A sister protein of the KAR/KL receptor can negatively regulate karrikin signaling in Arabidopsis
Plant Science Research WeeklyKarrikins (KARs) are a class of molecules that are hypothesized to mimic an undiscovered plant hormone KL (KAI2 Ligand). The signaling cascade triggered by KAR/KL is initiated by the α/β-hydrolase, KAI2, and can regulate several traits like germination, stress tolerance, and others. KAI2 is related…
Rhodanobacter enhances drought tolerance through a KAI2-interacting isoflavone
Plant Science Research WeeklyA new paper by Sun et al. demonstrates a pathway through which drought tolerance in Arabidopsis is influenced by soil microbiota. Using transcriptomic and metabolomic analyses, Sun et al. identified a strain of Rhodanobacter that is recruited to the rhizosphere of drought-stressed plants and can help…
KARRIKIN INSENSITIVE2-dependent signaling in the liverwort Marchantia polymorpha
The Plant Cell: In a NutshellMizuno et al. show that genes in the KARRIKIN INSENSITIVE2-dependent signaling pathway are conserved in the liverwort Marchantia polymorpha and control early development of the thallus.
Yohei Mizuno and Junko Kyozuka
Background: Plants hormones play crucial roles in growth and development. Karrikins…