International Journal of Current Microbiology and Applied Sciences (IJCMAS)
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Original Research Articles                      Volume : 8, Issue:5, May, 2019

PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
Publisher : Excellent Publishers
Email : /
Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2018: 95.39
NAAS RATING 2020: 5.38

Int.J.Curr.Microbiol.App.Sci.2019.8(5): 2245-2254

First Report on Cross-Infection of Coffee Leaf Spot Pathogen Myrothecium roridum on Black Pepper
A.P. Ranjini1*, Madhu S. Giri1, S. Daivasikamani1, Santoshreddy Machenahalli1, M. Sudha1 and Rajanaika2
1Central Coffee Research Institute, Coffee Research Station Post – 577117, Chikkamagaluru District, Karnataka, India
2Department of Applied Botany, Kuvempu University, Jnana Sahyadri, Shankaraghatta – 577451, Shivamogga District, Karnataka, India
*Corresponding author

Myrothecium roridum, a fungal plant pathogen is known to infect the leaves and stem of coffee seedlings in the nursery and leaves and berries of the plants in the field. The pathogen has a very wide host base infecting many agricultural and horticulture crops, ornamentals, gymnosperms and weeds. As black pepper is a major intercrop grown in the coffee plantations, the present study was under taken to test the ability of M. roridum to infect black pepper (Piper nigrum L.). Two isolates of M. roridum, isolated both from coffee nursery and field was inoculated on the leaves of pepper vines. The results indicated that the coffee isolates of M. roridum could infect the leaves of the pepper vines. Two days after of inoculation, the pathogen expressed the symptoms on the inoculated leaves of pepper vines similar to that of Myrothecium leaf spot observed on coffee. The sporodochia could be observed on the inoculated pepper leaves on both lower and upper surface 8 days after inoculation and were arranged concentrically on the affected area. The artificial inoculation confirmed the ability of the pathogen M. roridum existing on coffee can infect the pepper vines and cause crop loss. As per our knowledge this is the first report of M. roridum found pathogenic on pepper vines.

Keywords: Black pepper, Coffee, Cross-infection, Leaf spot, Myrothecium

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How to cite this article:

Ranjini, A.P., Madhu S. Giri, S. Daivasikamani, Santoshreddy Machenahalli, M. Sudha and Rajanaika. 2019. First Report on Cross-Infection of Coffee Leaf Spot Pathogen Myrothecium roridum on Black Pepper.Int.J.Curr.Microbiol.App.Sci. 8(5): 2245-2254. doi:
Copyright: This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike license.