In article <3010ge$9cp at nof.abdn.ac.uk>, bot133 at nof.abdn.ac.uk (j.kerslake)
wrote:
> HI...
>> Could anyone please help with the following question:
>> Is biosynthesis of chlorophylls and carotenoids light - dependent in
> bryophytes (particularly mosses) in the same way as it is in angiosperms?
>> If so, which wavelengths are required?
>> Any references?
>> (this is for a friend who is studying mosses under snowbeds)
>> Thanks for any help.....
>> Jim (for Clare).
>>bot133 at abdn.ac.uk
>Chlorophyll synthesis in mosses is not dependent on light. This subject
>has not been studied in mosses for a very long time. It has been known
>for well over a century that gymnosperms can form chlorophyll in the
>.absence of light.
.
.
.
>For a
>fairly recent paper on these chl genes, see Li, J., Goldschmidt-Clermont,
>M., and Timko, M. P. (1993) Chloroplast-encoded chlB is required for
>light-independent protochlorophyllide reductase activity in Chlamydomonas
>reinhardtii. The Plant Cell 5, 1817-1829.
> I hope this helps.
Certainly does ... Thanks a lot!
Jim / Clare
