匍匐茎和根茎的发育调控。

Developmental regulation of stolon and rhizome.

机构信息

Department of Cell Biology and Molecular Genetics, University of Maryland, College Park, MD 20742, USA.

出版信息

Curr Opin Plant Biol. 2021 Feb;59:101970. doi: 10.1016/j.pbi.2020.10.003. Epub 2020 Dec 6.

DOI:10.1016/j.pbi.2020.10.003

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.

摘要

匍匐茎和根状茎是用于营养繁殖的特化茎。匍匐茎在地面以上生长，而根状茎在地面以下生长。匍匐茎和根状茎保持杂种的基因型，因此对农业繁殖非常重要。二倍体草莓是研究匍匐茎发育的模式植物。在腋芽分生组织中，赤霉素和 MADS 框基因 SOC1 促进匍匐茎的形成，而 DELLA 抑制剂则抑制匍匐茎的发育。光周期通过调节 GA 生物合成或在腋芽分生组织中平衡无性和有性繁殖模式来调节匍匐茎的形成。在根茎状野生稻中，BLADE-ON-PETIOLE 基因促进叶鞘到叶片的比例，赋予根茎顶端的硬度，并支持地下生长。总之，本综述旨在鼓励进一步研究匍匐茎和根状茎，以造福农业和环境。