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Legen, J.* ; Lenzen, B.* ; Kachariya, N. ; Feltgen, S.* ; Gao, Y.* ; Mergenthal, S.* ; Weber, W.* ; Klotzsch, E.* ; Zoschke, R.* ; Sattler, M. ; Schmitz-Linneweber, C.*

A prion-like domain is required for phase separation and chloroplast RNA processing during cold acclimation in Arabidopsis.

Plant Cell:koae145 (2024)
DOI PMC
Open Access Green as soon as Postprint is submitted to ZB.
Arabidopsis (Arabidopsis thaliana) plants can produce photosynthetic tissue with active chloroplasts at temperatures as low as 4°C, and this process depends on the presence of the nuclear-encoded, chloroplast-localized RNA-binding protein CP29A. In this study, we demonstrate that CP29A undergoes phase separation in vitro and in vivo in a temperature-dependent manner, which is mediated by a prion-like domain (PLD) located between the two RNA recognition motif (RRM) domains of CP29A. The resulting droplets display liquid-like properties and are found near chloroplast nucleoids. The PLD is required to support chloroplast RNA splicing and translation in cold-treated tissue. Together, our findings suggest that plant chloroplast gene expression is compartmentalized by inducible condensation of CP29A at low temperatures, a mechanism that could play a crucial role in plant cold resistance.
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Publication type Article: Journal article
Document type Scientific Article
Corresponding Author
ISSN (print) / ISBN 1040-4651
e-ISSN 1532-298X
Journal The Plant cell
Quellenangaben Volume: , Issue: , Pages: , Article Number: koae145 Supplement: ,
Publisher American Society of Plant Biologists (ASPB)
Non-patent literature Publications
Reviewing status Peer reviewed