Erratum to: Octaketide Synthase from Polygonum cuspidatum Implements Emodin Biosynthesis in Arabidopsis thaliana. (19th August 2021) - Guo, Yanwu; Nassar, Sara; Ma, Lanqing; Feng, Guanping; Li, Xing; Chen, Mo; Chai, Tuanyao; Abdel-Rahman, Iman A M; Beuerle, Till; Beerhues, Ludger; Wang, Hong; Liu, Benye