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Editorial Cuvillier

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From Fungicides to Mycoviruses

Impresion
EUR 49,90

E-Book
EUR 34,90

From Fungicides to Mycoviruses (Volumen 50) (Tienda española)

The Control of Rhizoctonia solani in Sugar Beet

Anika Bartholomäus (Autor)

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Indice, PDF (33 KB)
Lectura de prueba, PDF (380 KB)

ISBN-13 (Impresion) 9783736995697
ISBN-13 (E-Book) 9783736985698
Idioma Inglés
Numero de paginas 196
Laminacion de la cubierta mate
Edicion 1.
Serie Aus dem Institut für Zuckerrübenforschung Göttingen
Volumen 50
Lugar de publicacion Göttingen
Lugar de la disertacion Göttingen
Fecha de publicacion 26.06.2017
Clasificacion simple Tesis doctoral
Area Agricultura
Palabras claves Rhizoctonia solani, Sugar beet, Fungicides, Mycoviruses, Virome, Azoxysti
Descripcion

Rhizoctonia root and crown rot, caused by the soil-borne basidiomycete Rhizoctonia solani, is one of the most important diseases in sugar beet and from increasing economic relevance in many European growing areas. In the EU, no fungicides against Rhizoctonia in sugar beet are registered and existing control approaches cannot completely control the disease. Two fungicides were evaluated for their control efficacy using different sugar beet cultivars with varying levels of resistance. The effect on disease severity, white sugar yield (WSY) and soil-borne inoculum, analyzed by qPCR, was determined in naturally infested fields and inoculated trials. Both fungicides showed an excellent disease control with a similar efficacy, securing WSY and reducing the soil-borne inoculum. As an alternative, mycoviruses, which induce hypovirulence, were analyzed as a further approach in the future. They are highly pathogen specific and might deliver long lasting control, once suitable biocontrol agents for Rhizoctonia have been identified. A method for virome characterization based on randomly transcribed dsRNA extracts analyzed by deep sequencing in the combination with the identification of the RdRp domain as virus marker was developed. The virome analysis revealed that the hypovirulent Rhizoctonia isolate DC17 is infested with 17 different mycoviruses of which some show close relation to known hypovirulence inducing viruses.