Plants as non-mobile organisms constantly integrate varying environmental signals to flexibly adapt their growth and development. Local fluctuations in water and nutrient availability, sudden changes in temperature or other abiotic and biotic stresses can trigger changes in the growth of plant organs. Multiple mutually interconnected hormonal signaling cascades act as essential endogenous translators of these exogenous signals in the adaptive responses of plants. Although the molecular backbones of hormone transduction pathways have been identified, the mechanisms underlying their interactions are largely unknown. Here, using genome wide transcriptome profiling we identify an auxin and cytokinin cross-talk component; SYNERGISTIC ON AUXIN AND CYTOKININ 1 (SYAC1), whose expression in roots is strictly dependent on both of these hormonal pathways. We show that SYAC1 is a regulator of secretory pathway, whose enhanced activity interferes with deposition of cell wall components and can fine-tune organ growth and sensitivity to soil pathogens.

• MeSH
• Arabidopsis genetika   růst a vývoj   metabolismus   MeSH
• buněčná stěna chemie   metabolismus   MeSH
• cytokininy metabolismus   MeSH
• endozomy metabolismus   MeSH
• geneticky modifikované rostliny metabolismus   MeSH
• Golgiho aparát metabolismus   MeSH
• kořeny rostlin metabolismus   mikrobiologie   MeSH
• kyseliny indoloctové metabolismus   MeSH
• membránové proteiny genetika   metabolismus   MeSH
• odolnost vůči nemocem genetika   MeSH
• Plasmodiophorida patogenita   MeSH
• proteiny huseníčku genetika   metabolismus   MeSH
• půda MeSH
• regulace genové exprese u rostlin genetika   MeSH
• regulátory růstu rostlin metabolismus   MeSH
• sekreční dráha genetika   MeSH
• stanovení celkové genové exprese MeSH
• transkriptom genetika   MeSH
• vezikulární transportní proteiny metabolismus   MeSH
• Publikační typ
• časopisecké články MeSH
• práce podpořená grantem MeSH