EPPO Global Database

EPPO Reporting Service no. 05 - 2017 Num. article: 2017/103

Xylella taiwanensis sp. nov. causes pear leaf scorch in Taiwan

In 1993, a bacterium causing pear leaf scorch disease in Taiwan was detected on Asian pear (Pyrus pyrifolia cv. Hengshan) in Houli, and was identified as a strain of Xylella fastidiosa (EPPO RS 1994/049, 1996/204, 2007/187). Further molecular and phylogenetic studies have been conducted and have shown that the bacterial strain isolated from P. pyrifolia in Taiwan is a new and distinct species which has been tentatively called Xylella taiwanensis sp. nov.


Su CC, Deng WL, Jan FJ, Chang CJ, Huang H, Shih HT, Chen J (2016) Xylella taiwanensis sp. nov. cause of pear leaf scorch disease in Taiwan. International Journal of Systematic and Evolutionary Microbiology 66(11), 4766-4771.