The role of thionins in rice defence against root pathogens |
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| Authors: | Hongli Ji Godelieve Gheysen Chhana Ullah Ruben Verbeek Chenjing Shang David De Vleesschauwer Monica Höfte Tina Kyndt |
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| Affiliation: | 1. Department of Molecular Biotechnology, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium;2. Institute of Plant Protection, Sichuan Academy of Agricultural Sciences, Chengdu, China;3. Laboratory of Phytopathology, Department of Crop Protection, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium |
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| Abstract: | Thionins are antimicrobial peptides that are involved in plant defence. Here, we present an in‐depth analysis of the role of rice thionin genes in defence responses against two root pathogens: the root‐knot nematode Meloidogyne graminicola and the oomycete Pythium graminicola. The expression of rice thionin genes was observed to be differentially regulated by defence‐related hormones, whereas all analysed genes were consistently down‐regulated in M. graminicola‐induced galls, at least until 7 days post‐inoculation (dpi). Transgenic lines of Oryza sativa cv. Nipponbare overproducing OsTHI7 revealed decreased susceptibility to M. graminicola infection and P. graminicola colonization. Taken together, these results demonstrate the role of rice thionin genes in defence against two of the most damaging root pathogens attacking rice. |
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| Keywords: | defence Meloidogyne graminicola overexpression Pythium graminicola qRT‐PCR rice thionins |
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