He Jian, Dai Qi, Qi Yuxuan, Wu Zhiwen, Fang Qianyun, Su Pei, Huang Miaoqin, Burgess J Grant, Ke Caihuan, Feng Danqing
State-Province Joint Engineering Laboratory of Marine Bioproducts and Technology, College of Ocean & Earth Sciences, Xiamen University, Xiamen 361102, China.
State-Province Joint Engineering Laboratory of Marine Bioproducts and Technology, College of Ocean & Earth Sciences, Xiamen University, Xiamen 361102, China; State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361102, China.
iScience. 2019 Sep 27;19:691-702. doi: 10.1016/j.isci.2019.08.022. Epub 2019 Aug 17.
Most marine benthic invertebrates have a pelagic larval phase, after which they settle preferentially on or near conspecific adults, forming aggregations. Although settlement pheromones from conspecific adults have been implicated as critical drivers of aggregation for more than 30 years, surprisingly few have been unambiguously identified. Here we show that in the invasive dreissenid mussel Mytilopsis sallei (an ecological and economic pest), three common purines (adenosine, inosine, and hypoxanthine) released from adults in a synergistic and precise ratio (1:1.125:3.25) serve as an aggregation pheromone by inducing conspecific larval settlement and metamorphosis. Our results demonstrate that simple common metabolites can function as species-specific pheromones when present in precise combinations. This study provides important insights into our understanding of the ecology and communication processes of invasive organisms and indicates that the combination and ratio of purines might be critical for purine-based signaling systems that are fundamental and widespread in nature.
大多数海洋底栖无脊椎动物都有一个浮游幼虫阶段，之后它们会优先在同种成年个体上或其附近定居，形成聚集群体。尽管来自同种成年个体的定居信息素被认为是聚集的关键驱动因素已有30多年，但令人惊讶的是，明确鉴定出的却很少。在此，我们表明，在入侵性的贻贝科贻贝类动物萨氏肌蛤（一种生态和经济害虫）中，成年个体以协同且精确的比例（1:1.125:3.25）释放的三种常见嘌呤（腺苷、肌苷和次黄嘌呤），通过诱导同种幼虫的定居和变态，充当聚集信息素。我们的结果表明，简单的常见代谢物以精确组合存在时可作为物种特异性信息素。这项研究为我们理解入侵生物的生态学和通讯过程提供了重要见解，并表明嘌呤的组合和比例可能对自然界中基本且广泛存在的基于嘌呤的信号系统至关重要。
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