Disease outbreaks attributed to leaf scald of sugarcane caused by Xanthomonas albilineans were recently reported in southern Mexico. In this study, the distribution of leaf scald was investigated in the main sugarcane producing-states in Mexico. The disease was found in eight of 14 sugarcane-growing states and in 12 of 31 fields. In contaminated fields, incidence of leaf scald based on symptomatic plants ranged from 3 to 15%. The causal agent was identified by phylogenetic reconstruction using a single concatenated sequence of four genes (16S rRNA, fusA, leuS, and rpiA). Twelve X. albilineans isolates from different locations in Mexico produced disease symptoms after inoculation into stalks of susceptible variety Mex 69–290. Microscopic examination of infected stalks revealed structural changes within vascular and non-vascular tissues. These alterations reflected acute disease development and highlighted the importance of selecting varieties resistant to X. albilineans in breeding programs in Mexico.

最近在墨西哥南部报告了由白线黄单胞菌引起的甘蔗叶烫伤引起的疾病爆发。在这项研究中，调查了墨西哥主要甘蔗生产州的叶烫伤分布。在 14 个甘蔗种植州中的 8 个州和 31 个农田中的 12 个州发现了这种疾病。在受污染的田地中，基于有症状植物的烫伤发生率为 3% 至 15%。使用四个基因（16S rRNA、fus A、leu S 和rpi A）的单个串联序列，通过系统发育重建确定了致病因子。十二个X. albilineans来自墨西哥不同地点的分离株在接种到易感品种 Mex 69-290 的茎上后产生了疾病症状。受感染茎的显微镜检查揭示了血管和非血管组织内的结构变化。这些改变反映了急性疾病的发展，并强调了在墨西哥的育种计划中选择抗白斑线虫品种的重要性。