Rhizomes are underground stems serving as storage organs and containing meristematic tissues which are capable of generating shoots and roots. However, the mechanisms controlling rhizome formation and growth are not yet completely understood.
Ma et al. find that cytokinins (CK) and gibberellins (GA) promoted rhizome formation and growth, respectively, through activating genes and proteins in metabolic pathways that supply energy and amino acids to support cell division and expansion during rhizome initiation and elongation in tall fescue (Festuca arundinacea).
Xiqing Ma, Qian Xu, William A. Meyer, Bingru Huang, 2016, ' Hormone regulation of rhizome development in tall fescue ( Festuca arundinacea ) associated with proteomic changes controlling respiratory and amino acid metabolism ', Annals of Botany, vol. 118, no. 3, pp. 481-494 http://dx.doi.org/10.1093/aob/mcw120