根部接种有益土壤微生物可增强昆虫取食和虫卵沉积引起的植物间接防御能力

IF 4.6 1区环境科学与生态学 Q1 ECOLOGY

Functional Ecology Pub Date : 2024-05-23 DOI:10.1111/1365-2435.14594

Tuğcan Alınç, Ezio Peri, Livio Torta, Salvatore Guarino, Stefano Colazza, Bart Lievens, Antonino Cusumano

引用次数: 0

摘要

植物可以通过释放产卵诱导植物挥发物（OIPVs）招募寄生虫来应对昆虫卵的沉积。针对虫卵沉积而招募食肉昆虫被认为是一种间接防御策略，在植物界非常普遍。近年来，越来越多的证据表明，微生物定植可影响植物对昆虫草食性反应的强度，但目前还没有关于有益微生物如何调节昆虫卵沉积引起的间接防御的信息。在这项工作中，我们评估了接种有益土壤真菌毛霉 T22 菌株对由番茄、南方绿蝽 Nezara viridula 及其相关卵寄生虫 Trissolcus basalis 组成的三营养系统的影响。我们使用 Y 型管嗅觉测定法来评估寄生虫对定植了有益土壤微生物的植物所释放的 OIPV 的行为反应。我们还使用气相色谱-质谱联用仪（GC-MS）研究了根部接种 T. harzianum T22 是否以及如何影响诱导植物挥发物的化学成分。在嗅觉试验中，我们发现根部接种 T. harzianum T22 会增强卵寄生虫对番茄植株的吸引力，从而诱发 N. viridula 的取食和产卵活动。特别是，卵寄生虫更喜欢先前接种过 T. harzianum T22 的番茄植株释放的 OIPV，而不是未接种植株释放的 OIPV。此外，化学分析显示，根部接种 T. harzianum T22 会导致 OIPV 的成分发生变化，这与行为观察结果一致。在造成未接种植物和接种植物 OIPVs 化学成分差异的化合物中，化学分析发现了绿叶挥发物（(Z)-3-庚烯-1-醇、(E,E)-2,4-己二烯醛）以及萜类化合物（萜品烯-4-醇、α-柚烯和δ-榄香烯）。总之，我们的研究结果表明，有益的土壤微生物能增强由取食和产卵引起的植物间接防御能力，从而拓宽了我们对植物对虫卵反应的认识。我们的研究结果强调了考虑微生物的作用对于充分理解植物、食草动物卵及其相关卵寄生虫之间错综复杂的相互作用的重要性。在期刊博客上免费阅读本文的通俗摘要。

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Root inoculation with beneficial soil microbes enhances indirect plant defences induced by insect feeding and egg deposition

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Root inoculation with beneficial soil microbes enhances indirect plant defences induced by insect feeding and egg deposition

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来源期刊

Functional Ecology 环境科学-生态学

CiteScore

9.00

自引率

1.90%

发文量

243

审稿时长

4 months

期刊介绍： Functional Ecology publishes high-impact papers that enable a mechanistic understanding of ecological pattern and process from the organismic to the ecosystem scale. Because of the multifaceted nature of this challenge, papers can be based on a wide range of approaches. Thus, manuscripts may vary from physiological, genetics, life-history, and behavioural perspectives for organismal studies to community and biogeochemical studies when the goal is to understand ecosystem and larger scale ecological phenomena. We believe that the diverse nature of our journal is a strength, not a weakness, and we are open-minded about the variety of data, research approaches and types of studies that we publish. Certain key areas will continue to be emphasized: studies that integrate genomics with ecology, studies that examine how key aspects of physiology (e.g., stress) impact the ecology of animals and plants, or vice versa, and how evolution shapes interactions among function and ecological traits. Ecology has increasingly moved towards the realization that organismal traits and activities are vital for understanding community dynamics and ecosystem processes, particularly in response to the rapid global changes occurring in earth’s environment, and Functional Ecology aims to publish such integrative papers.