高等植物下胚轴生长发育研究进展

Advances of Research on Hypocotyl Growth in Higher Plants

下胚轴是指下子叶部为高等植物的胚性器官,它连接植物幼苗根系和子叶,是种子萌发和出苗过程中营养成分和信号分子运输的重要通道。本文通过综述高等植物下胚轴生长发育过程、细胞学机制、影响下胚轴发育的多种因素和分子调节网络等相关的最新研究进展,阐释了作为植物生长发育的第一个关键阶段,下胚轴生长受到光照、温度、激素等多种内外部因素影响,同时受到复杂的基因网络和信号调节。目前下胚轴生长调控机制研究已经取得了很大进展,但对于不同因素构成的调控网络研究较为有限,未来从不同环境因子的交叉调控位点入手,利用分子生物学、遗传学手段,进行多组学研究,有利于深入探索下胚轴生长机制。

Hypocotyls are the vascular plant sex organs in the lower cotyledons,which connect the roots and cotyledons of plant seedlings.They are important pathways for nutrient and signal transport during seed germination and emergence.In this paper,we reviewed the recent advances in the research of hypocotyl development,cytological mechanism,factors affecting hypocotyl development and molecular regulatory networks in vascular plant,as the first key stage of plant growth and development,hypocotyl growth is affected by many internal and external factors,such as light,temperature,hormones,and is also regulated by complex gene networks and signals.At present,great progress has been made in the study of the regulation mechanism of hypocotyl growth,but the research on the regulation network of different factors is limited,using molecular biology and genetics methods to carry out multi-omics research is beneficial to further explore the mechanism of hypocotyl growth.