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中国农学通报 ›› 2026, Vol. 42 ›› Issue (15): 65-76.doi: 10.11924/j.issn.1000-6850.casb2025-0675

• 生物科学 • 上一篇    下一篇

水稻对镉吸收-迁移-分配的多层次互作网络及基因调控研究进展

郑兴鑫1(), 李祖然2, 段雨默1, 陈玲3, 曹力3, 祖艳群1()   

  1. 1 云南农业大学资源与环境学院, 昆明 650201
    2 云南农业大学园林园艺学院, 昆明 650201
    3 云南农业大学动物科学学院, 昆明 650201
  • 收稿日期:2025-08-11 修回日期:2025-12-22 出版日期:2026-08-13 发布日期:2026-08-13
  • 通讯作者:
    祖艳群,女,1966年出生,湖南沅江人,教授,博士生导师,博士,研究方向:土壤污染评价及其生态修复、重金属污染土壤的农业安全利用。通信地址:650201 云南昆明盘龙区沣源路,云南农业大学,Tel:0871-65227942,E-mail:
  • 作者简介:

    郑兴鑫,女,2000年出生,云南云县人,硕士研究生,研究方向:重金属、农药污染过程及机理。通信地址:650201 云南昆明盘龙区沣源路,云南农业大学,Tel:86-17787267406,E-mail:

  • 基金资助:
    国家自然科学基金“云南野生稻镉吸收累积的根部响应特征及其机理”(42267062)

Research Advances on Multi-level Interaction Networks and Gene Regulation of Cadmium Absorption, Translocation, and Distribution in Rice (Oryza sativa L.)

ZHENG Xingxin1(), LI Zuran2, DUAN Yumo1, CHEN Ling3, CAO Li3, ZU Yanqun1()   

  1. 1 College of Resources and Environment, Yunnan Agricultural University, Kunming 650201
    2 College of Landscape and Horticulture, Yunnan Agricultural University, Kunming 650201
    3 College of Animal Science, Yunnan Agricultural University, Kunming 650201
  • Received:2025-08-11 Revised:2025-12-22 Published:2026-08-13 Online:2026-08-13

摘要:

为探究水稻对镉吸收-迁移-分配的多层次互作网络及基因调控机制,以期为培育低镉累积水稻品种奠定理论基础。本文系统梳理了水稻根系吸收、木质部装载、韧皮部再分配及籽粒累积的镉迁移过程,并整合了低累积相关的遗传调控网络与分子育种技术,并重点解析了转运蛋白、转录因子及非编码RNA在重金属的吸收、迁移、分配及籽粒积累中的作用,同时,探讨了基因过表达与基因编辑技术在降低水稻籽粒镉累积方面的应用潜力。目前对水稻镉吸收-迁移-分配的多层次互作网络及基因调控研究中,仍面临诸多挑战,包括互作网路复杂与调控层级不清、基因-环境互作与田间应用困难、多种重金属协同胁迫对于复杂田间环境下的分子机制尚待阐明。建议可针对关键转录因子或非编码RNA的调控元件进行精准编辑或设计,融合时空特异性基因编辑、合成生物学、多组学整合分析等前沿技术,深入解析并精准调控镉吸收-转运-解毒网络,为定向培育出兼具低镉累积特性与高产稳产优势的新种质提供依据。

关键词: 水稻, 镉, 低累积, 响应机制, 遗传调控

Abstract:

The multi-level interactive networks and genetic regulatory mechanisms of cadmium absorption, translocation, and distribution in rice were discussed in order to provide a theoretical basis for cultivating low-cadmium-accumulating rice. The processes of root uptake, xylem loading, phloem redistribution, and grain accumulation of cadmium in rice were summarized, as well as the genetic regulatory networks for low accumulation and molecular breeding technologies. And the roles of transport proteins, transcription factors, and non-coding RNAs in the absorption, translocation, distribution, and grain accumulation of heavy metals were analyzed as key points. Additionally, the application potential of gene overexpression and gene editing technologies in reducing cadmium accumulation in rice grains were discussed. Current research on the multi-level interaction networks and genetic regulation of cadmium absorption, transport, and distribution in rice still faces challenges, such as the complexity of interaction networks, unclear regulatory hierarchies, difficulties in gene-environment interactions and field applications, and insufficient understanding of the molecular mechanisms underlying co-stress from multiple heavy metals in complex field environments. It is recommended to precisely edit or design of regulatory elements targeting key transcription factors or non-coding RNAs, and integrate spatiotemporal-specific gene editing, synthetic biology, and multi-omics analyses to deeply elucidate and precisely regulate the cadmium uptake-transport-detoxification network. This will provide a basis for the targeted development of new germplasms with both low cadmium accumulation and high, stable yields.

Key words: rice, cadmium, low accumulation, response mechanisms, genetic regulation

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