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Pathways of Phosphorus Absorption and Early Signaling between the mycorrhizal Fungi and Plants

Phyton-International Journal of Experimental Botany 2021年第5期90卷 1321-1338页

作者： Griselda Madrid-Delgado Marcos Orozco-Miranda Mario Cruz-Osorio Ofelia Adriana Hernández-Rodríguez Raúl Rodríguez-Heredia Melchor Roa-Huerta Graciela Dolores Avila-Quezada Facultad de Ciencias Agrotecnológicas Universidad Autónoma de Chihuahua(UACH)Chihuahua31000México Innovak Global Chihuahua31375México

This review highlights the key role that mycorrhizal fungi play in making phosphorus(Pi)more available to plants,including pathways of phosphorus absorption,phosphate transporters and plant-mycorrhizal fungus symbiosis,especially in conditions where the level of inorganic phosphorus(Pi)in the soil is *** fungi colonization involves a series of signaling where the plant root exudates strigolactones,while the mycorrhizal fungi release a mixture of chito-oligosaccharides and liposaccharides,that activate the symbiosis process through gene signaling pathways,and contact between the hyphae and the *** the symbiosis is established,the extraradical mycelium acts as an extension of the roots and increases the absorption of nutrients,particularly phosphorus by the phosphate *** then moves along the hyphae to the plant root/fungus *** transfer of Pi occurs in the apoplectic space;in the case of arbuscular mycorrhizal fungi,Pi is discharged from the arbuscular to the plant’s root symplasm,in the membrane that surrounds the *** is then absorbed through the plant periarbuscular membrane by plant phosphate ***,plants can acquire Pi from soil as a direct absorption *** a result of this review,several genes that codify for high-affinity Pi transporters were *** plants,the main family is Pht1 although it is possible to find others such as Pht2,Pht3,Pho1 and *** in plants,mycorrhizal fungi have genes belonging to the Pht1 *** arbuscular mycorrhizal fungi we found L1PT1,GiPT,MtPT1,MtPT2,MtPT4,HvPT8,ZmPht1,TaPTH1.2,GmosPT and ***1,HcPT2 and BePT have been characterized in ectomycorrhizal *** gene has a different way of expressing *** this review,we present diagrams of the symbiotic relationship between mycorrhizal fungi and the *** knowledge allows us to design solutions to regional problems such as food production in soils with low levels of Pi.

关键词： interaction,mycorrhiza establishment,symbiosis phosphate uptake

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