Suppression of B function strongly supports the modified ABCE model in Tricyrtis sp. (Liliaceae)

Masahiro Otani; Ahmad Sharifi; Shosei Kubota; Kanako Oizumi; Fumi Uetake; Masayo Hirai; Yoichiro Hoshino; Akira Kanno; Masaru Nakano

doi:10.1038/srep24549

journal article Open Access Apr 15, 2016

Suppression of B function strongly supports the modified ABCE model in Tricyrtis sp. (Liliaceae)

Masahiro Otani Ahmad Sharifi Shosei Kubota Kanako Oizumi Fumi Uetake Masayo Hirai Yoichiro Hoshino Akira Kanno Masaru Nakano

Scientific Reports Vol. 6 No. 1 · Springer Science and Business Media LLC

View at Publisher Save 10.1038/srep24549

Abstract

AbstractB class MADS-box genes play important roles in petal and stamen development. Some monocotyledonous species, including liliaceous ones, produce flowers with petaloid tepals in whorls 1 and 2. A modified ABCE model has been proposed to explain the molecular mechanism of development of two-layered petaloid tepals. However, direct evidence for this modified ABCE model has not been reported to date. To clarify the molecular mechanism determining the organ identity of two-layered petaloid tepals, we used chimeric repressor gene-silencing technology (CRES-T) to examine the suppression of B function in the liliaceous ornamental Tricyrtis sp. Transgenic plants with suppressed B class genes produced sepaloid tepals in whorls 1 and 2 instead of the petaloid tepals as expected. In addition, the stamens of transgenic plants converted into pistil-like organs with ovule- and stigma-like structures. This report is the first to describe the successful suppression of B function in monocotyledonous species with two-layered petaloid tepals, and the results strongly support the modified ABCE model.

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Published: Apr 15, 2016
Vol/Issue: 6(1)
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Cite This Article

Masahiro Otani, Ahmad Sharifi, Shosei Kubota, et al. (2016). Suppression of B function strongly supports the modified ABCE model in Tricyrtis sp. (Liliaceae). Scientific Reports, 6(1). https://doi.org/10.1038/srep24549

Suppression of B function strongly supports the modified ABCE model in Tricyrtis sp. (Liliaceae)

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