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Plant Physiol. 1993 Dec;103(4):1041-6.

Conversion of perianth into reproductive organs by ectopic expression of the tobacco floral homeotic gene NAG1.

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  • 1University of California, Department of Biology, San Diego, La Jolla 92093-0116.

Abstract

Mutations in the AGAMOUS (AG) gene of Arabidopsis thaliana result in the conversion of reproductive organs, stamens and carpels, into perianth organs, sepals and petals. We have isolated and characterized the putative AG gene from Nicotiana tabacum, NAG1, whose deduced protein product shares 73% identical amino acid residues with the Arabidopsis AG gene product. RNA tissue in situ hybridizations show that NAG1 RNA accumulates early in tobacco flower development in the region of the floral meristem that will later give rise to stamens and carpels. Ectopic expression of NAG1 in transgenic tobacco plants results in a conversion of sepals and petals into carpels and stamens, respectively, indicating that NAG1 is sufficient to convert perianth into reproductive floral organs.

PMID:
7507255
[PubMed - indexed for MEDLINE]
PMCID:
PMC159087
Free PMC Article
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