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Regulation of the expression of NADP-malic enzyme by UV-B, red and far-red light in maize seedlings BJMBR
Casati,P.; Drincovich,M.F.; Edwards,G.E.; Andreo,C.S..
The induction of nicotinamide adenine dinucleotide phosphate-malic enzyme (NADP-ME) in etiolated maize (Zea mays) seedlings by UV-B and UV-A radiation, and different levels of photosynthetically active radiation (PAR, 400-700 nm) was investigated by measuring changes in activity, protein quantity and RNA levels as a function of intensity and duration of exposure to the different radiations. Under low levels of PAR, exposure to UV-B radiation but not UV-A radiation for 6 to 24 h caused a marked increase in the enzyme levels similar to that observed under high PAR in the absence of UV-B. UV-B treatment of green leaves following a 12-h dark period also caused an increase in NADP-ME expression. Exposure to UV-B radiation for only 5 min resulted in a rapid...
Tipo: Info:eu-repo/semantics/article Palavras-chave: C4 photosynthesis; NADP-malic enzyme; UV-B radiation; Photosynthesis; Red light; Far-red light.
Ano: 1999 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1999001000002
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