Submit Manuscript

Asian Journal of Plant Pathology

Year: 2013 | Volume: 7 | Issue: 3 | Page No.: 109-122
Facebook Twitter Digg Reddit Linkedin StumbleUpon E-mail

Article Trend

Total views 128

Authors

Melkamu Tiru

Diriba Muleta

Gezahegn Berecha

Girma Adugna

Keywords

Research Article

Antagonistic Effects of Rhizobacteria Against Coffee Wilt Disease Caused by Gibberella xylarioides

Melkamu Tiru, Diriba Muleta, Gezahegn Berecha and Girma Adugna
This study was designed to evaluate the antagonistic effects of rhizobacterial antagonists against Coffee Wilt Disease (CWD) caused by Gibberella xylarioides under in vitro and in vivo conditions. Arabica coffee is Ethiopia’s main export crop. However, the production and productivity of coffee is being challenged primarily by coffee vascular disease (tracheomycosis).The greenhouse antagonism study was conducted with four antagonistic bacteria of one Bacillus (JU544) and three Pseudomonas spp. (JU941, JU13 and JU23). Out of 81 rhizobacterial antagonists tested on Half Strength King’s B (HSKB) medium against G. xylarioides, 13.6% of them significantly (p<0.0001) reduced the radial mycelial growth of the pathogen. From 11 rhizobacterial isolates tested for their phytobeneficial traits, eight of them produced protease. Nevertheless, five of them produced Hydrogen Cyanide (HCN) and other lytic enzymes. The bio-control agents, time of applications and the interaction of the two were significantly (p<0.0001) reduced the CWD severity and incidence under greenhouse conditions. The CWD control efficiency was significant (p<0.0001) and the highest bio-control efficiency was 72.64% when the coffee seedlings were treated with Bacillus spp. (JU544) seven days before the pathogen. The bacterial antagonists, time of applications and interaction of the two significantly (p<0.001) reduced the progression of CWD incidence. The rhizobacterial antagonists especially Bacillus spp. (JU544) effectively reduced CWD severity and incidence under greenhouse condition and can be further evaluated under field condition to ascertain their future applicability for inoculum development.
PDF Fulltext XML References Citation

How to cite this article

Melkamu Tiru, Diriba Muleta, Gezahegn Berecha and Girma Adugna, 2013. Antagonistic Effects of Rhizobacteria Against Coffee Wilt Disease Caused by Gibberella xylarioides. Asian Journal of Plant Pathology, 7: 109-122.

URL: https://scialert.net/abstract/?doi=ajppaj.2013.109.122

Leave a Comment

Your email address will not be published. Required fields are marked *

Useful Links

Contact Us

Office Number 1128,
Tamani Arts Building,
Business Bay,
Deira, Dubai, UAE

Phone: +971 507 888 742
Email: [email protected]

About Science Alert

Science Alert is a technology platform and service provider for scholarly publishers, helping them to publish and distribute their content online. We provide a range of services, including hosting, design, and digital marketing, as well as analytics and other tools to help publishers understand their audience and optimize their content. Science Alert works with a wide variety of publishers, including academic societies, universities, and commercial publishers.

© Copyright Science Alert. All Rights Reserved