Plant hormones regulate inducible asexual reproduction in Kalanchoe pinnata.

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 w

SUBMITTER: Jacome-Blasquez F 

PROVIDER: S-EPMC12675274 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature