砧/穗间交流的物质及其嫁接愈合效应
The Exchange Substance of Rootstock and Scion and Its Grafting Healing Effect
杜浩 1陈瑶 1吴庆贤 1刘思彤 1靳乐妮 1尹增芳1
作者信息
- 1. 南京林业大学南方现代林业协同创新中心,生命科学学院,南京 210037
- 折叠
摘要
植物嫁接愈合受砧/穗自身和外部环境等多种因素的调节和控制.在嫁接伤口愈合期间,砧木与接穗的相互作用不仅体现在明显的组织学特征的变化,还涉及了复杂的生理生化和分子调控机制.砧木和接穗愈合经历隔离层的形成、愈伤组织的发生、分化以及维管组织的再分化四个步骤,在此过程中砧/穗细胞、组织或器官之间相互影响,频繁发生物质交流,如植物激素、蔗糖、核酸和蛋白质等物质通过胞间连丝发生短距离运输或是经韧皮部进行长距离运输,从而开始形成砧/穗之间的识别、接纳、包容效应,最终完成愈合过程,并对嫁接苗后续生长过程起到重要影响.该文就当前植物嫁接过程中砧/穗愈合的组织学特征、砧/穗间交流物质的属性及其对砧/穗愈合进程的影响进行综述,为植物嫁接繁殖的生产实践提供基础理论指导.
Abstract
Plant graft healing is regulated by rootstock/scion themselves and the external environmental factors.The interaction between rootstock and scion is not only present histological characteristic changes,but also involves complex physiological,biochemical and molecular regulatory mechanisms during the graft healing.Root-stock and scion have completed healing by undergoing four steps of isolation layer formation,callus formation,differentiation and vascular tissue redifferentiation.Essentially,the cells,tissues or organs of rootstock and scion interact with each other and frequently exchange substances,such as plant hormones,sugar,nucleic acids and pro-teins by short-distance transporting through plasmodesmata,as well as by long-distances transporting over phloem in the process of grafting healing.Thus,the recognition,acceptance and inclusion effect between the rootstock and scion is established,and the graft healing process is finished finally.It also plays an important role in the subsequent growth process of grafted seedlings.In this paper,the histological characteristic,exchanges substances property and the factors which are affected the healing process have been reviewed,and it will provide the basic theoretical guid-ance for the production practice of plant graft propagation.
关键词
砧木/接穗/亲和性/物质运输途径/嫁接愈合影响因子Key words
rootstock/scion/compatibility/transportation routes of substances/factors affecting graft healing引用本文复制引用
基金项目
国家重点研发计划专项(2022YFC2601004)
江苏省林业科技创新与推广项目(LYKJ[2019]44)
江苏高校优势学科建设工程资助项目(PAPD)
出版年
2024
NETL
NSTL
万方数据