Morpho-molecular, cultural and pathological characterization of Athelia rolfsii causing southern blight disease on common bean

Paul, Swapan Kumar; Gupta, Dipali Rani; Mahapatra, Chandan Kumar; Rani, Kanistha; Islam, Tofazzal

doi:10.1016/j.heliyon.2023.e16136

Cited by 7 publications

(2 citation statements)

References 44 publications

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“…have been co-infected with other saprobic and wood-degrading microbes (Amylostereum areolatum, Inonotus sp., Penicillium sp., Stereum sanguinolentum, Talaromyces sp., Trichoderma atroviridis) after the infection of Heterobasidion spp (Kovalchuk et al, 2018). Athelia is a broad host range pathogen that causes various diseases in plants, like stem rot in peanuts (Yan et al, 2022), southern blight in common bean (Paul et al, 2023) and collar rot in soybean (Zheng et al, 2021). It has been found that A. rolfsii can cause white rot in onions (Konjengbam and Devi, 2022).…”

Section: Discussionmentioning

confidence: 99%

Metagenomic insight to apprehend the fungal communities associated with leaf blight of Welsh onion in Taiwan

Jayasinghe,

Chang,

Knobloch

et al. 2024

Front. Plant Sci.

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Plants are associated with a large diversity of microbes, and these complex plant-associated microbial communities are critical for plant health. Welsh onion (Allium fistulosum L.) is one of the key and oldest vegetable crops cultivated in Taiwan. The leaf of the Welsh onion is one of the famous spices in Taiwanese cuisine, thus, it is crucial to control foliar diseases. In recent years, Welsh onion cultivation in Taiwan has been severely threatened by the occurrence of leaf blight disease, greatly affecting their yield and quality. However, the overall picture of microbiota associated with the Welsh onion plant is still not clear as most of the recent etiological investigations were heavily based on the isolation of microorganisms from diseased plants. Therefore, studying the diversity of fungal communities associated with the leaf blight symptoms of Welsh onion may provide information regarding key taxa possibly involved in the disease. Therefore, this investigation was mainly designed to understand the major fungal communities associated with leaf blight to identify key taxa potentially involved in the disease and further evaluate any shifts in both phyllosphere and rhizosphere mycobiome assembly due to foliar pathogen infection by amplicon sequencing targeting the Internal Transcribed Spacer (ITS) 1 region of the rRNA. The alpha and beta-diversity analyses were used to compare the fungal communities and significant fungal groups were recognized based on linear discriminant analyses. Based on the results of relative abundance data and co-occurrence networks in symptomatic plants we revealed that the leaf blight of Welsh onion in Sanxing, is a disease complex mainly involving Stemphylium and Colletotrichum taxa. In addition, genera such as Aspergillus, Athelia and Colletotrichum were abundantly found associated with the symptomatic rhizosphere. Alpha-diversity in some fields indicated a significant increase in species richness in the symptomatic phyllosphere compared to the asymptomatic phyllosphere. These results will broaden our knowledge of pathogens of Welsh onion associated with leaf blight symptoms and will assist in developing effective disease management strategies to control the progress of the disease.

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Section: Discussionmentioning

confidence: 99%

Metagenomic insight to apprehend the fungal communities associated with leaf blight of Welsh onion in Taiwan

Jayasinghe,

Chang,

Knobloch

et al. 2024

Front. Plant Sci.

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“…It is a member of the order atheliales, which comprise of several members that are potential pathogens of plants and symbionts of animals [3]. The pathogen was first reported on field grown tomato but currently, over 500 different plants are host of A. rolfsii infection [4]. Agroecological areas that is characterized by high relative humidity and soil-water level alongside warm temperature range are preferred conditions for disease establishment and level of susceptibility by different host plant is not limited to host growth stage [5,2,6].…”

Section: Introductionmentioning

confidence: 99%

Incidence and Severity of Vine Rot and Wilt Disease of Telfairia occidentalis Caused by Athelia rolfii in Southern, Nigeria

Ismaila,

Okon,

Lovina

et al. 2024

APRJ

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Telfairia occidentalis is an important vegetable crop that is intensively grown in Southern Nigeria for its utilization in home dishes and commercialization. However, its production is being limited by vine rot infection caused by Athelia rolfsii. Information on the epidemiology in growing regions is important for the disease management. Hence, this study was conducted to investigate the incidence and severity of vine rot disease of Telfairia occidentalis in commercial fields across Abak, Akwa Ibom State. A total of nine established T. occidentalis fields in three locations, including the Cross River Basin Development Authority, Abak-Irrigation Project, were visited during the peak of dry season (November – December), 2021 and raining season (June - August), 2022 respectively. The fields were scored for vine rot disease incidence and severity using a well described scale. Random samples from symptomatic plants were collected and taken to the laboratory for fungi isolation and identification. Koch postulate was carried out to confirm the causal agents on one susceptible genotype of T. occidentalis in the study area. Overall number of plants showing varying levels of symptoms reaches 84% and total values for mean incidences’ rate (3.31 ± 0.06 and 3.19 ± 0.06) were recorded for both sampling period respectively. The result of this study revealed that the prevalent fungal pathogen that is responsible for vine rot and wilt disease of T. occidentalis in the study is A. rolfsii and presented information on the level and severity of infection that is indicative of the need to implement appropriate control measures for A. rolfsii disease in the study area.

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The soil-borne fungal pathogen Athelia rolfsii: past, present, and future concern in legumes

Patra,

Acharya,

Panigrahi

et al. 2023

Folia Microbiol

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Morpho-molecular, cultural and pathological characterization of Athelia rolfsii causing southern blight disease on common bean

Cited by 7 publications

References 44 publications

Metagenomic insight to apprehend the fungal communities associated with leaf blight of Welsh onion in Taiwan

Metagenomic insight to apprehend the fungal communities associated with leaf blight of Welsh onion in Taiwan

Incidence and Severity of Vine Rot and Wilt Disease of Telfairia occidentalis Caused by Athelia rolfii in Southern, Nigeria

The soil-borne fungal pathogen Athelia rolfsii: past, present, and future concern in legumes

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