摘要
强大的再生能力是植物在复杂环境下生存的重要手段。植物再生主要分为组织修复(tissue repair)、器官从头发生(de novo organogenesis)以及体细胞胚发生(somatic embryogenesis)三种方式,其中,器官从头发生是指离体或受伤的植物器官上再生出不定根或不定芽的过程,植物扦插生根与组织培养即是通过器官从头发生途径实现的。植物器官从头发生可以分为直接型器官从头发生和间接型器官从头发生,在间接型器官从头发生过程中,愈伤组织的诱导是关键的起始步骤。就细胞发育谱系与组织形态建成方面而言,植物器官从头发生主要可分为细胞分裂、干细胞龛(SCN)形成和器官建成三个阶段。植物器官再生机制研究有助于更好地开发物种潜能,总结不定根与不定芽再生的细胞形态学变化规律可以为进一步探索器官从头发生机制提供参考。
Plant can survive in complex environment due to its remarkable regeneration capacity.Tissue repair,de novo organogenesis and somatic embryogenesis are three types of plant regeneration.De novo organogenesis refers to the formation of adventitious roots or shoots from the regeneration-competent cells in wounded or detached plant organs.Cuttage and tissue culture are the examples of de novo organogenesis for rapid production of new plants.De novo organogenesis can be divided into direct de novo organogenesis and indirect de novo organogenesis and callus formation is an important process in the indirect de novo organogenesis.The cell developmental lineage and tissue morphogenesis of de novo organogenesis include three stages:cell division,the formation of stem cell niche(SCN)and organ formation.This paper summarizes the morphological changes of regenerative adventitious root and adventitious bud in order to provide reference for further exploration of the mechanism of de novo organogenesis.
作者
孙振美
张倩茹
张倩倩
侯思佳
邬荣领
郭允倩
SUN Zhenmei;ZHANG Qianru;ZHANG Qianqian;HOU Sijia;WU Rongling;GUO Yunqian(Center for Computational Biology,College of Biological Sciences and Technology,Beijing Forestry University,Beijing 100083,China)
出处
《植物生理学报》
CAS
CSCD
北大核心
2020年第8期1729-1736,共8页
Plant Physiology Journal
基金
国家自然科学基金(31370669)
林木遗传育种国家重点实验室(东北林业大学)开放基金(K2013104)。
