Apr, 2016
Suppression of B function strongly supports the modified ABCE model in Tricyrtis sp (Liliaceae)
SCIENTIFIC REPORTS
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- Volume
- 6
- Number
- Language
- English
- Publishing type
- Research paper (scientific journal)
- DOI
- 10.1038/srep24549
- Publisher
- NATURE PUBLISHING GROUP
B 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.
- Link information
- ID information
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- DOI : 10.1038/srep24549
- ISSN : 2045-2322
- Web of Science ID : WOS:000374221000003