Phytophthora Species Causing Root and Collar Rot of Pomegranate in Turkey

Kurbetli, İlker; Karaca, Gürsel; Aydoğdu, Mehmet; Sülü, Görkem

doi:10.1007/s10658-020-02007-8

Cited by 14 publications

(13 citation statements)

References 21 publications

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“…niederhauserii infection. This effect was already described by Rodríguez-Padrón et al [42] and Kurbetli et al [45], when these authors inoculated Ph. niederhauserii to avocado and pomegranate, respectively.…”

Section: Discussionsupporting

confidence: 77%

Survey of Oomycetes Associated with Root and Crown Rot of Almond in Spain and Pathogenicity of Phytophthora niederhauserii and Phytopythium vexans to ‘Garnem’ Rootstock

et al. 2022

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From 2018 to 2020, surveys of oomycetes associated with root and crown rot of almond (Prunus dulcis) were conducted on diseased young almond trees in commercial orchards and nurseries in six provinces of Spain. A total of 104 oomycete isolates were obtained from plant and soil samples, which h were identified by sequencing the internal transcribed spacer (ITS) region of the ribosomal DNA. Diverse species belonging to the genera Globisporangium, Phytophthora, Phytopythium and Pythium were found, Phytopythium vexans and Phytophthora niederhauserii being the most frequent. The pathogenicity of these two species to one-year-old almond seedlings of ‘Garnem’ (P. dulcis × P. persica) rootstock was studied. All seedlings inoculated with Pp. vexans and Ph. niederhauserii isolates showed severe symptoms at the late stage of the pathogenicity test (defoliation, wilting and dieback) and several plants died. Some isolates of Ph. niederhauserii significantly reduced the dry weight of the roots compared with the control, but this effect was not observed in seedlings inoculated with Pp. vexans. These results provide new information about the oomycete species present in almond crops in Spain and highlight the importance of carrying out frequent phytosanitary surveys for a better knowledge of potential risks posed by these soil-borne pathogens.

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Section: Discussionsupporting

confidence: 77%

Survey of Oomycetes Associated with Root and Crown Rot of Almond in Spain and Pathogenicity of Phytophthora niederhauserii and Phytopythium vexans to ‘Garnem’ Rootstock

et al. 2022

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“…A search of ITS sequences in the National Center for Biotechnology Information (NCBI) database and previous publications revealed that isolates with sequences identical to P. heterospora have been recorded from almost all continents and different hosts. The crown and root rot of pomegranate reported in young plantations in Italy and Turkey appear to be most likely caused by P. heterospora [ 58 , 59 ]. The lower maximum temperature (<35 °C) for mycelium growth of Turkish isolates and their phylogenetic position indicate that they did not belong to P. palmivora [ 59 ].…”

Section: Discussionmentioning

confidence: 99%

“…The crown and root rot of pomegranate reported in young plantations in Italy and Turkey appear to be most likely caused by P. heterospora [ 58 , 59 ]. The lower maximum temperature (<35 °C) for mycelium growth of Turkish isolates and their phylogenetic position indicate that they did not belong to P. palmivora [ 59 ]. Similarly, the dieback and mortality of young olive trees in a nursery and in plantations in Souk El Arbaa (Morocco) attributed to P. palmivora [ 60 ] were presumably also caused by P. heterospora , as demonstrated by the occurrence of subglobose and non-papillate sporangia, which resemble pseudoconidia.…”

Section: Discussionmentioning

confidence: 99%

Phytophthora heterospora sp. nov., a New Pseudoconidia-Producing Sister Species of P. palmivora

