Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

Peganum harmala is a new plant host of 'Candidatus Phytoplasma aurantifolia'.

Abstract

Espand (Peganum harmala) in Persia has been used in traditional medicine as emmenagogue and abortifacient. In April 2019, espand witches' broom (EWB) disease symptoms were observed in Forg (Fars Province, Iran). The infected plants showed witches' broom, little leaves, flattened stem and twisting the shoots. Based on the results of DNA sequencing and restriction fragment length polymorphism analysis, the causal agent was identified as 'Candidatus Phytoplasma aurantifolia' 16SrII-D subgroup. This is thought to be the first report of the phytoplasma detection in espand in Iran and probably in the world.