Developmental regulation of stolon and rhizome. (February 2021)

• Record Type: Journal Article
• Authors: Guo, Lei; Plunkert, Madison; Luo, Xi; Liu, Zhongchi
• Is Part Of: Current opinion in plant biology. Volume 59(2021)
• Publication Date: 2021-02
• Subjects: Plant molecular biology -- Periodicals; 571.205
• DOI: 10.1016/j.pbi.2020.10.003
• Languages: English
• ISSNs: 1369-5266

Abstract

Highlights: Stolons and rhizomes are specialized stems for vegetative reproduction in many plant species. Stolons and rhizomes enhance survival as well as invasiveness. Diploid wild strawberry, Fragaria vesca, is emerging as a model system to study stolon. In strawberry axillary meristem, GA, DELLA, as well as CO-FT-SOC1 regulate stolon formation. The BLADE-ON-PETIOLE gene regulates leaf sheath-to-blade ratio to help rhizomes grow in soil. Abstract : Stolons and rhizomes are modified stems for vegetative reproduction. While stolons grow above the ground, rhizomes grow beneath the ground. Stolons and rhizomes maintain the genotypes of hybrids and hence are invaluable for agricultural propagation. Diploid strawberry is a model for studying stolon development. At the axillary meristems, gibberellins and MADS box gene SOC1 promote stolon formation, while the DELLA repressor inhibits stolon development. Photoperiod regulates stolon formation through regulating GA biosynthesis or balancing asexual with sexual mode of reproduction in the axillary meristems. In rhizomatous wild rice, the BLADE-ON-PETIOLE gene promotes sheath-to-blade ratio to confer rhizome tip stiffness and support underground growth. Together, this review aims to encourage further investigations into stolon and rhizome to benefit agriculture and environment.