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Mycorrhizae and Tolerance of Abiotic Stress in Citrus Plants

  • Chun-Yan Liu
  • Ying-Ning Zou
  • De-Jian Zhang
  • Bo Shu
  • Qiang-Sheng Wu
Chapter
Part of the Soil Biology book series (SOILBIOL, volume 55)

Abstract

Many environmental factors such as soil water, soil salinity, and low or high temperature confer strong inhibition in tree growth and fruit quality of citrus. Soil arbuscular mycorrhizal fungi (AMF) can establish arbuscular mycorrhizal symbiosis with terrestrial plants. It is documented that citrus plants are heavily dependent on arbuscular mycorrhizal symbiosis. Generally, these negative abiotic stresses dramatically inhibit both AMF infection in citrus roots and extraradical hyphae development in rhizosphere soils. Nevertheless, studies indicated the mitigated effects in citrus plants subjected to short-term or long-term adverse environments. Under abiotic stresses conditions, AMF still significantly promotes citrus plant growth performance and subsequently considerably enhances the tolerance of abiotic stresses. Many studies had shown the underlying mechanisms of AMF-enhanced tolerance of abiotic stresses in citrus plants: (1) greater plant growth performance and root architecture; (2) enhanced water and nutrient absorption by extraradical hyphae; (3) massive accumulation of osmolytes and enhancement of antioxidant-protected systems; (4) changes in phytohormones and signaling substances; and (5) upregulation expression of relevant stressed genes. Future perspectives in this field are proposed. Such benefits of mycorrhizal symbiosis can provide the approach as biofertilizers to sustain agriculture and environments.

Notes

Acknowledgments

This work was supported by the National Key Research and Development Program of China (2018YFD1000300), the Plan in Scientific and Technological Innovation Team of Outstanding Young Scientist, Hubei Provincial Department of Education (T201604), the Key Project of the Science and Technology Research, Hubei Provincial Department of Education (D20171304), the Hubei Agricultural Science and Technology Innovation Action Project, and the Hubei Agricultural Major Technical Cooperation Project.

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© Springer Nature Switzerland AG 2019

Authors and Affiliations

  • Chun-Yan Liu
    • 1
  • Ying-Ning Zou
    • 1
  • De-Jian Zhang
    • 1
  • Bo Shu
    • 1
  • Qiang-Sheng Wu
    • 1
  1. 1.College of Horticulture and GardeningYangtze UniversityJingzhouChina

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