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Fig. 12.2 DV Pchlide
b
Fig. 12.3 MV Chlide
b
Fig. 12.4 DV Chlide
b
DV Chlide
b
may also be present in the prochlorophyte picoplankton of the
subtropical waters of the North Atlantic as well as in the picoplankton of the
euphotic zone of the world tropical and temperate oceans, and the Mediterranean
sea, where DV Chl
a
and
b
are the predominant Chl species (Chisholm et al.
1990
,
1992
; Goerike and Repeta
1992
; Veldhuis and Kraay
1990
).
DV Chlide
b
exhibits the same electronic spectroscopic properties as DV Chl
b
(see below) but differs from the latter by its solubility in more polar organic
solvents and its chromatographic mobility.
12.6 DV Chl
b
The possible occurrence of DV Chl
b
in green plants was predicted after the discovery
of DV Chl
a
(Rebeiz et al.
1980
). It was next detected in the Nec 2 maize mutant
(ex-ON 8147) by electronic spectroscopy (Bazzaz
1981
). Its chemical structure was
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