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Int. J. Mol. Sci. 2016, 17(3), 303; doi:10.3390/ijms17030303

AfAP2-1, An Age-Dependent Gene of Aechmea fasciata, Responds to Exogenous Ethylene Treatment

Ministry of Agriculture Key Laboratory of Crop Gene Resources and Germplasm Enhancement in Southern China, Institute of Tropical Crop Genetic Resources, Chinese Academy of Tropical Agricultural Sciences, Danzhou 571737, China
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Author to whom correspondence should be addressed.
Academic Editor: Jianhua Zhu
Received: 5 January 2016 / Revised: 19 February 2016 / Accepted: 19 February 2016 / Published: 27 February 2016
(This article belongs to the Special Issue Plant Molecular Biology)
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Abstract

The Bromeliaceae family is one of the most morphologically diverse families with a pantropical distribution. To schedule an appropriate flowering time for bromeliads, ethylene is commonly used to initiate flower development in adult plants. However, the mechanism by which ethylene induces flowering in adult bromeliads remains unknown. Here, we identified an APETALA2 (AP2)-like gene, AfAP2-1, in Aechmea fasciata. AfAP2-1 contains two AP2 domains and is a nuclear-localized protein. It functions as a transcriptional activator, and the activation domain is located in the C-terminal region. The expression level of AfAP2-1 is higher in juvenile plants than in adult plants, and the AfAP2-1 transcript level was rapidly and transiently reduced in plants treated with exogenous ethylene. Overexpression of AfAP2-1 in Arabidopsis thaliana results in an extremely delayed flowering phenotype. These results suggested that AfAP2-1 responds to ethylene and is a putative age-dependent flowering regulator in A. fasciata. View Full-Text
Keywords: Aechmea fasciata; APETALA2; transcriptional activator; flowering; bromeliad Aechmea fasciata; APETALA2; transcriptional activator; flowering; bromeliad
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Lei, M.; Li, Z.-Y.; Wang, J.-B.; Fu, Y.-L.; Ao, M.-F.; Xu, L. AfAP2-1, An Age-Dependent Gene of Aechmea fasciata, Responds to Exogenous Ethylene Treatment. Int. J. Mol. Sci. 2016, 17, 303.

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