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The presence and spectrum of light influences the in vitro conidia production of Mycosphaerella fijiensis causal agent of black Sigatoka

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Abstract

Black Sigatoka caused by Mycosphaerella fijiensis is the most important leaf disease affecting bananas and plantains in the world today. Conidia constitute one of the forms by which the disease is spread. Although light has been described as an important factor for conidial production in M. fijiensis, no detailed studies have been conducted. In a series of in vitro experiments, the production of conidia in different culture media and with different photoperiods and light spectra was assessed. Results showed that the best media for conidia production were potato dextrose agar and V8 juice agar + 0.2 g/L CaCO3. Light (15001 × ) was required for conidial production and the light spectrum used significantly influenced the number of conidia produced, with red light having the greatest positive effect. kg]Additional keyword kw]photoconidiation.

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Authors and Affiliations

  1. Corporación para Investigaciones Biológicas (CIB), Unidad de Biotecnología Vegetal UNALMED - CIB, Carrera 72 A No. 78 B-141, Medellín, Colombia

    Leonardo Sepúlveda, Luz Estella Vásquez, Clara Inés Paniagua, Dalia Echeverry, Esperanza Rodríguez & Rafael Arango

  2. Instituto de Biología, Facultad de Ciencias Exactas y Naturales, Universidad de Antioquia, Calle 67 No. 53-108, Medellín, Colombia

    Leonardo Sepúlveda & Dalia Echeverry

  3. Escuela de Ciencias Agrarias, Politécnico Colombiano Jaime Isaza Cadavid, Carrera 48 No. 7-151, Medellín, Colombia

    Clara Inés Paniagua & Cesar Augusto Hernández

  4. Escuela de Ciencias Agrarias, Universidad de Antioquia, Carrera 75 No. 65-87, Medellín, Colombia

    Luis Fernando Restrepo

  5. Escuela de Biociencias, Facultad de Ciencias, Universidad Nacional, Carrera 64 Calle 65, Medellín, Colombia

    Rafael Arango

Authors
  1. Leonardo Sepúlveda
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  2. Luz Estella Vásquez
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  3. Clara Inés Paniagua
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  4. Dalia Echeverry
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  5. Cesar Augusto Hernández
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  6. Esperanza Rodríguez
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  7. Luis Fernando Restrepo
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  8. Rafael Arango
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Correspondence to Rafael Arango.

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Sepúlveda, L., Vásquez, L.E., Paniagua, C.I. et al. The presence and spectrum of light influences the in vitro conidia production of Mycosphaerella fijiensis causal agent of black Sigatoka. Australasian Plant Pathology 38, 514–517 (2009). https://doi.org/10.1071/AP09036

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  • DOI: https://doi.org/10.1071/AP09036

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