Advances in the etiology of sweet potato (Ipomoea batatas (L.) Lam) yellow curling disease in Argentina

Authors

  • Sofia Solange Flamarique Unidad de Fitopatología y Modelización Agrícola (INTA-CONICET). Instituto de Patología Vegetal (IPAVE). Centro de Investigaciones Agropecuarias (CIAP). Instituto Nacional de Tecnología Agropecuaria (INTA). https://orcid.org/0000-0002-4298-5747
  • Antonella Vilanova Perez Unidad de Fitopatología y Modelización Agrícola (INTA-CONICET). Instituto de Patología Vegetal (IPAVE). Centro de Investigaciones Agropecuarias (CIAP). Instituto Nacional de Tecnología Agropecuaria (INTA) https://orcid.org/0000-0001-7887-9092
  • Andrés Vicente Luque Unidad de Fitopatología y Modelización Agrícola (INTA-CONICET). Instituto de Patología Vegetal (IPAVE). Centro de Investigaciones Agropecuarias (CIAP). Instituto Nacional de Tecnología Agropecuaria (INTA)
  • Patricia Elsa Rodríguez Pardina Unidad de Fitopatología y Modelización Agrícola (INTA-CONICET). Instituto de Patología Vegetal (IPAVE). Centro de Investigaciones Agropecuarias (CIAP). Instituto Nacional de Tecnología Agropecuaria (INTA) https://orcid.org/0000-0002-2601-2814
  • Liliana del Valle Di Feo Unidad de Fitopatología y Modelización Agrícola (INTA-CONICET). Instituto de Patología Vegetal (IPAVE). Centro de Investigaciones Agropecuarias (CIAP). Instituto Nacional de Tecnología Agropecuaria (INTA)

DOI:

https://doi.org/10.48162/rev.39.087

Keywords:

Ipomoea batatas, sweet potato feathery mottle virus, sweet potato virus G, sweet potato leaf curl virus, sweet potato chlorotic stunt virus, Arapey INIA, Koch’s postulates

Abstract

Sweet potato yellow curling (YC), the most severe disease of sweet potato detected in Argentina, causes symptoms and damage to sweet potato crops in all cultivated regions. Since 2010/11, the presence of four viruses has been detected in symptomatic cv. Arapey INIA: two potyviruses non-persistently transmitted by Myzus persicae (sweet potato feathery mottle virus, SPFMV and sweet potato virus G, SPVG); a closterovirus, sweet potato chlorotic stunt virus (SPCSV) and a geminivirus, sweet potato leaf curl virus (SPLCV), both transmitted by Bemisia tabaci in a semi-persistent and persistent manner, respectively. All the plants were collected from fields in Colonia Caroya, Córdoba province, Argentina. The objectives of the present work are to isolate and identify the virus or viruses involved in YC disease of sweet potato, and to elucidate the viral combination that reproduces YC symptoms. The most severe YC symptoms for this genotype in the field were only reproduced by a combination of the four viruses. The symptoms include chlorosis, stunting, mosaic, blistering, leaf curling, chlorotic spots, chlorotic patterns, leaf area reduction and distortion, and upward curling of leaf edges. The presence of each virus was detected by serological (DAS, NCM and TAS-ELISA) and molecular (PCR) tests. It is concluded that the interaction of SPFMV, SPVG, SPCSV and SPLCV is needed for the development of YC symptoms.

Highlights

  • Four viruses involved in yellow curling disease, SPFMV, SPVG, SPCSV and SPLCV were isolated and identified.
  • The first antiserum produced in Argentina allows the fast, safe and efficient diagnosis of SPVG.
  • The interaction of SPFMV, SPVG, SPCSV and SPLCV is needed for the manifestation of yellow curling in Argentina.

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Published

19-12-2022

Issue

Section

Plant protection

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