Disease risk of the foliar endophyte Colletotrichum from invasive Ageratina adenophora to native plants and crops

IF 1.9 3区环境科学与生态学 Q3 ECOLOGY

Fungal Ecology Pub Date : 2024-09-27 DOI:10.1016/j.funeco.2024.101386

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引用次数: 0

Abstract

The disease risk driven by foliar fungi asymptomatically infecting invasive plants has rarely been determined. In this study, we selected 44 foliar Colletotrichum endophytes isolated from the invasive plant Ageratina adenophora that are phylogenetically closely related to the C. gloeosporioides complex, C. boninense complex, C. orchidearum complex, and C. acutatum complex and evaluated their potential virulence and ability to transmit spores to native plants and cash crops both in vitro and in vivo. We verified that some foliar endophyte Colletotrichum strains adversely affect the leaf and seed germination of native plants and cash crops. Some strains reduce the growth and yield of tomato (SL) (Solanum lycopersicum) and pepper (CA) (Capsicum annuum) plants and even cause the death of strawberry (FA) plants (Fragaria ananassa). Moreover, we confirmed that A. adenophora leaves could horizontally transmit Colletotrichum to surrounding crop plants in vivo. Therefore, a high abundance of Colletotrichum asymptomatically associated with A. adenophora leaves might increase disease risk in surrounding native plants and cash crops. Our results provide a new perspective for regional ecological risk assessment of invasive plants and prevention of economic plant diseases in the invaded range.

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入侵 Ageratina adenophora 的叶片内生菌 Colletotrichum 对本地植物和作物的疾病风险

由无症状感染入侵植物的叶片真菌引起的疾病风险很少被确定。在这项研究中，我们选择了从入侵植物 Ageratina adenophora 中分离出的 44 株叶片内生 Colletotrichum，它们在系统发育上与 C. gloeosporioides 复合体、C. boninense 复合体、C. orchidearum 复合体和 C. acutatum 复合体密切相关，并在体外和体内评估了它们的潜在毒力以及向本地植物和经济作物传播孢子的能力。我们证实，一些叶片内生菌 Colletotrichum 菌株会对本地植物和经济作物的叶片和种子发芽造成不利影响。一些菌株会降低番茄（SL）（Solanum lycopersicum）和辣椒（CA）（Capsicum annuum）植株的生长和产量，甚至导致草莓（FA）植株（Fragaria ananassa）死亡。此外，我们还证实，A. adenophora 的叶片可以在体内将 Colletotrichum 水平传播给周围的作物植株。因此，与腺角蛙叶片相关的大量无症状 Colletotrichum 可能会增加周围本地植物和经济作物的疾病风险。我们的研究结果为入侵植物的区域生态风险评估和预防被入侵地区的经济植物病害提供了一个新的视角。

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来源期刊

Fungal Ecology 环境科学-生态学

CiteScore

5.80

自引率

3.40%

发文量

审稿时长

3 months

期刊介绍： Fungal Ecology publishes investigations into all aspects of fungal ecology, including the following (not exclusive): population dynamics; adaptation; evolution; role in ecosystem functioning, nutrient cycling, decomposition, carbon allocation; ecophysiology; intra- and inter-specific mycelial interactions, fungus-plant (pathogens, mycorrhizas, lichens, endophytes), fungus-invertebrate and fungus-microbe interaction; genomics and (evolutionary) genetics; conservation and biodiversity; remote sensing; bioremediation and biodegradation; quantitative and computational aspects - modelling, indicators, complexity, informatics. The usual prerequisites for publication will be originality, clarity, and significance as relevant to a better understanding of the ecology of fungi.