The HPE1 RNA‐binding protein modulates chloroplast RNA editing to promote photosynthesis under cold stress in Arabidopsis
Yajun Zeng,
Jie Dong,
Danni Fu
et al.
Abstract:Cold stress has severe negative consequences for plant growth and crop yield. Here, we report that an Arabidopsis thaliana mutant that lacks the HPE1 gene, which encodes an RNA‐binding protein, maintains higher photosynthetic activity under cold stress, together with higher accumulation of thylakoid proteins. We showed that HPE1 interacts with MORF2 and MORF9 and thereby mediates RNA editing in chloroplasts. Loss of HPE1 function increased the editing efficiency at four RNA editing sites, rpoC‐488, ndhB‐149, n… Show more
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