Journal of Integrative Agriculture ›› 2024, Vol. 23 ›› Issue (3): 741-768.DOI: 10.1016/j.jia.2023.12.023

• •    下一篇

高粱抗逆的分子机制:对作物改良策略的启示

  

  • 修回日期:2023-08-09 接受日期:2023-11-13 出版日期:2024-03-20 发布日期:2024-03-02

Molecular mechanisms of stress resistance in sorghum: Implications for crop improvement strategies

Hongxiang Zheng1*, Yingying Dang1*, Xianmin Diao2#, Na Sui1#   

  1. 1 Shandong Provincial Key Laboratory of Plant Stress/College of life Sciences, Shandong Normal University, Jinan 250014, China

    2 Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China

  • Revised:2023-08-09 Accepted:2023-11-13 Online:2024-03-20 Published:2024-03-02
  • About author:#Correspondence Xianmin Diao, E-mail: diaoxianmin@caas.cn; Na Sui, E-mail: suina@sdnu.edu.cn
  • Supported by:
    We are grateful for financial support from the National Key R&D Program of China (2022YFD1201702), the National Natural Science Foundation of China (32272040), and the Agricultural Fine Seed Project of Shandong Province, China (2021LZGC006).

摘要: 在自然条件下,干旱、盐、极端温度、重金属污染等非生物胁迫是限制作物生长及产量的主要环境因素。高粱是一种光合高效的C4草类植物,由于其出色的抗逆性,能够在各种不利环境下生长。研究高粱的抗逆机制,可为培育抗逆作物提供理论基础,并且有利于利用边际土壤,保证正常耕地和粮食安全。在本综述中,我们讨论了自然环境下高粱对干旱胁迫、盐碱胁迫、温度胁迫以及对土壤重金属胁迫的适应机制,包括高粱在抵抗不同非生物胁迫中特殊性的反应,高粱抗逆种质的筛选及相关基因、QTL的鉴定及功能研究。此外,我们还讨论了当前报道的不同胁迫耐受性高粱种质的应用潜力,强调了在边际土壤种植及推广高粱的可行性。

Abstract:

Abiotic stresses, such as drought, salt, extreme temperatures, and heavy metal pollution, are the main environmental factors that limit crop growth and yield.  Sorghum, a C4 grass plant with high photosynthetic efficiency, can grow in adverse environmental conditions due to its excellent stress resistance characteristics.  Therefore, unraveling the stress-resistance mechanism of sorghum could provide a theoretical basis for developing and cultivating various stress-resistant crops.  This understanding could also help to create a conducive environment for using marginal soil in agriculture and ensuring food security.  In this review, we discuss the adaptation mechanisms of sorghum under drought, salinity, temperature, and soil heavy metal stresses, the specific response to stress, the screening of sorghum-resistant germplasm, and the identification and functional analysis of the relevant genes and quantitative trait loci (QTL).  In addition, we discuss the application potential of different stress-tolerant sorghum germplasms reported to date and emphasize the feasibility and potential use in developing and promoting highly stress-tolerant sorghum in marginal soil.

Key words: abiotic stress , C4 plants ,  QTL ,  sorghum ,  stress resistance ,  yield stability