昆虫作为特大城市树木中植物病原体的潜在传播媒介:哥伦比亚波哥大的一项案例研究

IF 2.5 3区 环境科学与生态学 Q2 BIODIVERSITY CONSERVATION Urban Ecosystems Pub Date : 2024-03-19 DOI:10.1007/s11252-024-01524-2
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引用次数: 0

摘要

摘要 城市树木提供了许多生态系统服务,这些服务可能会受到病原体(包括植物病原体)的影响。植原体会导致受感染植物的生长调节失衡,从而产生偏离正常植物结构等症状。在哥伦比亚波哥大,"星形拟囊霉菌 "和 "fraxini 拟囊霉菌 "感染了至少 11 种城市树木,其中包括安第斯橡树。该树种是哥伦比亚和巴拿马的特有树种,在哥伦比亚安第斯野生森林中发挥着重要的生态作用。在波哥大,与安第斯栎树植物病原体传播相关的昆虫媒介知识非常匮乏。在这项工作中,我们对安第斯橡树的内生动物群进行了取样,并评估了蝉科和鞘翅目类群作为波哥大植物病原体潜在传播媒介的作用。采用直接和间接取样方法,在波哥大三个不同地点的安第斯橡树以及邻近树木上捕获了昆虫。通过形态学和分子方法对昆虫进行了鉴定,并对植物病原体进行了检测。总共捕获了 13 个分类群中的 510 种蝉科昆虫和 8 个分类群中的 129 种鞘翅目昆虫;昆虫的丰富度和丰度取决于种类和取样地点。数量最多的物种是 Scaphytopius (Convelinus) sp.(蝉科)和 Acizzia uncatoides(Psylloidea)。对植原体呈阳性的叶蝉有 Chiasmodolini、Dikrella (Readionia) sp.、Empoasca sp.和 Scaphytopius sp.类群。我们的研究结果表明,有几种潜在的植物病原体可能会将植物病原体传播到安第斯橡树和其他城市树种上。有必要进行传播测试,以评估潜在病媒的传播能力。
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Insects as potential vectors of phytoplasmas in urban trees in a mega-city: a case study in Bogotá, Colombia

Abstract

Urban trees offer many ecosystem services which can be affected by pathogens, including phytoplasmas. Phytoplasmas cause regulator growth imbalances in infected plants, which produce deviations from the normal plant architecture, among other symptoms. In Bogotá, Colombia, ‘Candidatus Phytoplasma asteris’ and ‘Candidatus Phytoplasma fraxini’ infect at least 11 species of urban trees, including Andean oak. This tree species is endemic to Colombia and Panama, and it plays an important ecologic role in the Colombian Andes wild forests. In Bogotá, knowledge about the insect vectors associated with the transmission of phytoplasmas to Andean oak is scarce. In this work we sampled the entomofauna of Andean oaks and evaluated the role of Cicadellidae and Psylloidea taxa as potential vectors of phytoplasmas in Bogotá. Insects were captured using direct and indirect sampling methods from Andean oaks at three contrasting sites in Bogotá, and also from neighbouring trees. The insects were identified by morphological and molecular methods and tested for phytoplasmas. In total, 510 Cicadellidae members of 13 taxa and 129 Psylloidea of 8 taxa were captured; richness and abundance depended on the type and sampling site. The most abundant species were Scaphytopius (Convelinus) sp. (Cicadellidae) and Acizzia uncatoides (Psylloidea). Leafhoppers positive for phytoplasmas were Chiasmodolini, Dikrella (Readionia) sp., Empoasca sp. and Scaphytopius sp. taxa. Our results suggest that several potential species of phytoplasmas may be dispersing phytoplasmas to Andean oaks and other urban tree species. It is necessary to conduct transmission tests to evaluate the transmission capacity of the potential vectors.

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来源期刊
Urban Ecosystems
Urban Ecosystems BIODIVERSITY CONSERVATION-ECOLOGY
CiteScore
5.70
自引率
6.90%
发文量
113
期刊介绍: Urban Ecosystems is an international journal devoted to scientific investigations of urban environments and the relationships between socioeconomic and ecological structures and processes in urban environments. The scope of the journal is broad, including interactions between urban ecosystems and associated suburban and rural environments. Contributions may span a range of specific subject areas as they may apply to urban environments: biodiversity, biogeochemistry, conservation biology, wildlife and fisheries management, ecosystem ecology, ecosystem services, environmental chemistry, hydrology, landscape architecture, meteorology and climate, policy, population biology, social and human ecology, soil science, and urban planning.
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