Characterization and pathogenicity of fungal species associated with hazelnut trunk diseases in North-western Italy

IF 2.2 4区农林科学 Q2 PLANT SCIENCES Journal of Plant Pathology Pub Date : 2024-02-09 DOI:10.1007/s42161-024-01595-2

Ilaria Martino, Matteo Monchiero, M. Lodovica Gullino, Vladimiro Guarnaccia

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Abstract

Italy is the second largest hazelnut producer worldwide and Piedmont is one of the most productive regions in the country. The changing climatic condition and fungal trunk diseases (FTD) can have a severe impact on this crop. Particularly, the considerable spread of Cytospora cankers (‘Mal dello stacco’) and dieback represent a serious concern for producers. Thus, considering the limited studies on the causal agents, different surveys were conducted in seven hazelnut orchards during 2021 and 2022. Eight fungal species were identified: Anthostoma decipiens, Botryosphaeria dothidea, Diaporthe eres, Dia. rudis, Diplodia seriata, Dip. subglobosa, Dothiorella parva and Nothophoma brennandiae. Species identification was achieved through multilocus phylogeny and morphology assessment. All the fungal species were pathogenic on healthy hazelnut plants (cultivar Tonda Gentile) and A. decipiens and Dia. eres were the most aggressive. The present study is the first report of B. dothidea and Dia. eres as causal agents of FTD on hazelnut in Italy and of Dia. rudis, Dip. subglobosa and N. brennandiae worldwide. Moreover, the study provides clarification of the fungal pathogens associated with FTD on this crop in Piedmont, thus laying the base for further studies on epidemiology, ecology and management strategies.

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意大利西北部榛子树干病害相关真菌种类的特征和致病性

意大利是全球第二大榛子生产国，而皮埃蒙特则是该国产量最高的地区之一。不断变化的气候条件和真菌性树干病害（FTD）会对这种作物造成严重影响。尤其是胞囊菌溃疡病（"Mal dello stacco"）和枯萎病的大量蔓延是生产者严重关切的问题。因此，考虑到对致病菌的研究有限，我们在 2021 年和 2022 年期间对七个榛子果园进行了不同的调查。确定了 8 种真菌：Anthostoma decipiens、Botryosphaeria dothidea、Diaporthe eres、Dia. rudis、Diplodia seriata、Dip. subglobosa、Dothiorella parva 和 Nothophoma brennandiae。通过多焦点系统发育和形态学评估进行了物种鉴定。所有真菌种类对健康的榛子植株（栽培品种为 Tonda Gentile）都具有致病性，其中以 A. decipiens 和 Dia.本研究首次报告了 B. dothidea 和 Dia. eres 是意大利榛子上 FTD 的病原菌，也是全球首次报告 Dia.此外，这项研究还澄清了与皮埃蒙特这种作物上的榛子褐斑病有关的真菌病原体，从而为进一步研究流行病学、生态学和管理策略奠定了基础。

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来源期刊

Journal of Plant Pathology 生物-植物科学

CiteScore

3.10

自引率

4.50%

发文量

218

审稿时长

6-12 weeks

期刊介绍： The Journal of Plant Pathology (JPP or JPPY) is the main publication of the Italian Society of Plant Pathology (SiPAV), and publishes original contributions in the form of full-length papers, short communications, disease notes, and review articles on mycology, bacteriology, virology, phytoplasmatology, physiological plant pathology, plant-pathogeninteractions, post-harvest diseases, non-infectious diseases, and plant protection. In vivo results are required for plant protection submissions. Varietal trials for disease resistance and gene mapping are not published in the journal unless such findings are already employed in the context of strategic approaches for disease management. However, studies identifying actual genes involved in virulence are pertinent to thescope of the Journal and may be submitted. The journal highlights particularly timely or novel contributions in its Editors’ choice section, to appear at the beginning of each volume. Surveys for diseases or pathogens should be submitted as "Short communications".