Characterization and expression of Arabidopsis UDP-sugar pyrophosphorylase. Litterer LA, Schnurr JA, Plaisance KL, Storey KK, Gronwald JW, Somers DA. Plant Physiol Biochem. 2006 Apr;44(4):171-80.
...... detected in cotyledons, trichomes and vascular tissues of the primary root. In the inflorescence of older plants, high levels of GUS staining were detected in cauline leaves, the epidermis of the stem and in pollen. In silico analysis of AtUSP expression in developing pollen indicates that transcript levels increase as development proceeds from the uninucleate to the tricellular stage. The results suggest that AtUSP plays an important role in pollen development in Arabidopsis. ......
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