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title: Three TFL1 homologues regulate floral initiation in the biofuel plant Jatropha curcas
author: Chaoqiong Li;  Qiantang Fu;  Longjian Niu;  Li Luo;  Jianghua Chen;  Zengfu Xu
Issued Date: 2017
Abstract: Recent research revealed that TERMINAL FLOWER 1 (TFL1) homologues are involved in the critical developmental process of floral initiation in several plant species. In this study, the functions of three putative TFL1 homologues (JcTFL1a, JcTFL1b and JcTFL1c) in the biofuel plant Jatropha curcas were analysed using the transgenic approach. JcTFL1b and JcTFL1c, but not JcTFL1a, could complement the TFL1 function and rescue early flowering and determinate inflorescence phenotype in tfl1-14 Arabidopsis mutant, thus suggesting that JcTFL1b and JcTFL1c may be homologues of TFL1. Transgenic Jatropha overexpressing JcTFL1a, JcTFL1b or JcTFL1c showed late flowering, whereas only JcTFL1b and JcTFL1c overexpression delayed flowering in transgenic Arabidopsis. JcTFL1b-RNAi transgenic Jatropha consistently exhibited moderately early flowering phenotype. JcFT and JcAP1 were significantly downregulated in transgenic Jatropha overexpressing JcTFL1a, JcTFL1b or JcTFL1c, which suggested that the late flowering phenotype of these transgenic Jatropha may result from the repressed expression of JcFT and JcAP1. Our results indicate that these three JcTFL1 genes play redundant roles in repressing flowering in Jatropha.
Source: Scientific Reports
Appears in Collections:能源植物分子育种研究组_期刊论文

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Recommended Citation:
Chaoqiong Li,Qiantang Fu,Longjian Niu,et al. Three Tfl1 Homologues Regulate Floral Initiation In The Biofuel Plant Jatropha Curcas[J]. Scientific Reports,2017,7(X):43090.

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