Evolution of Strigolactone Perception by Seeds of Parasitic Plants: Reinventing the Wheel.
Evolution of Strigolactone Perception by Seeds of Parasitic Plants: Reinventing the Wheel.
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DOI：
10.1016/j.molp.2016.01.010
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发表时间：
2016-04
期刊：
影响因子：
27.5
通讯作者：
Guosheng Xiong;Jiayang Li;Steven M. L. Smith-Steven M. L.-Smith-1406024108
中科院分区：
文献类型：
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作者：
Guosheng Xiong;Jiayang Li;Steven M. L. Smith-Steven M. L.-Smith-1406024108
独脚金家族的根寄生植物产生种子，这些种子适应发芽，以响应从寄主植物根部渗出的草内酯(SLS)。这些寄生虫对玉米和高粱等作物造成的殖民会造成巨大的产量损失和农民的生计损失(Westwood等人，2010年)。在寄主根部附近检测到微量的SL，引发了使寄主处于寄主控制之下的迷惑过程。发表在三篇科学论文(Conn等人，2015年；Toh等人，2015年；Tuchiya等人，2015年)上的新结果现在确定这些寄生虫含有多个推定的SL受体，但令人惊讶的是，它们可能没有将识别的SL受体用于此目的。相反，所提出的受体是通过编码一个假定的受体的基因的复制和多样化来进化的，该受体对未知的SL类似信号做出反应，并已知在拟南芥中触发种子萌发(图1)。
The root-parasitic plants of the witchweed family (Orobanchanceae) produce seeds that are adapted to germinate in response to strigolactones (SLs) exuded from the roots of their host plants. The resulting colonization of crops such as maize and sorghum by these parasites can cause massive losses in production and to the livelihoods of farmers (Westwood et al., 2010). The bewitching process, which brings the host under the control of the parasite, is elicited by the detection of trace amounts of SL in the vicinity of the host roots. New results published in three Science papers (Conn et al., 2015; Toh et al., 2015; Tsuchiya et al., 2015) have now determined that these parasites contain multiple putative SL receptors but, surprisingly, they may not have made use of the recognized SL receptor for this purpose. Instead, the proposed receptors have evolved by duplication and diversification of a gene encoding a putative receptor that responds to an unidentified SL-like signal and is known to trigger seed germination in Arabidopsis (Figure 1).