Heterologous overexpression of the GbTCP5 gene increased root hair length, root hair and stem trichome density, and lignin content in transgenic Arabidopsis

Gene
Yi WangZhiyong Ni

Abstract

Teosinte branched1/cycloidea/proliferating cell factor1 (TCP) is a plant-specific protein family member involved in plant growth and development. However, the functions of most members of the cotton TCP family are unknown. In this study, the GbTCP5 gene encodes a sea-island cotton class II TCP CIN subclass transcription factor. The GbTCP5 transcription factor is located in the nucleus, has transcriptional activation activity, and can bind to TCP II cis-acting elements. GbTCP5 was widely expressed in tissues with the highest transcript level in the calyx. GbTCP5 is expressed at different developmental stages of the fiber and has significantly high transcriptional level expression in the fibers at 20, 30 and 35 days post anthesis (DPA). Heterologous overexpression of the GbTCP5 gene increased root hair length, root hair and stem trichome density, and stem lignin content in transgenic Arabidopsis compared to the wild type (WT). GbTCP5 binds the promoters of the GL3, EGL3, CPC, MYB46, LBD30, CesA4, VND7, CCOMT1, and CAD5 genes to upregulate their expression. Moreover, the homologous genes of these genes are expressed in the fibers of different developmental stages of the sea-island cotton fiber. These results indicate that GbTCP5 r...Continue Reading

References

Sep 21, 2010·Trends in Plant Science·Marc LibaultGary Stacey
Jul 27, 2012·Trends in Biotechnology·Shahid Mansoor, Andrew H Paterson
May 1, 2015·Scientific Reports·Pradipto Mukhopadhyay, Akhilesh Kumar Tyagi
Feb 25, 2017·Plant Biotechnology Journal·Xudong SunYunqiang Yang
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Jun 18, 2019·Plant Science : an International Journal of Experimental Plant Biology·Yuehua YuHui Zhang
Jan 26, 2020·Trends in Plant Science·Zuoren YangFuguang Li

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