Research advance on the regulation mechanisms of nitrogen uptake and utilization in wheat
Wheat(Triticum aestivum)provides humans with essential nutrients.With the increasing popula-tion,higher food production is required.Applying nitrogen fertilizer can increase wheat yield,but most nitro-gen fertilizer is not absorbed by crops,which escapes into the environment and causes serious environ-mental pollution.Therefore,improving nitrogen use efficiency in wheat is crucial for agricultural sustainable development.This article summarizes the physiological and molecular basis as well as metabolic regula-tion of nitrogen uptake and utilization in wheat,and proposes several research directions for future focus:(1)The genes of root length,root number,root volume,root area and root angle of wheat should be excavat-ed to further explore their functions in nitrogen uptake and utilization.(2)More attention should be paid to the synergistic and shared regulatory pathways among soil nutrients,soil microbial and abiotic stresses,and nitrogen uptake and utilization of wheat.(3)The function and regulatory mechanism of genes related to nitrogen uptake,transport and assimilation should be strengthened.(4)The excellent allelic variation genes related to nitrogen uptake,transport and assimilation should be identifiied,and excellent wheat ge-netic resources should be mined,in order to provide a basis for improving wheat nitrogen use efficiency.
wheatnitrogen use efficiencyphysiological and molecular basisregulation mechanisms
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