Photosynthetica 2004, 42(2):299-301 | DOI: 10.1023/B:PHOT.0000040604.92482.eb

Irradiation-Regulated Differential Accumulation of Chloroplast-Encoded Transcripts in Mature Leaves of Populus deltoides

S. Srivastava1, P.K. Trivedi1, P. Nath1
1 Plant Gene Expression Laboratory, National Botanical Research Institute, Lucknow-226 001, India

Steady state transcript levels of psbA, rbcL, atpB, and psbN genes accumulated differentially in mature leaves of a field-grown tree Populus deltoides during natural diurnal cycle and in dark adaptation followed by irradiation. The rbcL transcript accumulated independent of irradiation under diurnal conditions, which demonstrated a correlation with the phenomenon of midday depression in photosynthesis. The psbA and atpB transcripts accumulated more in dark whereas psbN accumulated more in light. Diurnal rhythm of gene expression in mature chloroplasts was independent of development related changes.

Additional key words: dark adaptation; diurnal cycle; midday depression; Northern analysis; ribulose-1,5-bisphosphate carbo-xylase, oxygenase

Published: June 1, 2004  Show citation

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Srivastava, S., Trivedi, P.K., & Nath, P. (2004). Irradiation-Regulated Differential Accumulation of Chloroplast-Encoded Transcripts in Mature Leaves of Populus deltoides. Photosynthetica, 42(2), 299-301. doi: 10.1023/B:PHOT.0000040604.92482.eb
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