Survey and Isolation of Rice Bacterial Leaf Blight Caused by Xanthomonas oryzae pv. oryzae
M. Fahima Firdouse
Department of Plant Pathology, TNAU, Coimbatore, Tamil Nadu, India.
A. Sudha *
Department of Plant Pathology, TNAU, Coimbatore, Tamil Nadu, India.
I. Johnson
Department of Plant Pathology, TNAU, Coimbatore, Tamil Nadu, India.
R. Anandham
Department of Microbiology, TNAU, Coimbatore, Tamil Nadu, India.
N. Saranya
Department of Plant Molecular Biology and Bioinformatics, TNAU, Coimbatore, Tamil Nadu, India.
A. Selva Amala
Department of Plant Pathology, TNAU, Coimbatore, Tamil Nadu, India.
S. Arunprakash
Department of Plant Pathology, TNAU, Coimbatore, Tamil Nadu, India.
*Author to whom correspondence should be addressed.
Abstract
A survey was conducted at different rice growing regions of Tamil Nadu such as Erode, Tanjore and Coimbatore. Among the areas surveyed the maximum disease incidence was recorded at Tanjore in the rice variety ADT 54 with the percent disease incidence of 50.23%. Initially one bacterial pathogen Xanthomonas oryzae pv.oryzae was isolated in nutrient agar medium from the leaves having characteristic symptom. Totally 10 isolates of Xoo were collected from three different regions of Tamil Nadu. On isolating the pathogen the colonies are found to be well separated with slimy yellow color and mucoid growth.
Keywords: Isolation, Survey, Xanthomonas oryzae pv. oryzae