First report of Erwinia psidii associated with papaya dieback disease in Malaysia

Chai, Wan Ting and Jualang Azlan Gansau, and Markus Atong, and Jugah Kadir, and Evenni Poili, and Chong, Khim Phin (2017) First report of Erwinia psidii associated with papaya dieback disease in Malaysia. Malaysian Journal of Microbiology, 13 (1). pp. 20-25. ISSN 2231-7538

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Abstract

Aims: The outbreak of papaya dieback disease in Malaysia has been reported since 2003. Several reports previously confirmed Erwinia papayae and E. mallotivora to be the causal pathogen of the disease. The present study aimed to identify the causal pathogen of papaya dieback disease in Sabah. Methodology and results: Infected tissues of papaya dieback disease were collected from Kota Belud, Sabah and the bacterium responsible for the infection was isolated on Luria Bertani (LB) agar and nutrient agar (NA). Seven isolates with similar characteristics to Erwinia were isolated, subjected to the Koch’s Postulates test and then identified using 16S rRNA sequencing technique. The bacterium was identified to be E. psidii, a common pathogen to guava but not to papaya. Conclusion, Significance and Impact of study: This report serves as the first confirmation of the E. psidii in causing papaya dieback disease, suggesting the possibility of this bacterium undergoing host shifting to papaya plants and the possibility of becoming another major threat to the papaya industry in the future.

Item Type: Article
Uncontrolled Keywords: Papaya dieback disease, Koch’s Postulates, Erwinia psidii, Sabah, 16S rRNA
Subjects: Q Science > QR Microbiology
Divisions: FACULTY > Faculty of Sustainable Agriculture
Depositing User: Munira
Date Deposited: 19 Apr 2018 03:33
Last Modified: 19 Apr 2018 03:33
URI: http://eprints.ums.edu.my/id/eprint/19853

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