Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

First report of Lasiodiplodia theobromae causing bot gummosis in Citrus limon in Chile.

Abstract

In June 2016, C. limon trees located in the Pica oasis, Tarapacá Region (Chile), were observed showing trunk canker, branch dieback, vascular streaks, and gummy orange-brown exudation. Samples from affected trees (n = 3) of one orchard were taken and were sent to the Plant Pathology Lab for analysis. Based on morphological characteristics, molecular data (sequence analysis of the the ITS1-5.8S-ITS2 and part of the β-tubulin and the elongation factor 1α genes) and a pathogenicity test, the causal agent was identified as L. theobromae. This is thought to be the first report of L. theobromae causing bot gummosis of C. limon in Chile and worldwide.