al.,
2006). The third is that the basal part of the juice sac of
‘Hong Anliu’ where it connects to the segment membrane
is red, but the remainder of the juice sac is yellow
(Fig. 2C). Taken together, these observations suggest that
the large amount of lycopene that accumulated in albedo
and segment membrane is synthesized in juice sacs and
then transported to albedo and segment membrane, leading
to the feedback regulation of carotenogenic genes there.
However, conclusive proof of this hypothesis requires
further characterization of the mutation.
It is hypothesized that the lycopene is transported from
juice sac to albedo and segment membrane, which would
accommodate three of our observations. The first is the lack
of congruence between carotenogenic gene expression and
carotenoid accumulation in albedo and segment membrane
of WT. The second is the higher sucrose content in the
juice sac of ‘Hong Anliu’ compared with WT as sufficient
sucrose can promote lycopene accumulation (Telef et al.,
2006). The third is that the basal part of the juice sac of
‘Hong Anliu’ where it connects to the segment membrane
is red, but the remainder of the juice sac is yellow
(Fig. 2C). Taken together, these observations suggest that
the large amount of lycopene that accumulated in albedo
and segment membrane is synthesized in juice sacs and
then transported to albedo and segment membrane, leading
to the feedback regulation of carotenogenic genes there.
However, conclusive proof of this hypothesis requires
further characterization of the mutation.
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