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Regulation of symbiotic interactions and primitive lichen differentiation by UMP1 MAP kinase in Umbilicaria muhlenbergii

Author

Listed:
  • Yanyan Wang

    (Chinese Academy of Sciences
    Purdue University)

  • Rong Li

    (Chinese Academy of Sciences)

  • Diwen Wang

    (Purdue University)

  • Ben Qian

    (Chinese Academy of Sciences)

  • Zhuyun Bian

    (Purdue University)

  • Jiangchun Wei

    (Chinese Academy of Sciences)

  • Xinli Wei

    (Chinese Academy of Sciences)

  • Jin-Rong Xu

    (Purdue University)

Abstract

Lichens are of great ecological importance but mechanisms regulating lichen symbiosis are not clear. Umbilicaria muhlenbergii is a lichen-forming fungus amenable to molecular manipulations and dimorphic. Here, we established conditions conducive to symbiotic interactions and lichen differentiation and showed the importance of UMP1 MAP kinase in lichen development. In the initial biofilm-like symbiotic complexes, algal cells were interwoven with pseudohyphae covered with extracellular matrix. After longer incubation, fungal-algal complexes further differentiated into primitive lichen thalli with a melanized cortex-like and pseudoparenchyma-like tissues containing photoactive algal cells. Mutants deleted of UMP1 were blocked in pseudohyphal growth and development of biofilm-like complexes and primitive lichens. Invasion of dividing mother cells that contributes to algal layer organization in lichens was not observed in the ump1 mutant. Overall, these results showed regulatory roles of UMP1 in symbiotic interactions and lichen development and suitability of U. muhlenbergii as a model for studying lichen symbiosis.

Suggested Citation

  • Yanyan Wang & Rong Li & Diwen Wang & Ben Qian & Zhuyun Bian & Jiangchun Wei & Xinli Wei & Jin-Rong Xu, 2023. "Regulation of symbiotic interactions and primitive lichen differentiation by UMP1 MAP kinase in Umbilicaria muhlenbergii," Nature Communications, Nature, vol. 14(1), pages 1-13, December.
  • Handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-42675-8
    DOI: 10.1038/s41467-023-42675-8
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    Cited by:

    1. Camille Puginier & Cyril Libourel & Juergen Otte & Pavel Skaloud & Mireille Haon & Sacha Grisel & Malte Petersen & Jean-Guy Berrin & Pierre-Marc Delaux & Francesco Dal Grande & Jean Keller, 2024. "Phylogenomics reveals the evolutionary origins of lichenization in chlorophyte algae," Nature Communications, Nature, vol. 15(1), pages 1-14, December.

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