Phytohormone and Putative Defense Gene Expression Differentiates the Response of 'Hayward' Kiwifruit to Psa and Pfm Infections.

ABSTRACT: Pseudomonas syringae pv. actinidiae (Psa) and Pseudomonas syringae pv. actinidifoliorum (Pfm) are closely related pathovars infecting kiwifruit, but Psa is considered one of the most important global pathogens, whereas Pfm is not. In this study of Actinidia deliciosa 'Hayward' responses to the two pathovars, the objective was to test whether differences in plant defense responses mounted against the two pathovars correlated with the contrasting severity of the symptoms caused by them. Results showed that Psa infections were always more severe than Pfm infections, and were associated with highly localized, differential expression of phytohormones and putative defense gene transcripts in stem tissue closest to the inoculation site. Phytohormone concentratio

SUBMITTER: Wurms KV 

PROVIDER: S-EPMC5543098 | biostudies-literature | 2017

REPOSITORIES: biostudies-literature