The front cover picture shows that the yellow blooming cultivar of the Iceland poppy (Papaver nudicaule) presents a particular combination of color and scent that can help pollinators distinguish them from other color varieties. Our study indicates that the indole moiety of the yellow flower pigments, the nudicaulins, and the volatile indole emitted by these flowers, are products of the same biochemical pathway. Behavioral experiments revealed that honeybees trained to stimuli providing combinations of color and odor showed an improved discrimination performance compared to honeybees trained to odor alone. We propose that conserved biosynthetic pathways account for the evolution of color–scent associations in P. nudicaule and that these associations can help pollinators to “find the right flowers”. More information can be found in the full paper by J. Martínez‐Harms, B. Schneider, et al. on page 1553 in Issue 14, 2018 (DOI: 10.1002/cbic.201800155).

中文翻译：

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封面：罂粟花中的生物合成和功能色觉关联及其对授粉媒介的影响（ChemBioChem 14/2018）

封面图片显示冰岛罂粟（Papaver nudicaule）的黄色盛开品种具有特定的颜色和气味组合，可帮助授粉媒介将其与其他颜色品种区分开。我们的研究表明，黄色花色素的吲哚部分，芥子油苷和这些花发出的挥发性吲哚是同一生化途径的产物。行为实验表明，与单独训练有异味的蜜蜂相比，经过训练能提供颜色和气味组合的蜜蜂显示出更好的辨别性能。我们建议保守的生物合成途径解释了体育中色-香缔合的演变。这些协会可以帮助授粉媒介“找到合适的花朵”。可以在J.Martínez-Harms，B。Schneider等人的全文中找到更多信息。就在第14期，2018页1553（：10.1002 / cbic.201800155 DOI）。