ArticleNature communications2025
The plastid cysteine synthase complex regulates ABA biosynthesis and stomatal closure 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 8 papers.
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Who cites it
8 citing papers in PubMed.
- Sulfite dynamics affect drought tolerance and water status in Arabidopsis and tomato.Journal of experimental botany · 2026Article
- Sulfur metabolism-dependent retrograde signaling for oxidative stress acclimation.Journal of experimental botany · 2026Review
- Sulfur signaling: from molecules to physiological responses.Journal of experimental botany · 2026Article
- Nitric oxide and abscisic acid: two intimate collaborators regulating plant defense against drought.Protoplasma · 2026Review
- The chloroplast cysteine synthase complex in guard cells is critical for stress-induced stomatal closure.Plant physiology · 2026Article
- Novel roles of sulfur metabolism in stress-controlled stomata aperture regulation.The New phytologist · 2026Review
- Beyond light signaling: the broad regulatory spectrum of AFPs in plant growth and development.Frontiers in plant science · 2026Review
- Interaction with CYP20-3 limits OPDA flux into jasmonate biosynthesis in wounded leaves of arabidopsis grown at eCOFrontiers in plant science · 2026Article
Corrections and comments
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Authors and funding
9 authors.
Funding
Abstract
Global warming intensifies drought and high light stress periods, causing severe water loss and decreased crop yield. The phytohormone abscisic acid (ABA) is the dominant signal governing stomatal closure and water loss. Here, we uncover three signaling axes triggered by soil dehydration and high light stress converging on the dynamic assembly of the cysteine-synthase-complex in chloroplasts (pCSC). We show that pCSC assembly triggers ABA biosynthesis and stomatal closure in response to the soil-drying signals, sulfate (axis 1) and CLE25 (axis 2), and the high light-induced oxylipin OPDA (axis 3). Loss of the pCSC increases sensitivity to soil-drying and impairs high light-induced stomatal closure. Our findings uncover that the dynamic assembly of the pCSC acts as a sensor hub, integrating local and long-distance stress signals to promote stomatal closure by supplying cysteine for ABA biosynthesis in guard cells. We applied this knowledge to generate a soil-drying resilient plant showing no growth penalty.
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Registered trials
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