First report of Colletotrichum gloeosporioides causing severe anthracnose on Parthenocissus tricuspidata in China

IF 2.5 2区农林科学 Q1 AGRONOMY

Crop Protection Pub Date : 2024-10-09 DOI:10.1016/j.cropro.2024.106977

Quanchao Wang , Guiyong Cao , Haonan Wang, Xudong Zhou

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Abstract

Parthenocissus tricuspidata is widely cultivated as an ornamental plant. However, severe anthracnose on their leaves has been observed indicating over 80% infection in Hangzhou, Zhejiang Province. The purpose of this study was to characterize the disease causal agent. Colletotrichum-like fungal strains were isolated from the diseased spots. On MEA, the fungal colony appeared white with abundant and dense aerial mycelia. The selected isolates were identified as C. gloeosporioides and C. siamensethe using multi-gene (ITS, ACT, CAL, GAPDH and TUB2) sequence phylogenetic analysis combined with morphological characteristicsPathogenicity tests were conducted by inoculating conidial suspensions on healthy P. tricuspidata leaves, followed by re-isolation and characterization to fulfill the Koch's postulates. This represents the first report that C. gloeosporioides causes anthracnose on P. tricuspidata in China. The potential impact of the disease deserves further investigation considering its high occurrence for sustainable management.

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在中国首次报告由球形孢子菌（Colletotrichum gloeosporioides）引起三尖杉严重炭疽病的病例

三裂叶木（Parthenocissus tricuspidata）被广泛栽培为观赏植物。然而，在浙江省杭州市观察到其叶片上有严重的炭疽病，感染率超过 80%。本研究的目的是确定病原菌的特征。从病斑中分离出了类似 Colletotrichum 的真菌菌株。在 MEA 上，真菌菌落呈白色，气生菌丝丰富而密集。通过多基因（ITS、ACT、CAL、GAPDH 和 TUB2）序列系统发育分析，并结合形态特征，将分生孢子悬浮液接种到健康的三尖杉叶片上进行致病性试验，然后重新分离和鉴定，以符合科赫假说。这是中国首次报道球孢子菌引起三尖杉炭疽病。考虑到该病的高发生率，其潜在影响值得进一步研究，以实现可持续管理。

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来源期刊

Crop Protection 农林科学-农艺学

CiteScore

6.10

自引率

3.60%

发文量

200

审稿时长

29 days

期刊介绍： The Editors of Crop Protection especially welcome papers describing an interdisciplinary approach showing how different control strategies can be integrated into practical pest management programs, covering high and low input agricultural systems worldwide. Crop Protection particularly emphasizes the practical aspects of control in the field and for protected crops, and includes work which may lead in the near future to more effective control. The journal does not duplicate the many existing excellent biological science journals, which deal mainly with the more fundamental aspects of plant pathology, applied zoology and weed science. Crop Protection covers all practical aspects of pest, disease and weed control, including the following topics: -Abiotic damage- Agronomic control methods- Assessment of pest and disease damage- Molecular methods for the detection and assessment of pests and diseases- Biological control- Biorational pesticides- Control of animal pests of world crops- Control of diseases of crop plants caused by microorganisms- Control of weeds and integrated management- Economic considerations- Effects of plant growth regulators- Environmental benefits of reduced pesticide use- Environmental effects of pesticides- Epidemiology of pests and diseases in relation to control- GM Crops, and genetic engineering applications- Importance and control of postharvest crop losses- Integrated control- Interrelationships and compatibility among different control strategies- Invasive species as they relate to implications for crop protection- Pesticide application methods- Pest management- Phytobiomes for pest and disease control- Resistance management- Sampling and monitoring schemes for diseases, nematodes, pests and weeds.