Phytophthora palmivora establishes tissue-specific intracellular infection structures in the earliest divergent land plant lineage

作者：Philip Carella, Anna Gogleva, Marta Tomaselli, Carolin Alfs, Sebastian Schornack · 发表于：Proceedings of the National Academy of Sciences · 年份：2018 · DOI：10.1073/pnas.1717900115 · 被引用次数：85 · 研究领域：Mycorrhizal Fungi and Plant Interactions、Plant-Microbe Interactions and Immunity、Plant Pathogens and Resistance

Significance Despite the importance of liverworts as the earliest diverging land plant lineage to support fungal symbiosis, it is unknown whether filamentous pathogens can establish intracellular interactions within living cells of these nonvascular plants. Here, we demonstrate that an oomycete pathogen invades Marchantia polymorpha and related liverworts to form intracellular infection structures inside cells of the photosynthetic layer. Plants lacking this tissue layer display enhanced resistance to infection, revealing an architectural susceptibility factor in complex thalloid liverworts. Moreover, we show that dedicated host cellular trafficking proteins are recruited to pathogen interfaces within liverwort cells, supporting the idea that intracellular responses to microbial invasion originated in nonvascular plants.