植物生态学报 ›› 2024, Vol. 48 ›› Issue (5): 651-659.DOI: 10.17521/cjpe.2023.0383  cstr: 32100.14.cjpe.2023.0383

所属专题: 入侵生态学

• 研究论文 • 上一篇    下一篇

丛枝菌根真菌提高入侵杂草南美蟛蜞菊对除草剂的耐受性

胡蝶1, 蒋欣琪1, 戴志聪2, 陈戴一1, 张雨1, 祁珊珊1,*(), 杜道林3   

  1. 1江苏大学农业工程学院, 江苏镇江 212013
    2江苏大学环境与安全工程学院, 环境生态研究所, 江苏镇江 212013
    3江苏大学京江学院, 江苏镇江 212013
  • 收稿日期:2023-12-21 接受日期:2024-02-06 出版日期:2024-05-20 发布日期:2024-02-26
  • 通讯作者: (qishanshan1986120@163.com)
  • 基金资助:
    国家自然科学基金(32171509);国家自然科学基金(32271587);江苏省自然科学基金(BK20211321)

Arbuscular mycorrhizal fungi enhance the capacity of invasive Sphagneticola trilobata to tolerate herbicides

HU Die1, JIANG Xin-Qi1, DAI Zhi-Cong2, CHEN Dai-Yi1, ZHANG Yu1, QI Shan-Shan1,*(), DU Dao-Lin3   

  1. 1School of Agricultural Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China
    2School of the Environment and Safety Engineering, Institute of Environment and Ecology, Jiangsu University, Zhenjiang, Jiangsu 212013, China
    3Jingjiang College, Jiangsu University, Zhenjiang, Jiangsu 212013, China
  • Received:2023-12-21 Accepted:2024-02-06 Online:2024-05-20 Published:2024-02-26
  • Contact: (qishanshan1986120@163.com)
  • Supported by:
    National Natural Science Foundation of China(32171509);National Natural Science Foundation of China(32271587);Natural Science Foundation of Jiangsu Province(BK20211321)

摘要:

入侵杂草南美蟛蜞菊(Sphagneticola trilobata)的优势生长严重危害本土植物群落和生态系统的稳定性。近年来, 化学防治依然是最主要的杂草防控手段。丛枝菌根真菌(AMF)作为一种菌根共生体, 在宿主植物的生长和抵抗外界环境胁迫中起到重要的作用。该研究通过温室控制实验设置4种处理方式: 对照组、只接种AMF、只喷施除草剂以及喷施除草剂并接种AMF, 以验证AMF是否在入侵杂草南美蟛蜞菊响应除草剂中起到重要作用。结果显示: 在草甘膦铵盐除草剂的胁迫下, 南美蟛蜞菊的菌根侵染率、泡囊数以及菌根侵染丰度等级占比都显著上升; 相比于只喷施除草剂处理, 接种AMF显著增加南美蟛蜞菊的叶面积、地上生物量和根冠比, 显著减少黄酮醇相对含量以及叶片损害数。首次发现与AMF的共生能缓解除草剂对入侵杂草南美蟛蜞菊的胁迫。因此, 在杂草的化学防治过程中, 与AMF的共生可能极大提高杂草对除草剂的抗性, 可为入侵杂草的有效防控提供新的思考途径。

关键词: 南美蟛蜞菊, 丛枝菌根真菌, 草甘膦铵盐除草剂, 植物微生物互作

Abstract:

Aims Invasive Sphagneticola trilobataseriously endangers the stability of local plant communities and ecosystems. Recently, chemical control is still the most important method for controlling it. Arbuscular mycorrhizal fungi (AMF) play an important role in the growth of host plants and their resistance to environmental stresses. Therefore, this study tested whether AMF played an important role in herbicide resistance of S. trilobata.

Methods In this study, a greenhouse experiment was conducted, in which the stems of S. trilobata were subject to the following four treatments: control (CK), only inoculation of AMF, only application of herbicides (HC), and herbicide plus AMF (AMF + HC).

Important findings The results showed that under the stress of glyphosate ammonium salt, the colonization rate, vesicle number and ratio of colonization abundance class increased significantly. Compared with herbicide application, AMF inoculation significantly increased the leaf area, above-ground biomass and root shoot ratio of S. trilobata, and significantly reduced the flavonol relative content and the damaged leaf number. This study found that the herbicide stress on invasive S. trilobata was alleviated because of the symbiosis with AMF. Therefore, AMF may greatly improve the resistance to chemical herbicides in this invasive forb. The results of this study may provide a new insight into the effective control of invasive weeds.

Key words: Sphagneticola trilobata, arbuscular mycorrhizal fungi, glyphosate ammonium salt herbicide, plant-microbial interaction