Abstract:
:Effects of red and blue light at irradiances from 1.6 to 28.3 micromolar per square meter per second on chloroplast pigments, light-harvesting pigment-proteins associated with photosystem II, and the corresponding mRNA were evaluated in maize (Zea mays L.) plants (OP Golden Bantum) grown for 14 days under 14 hours light/10 hours dark cycles. Accumulation of pigments, pigment-proteins, and mRNA was less in blue than in red light of equal irradiance. The difference between blue and red light, however, varied as a function of irradiance level, and the pattern of this variation suggests irradiance-controlled activation/deactivation (switching) of blue-light receptor. The maximum reduction in blue light of mRNA and proteins associated with light-harvesting complex occurs at lower irradiance levels than the maximum reduction of chlorophylls a and b.
journal_name
Plant Physioljournal_title
Plant physiologyauthors
Eskins K,Westhoff P,Beremand PDdoi
10.1104/pp.91.1.163subject
Has Abstractpub_date
1989-09-01 00:00:00pages
163-9issue
1eissn
0032-0889issn
1532-2548journal_volume
91pub_type
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