Light‐induced circadian rhythms in NADP + ‐glyceraldehyde‐3‐phosphate dehydrogenase mRNA in corn seedlings
1993; Taylor & Francis; Volume: 24; Issue: 1 Linguagem: Inglês
10.1080/09291019309360196
ISSN0022-1945
Autores Tópico(s)Plant responses to water stress
ResumoAbstract Chloroplast GAPDH (NADP+‐glyceraldehyde‐3‐phosphate dehydrogenase) (EC 1.2.1.13) is one of the photosynthetic enzymes which make up the set of reactions responsible for carbon fixation in plants. We here report that fully expanded green corn leaves showed diurnal variations in GAPDH mRNA level as well as enzyme activity in response to light:dark cycles. In continuous bright light the mRNA, but not the enzyme activity rhythm persisted. This is the first time a circadian rhythm in GAPDH mRNA level is reported; the existence of light‐driven rhythms in higher plants is thus further established. Abstracting keywords: Circadian rhythmsdiurnal variationsmRNANADP+‐glyceraldehyde‐3‐phosphate dehydrogenase Zea mays
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