Scanu

Jung

Masigol

et al. 2021

JoF

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Since 1999, an unusual Phytophthora species has repeatedly been found associated with stem lesions and root and collar rot on young olive trees in Southern Italy. In all cases, this species was obtained from recently established commercial plantations or from nursery plants. Morphologically, the Phytophthora isolates were characterized by the abundant production of caducous non-papillate conidia-like sporangia (pseudoconidia) and caducous papillate sporangia with a short pedicel, resembling P. palmivora var. heterocystica. Additional isolates with similar features were obtained from nursery plants of Ziziphus spina-christi in Iran, Juniperus oxycedrus and Capparis spinosa in Italy, and mature trees in commercial farms of Durio zibethinus in Vietnam. In this study, morphology, breeding system and growth characteristics of these Phytophthora isolates with peculiar features were examined, and combined mitochondrial and nuclear multigene phylogenetic analyses were performed. The proportion between pseudoconidia and sporangia varied amongst isolates and depended on the availability of free water. Oogonia with amphigynous antheridia and aplerotic oospores were produced in dual cultures with an A2 mating type strain of P. palmivora, indicating all isolates were A1 mating type. Phylogenetically, these isolates grouped in a distinct well-supported clade sister to P. palmivora; thus, they constitute a separate taxon. The new species, described here as Phytophthora heterospora sp. nov., proved to be highly pathogenic to both olive and durian plants in stem inoculation tests.

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“…Phytophthora pertenece al reino chromista orden peronosporales (Rays y Brett, 2012;Sharma et al, 2021). Las especies de Phytophthora devastan ecosistemas nativos, bosques, plantas ornamentales y cultivos agrícolas intensivos (Kurbetli et al, 2020a). Es considerado uno de los fitopatógenos de suelo con mayor grado de afectación en la fruticultura, por los impactos que ha causado a las unidades de producción comercial, con pérdidas de 45 a 90% (Ramírez, 2018;Sánchez et al, 2019).…”

Section: Introductionunclassified

Phytophthora cinnamomi Rands en aguacate

Amador

Cibrián-Llanderal

Rojas³

et al. 2022

Remexca

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El objetivo de la presente revisión es dar a conocer el estatus epidemiológico de Phytophthora cinnamomi Rands en interacción con Persea americana Mill. y las alternativas de manejo fitosanitario autorizadas. El ensayo se realizó con base en reportes de instancias oficiales y científicas en materia de sanidad vegetal, de brotes epidemiológicos de la enfermedad tristeza del aguacate causada por P. cinnamomi. A nivel mundial, la pérdida de árboles de aguacate fue exponencial, debido a la enfermedad causada por el oomiceto P. cinnamomi quien presentó comportamiento epidemiológico a nivel nacional e internacional. En 1942, en Puerto Rico el patógeno fue aislado por primera vez por Tucker en plantas de aguacate. En México, el primer brote epidemiológico por este patógeno fue en 1952, con pérdidas de 90% de la producción de aguacate, la distribución de la enfermedad se expandió a diferentes partes del mundo. En condiciones favorables afecta la raíz y base de la corona, invade haces vasculares y toma los nutrientes para su desarrollo. La patogénesis es influenciada por la temperatura, precipitación, humedad, pH, disponibilidad de nutrientes y textura del suelo. En campo, la efectividad biológica de las moléculas, para el control del oomiceto, puede presentar limitantes que impactan en la microbiota, flora y fauna; además, de los efectos que se reflejan en la calidad e inocuidad de frutos por la acumulación de moléculas de plaguicidas sintéticos. Dada la situación fitosanitaria que expresa la producción de aguacate es necesario implementar alternativas de manejo sustentable, como la endoterapia, a través de la inyección de productos selectivos en dosis específicas, que controlen a la enfermedad sin afectar la calidad e inocuidad del fruto.

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Phytophthora Species Causing Root and Collar Rot of Pomegranate in Turkey

Cited by 14 publications

References 21 publications

Survey of Oomycetes Associated with Root and Crown Rot of Almond in Spain and Pathogenicity of Phytophthora niederhauserii and Phytopythium vexans to ‘Garnem’ Rootstock

Survey of Oomycetes Associated with Root and Crown Rot of Almond in Spain and Pathogenicity of Phytophthora niederhauserii and Phytopythium vexans to ‘Garnem’ Rootstock

Phytophthora heterospora sp. nov., a New Pseudoconidia-Producing Sister Species of P. palmivora

Phytophthora cinnamomi Rands en aguacate

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