Department of Plant Pathology, Patuakhali Science and Technology University, Dumki, Patuakhali, Bangladesh
Received date: November 29, 2016; Accepted date: November 30, 2016; Published date: November 30, 2016
Citation: Pervez Z, Alam MS, Islam MS (2016) First Report of Bacterial Soft Rot of Aloe vera (Aloe barbadensis) Caused by Pectobacterium chrysanthemi in Bangladesh. J Plant Pathol Microbiol 7: 1000e110. doi:10.4172/2157-7471.1000e110
Copyright: © 2016 Pervez Z, et al. This is an open-access article distributed under the terms of the creative commons attribution license, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
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Bacterial soft rot of Aloe vera caused by Pectobacterium chrysanthemi was observed for the first time in June, 2016 at the field of Germplasm Centre of Patuakhali Science and Technology University, Bangladesh. This disease was first reported from the Caribbean island of Aruba  and Korea . However, this is the first report of the disease from Bangladesh. In India this disease was observed for the first time in 2000, at the National Research Centre for Medicinal and Aromatic Plants, India.
A new serious outbreak of the disease was observed during the rainy season in 2016 on two-year-old plants of Aloe vera at the Germplasm Centre of Patuakhali Science and Technology University, Bangladesh. Initial symptom of the disease started as water soaked lesions at the base of the leaves. The rotting progressed very fast and the whole plant died within four to five days. As rotting spreads through the insides of the plant, the leaves turn mushy and collapse. An identifying symptom developed as the rotting progressed, the leaf epidermis bulged out due to gas formation and the leaf content was converted to a slimy mass (Figure 1).
Pathogenicity assays were performed on healthy Aloe vera plants grown in pots. Suspensions (108 cfu/ml) of a single isolate of Pectobacterium chrysanthemi were injected into the base of the plant leaf using a hypodermic needle. After six days, the rotting and bulged out symptoms (Figure 2) were appeared in inoculated pot plants as symptoms found in field plants. This is the first report of bacterial soft rot by Pectobacterium chrysanthemi in Bangladesh .