Volume 8, Issue 8, Pages 1153-1164 (August 2015) SAUR Proteins as Effectors of Hormonal and Environmental Signals in Plant Growth  Hong Ren, William M. Gray  Molecular Plant  Volume 8, Issue 8, Pages 1153-1164 (August 2015) DOI: 10.1016/j.molp.2015.05.003 Copyright © 2015 The Author Terms and Conditions

Figure 1 The SAUR Domain. Multiple sequence alignment of the SAUR domain of 247 SAUR proteins from Arabidopsis thaliana, Oryza sativa, Populus trichocarpa, and Physcomitrella patens was performed using Clustal Omega. The consensus residue(s) at each position are color coded. Dotted lines indicate the positions of short, nonconserved insertions present in a few SAUR family members that were removed from the alignment. Molecular Plant 2015 8, 1153-1164DOI: (10.1016/j.molp.2015.05.003) Copyright © 2015 The Author Terms and Conditions

Figure 2 SAURs Activate PM H+-ATPases Via Inhibiting PP2C.D Phosphatases to Promote Cell Expansion. (A) Seven-day-old light-grown Arabidopsis seedlings. Seedlings were stained in 10 μg/ml propidium iodide, and hypocotyl epidermal cells were observed under a Nikon A1 spectral confocal microscope. Asterisks (*) indicate the intercellular space of two adjacent epidermal cells. Scale bar represents 100 μm. (B) A model for SAUR-regulated cell expansion. Adapted from Spartz et al. (2014). Molecular Plant 2015 8, 1153-1164DOI: (10.1016/j.molp.2015.05.003) Copyright © 2015 The Author Terms and Conditions

Figure 3 SAURs Integrate Hormonal and Environmental Signals to Regulate Plant Growth and Development. Arrows and blunted lines indicate positive and negative regulation, respectively. Dashed lines indicate either positive or negative regulation. Hormones and environmental factors confer changes in SAUR expression. Particular SAURs then positively or negatively regulate specific cellular, physiological, and developmental processes. The indicated effects of the various hormones and environmental factors on SAUR expression reflect the overall trend. Molecular Plant 2015 8, 1153-1164DOI: (10.1016/j.molp.2015.05.003) Copyright © 2015 The Author Terms and Conditions