植物嫁接愈合分子机制研究进展

doi:10.11983/CBB20061

摘要/Abstract

摘要： 嫁接能显著改良单一品种的产量、品质和抗逆等性状, 已广泛应用于农业生产。促进砧木和接穗在嫁接面的快速愈合有利于提高嫁接效率。目前对嫁接愈合调控机制尚了解不足, 因此短时间内难以进行有效的技术改良。嫁接愈合过程包括先后发生的创伤应激响应、愈伤组织形成、砧穗细胞通讯以及砧穗再生重连等生理事件, 均涉及复杂而交联的激素应答及基因调控模式。近年来, 相关领域的研究成果为综合解析嫁接愈合的调控机制奠定了基础。该文综述了在嫁接愈合过程中发挥核心作用的植物激素及其应答方式, 以及激素依赖或非依赖的基因表达调控模式, 以期为深入揭示嫁接愈合分子机制提供参考。

关键词: 嫁接, 嫁接愈合, 内源性植物激素, 基因表达调控

Abstract: Grafting can significantly improve target traits such as yield, quality, and resistance of vegetable varieties, and is widely applied in agricultural practice. Prompting graft healing between scion and stock at the graft interface is necessary to improve graft efficiency. Currently the improvement on the technology is hampered by our lack of understanding of regulatory mechanisms of graft healing. The graft healing process involves complicated and cross-linked physiological events, including wounding stress response, callus formation, cell communication between scion and stock, and the regeneration and reunion of scion and stock. Recent research has provided a good foundation for our understanding the molecular mechanisms of graft healing. In this review, we summarize the central roles of phytohormones in each of the physiological events, and the phytohormone-dependent and -independent gene regulatory networks in graft healing, to provide a reference for further studying graft healing-related molecular mechanisms.

Key words: grafting, graft healing, endogenous plant hormone, gene expression regulation

谢露露, 崔青青, 董春娟, 尚庆茂. 植物嫁接愈合分子机制研究进展. 植物学报, 2020, 55(5): 634-643.

Lulu Xie, Qingqing Cui, Chunjuan Dong, Qingmao Shang. Recent Advances in Molecular Mechanisms of Plant Graft Healing Process. Chinese Bulletin of Botany, 2020, 55(5): 634-643.

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链接本文: https://www.chinbullbotany.com/CN/10.11983/CBB20061

https://www.chinbullbotany.com/CN/Y2020/V55/I5/634

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