Eva-Sophie WALLNER
Postdoc
Group Dolan
https://www.linkedin.com/in/eswallner/
Contact
Email: eva.wallner(at)gmi.oeaw.ac.at
Telephone: +43 1 79044
https://orcid.org/0000-0002-4268-3976
FORMER AND CURRENT POSITIONS
since 2023 - Postdoctoral Fellow in the Dolan Group
2019-2022 - Postdoctoral Fellow at Stanford University, USA, in the group of Dominique Bergmann
2015-2018 - PhD at Heidelberg University, Germany, in the group of Thomas Greb
Academic Honors and Awards
DFG fellowship 2020
Horst Wiehe Prize 2019
Ruprecht-Kars-Prize 2019
Research Projects
De novo meristem formation: how to grow a plant from a single spore:
Multicellular adult plant bodies develop from stem cells located in meristems. However, we know little about how meristems are formed. Liverworts, such as Marchantia polymorpha, grow bodies from unicellular spores that develop in isolation from the mother plant, which allows all stages of their early development to be observed. I discovered that the spore undergoes a series of precisely oriented divisions that lead to timely formation of organized cellular structures. These first sporeling structures define the body axes, set up dorsoventrality of the flat Marchantia body and position the first meristem.
Research interests
How to grow flat photosyntetic structures:
Tissue patterning and cell division orientations are pivotal for plant morphology. I want to understand how determinate Arabidopsis leaves and indeterminate flat Marchantia thalli are patterned to acquire and maintain a flat and expanded configuration that allows for efficient light harvesting and gas exchange. In the Dolan lab I investigate how the first meristem and body axes develop de novo from a single-celled Marchantia polymorpha spore into the first flat and photosynthetic prothallus structure.
More Publications
2020-2024
- Wallner ES, Dolan L (2024) Reproducibly oriented cell divisions pattern the first flat body structures to set up dorsoventrality and de novo meristem formation in Marchantia polymorpha. BioRxiv, doi: 10.1101/2024.07.08.602509
- Wallner ES, Mair A, Handler D, McWhite C, Xu SL, Dolan L, Bergmann DC (2024) Spatially resolved proteomics of the stomatal lineage: polarity complexes for cell divisions and stomatal pores. Developmental Cell, doi:10.1016/j.devcel.2024.03.001
- Li Q, Yu H, Chang W, Chang S, Guzman M, Faure L, Wallner ES, Yan H, Greb T, Wang L, Yao R, Neldon D.C (2024) SMXL5 attenuates strigolactone signaling in Arabidopsis thaliana by inhibiting SMXL7 degradation. Molecular Plant, doi:10.1016/j.molp.2024.03.006
- Wallner ES, Dolan L, Bergmann DC (2023) Arabidopsis stomatal lineage cells establish bipolarity and segregate differential signaling capacity to regulate stem cell potential. Developmental Cell, doi:10.1016/j.devcel.2023.07.024
- Wallner ES, Tonn N, Shi D, Luzzietti L, Wanke F, Hunziker P, Xu Y, Jung I, López-Salmerón V, Gebert M, Wenzl C, Lohmann JU, Harter K, Greb T (2023) OBERON3 and SUPPRESSOR OF MAX2 1-LIKE proteins form a regulatory module driving phloem development. Nature Communicatioons, doi:10.1038/s41467-023-37790-5
- Gong Y, Varnau R, Wallner ES, Acharya R, Bergmann DC, Cheung LS (2020); Quantitative and dynamic cell polarity tracking in plant cells. New Phytologist, doi:10.1111/nph.17165
- Wallner ES (2020); The value of asymmetry: how polarity proteins determine plant growth and morphology. The Journal of Experimental Botany, doi:10.1093/jxb/eraa329
- Wallner ES, Tonn N, Shi D, Jouannet V, Greb T (2020); SUPPRESSOR OF MAX2 1-LIKE 5 promotes secondary phloem formation during radial stem growth. The Plant Journal, doi:10.1111/tpj.1467
2016-2020
- Miyashima S, Roszak P, Sevilem I, Toyokura K, Blob B, Heo JO, Mellor N, Help-Rinta-Rahko H, Otero S, Smet W, Boekschoten M, Hooiveld G, Hashimoto K, Smetana O, Siligato R, Wallner ES, Mähönen AP, Kondo Y, Melnyk CW, Greb T, Nakajima K, Sozzani R, Bishopp A, De Rybel B, Helariutta Y (2019); Mobile PEAR transcription factors integrate positional cues to prime cambial growth. Nature, doi:10.1038/s41586-018-0839-y
- Brackmann K, Qi J, Gebert M, Jouannet V, Schlamp T, Grünwald K, Wallner ES, Novikova DD, Levitsky VG, Agustí J, Sanchez P, Lohmann JU, Greb T (2018); Spatial specificity of auxin responses coordinates wood formation. Nat Commun, doi:10.1038/s41467-018-03256-2
- Cho H., Cho HS., Nam H., Jo H., Yoon J., Park C., Dang TVT., Kim E., Jeong J., Park S., Wallner ES., Youn H., Park J., Jeon J., Ryu H., Greb T., Choi K., Lee Y., Jang SK., Ban C., Hwang I (2018); Translational control of phloem development by RNA G-quadruplex–JULGI determines plant sink strength. Nature Plants, doi:10.1038/s41477-018-0157-2
- Wallner ES, López-Salmerón V, Belevich I, Poschet G, Jung I, Grünwald K, Sevilem I, Jokitalo E, Hell R, Helariutta Y, Agustí J, Lebovka I, Greb T (2017); Strigolactone- and Karrikin-Independent SMXL Proteins Are Central Regulators of Phloem Formation. Curr Biol, doi:10.1016/j.cub.2017.03.014
- Wallner ES, López-Salmerón V, Greb T (2016); Strigolactone versus gibberellin signaling: reemerging concepts? Planta, doi:10.1007/s00425-016-2478-6
