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

doi:10.3390/ijms12010039

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Int. J. Mol. Sci. 2011, 12(1), 39-45; doi:10.3390/ijms12010039

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

Noriha Mat Amin * , Hamidun Bunawan, Rohaiza Ahmad Redzuan and Indu Bala S. Jaganath

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

* Author to whom correspondence should be addressed.

Received: 3 November 2010; in revised form: 10 December 2010 / Accepted: 20 December 2010 / Published: 24 December 2010

(This article belongs to the Section Biochemistry, Molecular Biology and Biophysics)

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Abstract: 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.

Keywords: Carica papaya; Erwinia mallotivora; papaya dieback

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MDPI and ACS Style

Mat Amin, N.; Bunawan, H.; Redzuan, R.A.; Jaganath, I.B.S. Erwinia mallotivora sp., a New Pathogen of Papaya (Carica papaya) in Peninsular Malaysia. Int. J. Mol. Sci. 2011, 12, 39-45.

AMA Style

Mat Amin N, Bunawan H, Redzuan RA, Jaganath IBS. Erwinia mallotivora sp., a New Pathogen of Papaya (Carica papaya) in Peninsular Malaysia. International Journal of Molecular Sciences. 2011; 12(1):39-45.

Chicago/Turabian Style

Mat Amin, Noriha; Bunawan, Hamidun; Redzuan, Rohaiza Ahmad; Jaganath, Indu Bala S. 2011. "Erwinia mallotivora sp., a New Pathogen of Papaya (Carica papaya) in Peninsular Malaysia." Int. J. Mol. Sci. 12, no. 1: 39-45.

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