A tobacco flower-specific gene encodes a polyphenol oxidase

A tobacco flower-specific gene encodes a polyphenol oxidase Identification of pistil-expressed genes is an important step in understanding pistil development and function in plant reproduction. A tobacco stigma/style cDNA library was differentially screened and several cDNA clones were isolated. One of these tobacco genes, designated tobP1, is characterized here. TobP1 encodes a protein highly homologous to plant polyphenol oxidases. Northern blot analysis of total RNA extracted from different organs and probed with tobP1 cDNA identified a single transcript that is exclusively present in flower organs (petals, stamens, and predominantly in pistils). The tobP1 gene is co-ordinately regulated during development in pistils and stamens, and is not induced in mature leaves even under stress conditions. TobP1 belongs to a multigene family, as reported for PPO in other plant species. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Plant Molecular Biology Springer Journals

A tobacco flower-specific gene encodes a polyphenol oxidase

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Kluwer Academic Publishers
Copyright © 1998 by Kluwer Academic Publishers
Life Sciences; Biochemistry, general; Plant Sciences; Plant Pathology
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