First Report of <i>Lasiodiplodia pseudotheobromae</i> Causing Trunk Cankers in <i>Citrus reticulata</i> in Pakistan

Ahmed, Muhammad Shahzad; Shafique, Maryam; Anwaar, Hafiz Arslan; Sarfraz, Sohaib; Tufail, Muhammad Rizwan; Fayyaz, Amna; Muntaha, Sabeen; Haque, K. M. F.; Ghuffar, Salman; Amrao, Luqman

doi:10.1094/pdis-12-19-2683-pdn

Cited by 7 publications

(4 citation statements)

References 2 publications

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“…For examples, L. brasiliense , L. citricola , L. iraniensis , L. pseudotheobromae , L. theobromae, and L. subglobosa were found to cause necrotic lesions and gummosis on Persian lime plants ( C. latifolia ) in several regions of Mexico [ 54 ]. In Pakistan, L. iraniensis and L. pseudotheobromae have been identified as the causal agents for tip dieback in C. reticula and trunk cankers in C. reticulate , respectively [ 55 , 56 ]. Moreover, previous studies have reported that L. citricola , L. guilinensis , L. huangyanensis , L. iraniensis , L. linhaiensis , L. microconidia , L. ponkanicola , L. pseudotheobromae , and L. theobromae caused branch diseases in citrus plants in China [ 43 , 57 , 58 ].…”

Section: Discussionmentioning

confidence: 99%

Morphology Characterization, Molecular Identification, and Pathogenicity of Fungal Pathogen Causing Kaffir Lime Leaf Blight in Northern Thailand

Suwannarach

Khuna

Kumla

et al. 2022

Plants

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Thailand is known to be the largest producer of kaffir lime leaf products in the global market. In 2021, leaf blight was found on kaffir lime plants (Citrus hystrix DC.) in Lamphun Province of northern Thailand. This disease has been associated with significant economic losses. However, there have been no prior reports of leaf blight on kaffir lime plants in Thailand or anywhere else in the world. In this study, causal fungi were isolated from lesions of kaffir lime plants and a total of three fungal isolates were obtained. All causal fungi were identified as Lasiodiplodia chinensis based on morphological characteristics and the phylogenetic analysis of combined sequences of the internal transcribed spacer (ITS) of ribosomal DNA, the translation elongation factor 1-alpha (tef-1), β-tubulin (tub), and RNA polymerase II subunit (rbp2) genes. Pathogenicity tests were conducted and the results revealed that all isolated fungi caused symptoms of leaf blight on inoculated leaves. This outcome was similar to symptoms that naturally occur and have been observed in the field. This is the first report on kaffir lime leaf blight caused by L. chinensis. Our study will provide information of high value for the development of effective strategies for the monitoring and prevention of this disease.

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Section: Discussionmentioning

confidence: 99%

Morphology Characterization, Molecular Identification, and Pathogenicity of Fungal Pathogen Causing Kaffir Lime Leaf Blight in Northern Thailand

Suwannarach

Khuna

Kumla

et al. 2022

Plants

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“…in China and T€ urkiye (Awan et al, 2016;Chen et al, 2021). It is known to cause pre-harvest fruit rot in Mangifera indica in Malaysia (Munirah et al, 2017), stem canker and significant damage in Celtis sinensis seedlings in China (Liang et al, 2020), Acacia mangiumin in Venezuela (Castro-Medina et al, 2014), Citrus reticulata in Pakistan (Ahmed et al, 2020) and Malus pumilain in China (Xue et al, 2019). It is known to cause dieback in Ormosa pinnatain China , in Mangi feraindica (Kwon et al, 2017) and dieback and gummosis in Prunus salicina in T€ urkiye (Endes and Kayım, 2022).…”

