导致意大利南部芒果树衰退的 Pleurostoma richardsiae 的特征和致病性

IF 1.9 3区农林科学 Q2 AGRONOMY

Phytopathologia Mediterranea Pub Date : 2024-05-13 DOI:10.36253/phyto-15104

G. R. Leonardi, D. Aiello, G. Gusella, G. Polizzi

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引用次数: 0

摘要

在巴勒莫省（意大利西西里岛东部）的一个果园里，对出现枝干枯死、内部木质部坏死和衰退症状的芒果树（Mangifera indica）进行了调查。从有症状的木质组织中持续分离出一种类似于褶菌的真菌。根据形态学以及 ITS 和 tub2 序列的系统发育分析，确定该真菌为 Pleurostoma richardsiae。通过给 2 年生芒果树苗的茎部接种具有代表性的分离菌株的菌丝栓和分生孢子悬浮液，进行了致病性试验。接种两个月后，接种点周围出现了坏死病变，从坏死组织中再次分离出了 P. richardsiae。这是 P. richardsiae 导致芒果树枯萎和衰退的首次报道。

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Characterization and pathogenicity of Pleurostoma richardsiae causing decline of mango trees in Southern Italy

Mango trees (Mangifera indica) showing symptoms of twig and branch dieback, internal wood necroses, and decline, were surveyed in an orchard in Palermo province (Eastern Sicily, Italy). A Pleurostoma-like fungus was consistently isolated from symptomatic wood tissues. Based on morphology and phylogenetic analysis of ITS and tub2 sequences, the fungus was identified as Pleurostoma richardsiae. A pathogenicity test was conducted by inoculating stems of 2-year-old mango seedlings with mycelium plugs and conidium suspensions of a representative isolate. Two months after inoculation, necrotic lesions were observed around the inoculation points, and P. richardsiae was reisolated from the necrotic tissues. This is the first report of P. richardsiae causing dieback and decline of mango trees.

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来源期刊

Phytopathologia Mediterranea 生物-植物科学

CiteScore

4.40

自引率

8.30%

发文量

审稿时长

6-12 weeks

期刊介绍： Phytopathologia Mediterranea is an international journal edited by the Mediterranean Phytopathological Union. The journal’s mission is the promotion of plant health for Mediterranean crops, climate and regions, safe food production, and the transfer of new knowledge on plant diseases and their sustainable management. The journal deals with all areas of plant pathology, including etiology, epidemiology, disease control, biochemical and physiological aspects, and utilization of molecular technologies. All types of plant pathogens are covered, including fungi, oomycetes, nematodes, protozoa, bacteria, phytoplasmas, viruses, and viroids. The journal also gives a special attention to research on mycotoxins, biological and integrated management of plant diseases, and the use of natural substances in disease and weed control. The journal focuses on pathology of Mediterranean crops grown throughout the world. The Editorial Board of Phytopathologia Mediterranea has recently been reorganised, under two Editors-in-Chief and with an increased number of editors.