The N uptake-associated physiological processes at late growth stage in wheat (Triticum aestivum) under N deprivation combined with deficit irrigation condition

Copyright © 2021 Elsevier Masson SAS. All rights reserved.

Bibliographische Detailangaben
Veröffentlicht in:Plant physiology and biochemistry : PPB. - 1991. - 164(2021) vom: 15. Juli, Seite 160-172
1. Verfasser: Zhang, Yanyang (VerfasserIn)
Weitere Verfasser: Zhao, Yingjia, Sun, Liyong, Han, Peng, Bai, Xinyang, Lin, Ruize, Xiao, Kai
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2021
Zugriff auf das übergeordnete Werk:Plant physiology and biochemistry : PPB
Schlagworte:Journal Article Differentially expressed gene Growth feature N deprivation N uptake Wheat (Triticum astivum L.) Nitrogen N762921K75
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245 1 4 |a The N uptake-associated physiological processes at late growth stage in wheat (Triticum aestivum) under N deprivation combined with deficit irrigation condition 
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520 |a Elucidating physiological mechanisms underlying the plant N uptake benefits breeding of high N use efficiency (NUE) crop cultivars. In this study, we investigated the growth and N uptake-associated processes in wheat under N deprivation and deficit irrigation, using two contrasting NUE cultivars. Compared with sufficient-N (SN), deficient-N (DN) treatment reduced plant biomass, N accumulation, and yields in two cultivars (high NUE Shinong 086 and N deprivation-sensitive Jimai 585), suggesting that N deprivation negatively regulates plant growth and N uptake. Shinong 086 was better on growth and N uptake-associated traits than Jimai 585 due to the improved root biomass across soil profile, which was consistent with the decrease of available N contents in soil layers. These results suggested that the improved root system architecture (RAS) enhances plant acquirement for soil N under N- and water-deprivation condition, contributing to the plant N uptake and yield formation capacities. Transcriptome investigation revealed that numerous genes were differentially expressed (DE) in the N-deprived Shinong 086 plants, which involve the regulation of complicate biochemical pathways. These results suggested that the modified RAS and N uptake in high NUE plants are accomplished underlying the regulation of numerous DE genes. TaWRKY20, a gene in ZFP transcription factor family, was functionally characterized for the role in mediating plant N uptake. Overexpression of it conferred plants improved growth and N uptake under DN due to its regulation on TaNRT2.1 and TaNRT2.2, two nitrate transporter genes. Our investigation provides insights in high NUE mechanisms in wheat under N deprivation 
650 4 |a Journal Article 
650 4 |a Differentially expressed gene 
650 4 |a Growth feature 
650 4 |a N deprivation 
650 4 |a N uptake 
650 4 |a Wheat (Triticum astivum L.) 
650 7 |a Nitrogen  |2 NLM 
650 7 |a N762921K75  |2 NLM 
700 1 |a Zhao, Yingjia  |e verfasserin  |4 aut 
700 1 |a Sun, Liyong  |e verfasserin  |4 aut 
700 1 |a Han, Peng  |e verfasserin  |4 aut 
700 1 |a Bai, Xinyang  |e verfasserin  |4 aut 
700 1 |a Lin, Ruize  |e verfasserin  |4 aut 
700 1 |a Xiao, Kai  |e verfasserin  |4 aut 
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773 1 8 |g volume:164  |g year:2021  |g day:15  |g month:07  |g pages:160-172 
856 4 0 |u http://dx.doi.org/10.1016/j.plaphy.2021.04.023  |3 Volltext 
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