Nitrogen topdressing timing modifies the gluten quality and grain hardness related protein levels as revealed by iTRAQ

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  • Yingxin Zhong, National Technique Innovation Center for Regional Wheat Production/Key Laboratory of Crop Physiology and Ecology in Southern China, Ministry of Agriculture/National Engineering and Technology Center for Information Agriculture, Nanjing Agricultural University
  • ,
  • Weiling Wang, National Technique Innovation Center for Regional Wheat Production/Key Laboratory of Crop Physiology and Ecology in Southern China, Ministry of Agriculture/National Engineering and Technology Center for Information Agriculture, Nanjing Agricultural University, China
  • Xin Huang, National Technique Innovation Center for Regional Wheat Production/Key Laboratory of Crop Physiology and Ecology in Southern China, Ministry of Agriculture/National Engineering and Technology Center for Information Agriculture, Nanjing Agricultural University, China
  • Mingming Liu, National Laboratory of Plant Genetics and Germplasm Enhancement, Nanjing Agricultural University, China
  • Kim Hebelstrup
  • Donglei Yang, National Laboratory of Plant Genetics and Germplasm Enhancement, Nanjing Agricultural University, China
  • Jian Cai, National Technique Innovation Center for Regional Wheat Production/Key Laboratory of Crop Physiology and Ecology in Southern China, Ministry of Agriculture/National Engineering and Technology Center for Information Agriculture, Nanjing Agricultural University, China
  • Xiao Wang, National Technique Innovation Center for Regional Wheat Production/Key Laboratory of Crop Physiology and Ecology in Southern China, Ministry of Agriculture/National Engineering and Technology Center for Information Agriculture, Nanjing Agricultural University, China
  • Qin Zhou, National Technique Innovation Center for Regional Wheat Production/Key Laboratory of Crop Physiology and Ecology in Southern China, Ministry of Agriculture/National Engineering and Technology Center for Information Agriculture, Nanjing Agricultural University, China
  • Weixing Cao, National Technique Innovation Center for Regional Wheat Production/Key Laboratory of Crop Physiology and Ecology in Southern China, Ministry of Agriculture/National Engineering and Technology Center for Information Agriculture, Nanjing Agricultural University, China
  • Tingbo Dai, National Technique Innovation Center for Regional Wheat Production/Key Laboratory of Crop Physiology and Ecology in Southern China, Ministry of Agriculture/National Engineering and Technology Center for Information Agriculture, Nanjing Agricultural University, China
  • Dong Jiang, National Technique Innovation Center for Regional Wheat Production/Key Laboratory of Crop Physiology and Ecology in Southern China, Ministry of Agriculture/National Engineering and Technology Center for Information Agriculture, Nanjing Agricultural University, China
Nitrogen fertilization regimes significantly affect both grain quality and yield. Wheat plants were subjected to different application timing of topdressed nitrogen at the emergence of the top fifth (TL5), top third (TL3) and top first leaf (TL1), respectively. The iTRAQ (isobaric tag for relative and absolute quantitation) technology was adopted to obtain the complete proteome of wheat flour and to identify the differentially expressed proteins (DEPs) as regulated by nitrogen topdressing timing. Collectively, 591 proteins into 17 functional categories in flour of mature grains were identified. In comparison to TL3, 50 and 63 DEPs were identified in TL5 and TL1, respectively. Nine of the DEPs commonly dependent on nitrogen topdressing timing are the γ-gliadins or high-molecular-weight glutenin subunits. Additionally, delaying nitrogen topdressing modified the grain hardness and allergic protein content. The results suggested that altering nitrogen topdressing timing is a potential strategy for pursuing targeted processing quality of wheat flour.
Original languageEnglish
JournalFood Chemistry
Volume277
Pages (from-to)135-144
Number of pages10
ISSN0308-8146
DOIs
Publication statusPublished - 30 Mar 2019

    Research areas

  • Flour proteome, Gluten proteins, Grain hardness, iTRAQ (isobaric tag for relative and absolute quantitation), Nitrogen topdressing timing, Wheat, KERNEL HARDNESS, YIELD, FLOURS, WHEAT, Keywords: Flour proteome, GROWTH, ACCUMULATION, PROTEOMIC ANALYSIS, EXPRESSION

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