Analysis of promoter activity reveals that GmFTL2 expression differs from that of the known Flowering Locus T genes in soybean

文献类型： 外文期刊

第一作者： Liu, Limin

作者： Liu, Limin;Mahi, Asia Adam Elzamzami;Wu, Xiaoxia;Chen, Qingshan;Zhang, Xiaomei;Chen, Fulu;Fu, Yong-Fu

作者机构：

关键词： Flowering Locus T;Cotyledon;Microgametophyte;Embryo;Root tip

期刊名称：CROP JOURNAL （ 影响因子：4.407； 五年影响因子：5.687 ）

ISSN： 2095-5421

年卷期： 2017 年 5 卷 5 期

页码：

收录情况： SCI

摘要： Regulation of flowering is one of the key issues in crop yield. The Flowering Locus T (FT) gene is a well-known florigen, which integrates various signals from multiple flowering-regulation pathways to initiate flowering. We previously reported that there are at least six FT genes (GmFTL1?6) in soybean displaying flowering activity. However, the individual functions of genes GmFTL1?6 remain to be identified. In this study, we cloned the GmFTL2 promoter (GmFTL(pro)) from soybean (Glycine max) cultivar Tianlong 1 and analyzed its motifs bioinformatically and its expression patterns using both a transgenic approach and quantitative RT-PCR (qRT-PCR). In GmFTL(pro)::GUS transgenic lines, GUS signals were enriched in cotyledons, hypocotyledons, pollen, embryos, and root tips in a photoperiod-independent manner. qRT-PCR confirmed the GUS reporter results. Our results suggest that GmFTL2 expression is regulated by developmental and tissue-specific clues and plays roles in seedling establishment and the development of microgametophytes, embryos, and roots. (C) 2017 Crop Science Society of China Institute of Crop Science, CAAS. Production and hosting by Elsevier B.V.

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