First Report of Ocimum gratissimum as a New Host for Pathogenic Fungus Alternaria alternata Causing Leaf Spot Disease in Uttar Pradesh, India
- *Corresponding Author:
- Kumar S
Department of Forest Pathology
Kerala Forest Research Institute
Peechi–680653 Kerala, India
E-mail: [email protected]
Received date: May 23, 2016; Accepted date: June 30, 2016; Published date: July 04, 2016
Citation: Kumar S, Singh R, Chaurasia BM, Kamal (2016) First Report of Ocimum gratissimum as a New Host for Pathogenic Fungus Alternaria alternata Causing Leaf Spot Disease in Uttar Pradesh, India. J Plant Pathol Microbiol 7: 361. doi:10.4172/2157-7471.1000361
Copyright: © 2016 Kumar S, 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.
A new leaf spot disease was observed during the 2014 on Ocimum gratissimum in the BSIP Garden of Uttar Pradesh (India), causing significant damage to the host. The symptoms produced by the associated fungus consisted of necrotic dark brown, circular to sub-circular, up to 5 mm spots on both surfaces of the leaves. A fungus having distinct dictyospores (muriform) similar to those produced by Alternaria spp. was observed. The morphological characteristics of the fungus as well as the pathogenicity on the host confirmed that the pathogenic fungus is Alternaria alternata. To the best of our knowledge, Ocimum gratissimum, is here for the first time reported as a new host for the pathogenic fungus A. alternata causing leaf spot disease in Uttar Pradesh, India.