ArticleJournal of experimental botany2025
Plant hormones regulate inducible asexual reproduction in Kalanchoë pinnata.
Article in Journal of experimental botany, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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Who cites it
2 citing papers in PubMed.
- The Auxin-Induced Protein Gene (MsARG4) Regulates Rapid Stem Elongation and Nutritional Quality Enhancement in Alfalfa.Plants (Basel, Switzerland) · 2026Article
- Leaf as nursery: insights on hormonal control of asexual reproduction from Kalanchoë pinnata.Journal of experimental botany · 2025Article
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Authors and funding
6 authors.
Funding
Abstract
Many Kalanchoë species reproduce asexually by forming plantlets in the leaf margins. Plant hormones are involved in meristem and embryogenesis pathways, yet their exact role in Kalanchoë plantlet formation is unknown. Here, we show that auxin and cytokinin-mediated pathways facilitate the establishment of leaf crenulations and, in turn, plantlet primordia in K. pinnata. Antisense transgenic lines with lower expression of the auxin transporter PIN-FORMED1 (PIN1) and the cytokinin signalling inhibitor ARABIDOPSIS HISTIDINE-CONTAINING PHOSPHOTRANSFER PROTEIN (AHP) generated fewer plantlets. GREEN FLUORESCENT PROTEIN (GFP) reporter lines visualising the activity of auxin and cytokinin also revealed the accumulation of these hormones in the plantlet primordia. Furthermore, treatment of leaves with gibberellic acid (GA3) prevented plantlet emergence, suggesting that its depletion activates plantlet formation in detached leaves. Our findings highlight the involvement of hormonal regulation in the inducible plantlet formation system, which facilitates the formation of plantlet primordia and exerts precise control over dormancy processes in detached leaves. This study provides insight into the role of hormones in the novel reproductive system in the genus Kalanchoë.
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