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Article

Comparative Analysis of Transcriptome and sRNAs Expression Patterns in the Brachypodium distachyonMagnaporthe oryzae Pathosystems

1
Institute of Phytopathology, Centre for BioSystems, Land Use and Nutrition, Justus Liebig University (iFZ), 35392 Giessen, Germany
2
Center for Biotechnology (CeBiTec), Bielefeld University, 33615 Bielefeld, Germany
*
Author to whom correspondence should be addressed.
Int. J. Mol. Sci. 2021, 22(2), 650; https://doi.org/10.3390/ijms22020650
Received: 14 December 2020 / Revised: 28 December 2020 / Accepted: 1 January 2021 / Published: 11 January 2021
The hemibiotrophic fungus Magnaporthe oryzae (Mo) is the causative agent of rice blast and can infect aerial and root tissues of a variety of Poaceae, including the model Brachypodium distachyon (Bd). To gain insight in gene regulation processes occurring at early disease stages, we comparatively analyzed fungal and plant mRNA and sRNA expression in leaves and roots. A total of 310 Mo genes were detected consistently and differentially expressed in both leaves and roots. Contrary to Mo, only minor overlaps were observed in plant differentially expressed genes (DEGs), with 233 Bd-DEGs in infected leaves at 2 days post inoculation (DPI), compared to 4978 at 4 DPI, and 138 in infected roots. sRNA sequencing revealed a broad spectrum of Mo-sRNAs that accumulated in infected tissues, including candidates predicted to target Bd mRNAs. Conversely, we identified a subset of potential Bd-sRNAs directed against fungal cell wall components, virulence genes and transcription factors. We also show a requirement of operable RNAi genes from the DICER-like (DCL) and ARGONAUTE (AGO) families for fungal virulence. Overall, our work elucidates the extensive reprogramming of transcriptomes and sRNAs in both plant host (Bd) and fungal pathogen (Mo), further corroborating the critical role played by sRNA species in the establishment of the interaction and its outcome. View Full-Text
Keywords: argonaute; dicer; RNAi; plant disease; small RNA; virulence; gene expression argonaute; dicer; RNAi; plant disease; small RNA; virulence; gene expression
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MDPI and ACS Style

Zanini, S.; Šečić, E.; Busche, T.; Galli, M.; Zheng, Y.; Kalinowski, J.; Kogel, K.-H. Comparative Analysis of Transcriptome and sRNAs Expression Patterns in the Brachypodium distachyonMagnaporthe oryzae Pathosystems. Int. J. Mol. Sci. 2021, 22, 650. https://doi.org/10.3390/ijms22020650

AMA Style

Zanini S, Šečić E, Busche T, Galli M, Zheng Y, Kalinowski J, Kogel K-H. Comparative Analysis of Transcriptome and sRNAs Expression Patterns in the Brachypodium distachyonMagnaporthe oryzae Pathosystems. International Journal of Molecular Sciences. 2021; 22(2):650. https://doi.org/10.3390/ijms22020650

Chicago/Turabian Style

Zanini, Silvia, Ena Šečić, Tobias Busche, Matteo Galli, Ying Zheng, Jörn Kalinowski, and Karl-Heinz Kogel. 2021. "Comparative Analysis of Transcriptome and sRNAs Expression Patterns in the Brachypodium distachyonMagnaporthe oryzae Pathosystems" International Journal of Molecular Sciences 22, no. 2: 650. https://doi.org/10.3390/ijms22020650

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