Identification of Dickeya zeae as a Causal Agent of Bacterial Soft Rot in Banana in China

• DOI: 10.1094/pdis-07-13-0711-re
• Publication Date: 2013-11-08T18:59:03Z
• Authors: Jingxin Zhang; Huifang Shen; Xiaoming Pu; Birun Lin; John Hu
• Keywords: Musa × paradisiaca; Intergenic region; Gibberella zeae

Bacterial soft rot of banana was first noticed in 2009 Guangzhou city, China. The disease also observed on various cultivars different genotypes several other cities. Symptoms the included leaf wilting, collapse pseudostems, and unusual odor. Five isolated strains that fulfilled Koch's postulates were used for biochemical testing. five most similar to Dickeya dadantii or D. zeae, but much less paradisiaca when using phenotype characteristics. Sequence analysis 16S rDNA, dnaX, gryB, recA a reference strain revealed similarity 99% with sequences rather than paradisiaca. Phylogenic concatenated indicated constituted distinguishable clade zeae involving rice pathogens EC1 ZJU1202 from Guangdong province, pathogen had characteristics distinguished it pathogens. Therefore, determined be zeae. This is report caused by China; however, can infect important crops.