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Genome-wide analysis of GATA factors in moso bamboo (Phyllostachys edulis) unveils that PeGATAs regulate shoot rapid-growth and rhizome development

Taotao Wang, Yong Yang, Shuaitong Lou, Wei Wei, Zhixin Zhao, Chentao Lin, Liuyin Ma
doi: https://doi.org/10.1101/744003
Taotao Wang
Basic Forestry and Proteomics Research Center, College of Forestry, Fujian Provincial Key Laboratory of Haixia Applied Plant Systems Biology, Fujian Agriculture and Forestry University, Fuzhou 350002, China
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Yong Yang
Basic Forestry and Proteomics Research Center, College of Forestry, Fujian Provincial Key Laboratory of Haixia Applied Plant Systems Biology, Fujian Agriculture and Forestry University, Fuzhou 350002, China
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Shuaitong Lou
Fujian Provincial Key Laboratory of Plant functional Biology, College of Life Sciences, Fuzhou 350002, China
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Wei Wei
Basic Forestry and Proteomics Research Center, College of Forestry, Fujian Provincial Key Laboratory of Haixia Applied Plant Systems Biology, Fujian Agriculture and Forestry University, Fuzhou 350002, China
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Zhixin Zhao
College of Biopharmaceutical and Food Engineering, Shangluo University, Shangluo 726000, China
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Chentao Lin
Department of Molecular, Cell and Developmental Biology, University of California, Los Angeles, CA 90095, USA
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Liuyin Ma
Fujian Provincial Key Laboratory of Plant functional Biology, College of Life Sciences, Fuzhou 350002, China
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  • For correspondence: lma223@fafu.edu.cn
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ABSTRACT

Background Moso bamboo is well-known for its rapid-growth shoots and widespread rhizomes. However, the regulatory genes of these two processes are largely unexplored. GATA factors regulate many developmental processes, but its role in plant height control and rhizome development remains unclear.

Results Here, we found that bamboo GATA factors (PeGATAs) are involved in the growth regulation of bamboo shoots and rhizomes. Bioinformatics and evolutionary analysis showed that there are 31 PeGATA factors in bamboo, which can be divided into three subfamilies. Light, hormone, and stress-related cis-elements were found in the promoter region of the PeGATA genes. Gene expression of 12 PeGATA genes was regulated by phytohormone-GA but there was no correlation between auxin and PeGATA gene expression. More than 27 PeGATA genes were differentially expressed in different tissues of rhizomes, and almost all PeGATAs have dynamic gene expression level during the rapid-growth of bamboo shoots. These results indicate that PeGATAs regulate rhizome development and bamboo shoot growth partially via GA signaling pathway. In addition, PeGATA26, a rapid-growth negative regulatory candidate gene modulated by GA treatment, was overexpressed in Arabidopsis, and over-expression of PeGATA26 significantly repressed Arabidopsis primary root length and plant height. The PeGATA26 overexpressing lines were also resistant to exogenous GA treatment, further emphasizing that PeGATA26 inhibits plant height from Arabidopsis to moso bamboo via GA signaling pathway.

Conclusions Our results provide an insight into the function of GATA transcription factors in regulating shoot rapid-growth and rhizome development, and provide genetic resources for engineering plant height.

Copyright 
The copyright holder for this preprint is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under a CC-BY-NC 4.0 International license.
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Posted August 22, 2019.
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Genome-wide analysis of GATA factors in moso bamboo (Phyllostachys edulis) unveils that PeGATAs regulate shoot rapid-growth and rhizome development
Taotao Wang, Yong Yang, Shuaitong Lou, Wei Wei, Zhixin Zhao, Chentao Lin, Liuyin Ma
bioRxiv 744003; doi: https://doi.org/10.1101/744003
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Genome-wide analysis of GATA factors in moso bamboo (Phyllostachys edulis) unveils that PeGATAs regulate shoot rapid-growth and rhizome development
Taotao Wang, Yong Yang, Shuaitong Lou, Wei Wei, Zhixin Zhao, Chentao Lin, Liuyin Ma
bioRxiv 744003; doi: https://doi.org/10.1101/744003

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