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Chinese Agricultural Science Bulletin ›› 2018, Vol. 34 ›› Issue (23): 53-59.doi: 10.11924/j.issn.1000-6850.casb17060080

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Effects of Symbiotic Fungi on the Absorption of Trace Elements in Legumes and Related Mechanism

  

  • Received:2017-06-16 Revised:2017-07-22 Accepted:2017-08-24 Online:2018-08-17 Published:2018-08-17

Abstract: To better understand the problems of available trace elements deficiency or their ratio imbalance in the soil, this review introduced plant-beneficial fungi interactions, especially the associations between legume with endophytes and mycorrhizal fungi. Plant-beneficial fungal symbiosis could enhance water and mineral nutrient uptake to some extent, leading to a promotion in plant growth and crop yield. This review summarized the mechanism behind symbiotic fungi-mediated promotion of plant trace element uptake from soil environment. The mechanism could be concluded to three aspects: (1) acid chemicals released by symbiotic system dissolved rhizospheric minerals, leading to an increased availability of soil trace elements; (2) secondary metabolites produced by symbiotic fungi increased efficiency of root trace element uptake and transport; (3) symbiotic fungi colonization induced expression of genes that related to trace element absorption and transport. At the end of this paper, we also discussed the existing problems in this field and prospected the potential application of symbiotic fungi in agriculture.