J Plant Ecol ›› 2022, Vol. 15 ›› Issue (3): 581-595 .DOI: 10.1093/jpe/rtab087

• Research Articles • Previous Articles     Next Articles

Arbuscular mycorrhizal fungi enhance the growth of the exotic species Ambrosia artemisiifolia

Lingjie Kong1,†, Xue Chen1,†, Ellen Heininger Yerger2, Qiao Li3, Fengxin Chen1, Haiyun Xu1,* and Fengjuan Zhang1,*   

  1. 1 College of Life Science, Hebei University, Baoding, Hebei 071002, China, 2 Department of Biology, Indiana University of Pennsylvania, Indiana, PA 15705, USA, 3 State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100081, China

    *Corresponding author. xuhaiyun2013@126.com (H.X.); fengjuanzhang@126.com (F.Z.)
    These authors contributed equally to this work.
  • Received:2021-02-03 Revised:2021-03-15 Accepted:2021-06-30 Online:2021-08-02 Published:2022-06-01

Abstract:

Arbuscular mycorrhizal fungi (AMF) can increase host plant nutrient uptake via their mycelium, thus promoting plant growth. AMF have always been associated with successful invasion of most exotic plant species. However, knowledge regarding how AMF affect the success of plant invasion remains limited. Exotic Ambrosia artemisiifolia is an invasive and mycorrhizal plant species. A long-term field experiment was conducted to examine the differences in AMF diversity and composition in the roots of A. artemisiifolia and Setaria viridis subjected to interspecific competition during growth. A greenhouse experiment was also performed to test the effect of Funneliformis mosseae on the growth of these two species. Ambrosia artemisiifolia invasion caused AMF diversity to change in native S. viridis roots. Meanwhile, the relative abundance of F. mosseae was significantly higher in the roots of A. artemisiifolia than in those of S. viridis. The higher AMF colonization rate in the exotic species (A. artemisiifolia) than in the native species (S. viridis) was found in both the field and greenhouse experiments. The greenhouse experiment possibly provided that AMF advantaged to the growth of A. artemisiifolia, by influencing its photosynthetic capacity as well as its phosphorus and potassium absorption. These observations highlight the important relationship of AMF with the successful invasion of A. artemisiifolia.

Key words: Ambrosia artemisiifolia, arbuscular mycorrhizal fungi, competitive advantage, Funneliformis mosseae, nutrient absorption, successful invasion

摘要:
丛枝菌根真菌促进外来植物豚草的生长
丛枝菌根真菌(AMF)可以通过其菌丝增加寄主植物对养分的吸收,从而促进植物生长。丛枝菌根真菌一直与大多数外来植物的成功入侵联系在一起。然而,有关丛枝菌根真菌如何影响植物入侵成功的机制仍然有待研究。豚草(Ambrosia artemisiifolia)是一种外来的菌根植物。通过长期田间实验,我们研究了种间竞争对豚草和狗尾草(Setaria viridis)根系丛枝菌根真菌多样性和组成的影响。此外,在温室实验中探究了摩西球囊霉(Funneliformis mosseae)对这两种植物生长的影响。研究结果表明,豚草入侵改变了本地植物狗尾草根系丛枝菌根真菌的多样性。另外,豚草根系中摩西球囊霉的相对多度显著高于狗尾草根系中。在田间和温室实验中均发现外来种豚草的丛枝菌根真菌侵染率高于本地种狗尾草。温室实验结果表明,丛枝菌根真菌通过影响豚草的光合能力以及磷和钾的吸收而促进豚草生长。这些研究结果揭示了丛枝菌根真菌和豚草成功入侵之间的重要关系。

关键词: 豚草(Ambrosia artemisiifolia), 丛枝菌根真菌, 竞争优势, 摩西球囊霉(Funneliformis mosseae), 养分吸收, 成功入侵