Geographic distribution of terpenoid chemotypes in Tanacetum vulgare mediates tansy aphid occurrence but not abundance

IF 3.1 2区 环境科学与生态学 Q2 ECOLOGY Oikos Pub Date : 2024-04-09 DOI:10.1111/oik.10320
Humay Rahimova, Annika Neuhaus‐Harr, Mary V. Clancy, Yuan Guo, Robert R. Junker, Lina Ojeda‐Prieto, Hampus Petrén, Matthias Senft, Sharon E. Zytynska, Wolfgang W. Weisser, Robin Heinen, Jörg‐Peter Schnitzler
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Abstract

Intraspecific variation of specialized metabolites in plants, such as terpenoids, are used to determine chemotypes. Tansy Tanacetum vulgare exhibits diverse terpenoid profiles that affect insect communities. However, it is not fully known whether patterns of their chemical composition and associated insects vary beyond the community scale. Here, we investigated the geographic distribution of mono‐ and sesquiterpenoid chemotypes in tansy leaves and their relationships with specific insect communities across Germany. We sampled tansy leaves from ten plants with and five plants without aphids in each of 26 sites along a north–south and west–east transect in Germany. Hexane‐extracted metabolites from leaf tissues were analyzed by gas chromatography‐mass spectrometry (GC‐MS). Plant morphological traits, aphid occurrence and abundance, and occurrence of ants were recorded locally. The effect of plant chemotype, plant morphological parameters, and abiotic site parameters such as soil types, temperature and precipitation on insect occurrences were analyzed. Plants clustered into four monoterpenoid and four sesquiterpenoid chemotype classes. Monoterpene classes differed in their latitudinal distribution, whereas sesquiterpenes were more evenly distributed across the transect. Aphid and ant occurrence was influenced by monoterpenoids. Plants of monoterpenoid class 1 were colonized by aphids and ants significantly more often than expected by chance, whereas in other classes there were no significant differences. Aphid abundance was affected by soil type, and average annual temperature positively correlated with the occurrence of ants. We found significant geographic patterns in the distribution of tansy chemodiversity and show that monoterpenoids affect aphid and ant occurrence, while the soil type can influence aphid abundance. We show that geographic variation in plant chemistry influences insect community assembly on tansy plants.
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Tanacetum vulgare 中萜类化学型的地理分布介导了丹顶鹤蚜虫的发生,而非其数量
植物中特殊代谢物(如萜类化合物)的种内差异可用于确定化学类型。丹参(Tansy Tanacetum vulgare)表现出多种萜类化合物,对昆虫群落产生影响。然而,它们的化学成分和相关昆虫的模式是否会在群落尺度之外发生变化,目前还不完全清楚。在这里,我们研究了丹参叶片中单萜类和倍半萜类化学型的地理分布,以及它们与德国各地特定昆虫群落的关系。我们沿德国南北和东西横断面的 26 个地点,分别从 10 株有蚜虫和 5 株无蚜虫的植物中采集了丹参叶片样本。通过气相色谱-质谱(GC-MS)分析了从叶片组织中提取的正己烷代谢物。当地记录了植物的形态特征、蚜虫的发生和丰度以及蚂蚁的发生情况。分析了植物化学型、植物形态参数以及土壤类型、温度和降水量等非生物地点参数对昆虫发生的影响。植物分为四个单萜和四个倍半萜化学型类别。单萜类的纬度分布不同,而倍半萜类在横断面上的分布较为均匀。蚜虫和蚂蚁的发生受单萜类化合物的影响。单萜 1 类植物被蚜虫和蚂蚁定殖的频率明显高于预期,而其他类别的植物则没有明显差异。蚜虫的数量受土壤类型的影响,而年平均温度与蚂蚁的发生率呈正相关。我们发现了丹参化学多样性分布的重要地理模式,并表明单萜会影响蚜虫和蚂蚁的发生,而土壤类型会影响蚜虫的丰度。我们的研究表明,植物化学成分的地理差异会影响丹参植物上昆虫群落的组合。
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来源期刊
Oikos
Oikos 环境科学-生态学
CiteScore
6.20
自引率
5.90%
发文量
152
审稿时长
6-12 weeks
期刊介绍: Oikos publishes original and innovative research on all aspects of ecology, defined as organism-environment interactions at various spatiotemporal scales, so including macroecology and evolutionary ecology. Emphasis is on theoretical and empirical work aimed at generalization and synthesis across taxa, systems and ecological disciplines. Papers can contribute to new developments in ecology by reporting novel theory or critical empirical results, and "synthesis" can include developing new theory, tests of general hypotheses, or bringing together established or emerging areas of ecology. Confirming or extending the established literature, by for example showing results that are novel for a new taxon, or purely applied research, is given low priority.
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