Trap diversity and evolution in the family Droseraceae.
Trap diversity and evolution in the family Droseraceae.
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DOI：
10.4161/psb.24685
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发表时间：
2013-07
影响因子：
2.9
通讯作者：
Speck T
中科院分区：
文献类型：
--
作者：
Poppinga S;Hartmeyer SR;Masselter T;Hartmeyer I;Speck T
我们回顾了食肉开花植物茅膏菜科（石竹目）的诱捕机制。众所周知，其成员利用活性捕捉器（Aldrovanda、Dionaea）或活性粘蝇纸捕捉器（Drosera）来吸引、捕获、保留和消化猎物（主要是节肢动物），并吸收由此产生的营养。最近的研究揭示了 Aldrovanda vesiculosa（水车植物）和 Dionaea muscipula（维纳斯捕蝇草）的捕蝇器如何机械工作，以及这些看似相似的装置在功能形态和关闭机制方面有何不同。茅膏菜属（Drosera spp.）众所周知，其叶子上覆盖着胶状触手，这些触手都可以弯曲到卡住的猎物周围。最近，研究表明，该属存在比以前已知的更高的不同触手类型和陷阱配置的多样性，这可能反映了对不同猎物光谱的适应。基于这些最近的发现，我们最终评论了熟悉陷阱进化的可能方式。
We review trapping mechanisms in the carnivorous flowering plant family Droseraceae (order Caryophyllales). Its members are generally known to attract, capture, retain and digest prey animals (mainly arthropods) with active snap-traps (Aldrovanda, Dionaea) or with active sticky flypaper traps (Drosera) and to absorb the resulting nutrients. Recent investigations revealed how the snap-traps of Aldrovanda vesiculosa (waterwheel plant) and Dionaea muscipula (Venus’ flytrap) work mechanically and how these apparently similar devices differ as to their functional morphology and shutting mechanics. The Sundews (Drosera spp.) are generally known to possess leaves covered with glue-tentacles that both can bend toward and around stuck prey. Recently, it was shown that there exists in this genus a higher diversity of different tentacle types and trap configurations than previously known which presumably reflect adaptations to different prey spectra. Based on these recent findings, we finally comment on possible ways for intrafamiliar trap evolution.