Leaf blight is a common disease affecting Sansevieria trifasciata in many countries, including Malaysia. In the present study, Fusarium isolates were consistently recovered from the diseased leaves collected from various locations throughout the country. Based on morphology and multigene phylogenetic analysis using mitochondrial small subunit (mtSSU), intergenic spacer region (IGS) and translation elongation factor 1‐α (TEF1‐α) gene sequences, seven Fusarium species were identified, with F. oxysporum being the most prevalent (67.6%) among 34 isolates. Pathogenicity tests resulted in the discovery of pathogenic isolates that belonged to F. oxysporum, F. proliferatum, and F. pseudocircinatum, whereas all isolates of F. brachygibbosum, F. concentricum, F. mangiferae, and F. solani were nonpathogenic. The results suggest that several Fusarium species are accountable for causing disease on S. trifasciata in Malaysia.

中文翻译：

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马来西亚虎尾兰镰刀菌的形态学、系统发育和致病性

叶枯病是影响包括马来西亚在内的许多国家的 Sansevieria trifasciata 的常见病害。在本研究中，从全国各地收集的病叶中始终分离出镰刀菌。基于使用线粒体小亚基 (mtSSU)、基因间隔区 (IGS) 和翻译延伸因子 1-α (TEF1-α) 基因序列的形态学和多基因系统发育分析，鉴定了 7 种镰刀菌，其中尖孢镰刀菌是最普遍的(67.6%) 在 34 个分离株中。致病性测试结果发现了属于尖孢镰刀菌、增殖镰刀菌和假环状镰刀菌的致病分离株，而短臂镰刀菌、同心镰刀菌、芒果镰刀菌和茄病镰刀菌的所有分离物都是非致病性的。