TY - JOUR
T1 - Nanobubbles promote nutrient utilization and plant growth in rice by upregulating nutrient uptake genes and stimulating growth hormone production
AU - Wang, Ying
AU - Wang, Shuo
AU - Sun, Jingjing
AU - Dai, Hengren
AU - Zhang, Beijun
AU - Xiang, Weidong
AU - Hu, Zixin
AU - Li, Pan
AU - Yang, Jinshui
AU - Zhang, Wen
N1 - Funding Information:
This work was supported by grants from the Fudan Zhangjiang Institute Guide Fund ( ZJXDJJ2019001 ) and the National Natural Science Foundation of China ( 51978489 ). This research is partially supported by the United States Department of Agriculture (USDA), the National Institute of Food and Agriculture , AFRI project [ 2018-07549 ]. The USDA did not formally review this study. The views expressed in this document are solely those of authors and do not necessarily reflect those of the above agencies. The USDA does not endorse any products or commercial services mentioned in this publication.
Publisher Copyright:
© 2021 The Authors
PY - 2021/12/15
Y1 - 2021/12/15
N2 - Excessive application of chemical fertilizers can lead to serious environmental problems. In this study, we explored the use of nanobubble water for irrigation of crop rice as a means of reducing fertilizer use. The effect of nanobubbles on plant growth and nutrient uptake was evaluated in the laboratory, while crop yield and the efficiency of fertilizer use were evaluated in a field study. The laboratory experiments indicated that nanobubbles significantly improve plant height and root length in rice seedlings. Nanobubble treatment stimulated synthesis of the growth hormone gibberellin and upregulated the plant nutrient absorption genes OsBT, PiT-1 and SKOR, resulting in increased nutrient uptake and utilization by the roots. The field experiments verified the laboratory observations, showing that nanobubble treatment significantly increases rice yield by almost 8% when using similar levels of fertilizer as controls. Moreover, the same yield as controls was achieved with approximately 25% less fertilizer. As well as their impact on growth hormones and nutrient absorption genes, nanobubbles, due to hydrophobic and surface charge properties, enhance the release and absorption of soil nutrients, thereby reducing fertilizer demand. Overall, this study highlights a new and sustainable water irrigation strategy for enhancing crop yield and reducing chemical fertilizer waste.
AB - Excessive application of chemical fertilizers can lead to serious environmental problems. In this study, we explored the use of nanobubble water for irrigation of crop rice as a means of reducing fertilizer use. The effect of nanobubbles on plant growth and nutrient uptake was evaluated in the laboratory, while crop yield and the efficiency of fertilizer use were evaluated in a field study. The laboratory experiments indicated that nanobubbles significantly improve plant height and root length in rice seedlings. Nanobubble treatment stimulated synthesis of the growth hormone gibberellin and upregulated the plant nutrient absorption genes OsBT, PiT-1 and SKOR, resulting in increased nutrient uptake and utilization by the roots. The field experiments verified the laboratory observations, showing that nanobubble treatment significantly increases rice yield by almost 8% when using similar levels of fertilizer as controls. Moreover, the same yield as controls was achieved with approximately 25% less fertilizer. As well as their impact on growth hormones and nutrient absorption genes, nanobubbles, due to hydrophobic and surface charge properties, enhance the release and absorption of soil nutrients, thereby reducing fertilizer demand. Overall, this study highlights a new and sustainable water irrigation strategy for enhancing crop yield and reducing chemical fertilizer waste.
KW - Crop yield
KW - Nanobubbles
KW - Nutrient use efficiency
KW - Reducing fertilizer
KW - Rice
KW - Sustainable green agriculture
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U2 - 10.1016/j.scitotenv.2021.149627
DO - 10.1016/j.scitotenv.2021.149627
M3 - Article
C2 - 34426308
AN - SCOPUS:85112484598
SN - 0048-9697
VL - 800
JO - Science of the Total Environment
JF - Science of the Total Environment
M1 - 149627
ER -