Root Branching (image) Howard Hughes Medical Institute Share Print E-Mail Caption After treatment with auxin, normal plant roots begin branching out to the side. After treatment with synthetic auxin, plants engineered to detect the hormone do the same thing (bumpy root branches shown). Credit N. Uchida et al./Nature Chemical Biology 2018 Usage Restrictions Use with credit. Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.