This article published in Plant Physiology by the Hydrosensing team in January of 2024, provided a comprehensive review of gibberellin (GA) research.
Gibberellins (GAs) are plant hormones that regulate growth and development. Research has identified key genes involved in GA biosynthesis and signaling, enhancing our understanding of plant growth regulation. Studies have revealed how GAs interact with other hormones and environmental factors to influence processes like seed germination, stem elongation, and flowering. Advancements in GA research have led to agricultural applications, such as developing dwarf crop varieties with improved yield and stress resistance. Ongoing research continues to explore the complex roles of GAs in plant biology, aiming to optimize crop performance and sustainability.
Read the paper: Shani, E., Hedden, P., & Sun, T. P. (2024). Highlights in gibberellin research: a tale of the dwarf and the slender. Plant Physiology, 195(1), 111. https://doi.org/10.1093/plphys/kiae044
Image: GA regulates plant growth and development. Shown are 12-wk-old GA-unresponsive vs -responsive mutants in wheat. All the mutant lines are in cv. Cadenza background. The gain-of-function Rht-D1b and Rht-B1c (DELLA) alleles were introduced into Cadenza from cvs Avalon and Mercia, respectively (Van De Velde et al. 2021). The hypomorphic gid1 and loss-of-function ga3ox2 and rht-1 plants were produced by TILLING after EMS-induced mutagenesis (A.L. Phillips and S.G. Thomas, unpublished data). All plants were untreated (–) or treated (+) twice-weekly with 10 µM GA3. Rht and gid1 mutants are unresponsive to GA treatment, whereas GA completely rescued the GA-biosynthesis mutant ga3ox2. Scale bar = 40 cm.
