New Anastomosis Group F (AG-F) of binucleate Rhizoctonia causing root and stem rot of Pistacia vera

Alaei, Hossein; Molaei, Saeed; Mahmoodi, Seyed Bagher; Riseh, Roohallah Saberi

doi:10.18869/modares.jcp.6.1.1

Cited by 6 publications

(11 citation statements)

References 34 publications

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“…encontrados en esta investigación pertenecen al grupo AG-F, lo que coincide con trabajos previos sobre pudrición radicular en sandía realizados en Arizona, EUA (Nischwitz et al, 2013) e Italia (Aiello et al, 2012). Ceratobasidium AG-F también es el agente causal de pudrición radicular en fresa (Sharon et al, 2007), Tagetes erecta (Saroj et al, 2013) y pistache (Alaei et al, 2017).…”

Section: Revista Mexicana De Fitopatología Mexican Journal Of Phytopaunclassified

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Análisis filogenético multilocus del complejo fúngico asociado a pudrición radicular de sandía en Sonora, México

Rentería-Martínez

Guerra-Camacho

Ochoa‐Meza

et al. 2018

RMF

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Resumen. El estado de Sonora es uno de los principales productores de sandía en México. Cada año, los productores locales enfrentan problemas fitosanitarios, provocados principalmente por hongos del suelo. En el presente estudio se analizó la presencia de hongos patógenos asociados con pudrición de raíz en plantas de sandía en las dos zonas de mayor producción en Sonora. Abstract. The state of Sonora is one of the main producers of watermelons in Mexico. Each year, agricultural producers deal with phytosanitary issues like soilborne pathogens. In this study the presence of phytopathogenic fungi associated to watermelon root rot was analyzed in the main production regions of Sonora. Morphological analysis revealed three genera: Fusarium (73%), Ceratobasidium (20%) and Rhizoctonia (6%). Through a multilocus phylogenetic analysis (ITS1, TEF and RPB2 for Fusarium; ITS1 and RPB2 for Rhizoctonia and Ceratobasidium), the following species were identified: Fusarium falciforme, F. brachygibbosum and F. oxysporum. In addition to this, two anastomosic groups for Ceratobasidium sp. (AG-F y AG-A) and two for Rhizoctonia spp.(AG-4 y AG-6) were identified. Pathogenicity assays showed that the representative isolates from these five different species caused root rot wounds and wilting in watermelon plantlets 21 234Fully Bilingual

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Section: Revista Mexicana De Fitopatología Mexican Journal Of Phytopaunclassified

“…Los aislados de menor frecuencia fueron los pertenecientes al género Rhizoctonia, que por la alta variabilidad en su distribución geográfi-ca, morfología, especificidad de hospederas, y 2013) and pistachio (Alaei et al, 2017).…”

Section: Revista Mexicana De Fitopatología Mexican Journal Of Phytopaunclassified

Análisis filogenético multilocus del complejo fúngico asociado a pudrición radicular de sandía en Sonora, México

Rentería-Martínez

Guerra-Camacho

Ochoa‐Meza

et al. 2018

RMF

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“…Alalei et al. () determined that BN Rhizoctonia AG‐F isolates caused stem and root rot only on six‐month‐old pistachio seedlings with severe damage on roots but not on one‐year‐old pistachio seedlings. All R .…”

Section: Discussionmentioning

confidence: 99%

“…AG-P and AG-R isolates have been reported to cause wirestem symptoms on red birch seedlings in China (Yang et al, 2006), and web blight symptoms on azalae seedlings in USA (Rinehart, Copes, Toda, & Cubeta, 2007). Alalei et al (2017) isolated and characterized AG-F from pistachio in Iran. Aiello et al (2017) found that most of AG-R, AG-A and AG-G and AG-V isolates as well as all isolates of R. solani AG 4 HG-I were pathogenic to different ornamental nurseries in Italy, but those of BN Rhizoctonia AG-Fb and R. solani AG 2 2-IIIB did not.…”

Section: Virulence Of Rhizoctonia Isolatesmentioning

confidence: 99%

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Characterization and pathogenicity ofRhizoctoniaspp. isolated from kiwifruit in the Middle and Eastern Black Sea region of Turkey

Türkkan

Erper

Kılıçoğlu

et al. 2018

Journal of Phytopathology

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In this study, 58 Rhizoctonia isolates were obtained from plants exhibiting symptoms of root and stem rot in kiwifruit orchards in six different provinces in the Black Sea region of Turkey. The isolates were analysed for their cultural characteristics, anastomosis groups (AGs) and subgroups according to nucleotide sequence variations in the internal transcribed spacer (ITS) regions including the 5.8S gene of nuclear ribosomal DNA (rDNA) and pathogenicity. Based on ITS1‐5.8S‐ITS2 rDNA sequencing, 52 binucleate (BN) Rhizoctonia isolates were identified as belonging to AG‐O (17), AG‐L (1), AG‐G (7), AG‐I (1), AG‐A (9), AG‐Fa (9), AG‐Fb (1), AG‐R (3) and AG‐P (4). Of the remaining 6 isolates, three belonged to multinucleate (MN) R. solani AG 4 HG‐I, one belonged to AG 4 HG‐II, one belonged to AG 5 and one belonged to AG 1‐IB. The sequences of these isolates were aligned and compared with other Rhizoctonia sequences retrieved from GenBank (NCBI), and phylogenetic analysis was used to determine evolutionary relationships among them. All isolates used in the temperature experiments grew between 15–35°C, and their growth was completely inhibited at 5 and 40°C, with a few exceptions. In the pathogenicity tests carried out using 58.6% of the isolates on kiwifruit seedlings, it was determined that there were statistically significant virulence differences among BN and MN Rhizoctonia isolates (p < 0.05). The virulence of BN Rhizoctonia ranged from 0.2 to 4.0, whereas that of MN varied from 2.4 to 4.0. Unlike some isolates of AG‐R, AG 4 HG‐II and AG 1‐IB, which had no significant difference between them in virulence, AG‐P and AG 4 HG‐I isolates significantly reduced plant height, shoot and root dry weights and root length when compared to control plants. To our knowledge, it is the first detailed report of AGs of BN and MN Rhizoctonia, the causal agent of root and stem rot on kiwifruit in Turkey and in the world.

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Fusarium

2021

CABI Compendium

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New Anastomosis Group F (AG-F) of binucleate Rhizoctonia causing root and stem rot of Pistacia vera

Cited by 6 publications

References 34 publications

Análisis filogenético multilocus del complejo fúngico asociado a pudrición radicular de sandía en Sonora, México

Análisis filogenético multilocus del complejo fúngico asociado a pudrición radicular de sandía en Sonora, México

Characterization and pathogenicity ofRhizoctoniaspp. isolated from kiwifruit in the Middle and Eastern Black Sea region of Turkey

Fusarium

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