B-GATA factors are required to repress high-light stress responses in Marchantia polymorpha and Arabidopsis thaliana
Autor(en): | Schroeder, Peter Hsu, Bang-Yu Gutsche, Nora Winkler, Jana Barbro Hedtke, Boris Grimm, Bernhard Schwechheimer, Claus |
Stichwörter: | ALIGNMENT; Arabidopsis; Arabidopsis thaliana; chlorophyll; CHLOROPHYLL SYNTHESIS; EARLY LIGHT-INDUCED PROTEIN; ELIP; FAMILY; GATA; GENE; HANABA-TARANU; high-light stress; LLM-DOMAIN; Marchantia; Marchantia polymorpha; MUTANTS; PHOTOPROTECTION; photosystem; Plant Sciences; PROTEINS; TRANSCRIPTION FACTORS | Erscheinungsdatum: | 2023 | Herausgeber: | WILEY | Journal: | PLANT CELL AND ENVIRONMENT | Volumen: | 46 | Ausgabe: | 8 | Startseite: | 2376 | Seitenende: | 2390 | Zusammenfassung: | 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. |
ISSN: | 0140-7791 | DOI: | 10.1111/pce.14629 |
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geprüft am 02.05.2024