Discovery of Shoot Branching Regulator Targeting Strigolactone Receptor DWARF14.

Discovery of Shoot Branching Regulator Targeting Strigolactone Receptor DWARF14.
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DOI:
10.1021/acscentsci.7b00554
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发表时间:
2018-02-28
影响因子:
18.2
通讯作者:
Hagihara S
Hagihara S
中科院分区:
化学1区
文献类型:
--
作者:
Yoshimura M;Sato A;Kuwata K;Inukai Y;Kinoshita T;Itami K;Tsuchiya Y;Hagihara S

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DWARF14(D14)是独脚金内酯受体,其在抑制枝分枝中起核心作用,因此是增加作物产量和生物量的潜在靶标。最近,我们报道了一种荧光开启探针,Yoshimulactone绿色(YLG),它产生一个强的荧光后水解D14型独脚金内酯受体。在此,我们将基于YLG的体外测定应用于高通量化学筛选,并鉴定了一种新的小分子DL1作为D14的有效抑制剂。DL1与内源独脚金内酯竞争,从而增加模式植物拟南芥和水稻中的芽分枝数。因此,DL1不仅可以作为了解D14受体在植物生长发育中的生物学作用的工具,而且可以作为一种有效的农用化学品来提高作物产量。我们发现了一种小分子DL1,它可以抑制D14独脚金内酯受体,从而诱导植物的枝条分枝。DL 1可用于植物生物学以及提高作物产量。
DWARF14 (D14) is a strigolactone receptor that plays a central role in suppression of shoot branching, and hence is a potential target to increase crop productions and biomass. Recently, we reported a fluorescence turn-on probe, Yoshimulactone Green (YLG), which generates a strong fluorescence upon the hydrolysis by D14-type strigolactone receptors. Herein, we applied a YLG-based in vitro assay to a high-throughput chemical screening and identified a novel small molecule DL1 as a potent inhibitor of D14. DL1 competes with endogenous strigolactones, thereby increasing the number of shoot branching in a model plant Arabidopsis as well as in rice. Thus, DL1 is expected to be useful not only as a tool to understand the biological roles of D14 receptors in plant growth and development, but also as a potent agrochemical to improve the crop yield. We discovered a small molecule DL1 that inhibits D14 strigolactone receptor and hence induces shoot branching in plants. DL1 can be used in plant biology as well as in improving crop yield.
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