What a significant difference between symptoms caused by Ceratobasidium theobromae and Lasiodiplodia theobromae?
Muhammad Junaid

Universitas Hasanuddin

Abstract

Vascular streak dieback disease symptom is clearly defined as symptoms were chlorosis and later necrosis of leaves, mostly those second or third from the stem tips. Abscission of these leaves occurred within 2 or 3 days of the first appearance of symptoms. Swelling of lenticels was distinct on the bark surface. This symptom is undoubtedly caused by Ceratobasidium theobromae. However, most recent articles also explained that the symptom was also associated with another fungal pathogen, Lasiodiplodia theobromae, which has involved and contributed to give a sign of such a VSD disease lesion. This paper will explain a very fundamental difference of environmental-based symptom on cocoa leaves between caused by C. theobromae and L. theobromae. This paper also will review the ways to analyses environmental symptom, detect molecularly method and test pathogenicity previously conducted before we conclude that specific symptomatic lesion of VSD disease is only caused by a single pathogen as C. theobromae.

Keywords: Symptom analysis of VSD disease on cocoa

Topic: Integrated Pest and Disease Management