HANABA TARANU regulates the shoot apical meristem and leaf development in cucumber (Cucumis sativus L.)

Journal of Experimental Botany
Lian DingXiaolan Zhang

Abstract

The shoot apical meristem (SAM) is essential for continuous organogenesis in higher plants, while the leaf is the primary source organ and the leaf shape directly affects the efficiency of photosynthesis. HANABA TARANU (HAN) encodes a GATA3-type transcription factor that functions in floral organ development, SAM organization, and embryo development in Arabidopsis, but is involved in suppressing bract outgrowth and promoting branching in grass species. Here the function of the HAN homologue CsHAN1 was characterized in cucumber, an important vegetable with great agricultural and economic value. CsHAN1 is predominantly expressed at the junction of the SAM and the stem, and can partially rescue the han-2 floral organ phenotype in Arabidopsis. Overexpression and RNAi of CsHAN1 transgenic cucumber resulted in retarded growth early after embryogenesis and produced highly lobed leaves. Further, it was found that CsHAN1 may regulate SAM development through regulating the WUSCHEL (WUS) and SHOOT MERISTEMLESS (STM) pathways, and mediate leaf development through a complicated gene regulatory network in cucumber.

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Citations

Aug 14, 2019·Journal of Experimental Botany·Xiaofeng LiuTao Wu
Mar 24, 2020·PLoS Biology·Shuangshuang YanXiaolan Zhang
Nov 25, 2017·The Plant Journal : for Cell and Molecular Biology·Dexuan MengWeiwei Jin
Aug 9, 2019·Proceedings of the National Academy of Sciences of the United States of America·Junjun ShenXiaolan Zhang
Jun 10, 2017·Journal of Integrative Plant Biology·Dongli GaoSanwen Huang
Nov 23, 2019·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Shengjun FengHuasen Wang
May 22, 2019·Frontiers in Plant Science·Alexey S KiryushkinKirill N Demchenko
Jul 2, 2021·Horticulture Research·Xiaofeng LiuXiaolan Zhang

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Methods Mentioned

BETA
dissection
transgenic
PCR
ChIP

Software Mentioned

MEGA
BLAST
MEGA5
GSDS
ClustalW

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