Interaction between Likubin Bacterium and Phytophthora parasitica in Citrus Hosts
Journal
European Journal of Plant Pathology
Journal Volume
110
Journal Issue
1
Pages
1-6
Date Issued
2004-01
Date
2004-01
Author(s)
Pao-Jen Ann
Wen-Hsiung Ko
Hong-Ji Su
Abstract
Infection with Likubin bacterium (LB) followed by Phytophthora parasitica increased the mortality of sour orange and pummelo seedlings, and enhanced the P. parasitica-induced root rot in all the four types of citrus tested. The LB-induced enhancement of root infection by P. parasitica was apparent within 1h of exposure to zoospore suspension. The enhancement of P. parasitica-induced root rot was affected by the infection sequence. Inoculation of sour orange seedlings with LB before P. parasitica was more effective in increasing P. parasitica-induced root rot than LB and P. parasitica concomitantly or LB after P. parasitica. Grafting P. parasitica susceptible scions of ponkan (Citrus reticulata) onto P. parasitica-tolerant rootstocks of sour orange greatly increased the susceptibility of rootstocks to P. parasitica. Results also demonstrate the enhancement of LB-induced symptoms by P. parasitica in citrus plants.
Subjects
Likubin
greening
Phytophthora parasitica
root rot
disease enhancement
fastidious bacterium
Publisher
Springer
Type
journal article