The Chl b Biosynthetic Pathway:Intermediary Metabolism - Chlorophyll Biosynthesis and Technological Applications - page 287

Fig. 13.3 MV Chlide b biosynthesis via route 4 in DDV-LDV-LDDV plant species (Adapted
from Fig. 6.3 of Chap. 6 )
MV Pchlide a and MV Pchlide b . The first traces of MV Pchlide b in greening
etiolated cucumber cotyledons are detected after 14 h of greening (Ioannides 1993 ).
In photoperiodically grown green seedlings, higher amounts of MV Pchlide b are
detected (Ioannides et al. 1997 ; Kolossov and Rebeiz 2003 ). To ascertain the
operation of biosynthetic route 9, in DDV-LDV-LDMV plants, precursor product
relationships between MV Pchlide a and MV Pchlide b and between MV Pchlide
b and MV Chlide b need to be established (Fig. 13.5 ).
Possible Formation of MV Chlide b from MV Pchlide b in Green
DMV-LDV-LDMV Plants via Biosynthetic Route 11
The operation of this hypothetical route is suggested by (a) the formation of MV
Pchlide b in green photoperiodically-grown barley (Kolossov and Rebeiz 2003 ),
and wheat seedlings (Rebeiz, unpublished), (b) the structural relationship between
MV Pchlide a andMV Pchlide b , and (c) the reported photoconversion of MV Pchlide