biostudies-literatureUnknown10Kostyun JL<h4>Background</h4>Understanding the evolution of novel features requires homology assessments at different levels of biological organization. In flowering plants, floral coronas that play various roles in plant-pollinator interactions have evolved multiple times independently, but are highly variable in their final position and overall morphology. Coronas of the Solanaceae species <i>Jaltomata calliantha</i> are found between the corolla and stamens, adjacent to the gynoecium, and form cups that house copious amounts of their characteristic blood red nectar. To test the hypothesis that <i>J. calliantha</i> coronas evolved as an outgrowth of stamens and therefore have staminal identity, we assessed their development, floral organ identity gene expression, and cellular morphology.<h4>ResultEvoDevo9https://www.ebi.ac.uk/biostudies/studies/S-EPMC6475103biostudies-literatureEvidence of a largely staminal origin for the <i>Jaltomata calliantha</i> (Solanaceae) floral corona.PMC6475103Kostyun JLPreston JCRobertson JEfalseEvidence of a largely staminal origin for the <i>Jaltomata calliantha</i> (Solanaceae) floral corona.<h4>Background</h4>Understanding the evolution of novel features requires homology assessments at different levels of biological organization. In flowering plants, floral coronas that play various roles in plant-pollinator interactions have evolved multiple times independently, but are highly variable in their final position and overall morphology. Coronas of the Solanaceae species <i>Jaltomata calliantha</i> are found between the corolla and stamens, adjacent to the gynoecium, and form cups that house copious amounts of their characteristic blood red nectar. To test the hypothesis that <i>J. calliantha</i> coronas evolved as an outgrowth of stamens and therefore have staminal identity, we assessed their development, floral organ identity gene expression, and cellular morphology.<h4>Result2019-01-01T00:00:00Z20192026-07-17T01:41:19.037Z2019-06-06T22:58:44ZS-EPMC64751033101967410.1186/s13227-019-0122-9