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April 1, 2024New Disease ReportsOpen Access

First report of Lasiodiplodia theobromae causing dieback on Theobroma cacao in Colombia

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Authors

CPCarolina Pisco‐OrtizEREleonora RodríguezLDLorena Dávila-Mora

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Overview

Plant pathology investigation identifies Lasiodiplodia theobromae causing dieback in Theobroma cacao, highlighting risks for monoculture plantations.

Key Points

  • Lasiodiplodia theobromae causes shoot dieback and branch cankers across commercial Theobroma cacao genotypes in plantations throughout Arauca, Colombia.
  • Disease incidence reached 75-85% in cacao monocultures compared to 20-35% in agroforestry systems across all tested cultivars including CCN 51 and FEAR 5.
  • Morphological examination of pycnidia combined with multigene sequencing of internal transcribed spacer and beta-tubulin regions confirmed species identity.
  • Pathogenicity tests confirmed virulent infection, suggesting agroforestry systems may mitigate Lasiodiplodia theobromae impact on Colombian cacao crops.

Cite This Study

Pisco‐Ortiz et al. (2024) studied this question.

synapsesocial.com/papers/68e70ef4b6db6435876883achttps://doi.org/10.1002/ndr2.12266
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