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Open AccessArticle

The Stimulatory Effects of Nanochitin Whisker on Carbon and Nitrogen Metabolism and on the Enhancement of Grain Yield and Crude Protein of Winter Wheat

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College of Resources and Environmental Science, Henan Agricultural University, Zhengzhou 450002, Henan, China
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State Key Laboratory of Wheat and Maize Crop Science, Zhengzhou 450002, Henan, China
3
Collaborative Innovation Center of Henan Grain Crops, Zhengzhou 450002, Henan, China
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College of Plant Protection, Henan Agricultural University, Zhengzhou 450002, Henan, China
*
Authors to whom correspondence should be addressed.
Academic Editor: Marco Rossi
Molecules 2019, 24(9), 1752; https://doi.org/10.3390/molecules24091752
Received: 31 March 2019 / Revised: 26 April 2019 / Accepted: 3 May 2019 / Published: 6 May 2019
Nanochitin whisker (NC) with a cationic nature could enhance plant photosynthesis, grain yield, and quality of wheat, but have not been systematically studied. This study was designed to investigate the stimulatory effects of NC on dry matter (DM) and nitrogen (N) accumulation and translocation, and on the metabolism of carbon (C) and N in later growth stages of winter wheat to reveal the enhancement mechanism of grain yield and crude protein concentration. Different parts of NC-treated plants from pot grown experiments were collected at the pre- and post-anthesis stages. The accumulation, translocation, and contributions of DM and N from pre-anthesis vegetation organs to grains, as well as key metabolic enzyme activities, including sucrose phosphate synthase (SPS) and phosphoenolpyruvate carboxylase (PEPC), were examined. The results showed that, at an application rate of 6 mg·kg−1 of NC in the soil, the accumulation of DM and N were significantly enhanced by 16.2% and 38.8% in pre-anthesis, and by 15.4% and 30.0% in post-anthesis, respectively. Translocation of N and DM in the post-anthesis periods were enhanced by 38.4% and 50.9%, respectively. NC could also stimulate enzyme activities, and increased 39.8% and 57.1% in flag leaves, and by 36.0% and 58.8% in spikes, respectively, at anthesis. SPS and PEPC increased by 28.2% and 45.1% in flag leaves, and by 42.2% and 56.5% in spikes, respectively, at 15 days after anthesis. The results indicated that the NC promoted N metabolism more than C metabolism, and resulted in the enhancement of grain yield by 27.56% and of crude protein concentration in grain by 13.26%, respectively. View Full-Text
Keywords: nanochitin whisker; dry matter; nitrogen; accumulation; translocation; metabolic enzymes; metabolism; winter wheat; yield and crude protein nanochitin whisker; dry matter; nitrogen; accumulation; translocation; metabolic enzymes; metabolism; winter wheat; yield and crude protein
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Cheng, Y.; Wang, Y.; Han, Y.; Li, D.; Zhang, Z.; Zhu, X.; Tan, J.; Wang, H. The Stimulatory Effects of Nanochitin Whisker on Carbon and Nitrogen Metabolism and on the Enhancement of Grain Yield and Crude Protein of Winter Wheat. Molecules 2019, 24, 1752.

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