Arbuscular mycorrhiza fungi facilitate rapid adaptation of Elsholtzia splendens to copper

The Science of the Total Environment
Junmin LiZexin Jin

Abstract

Closely associated microbes have been shown to drive local adaptation of plants. However, few studies provide direct evidence, disclosing the role of arbuscular mycorrhiza fungi (AMF) in their rapid adaptation of plants toward heavy metal tolerance. Elsholtzia splendens is a Cu-tolerant plant that was used as a model plant to study seed morphological traits as well as traits related to seed germination and seedling growth. This was achieved after acclimation for two generations with 1000mg/kg CuSO4 in either absence or presence of AMF. In the absence of AMF, acclimation to Cu for two generations significantly decreased surface area, perimeter length, and perimeter width of E. splendens seeds, as well as seedling survival rate and fresh weight of the radicle of seedlings. However, in the presence of AMF, both the germination rate and the germination index of E. splendens seeds as well as the fresh weights of hypocotyl and radicle significantly increased. These results revealed that after Cu acclimation treatment, seeds and seedlings that had been inoculated with AMF outperformed those without AMF inoculation under Cu addition, indicating that AMF can facilitate rapid adaptation of E. splendens to Cu stress. In addition, two gene...Continue Reading

Citations

Jul 2, 2019·Ecotoxicology and Environmental Safety·Natielo Almeida SantanaRodrigo Josemar Seminoti Jacques
Apr 29, 2021·Biometals : an International Journal on the Role of Metal Ions in Biology, Biochemistry, and Medicine·Anayat Rasool MirShamsul Hayat
Jun 14, 2021·Environmental Science and Pollution Research International·Aida AnsariFarid Shekari

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