Specific Expression of the Chloroplast Gene for RNA Polymerase (rpoB) at an Early Stage of Leaf Development in Rice

Inada, Hitoshi; Kusumi, Kensuke; Nishimura, Mitsuo; Iba, Koh
March 1996
Plant & Cell Physiology;Mar1996, Vol. 37 Issue 2, p229
Academic Journal
The rpoB gene for the rβ subunit of rice chloroplast RNA polymerase was found to be highly expressed in unexpanded immature leaves that contained proplastids, indicating the specific expression of rpoB at an early stage of chloroplast development. A putative transcription start site (tss) was identified, but the 5′ upstream region of the tss had no sequences resembling typical –35 and –10 elements. A palindromic sequence and high AT-content were recognized.


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