Molecular Reprogramming and Evolution (MoRE) Laboratory, Centre for Research in Agricultural Genomics (CRAG), CSIC-IRTA-UAB-UB, Campus UAB-Edifci CRAG, Cerdanyola del Vallés, Spain.
Department of Biotechnology and Systems Biology, National Institute of Biology, Ljubljana, Slovenia.
Nat Commun. 2024 Sep 27;15(1):8326. doi: 10.1038/s41467-024-52610-0.
After plants transitioned from water to land around 450 million years ago, they faced novel pathogenic microbes. Their colonization of diverse habitats was driven by anatomical innovations like roots, stomata, and vascular tissue, which became central to plant-microbe interactions. However, the impact of these innovations on plant immunity and pathogen infection strategies remains poorly understood. Here, we explore plant-virus interactions in the bryophyte Marchantia polymorpha to gain insights into the evolution of these relationships. Virome analysis reveals that Marchantia is predominantly associated with RNA viruses. Comparative studies with tobacco mosaic virus (TMV) show that Marchantia shares core defense responses with vascular plants but also exhibits unique features, such as a sustained wound response preventing viral spread. Additionally, general defense responses in Marchantia are equivalent to those restricted to vascular tissues in Nicotiana, suggesting that evolutionary acquisition of developmental innovations results in re-routing of defense responses in vascular plants.
大约 4.5 亿年前，植物从水中过渡到陆地后，开始面临新型的致病微生物。它们对多样化栖息地的殖民化是由根、气孔和维管组织等解剖学创新驱动的，这些创新成为植物-微生物相互作用的核心。然而，这些创新对植物免疫和病原体感染策略的影响仍知之甚少。在这里，我们探索了藓类植物地钱中植物-病毒的相互作用，以深入了解这些关系的进化。病毒组分析表明，地钱主要与 RNA 病毒相关。与烟草花叶病毒（TMV）的比较研究表明，地钱与维管植物共享核心防御反应，但也表现出独特的特征，例如持续的伤口反应阻止病毒传播。此外，地钱中的一般防御反应与局限于烟草原生质体的防御反应相当，这表明发育创新的进化获得导致了维管植物防御反应的重新定向。
