Paraphoma garibaldii sp. nov. causing leaf spot disease of Campanula rapunculoides in Italy.

Fungal systematics and evolution Pub Date : 2022-06-01 Epub Date: 2022-01-28 DOI:10.3114/fuse.2022.09.03

V Guarnaccia, I Martino, G Tabone, P W Crous, M L Gullino

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Abstract

Leaf and stem spots are among the most important diseases compromising ornamental plants worldwide. In this study, Paraphoma garibaldii sp. nov. is described from leaf lesions on Campanula rapunculoides in Piedmont, Northern Italy. The new species was characterised using a polyphasic approach including morphological characterisation and a multilocus molecular phylogenetic analysis based on partial nucleotide sequences of the translation elongation factor 1-α (tef1), the internal transcribed spacers (ITS) region and the β-tubulin (tub2) markers. Pathogenicity tests and the fulfilment of Koch's postulates confirm P. garibaldii as a novel foliar pathogen of Campanula rapunculoides. Presently, the fungal infection due to Paraphoma garibaldii is known from a single location in Italy, and further surveys are required to determine its distribution and relative importance. Citation: Guarnaccia V, Martino I, Tabone G, Crous PW, Gullino ML (2022). Paraphoma garibaldii sp. nov. causing leaf spot disease of Campanula rapunculoides in Italy. Fungal Systematics and Evolution 9: 19-26. doi: 10.3114/fuse.2022.09.03.

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Paraphoma garibaldii sp.

叶斑病和茎斑病是危害全球观赏植物的最重要病害之一。在这项研究中，从意大利北部皮埃蒙特（Piedmont）金钟罩（Campanula rapunculoides）的叶片病变中描述了 Paraphoma garibaldii sp.该新物种的特征采用了多相法，包括形态特征和基于翻译延伸因子 1-α (tef1)、内部转录间隔区 (ITS) 和 β-微管蛋白 (tub2) 标记的部分核苷酸序列的多焦点分子系统学分析。致病性试验和科赫推论证实，P. garibaldii 是油甘蓝的一种新型叶面病原菌。目前，意大利只有一个地方发现了由花瓣伞菌引起的真菌感染，还需要进一步调查以确定其分布情况和相对重要性。引用：Guarnaccia V、Martino I、Tabone G、Crous PW、Gullino ML（2022 年）。Paraphoma garibaldii sp.Fungal Systematics and Evolution 9: 19-26. doi: 10.3114/fuse.2022.09.03.

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Fungal systematics and evolution

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