Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

First report of Calonectria hongkongensis causing fruit rot of rambutan (Nephelium lappaceum).

Abstract

Fruit rot of rambutan is a pre- and post-harvest disease problem of rambutan orchards. In 2011, fruit rot was observed at USDA-ARS orchards in Mayaguez, Puerto Rico. Based on morphological characteristics, molecular investigations (amplification by PCR, sequencing and comparison using BLASTn of the ITS rDNA, fragments of β-tubulin, histone H3, and elongation factor (EF1-α) genes) and pathogenicity tests (showing symptoms of fruit rot), the causal agent was identified as C. hongkongensis. This is thought to be the first report of C. hongkongensis causing fruit rot of rambutan.