ArticleNature communications2025
An RNA helicase coordinates with iron signal regulators to alleviate chilling stress in Arabidopsis.
Article in Nature communications, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed.
- The transcription factor ANAC017 links mitochondrial retrograde signaling with the ubiquitin-proteasome system to control mitochondrial function in Arabidopsis.Plant communications · 2026Article
- Structural and functional perspectives on DEAD-box RNA helicases in the rubber tree cold stress response.Frontiers in plant science · 2026Review
- Identification of Transcription Factors ofPlants (Basel, Switzerland) · 2025Article
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Authors and funding
9 authors.
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Abstract
Chilling stress is one of the major environmental stresses that restrains plant development and growth. Our previous study showed that a potential iron sensor BTS (BRUTUS) was involved in temperature response in Arabidopsis plants. However, whether plant iron homeostasis is involved in plant response to temperature fluctuation is not known. In this study, we discover that BTS mutant bts-2 is sensitive to chilling stress, and the sensitivity is attributed to the accumulation of iron. The suppressor screening of bts-2 led to the discovery of RH24, a DEAD-box RNA helicase, that fully suppresses bts-2 chilling sensitivity. RH24 is accumulated under low temperatures, where it unwinds the iron regulator ILR3 (IAA-leucine resistant 3) mRNA and increases the ILR3 protein levels. Intriguingly, RH24 sequesters ILR3 in phase-separated condensates to reduce ILR3-mediated iron overload, and BTS or cold treatments further facilitated the condensate formation. Therefore, RH24 and BTS coordinately control ILR3 to reduce iron uptake under chilling stress. Our findings reveal that the RNA helicase RH24 and BTS finetunes ILR3 to maintain plant iron homeostasis in response to temperature fluctuations.
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