Developmental Gradients of Gene Expression in the Emerging Fourth Leaf of Lolium Temulentum
The growing leaf of a graminaceous plant represents a linear gradient of cell age and differentiation. Cellular function modulates from growth and elongation at the enclosed basal region to photosynthesis in the leaf blade. The conparatively small cell division and elongation zone is the region which controls the rate of leaf expansion, and is thus an important determinant of plant productivity . We have previously speculated that a comnon regulatory mechanism may turn off growth processes and activate chloroplast assembly. In order to gain a deeper understanding of the factors regulating chloroplast biogenesis, the development of photosynthetic function in fourth leaves of Lolium temulentum has been examined using both Northern and Western analysis.
KeywordsWestern Analysis Elongation Zone Plastid Gene Ribulose Bisphosphate Photosynthesis Research
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