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Fig. 8.8 Biosynthetic routes 10, 11, 0
0
, and 12 which are responsible for the formation of
MVPchlide
a
in LMV-DDV-LDMV plant species. The routes are highlighted in
red
(Adapted
from Fig.
6.4
of Chap.
6
, and from Kolossov and Rebeiz
2010
)
Biosynthesis of MV Pchlide a in DMV-LDV-LDMV Plant Species via Routes 11
As depicted in Fig.
8.8
, MV Pchlide
a
can also be formed by reduction of the vinyl
group of DV Pchlide
a
to ethyl at position 4 of the macrocycle, via route11, a reaction
catalyzed by 4VPideR (Tripathy and Rebeiz
1988
). This in turn is conjectured to lead
to the formation of MV Pchlide
b
in greening DMV-LDV-LDMV plants (Kolossov
and Rebeiz
2003
).
Biosynthesis of MV Pchlide a in DMV-LDV-LDMV Plant Species via Routes 0
0
In this biosynthetic route, MV Pchlide
a
is formed from MV Mpe via VPideR.
The Operation of biosynthetic route 0
0
in DMV-LDV-LDMV plants during
photoperiodic greening is justified by the detection and solubilization of 4-Vinyl
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