Role of stress‐related hormones in plant defence during early infection of the cyst nematode Heterodera schachtii in Arabidopsis

• DOI: 10.1111/nph.13395
• Publication Date: 2015-03-30T22:14:13Z
• Authors: Nina Kammerhofer; Zoran Radakovic; Jully M. A. Regis; Petre Dobrev; Radomira Vankova; Florian M. W. Gru...; Shahid Siddique; Julia Hofmann; Krzysztof Wieczorek
• Keywords: Heterodera schachtii; Heterodera

Heterodera schachtii, a plant-parasitic cyst nematode, invades host roots and induces specific syncytial feeding structure, from which it withdraws all required nutrients, causing severe yield losses. The system H. schachtii-Arabidopsis is an excellent research model for investigating plant defence mechanisms. Such responses are suppressed in well-established syncytia, whereas they induced during early parasitism. However, the mechanisms by modulated role of phytohormones largely unknown. aim this study was to elucidate hormone-based at onset nematode infection. First, concentrations main were quantified expression several hormone-related genes analysed using quantitative real-time (qRT)-PCR or GeneChip. Further, effects individual hormones evaluated via attraction infection assays plants with altered endogenous hormone concentrations. Our results suggest pivotal positive ethylene attraction, jasmonic acid triggers against schachtii. Salicylic seems be negative regulator later syncytium female development. We conclude that nematodes able impose changes pools, thus modulating signal transduction strict dependence on their parasitism stage.