Erwinia mallotivora sp., a New Pathogen of Papaya (Carica papaya) in Peninsular Malaysia

International Journal of Molecular Sciences

Noriha Mat Amin¹  Hamidun Bunawan²  Rohaiza Ahmad Redzuan² 

[1] Biotechnology Research Centre, Malaysian Agricultural Research and Development Institute, P.O Box 12301, General Post Office, 50774 Kuala Lumpur, Malaysia;

关键词: Carica papaya;    Erwinia mallotivora;    papaya dieback;   

DOI  :  10.3390/ijms12010039

来源: mdpi

【 摘 要 】

Erwinia mallotivora was isolated from papaya infected with dieback disease showing the typical symptoms of greasy, water-soaked lesions and spots on leaves. Phylogenetic analysis of 16S rRNA gene sequences showed that the strain belonged to the genus Erwinia and was united in a monophyletic group with E. mallotivora DSM 4565 (AJ233414). Earlier studies had indicated that the causal agent for this disease was E. papayae. However, our current studies, through Koch’s postulate, have confirmed that papaya dieback disease is caused by E. mallotivora. To our knowledge, this is the first new discovery of E. mallotivora as a causal agent of papaya dieback disease in Peninsular Malaysia. Previous reports have suggested that E. mallotivora causes leaf spot in Mallotus japonicus. However, this research confirms it also to be pathogenic to Carica papaya.

【 授权许可】

CC BY   
© 2011 by the authors; licensee Molecular Diversity Preservation International, Basel, Switzerland.