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ALA
ALA
ALA
1
8
0
DV Proto
DV Proto
DV Proto
0
4
VMPR
DV Mg-Proto
DV Mg -Proto
MV Mg-Proto
DV Mg -Proto
2
0
1
8
DV Mpe
1
DV Mpe
DV Mpe
2
3
8
DV Pchlide
a
4VPideR
4VPideR
4VMpeR
0
MV Pchlide a
MV Pchlide
a
DV Pchlide
a
9
POR-A
3D
3
9
8
MV Mpe
MV Chlide a
MV Chlide a
MV Mpe
1
3D
3
POR-A
DV Chlide
a
MV Pchlide b
2
0
1
MV Chlide
a
E
MV Chl a
9
MV Pchlide a
MV Pchlide a
4VCR
8
4VCR
MV Chlide a
MV Chlide b
DV Chlide
a
4
POR-A
POR-A
2
0
4
MV Chlide a
MV Chlide a
MV Chlide a
MV Chlide
b
4
5
6
1
2
0
8
9
MV Chl
b
7
MV Chl a
MV Chl a
MV Chl a
DV Chlide b
DV Chl a
MV Chl a
MV Chl a
8
6
1
0
5
2
4VChlR
MV Chl b
DV Chl b
DV Chl b
MV Chl b
MV Chl b
MV Chl b
MV Chl
b
Fig. 8.4 Biosynthetic routes 1, and 8 which are responsible for the formation of DV Pchlide
a
from DV Mpe in LDV-DDV-LDDV plant species. Routes 1, and 8 are highlighted in
blue
(Adapted from Fig.
6.3
of Chap.
6
, and from Kolossov and Rebeiz
2010
)
observation suggest very strongly that during the light cycles of the photoperiod, green
DDV-LDV-LDDV plant species form most of their MV Chl
a
via DV Pchlide
a
,DV
Chlide
a
and MV Chlide
a
as depicted in route 8.
Biosynthetic Heterogeneity of DV Pchlide
a
in DMV-LDV-LDMV Plant
Species Like Barley and Corn
The accumulation of DV Pchlide
a
in LDV-DDV-LDMV plant species such as
Corn and other monocots treated with ALA and ALA +Dpy has been reported
earlier (Rebeiz et al.
1991
).
In Fig.
8.5
, the biosynthesis of DV Pchlide
a
fromDVMpe in DMV-LDV-LDMV
plants is visualized to occur in three different thylakoid environments via routes
10, 11, and 13. This was suggested by multiple resonance energy transfer from Mp
and by further conversions of DV Pchlide
a
to Pchlides and Chls, in DMV-LD-
LDMV Plant species as will be discussed below.
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