Valdés-Correcher Elena, Kadiri Yasmine, Bourdin Audrey, Mrazova Anna, Bălăcenoiu Flavius, Branco Manuela, Bogdziewicz Michal, Bjørn Mona Chor, Damestoy Thomas, Dobrosavljević Jovan, Faticov Maria, Gripenberg Sofia, Gossner Martin M, de Groot Maarten, Hagge Jonas, Hoopen Jan Ten, Lövei Gabor L, Milanović Slobodan, Musolin Dmitrii L, Mäntylä Elina, Moreira Xoaquín, Piotti Andrea, Rodríguez Víctor M, Saez-Asensio Cristina, Sallé Aurélien, Sam Katerina, Sobral Mar, Tack Ayco J M, Varela Zulema, Castagneyrol Bastien
Integrative Ecology Group, Estación Biológica de Doñana, Seville, Spain.
Univ. Bordeaux, INRAE, BIOGECO, Cestas, France.
Oecologia. 2025 Apr 5;207(4):61. doi: 10.1007/s00442-025-05696-2.
An increase in biotic interactions towards lower latitudes is one of the most consistent patterns in ecology. Higher temperatures and more stable climatic conditions at low latitudes are thought to enhance biotic interactions, accelerating biological evolution and leading to stronger anti-herbivore defences in plants. However, some studies report contradictory findings, highlighting the need for further investigation into the underlying mechanisms. We used a combination of field observations and feeding trials in controlled environments to investigate the effect of climate on chemical defences and insect herbivory in pedunculate oak (Quercus robur L.) throughout most of its geographic range in Europe, while controlling for physical defences. The concentration of lignin, flavonoids, and total phenolics increased significantly with temperature, whereas both field herbivory and weight of spongy moth (Lymantria dispar L.) larvae were negatively influenced by temperature. Lignin concentration positively influenced the weight of spongy moth larvae whereas it had no effect on field herbivory. We found no evidence of strong positive relationships between insect herbivory and larvae growth with leaf defences. Our study underscores the complexity of plant-herbivore interactions along climatic gradients and highlights the need for further research to disentangle these intricate relationships.
生物相互作用向低纬度地区增加是生态学中最一致的模式之一。低纬度地区较高的温度和更稳定的气候条件被认为会增强生物相互作用，加速生物进化，并导致植物更强的抗食草动物防御能力。然而，一些研究报告了相互矛盾的结果，凸显了进一步研究潜在机制的必要性。我们结合了实地观察和在可控环境中的取食试验，以研究气候对欧洲大部分地理范围内的欧洲栓皮栎（Quercus robur L.）化学防御和昆虫食草作用的影响，同时控制物理防御。木质素、黄酮类化合物和总酚类物质的浓度随温度显著增加，而实地食草作用和舞毒蛾（Lymantria dispar L.）幼虫的体重均受到温度的负面影响。木质素浓度对舞毒蛾幼虫的体重有正向影响，而对实地食草作用没有影响。我们没有发现昆虫食草作用和幼虫生长与叶片防御之间存在强正相关关系的证据。我们的研究强调了植物 - 食草动物相互作用沿气候梯度的复杂性，并凸显了进一步研究以理清这些复杂关系的必要性。
