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Schröder, P.* ; Hsu, B.Y.* ; Gutsche, N.* ; Winkler, J.B. ; Hedtke, B.* ; Grimm, B.* ; Schwechheimer, C.*

B-GATA factors are required to repress high-light stress responses in Marchantia polymorpha and Arabidopsis thaliana.

Plant Cell Environ. 46, 2376-2390 (2023)
DOI PMC
Creative Commons Lizenzvertrag
GATAs are evolutionarily conserved zinc-finger transcription factors from eukaryotes. In plants, GATAs can be subdivided into four classes, A-D, based on their DNA-binding domain, and into further subclasses based on additional protein motifs. B-GATAs with a so-called leucine-leucine-methionine (LLM)-domain can already be found in algae. In angiosperms, the B-GATA family is expanded and can be subdivided in to LLM- or HAN-domain B-GATAs. Both, the LLM- and the HAN-domain are conserved domains of unknown biochemical function. Interestingly, the B-GATA family in the liverwort Marchantia polymorpha and the moss Physcomitrium patens is restricted to one and four family members, respectively. And, in contrast to vascular plants, the bryophyte B-GATAs contain a HAN- as well as an LLM-domain. Here, we characterise mutants of the single B-GATA from Marchantia polymorpha. We reveal that this mutant has defects in thallus growth and in gemma formation. Transcriptomic studies uncover that the B-GATA mutant displays a constitutive high-light (HL) stress response, a phenotype that we then also confirm in mutants of Arabidopsis thaliana LLM-domain B-GATAs, suggesting that the B-GATAs have a protective role towards HL stress.
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Publication type Article: Journal article
Document type Scientific Article
Corresponding Author
Keywords Arabidopsis ; Arabidopsis Thaliana ; Early Light-induced Protein ; Elip ; Gata ; Marchantia ; Marchantia Polymorpha ; Chlorophyll ; High-light Stress ; Photosystem; Transcription Factors; Llm-domain; Chlorophyll Synthesis; Hanaba-taranu; Family; Alignment; Proteins; Mutants; Gene; Photoprotection
ISSN (print) / ISBN 0140-7791
e-ISSN 1365-3040
Journal Plant, Cell and Environment
Quellenangaben Volume: 46, Issue: 8, Pages: 2376-2390 Article Number: , Supplement: ,
Publisher Wiley
Publishing Place Malden, MA
Non-patent literature Publications
Reviewing status Peer reviewed
Institute(s) Research Unit Environmental Simulation (BIOP-EUS)
Grants Deutsche Forschungsgemeinschaf