tasiRNA-ARF Pathway Moderates Floral Architecture in Arabidopsis Plants Subjected to Drought Stress

Figure 5

Proposed model for the fine-tuning of whorl architecture in flowers subjected to environmental stress via tasiRNA-ARF. tasiRNA-ARF is required for normal morphogenesis of floral whorl organs in plants subjected to drought stress. tasiRNA-ARF acts by modulating the expression of floral development-related genes in plants subjected to drought stress. Expression of YUCCA4 is downregulated by drought stress and in the RDR6 mutation, suggesting that auxin biosynthesis is modulated by tasiRNA-ARF.