杨树根蘖苗发生机理研究进展

doi:10.19586/j.2095-2341.2025.0001

生物技术进展 ›› 2025, Vol. 15 ›› Issue (3): 372-379.DOI: 10.19586/j.2095-2341.2025.0001

杨树根蘖苗发生机理研究进展

吕婉婉¹^,²(), 郑林²(), 庞红盈², 高宏波¹(), 王宏芝²()

^1.北京林业大学生物科学与技术学院，北京 100083
^2.北京市农林科学院生物技术研究所，北京 100097

收稿日期:2025-01-03 接受日期:2025-03-10 出版日期:2025-05-25 发布日期:2025-07-01
通讯作者: 高宏波,王宏芝
作者简介:吕婉婉E-mail: 2517991628@qq.com；
郑林E-mail: zhenglin@baafs.net.cn第一联系人：（吕婉婉、郑并列第一作者）
基金资助:
国家自然科学基金项目(32171736)

Research Advances on the Mechanism of Root Suckering in Poplar

Wanwan LYU¹^,²(), Lin ZHENG²(), Hongying PANG², Hongbo GAO¹(), Hongzhi WANG²()

^1.School of Biological Science and Technology，Beijing Forestry University，Beijing 100083，China
^2.Institute of Biotechnology，Beijing Academy of Agriculture and Forestry Sciences，Beijing 100097，China

Received:2025-01-03 Accepted:2025-03-10 Online:2025-05-25 Published:2025-07-01
Contact: Hongbo GAO,Hongzhi WANG

摘要/Abstract

摘要：

白杨（Populus sect. Leuce）是我国广泛种植的重要杨树品种，但因扦插生根难，限制了其优良无性系在育种中的应用和良种的有效规模化繁育。根蘖苗具有生长速度快、成活率高的优势，已成为白杨派良种无性繁殖和造林的重要技术手段。目前，杨树根蘖发生的分子机理尚不明确。综述总结了杨树根蘖苗发生的形态学特征和影响根蘖发生的因素，探讨了根蘖苗发生可能涉及的分子信号通路与基因调控网络，不仅为制定有利于提高根蘖苗无性繁殖效率的精准化栽培管理方案提供了理论支撑，也为根蘖发生分子调控机制解析提供了新的思路，对于推进林木遗传改良和良种繁育具有重要意义。

关键词: 杨树, 无性繁殖, 根蘖苗, 激素

Abstract:

White poplar （Populus sect. Leuce） is an important poplar species widely cultivated in China. However， most of its varieties exhibit difficulties in cutting rooting， which limits the application of superior white poplar clones in breeding and the large-scale propagation of high-quality cultivars. Root suckers， characterized by rapid growth and high survival rates， have become a key technique for clonal propagation and afforestation of elite white poplar varieties. Currently， the molecular mechanism of root sucker formation in poplars remains not to be clarified. This review systematically summarized the morphological characteristics of root sucker formation in poplars and the factors influencing this process， and explored potential molecular signaling pathways and gene regulatory networks involved in root sucker initiation. The article not only provided theoretical support for developing precision cultivation and management strategies to enhance the efficiency of clonal propagation via root suckers， but also offered novel insights into the molecular regulatory mechanisms of root sucker formation， which is of great significance for advancing forest genetic improvement and the breeding of superior tree varieties.

Key words: poplar, asexual reproduction, root suckers, hormone

中图分类号:

Q943

吕婉婉, 郑林, 庞红盈, 高宏波, 王宏芝. 杨树根蘖苗发生机理研究进展[J]. 生物技术进展, 2025, 15(3): 372-379.

Wanwan LYU, Lin ZHENG, Hongying PANG, Hongbo GAO, Hongzhi WANG. Research Advances on the Mechanism of Root Suckering in Poplar[J]. Current Biotechnology, 2025, 15(3): 372-379.

图/表 3

图 1 根蘖茎顶端分生组织形成过程[10]A：木栓形成层细胞分裂形成干细胞群；B~C：原形成层带已开始分化的根蘖原基；D：根蘖SAM形成；PS—原形成层带（procambial strand）

Fig. 1 Formation of shoot apical meristem (SAM) of suckers[10]

图 2 植物顶端优势控制根蘖苗发生模式图

Fig. 2 Model of shoot apical dominance controlling root suckering

图3 根不定芽从头再生模式图A：拟南芥离体根组织培养过程中，不定芽发生起源于中柱鞘细胞，愈伤组织诱导阶段形成的形状规则的细胞团突起类似于侧根原基，进一步发育形成茎顶端分生组织，该过程受生长素和细胞分裂素信号协同调控[53,57-59]；B：杨树根蘖苗 (不定芽) 起源于木栓形成层细胞[14]，但具体影响机制有待进一步研究。

Fig. 3 Schematic diagram of de novo shoot regeneration from roots

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杨树根蘖苗发生机理研究进展

Research Advances on the Mechanism of Root Suckering in Poplar

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