Review: How plants repurposed cytokinin signaling for life on land
Plant Science Research WeeklyWhen plants first moved onto land, they encountered challenges that aquatic ancestors never faced, including heat, dehydration, and rapidly changing environmental conditions. This review by Wang et al., explores how cytokinin signaling, a pathway best known for regulating plant growth and development,…
Cytokinin signaling determines rice panicle size
The Plant Cell: In a NutshellChun, Fang, Savelieva, Lomin et al. explore the mechanism by which cytokinin signaling influences the size of rice panicle.
https://doi.org/10.1093/plcell/koad257
By Yan Chun (淳雁), and Xueyong Li (李学勇)
National Key Facility for Crop Gene Resources and Genetic Improvement, Institute…
NLP7-CRF-PIN, the nitrate-cytokinin-auxin crosstalk module, conveys root nitrate signals and regulates shoot growth adaptive responses (PNAS)
Plant Science Research WeeklyNitrate, the prominent form of nitrogen used by most land plants, is a signal regulating plant growth and development. Nitrate sensing by roots not only regulates root development to facilitate nutrient foraging, but also the growth of distant plant organs. Cytokinin is a mobile signal coordinating nitrate…
Cytokinin–CLAVATA cross-talk is an ancient mechanism regulating shoot meristem homeostasis in land plants (PNAS)
Plant Science Research WeeklyThe shoot apical meristem (SAM) maintains a small pool of pluripotent stem cells, which are the source of all above-ground plant tissues. In Arabidopsis thaliana, CLAVATA3 (CLV3), CLAVATA1(CLV1) and RECEPTOR-LIKE PROTEIN KINASE2 (RPK2) repress WUSCHEL (WUS) expression. WUS induces CLV3, forming a local…