Abstract
Nitrogen and phosphorus dual stress significantly inhibited the maize growth and decreased the accumulation of nitrogen and phosphorus in plants. The co-application of nitrogen and phosphorus most significantly increased the biomass compared to the dual deficiency stress, and to our surprise, the repair effect of nitrogen application alone was basically similar to the repair effect of simultaneous application of nitrogen and phosphorus reflected in biomass as well as nitrogen and phosphorus content. Transcriptomic analysis showed that DEGs related to phosphorus transporters in N versus NP group and N versus P group were all up-regulated. These all confirm that the nitrogen application alone mitigated damages caused by low nitrogen and phosphorus dual stress comparable to that of nitrogen and phosphorus co-application. These indicate that the presence of nitrogen is conducive to the accumulation and transportation of phosphorus.
Highlights
Nitrogen and phosphorus are indispensable macroelements for plant growth and development
Phosphorus is the components of nucleic acids, phospholipids, adenosine phosphate, various enzymes amongst other molecules, and it is involved in photosynthesis, respiration, energy storage and transfer and other important processes [4,5,6]
PHOSPHATE2 (PHO2) and NITRATE TRANSPORTER1.1 (NRT1.1) affect each other’s transcript level and the accumulation of PHOSPHATE STARVATION RESPONSE1 (PHR1), and this process depends on NO3- uptake signaling mediated by NRT1 [18]
Summary
Nitrogen and phosphorus are indispensable macroelements for plant growth and development. The absorption and utilization of different elements by plants often have interaction, nitrogen and phosphorus maybe the same [17]. Recent studies reported the phosphorus and nitrogen signaling interaction in Arabidopsis. PHOSPHATE2 (PHO2) and NITRATE TRANSPORTER1.1 (NRT1.1) affect each other’s transcript level and the accumulation of PHOSPHATE STARVATION RESPONSE1 (PHR1), and this process depends on NO3- uptake signaling mediated by NRT1 [18]. When undergone low nitrogen and phosphorus dual deficiency, what is the difference between nitrogen and phosphorus co-application and nitrogen or phosphorus application alone on plant growth and the processes of nitrogen, phosphorus, and. ICEMEE 2021 potassium accumulation and transportation? What kind of interaction exists between nitrogen and phosphorus? This paper discusses these issues at the physiological and transcriptional levels
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