Venus flytrap carnivorous lifestyle builds on herbivore defense strategies.
Venus flytrap carnivorous lifestyle builds on herbivore defense strategies.
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DOI：
10.1101/gr.202200.115
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发表时间：
2016-06
期刊：
影响因子：
7
通讯作者：
Hedrich R
中科院分区：
文献类型：
--
作者：
Bemm F;Becker D;Larisch C;Kreuzer I;Escalante-Perez M;Schulze WX;Ankenbrand M;Van de Weyer AL;Krol E;Al-Rasheid KA;Mithöfer A;Weber AP;Schultz J;Hedrich R
虽然植物性食肉动物的概念在达尔文时代就已为人所知，但动物进食的分子机制仍然未知，主要是由于完全缺乏基因组信息。在这里，我们表明，转录景观的Dionaea陷阱是戏剧性地转向信号转导和营养物质运输昆虫喂养后，触摸激素信号和蛋白质分泌占主导地位。与此同时，一般防御反应的大量诱导伴随着细胞死亡相关基因/过程的抑制。我们假设Dionaea的食肉综合征是通过古老的防御途径的扩展而进化的，用营养物质的获取取代了细胞死亡。
Although the concept of botanical carnivory has been known since Darwin's time, the molecular mechanisms that allow animal feeding remain unknown, primarily due to a complete lack of genomic information. Here, we show that the transcriptomic landscape of the Dionaea trap is dramatically shifted toward signal transduction and nutrient transport upon insect feeding, with touch hormone signaling and protein secretion prevailing. At the same time, a massive induction of general defense responses is accompanied by the repression of cell death–related genes/processes. We hypothesize that the carnivory syndrome of Dionaea evolved by exaptation of ancient defense pathways, replacing cell death with nutrient acquisition.