Section: Reported Evidence Of Impactmentioning

confidence: 99%

Commodity risk assessment of Prunus persica and P. dulcis plants from Türkiye

Bragard¹,

Baptista²,

Chatzivassiliou³

et al. 2023

EFS2

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The European Commission requested the EFSA Panel on Plant Health to prepare and deliver risk assessments for commodities listed in Commission Implementing Regulation (EU) 2018/2019 as ‘High risk plants, plant products and other objects’. This Scientific Opinion covers plant health risks posed by plants of Prunus persica and P. dulcis , as budwood/graftwood, rooted or grafted on rootstocks of either P. persica, P. dulcis, P. armeniaca, P. davidiana or their hybrids, imported from Türkiye, taking into account the available scientific information, including the technical information provided by Türkiye. All pests associated with the commodity were evaluated against specific criteria for their relevance for this opinion. Four quarantine pests (peach rosette mosaic virus, tomato ringspot virus, Anoplophora chinensis, Scirtothrips dorsalis ) and 14 non‐regulated pests ( Hoplolaimus galeatus, Lasiodiplodia pseudotheobromae, Neoscytalidium dimidiatum, Neoscytalidium novaehollandiae, Didesmococcus unifasciatus, Euzophera semifuneralis, Lepidosaphes malicola, Lepidosaphes pistaciae, Maconellicoccus hirsutus, Malacosoma parallela, Nipaecoccus viridis, Phenacoccus solenopsis, Pochazia shantungensis, Russellaspis pustulans ) that fulfilled all relevant criteria were selected for further evaluation. For these 18 pests, the risk mitigation measures proposed in the technical Dossier from Türkiye were evaluated taking into account the possible limiting factors. For the selected pests, an expert judgement is given on the likelihood of pest freedom taking into consideration the risk mitigation measures acting on the pest, including uncertainties associated with the assessment. The degree of pest freedom varies among the pests evaluated, with fungi from Botryosphaeriaceae family ( L. pseudotheobromae, N. dimidiatum and N. novaehollandiae ) being the pests most frequently expected on the imported plants. The Expert Knowledge Elicitation indicated with 95% certainty that between 9,813 and 10,000 bundles (consisting of 10 or 25 plants each) per 10,000 would be free from the above‐mentioned fungi in the Botryosphaeriaceae family .

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“…It is known to cause pre-harvest fruit rot in Mangifera indica in Malaysia (Munirah, 2017), stem canker and significant damage in Celtis sinensis seedlings in China (Liang et al, 2019), in Acacia mangium in Venezuela (Castro-Medina et al, 2014), Citrus reticulata in Pakistan (Ahmed et al, 2020) and Malus pumila in China (Xue et al, 2019).…”

Section: Reported Evidence Of Impactmentioning

confidence: 99%

“…-Dried and cracked bark, -Canker on twigs, branches or trunks, -Stunting, -Wood discoloration, -Dieback, -Decline, -Gummosis (Citrus reticulata) (Trakunyingcharoen et al, 2015a,b;Li et al, 2016;Munirah, 2017;Sultana et al, 2018;Ahmed et al, 2020;Farr and Rossman, online).…”

Section: Symptoms On Trees (Persea Americana and Havea Brasilensis)mentioning

confidence: 99%

Commodity risk assessment of Juglans regia plants from Turkey

Bragard¹,

Dehnen‐Schmutz²,

Serio³

et al. 2021

EFS2

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The European Commission requested the EFSA Panel on Plant Health to prepare and deliver risk assessments for commodities listed in Commission Implementing Regulation (EU) 2018/2019 as 'High risk plants, plant products and other objects'. This Scientific Opinion covers the plant health risks posed by 2-year-old grafted bare rooted plants for planting of Juglans regia imported from Turkey, taking into account the available scientific information, including the technical information provided by Turkey. The relevance of any pest for this Opinion was based on evidence following defined criteria. Two EU quarantine pests, Anoplophora chinensis and Lopholeucaspis japonica, and three pests not regulated in the EU, two insects (Garella musculana, Euzophera semifuneralis) and one fungus (Lasiodiplodia pseudotheobromae), fulfilled all relevant criteria and were selected for further evaluation. For these pests, the risk mitigation measures proposed in the technical dossier from Turkey were evaluated by considering the possible limiting factors. For these pests, an expert judgement was given on the likelihood of pest freedom taking into consideration the risk mitigation measures acting on the pests, including uncertainties associated with the assessment. While the estimated degree of pest freedom varied among pests, Lasiodiplodia pseudotheobromae was the pest most frequently expected on the commodity. The expert knowledge elicitation indicated, with 95% certainty, that 9,554 or more grafted bare rooted plants per 10,000 will be free from Lasiodiplodia pseudotheobromae.

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First Report of Lasiodiplodia pseudotheobromae Causing Trunk Cankers in Citrus reticulata in Pakistan

Cited by 7 publications

References 2 publications

Morphology Characterization, Molecular Identification, and Pathogenicity of Fungal Pathogen Causing Kaffir Lime Leaf Blight in Northern Thailand

Morphology Characterization, Molecular Identification, and Pathogenicity of Fungal Pathogen Causing Kaffir Lime Leaf Blight in Northern Thailand

Commodity risk assessment of Prunus persica and P. dulcis plants from Türkiye

Commodity risk assessment of Juglans regia plants from Turkey

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