Kim T Melville, Muhammad Kamran, Jiaren Yao, Marianne Costa, Madeleine Holland, Nicolas L Taylor, Georg Fritz, Gavin R Flematti, Mark T Waters
The regulation of behavioral and developmental decisions by small molecules is common to all domains of life. In plants, strigolactones and karrikins are butenolide growth regulators that influence several aspects of plant growth and development, as well as interactions with symbiotic fungi.1 , 2 , 3 DWARF14 (D14) and KARRIKIN INSENSITIVE2 (KAI2) are homologous enzyme-receptors that perceive strigolactones and karrikins, respectively, and that require hydrolase activity to effect signal transduction.4 , 5 , 6 , 7 RsbQ, a homolog of D14 and KAI2 from the gram-positive bacterium Bacillus subtilis, regulates growth responses to nutritional stress via the alternative transcription factor SigmaB (σB )...
December 28, 2023: Current Biology: CB