Version 1
: Received: 2 November 2023 / Approved: 2 November 2023 / Online: 3 November 2023 (01:32:00 CET)
Version 2
: Received: 5 December 2023 / Approved: 11 December 2023 / Online: 14 December 2023 (12:03:52 CET)
How to cite:
Du, H.; Li, M.; Zhao, S.L.; Fan, S.H.; Yu, H.X.; Luo, J.J.; Peng, F.T. Effects of Exogenous Amino Acids on Drought Resistance of Peach (Prunus persica (L.) Batsch). Preprints2023, 2023110184. https://doi.org/10.20944/preprints202311.0184.v1
Du, H.; Li, M.; Zhao, S.L.; Fan, S.H.; Yu, H.X.; Luo, J.J.; Peng, F.T. Effects of Exogenous Amino Acids on Drought Resistance of Peach (Prunus persica (L.) Batsch). Preprints 2023, 2023110184. https://doi.org/10.20944/preprints202311.0184.v1
Du, H.; Li, M.; Zhao, S.L.; Fan, S.H.; Yu, H.X.; Luo, J.J.; Peng, F.T. Effects of Exogenous Amino Acids on Drought Resistance of Peach (Prunus persica (L.) Batsch). Preprints2023, 2023110184. https://doi.org/10.20944/preprints202311.0184.v1
APA Style
Du, H., Li, M., Zhao, S.L., Fan, S.H., Yu, H.X., Luo, J.J., & Peng, F.T. (2023). Effects of Exogenous Amino Acids on Drought Resistance of Peach (<em>Prunus persica</em> (L.) Batsch). Preprints. https://doi.org/10.20944/preprints202311.0184.v1
Chicago/Turabian Style
Du, H., Jing Jing Luo and Fu Tian Peng. 2023 "Effects of Exogenous Amino Acids on Drought Resistance of Peach (<em>Prunus persica</em> (L.) Batsch)" Preprints. https://doi.org/10.20944/preprints202311.0184.v1
Abstract
Peach (L.) is a kind of fruit tree with considerable economic and nutritional significance. However, it shows a high sensitivity to drought stress, which has a profound impact on its growth. L-methionine (MET) and L-proline (PRO) are two amino acids synthesized by plants, which play an important role in abiotic stress response. However, their exact mechanism of action remains elusive. Through physiological analysis, MET (500ppm) and PRO (500ppm) treatments can effectively reduce the adverse effects of drought stress on the growth of peach seedlings. Studies have shown that amino acid (AA) can effectively inhibit the stomatal opening of plant leaves and increase the photosynthetic rate. In addition, the application of MET or PRO promoted the accumulation of carbohydrates in leaf tissues, increased intracellular water potential (24%, 24%), reduced osmotic potential (21%, 24%), and alleviated membrane damage caused by drought. Using Evans Blue, nitroblue tetrazolium (NBT) and DAB (3, 3-diaminobenzidine) staining experiments, We confirmed that the increase in antioxidant enzyme activity in leaves may be due to the removal of reactive oxygen species (ROS) in vivo, namely the downregulation of malondialdehyde (18%, 19%) ，peroxidase (50%, 5%) and superoxide dismutase (12%, 14%) activities. In addition, the application of exogenous amino acids also improved the root morphology and vitality of peach seedlings, which was conducive to absorbing external buffer substances and alleviating drought stress. In summary, the application of exogenous amino acids can effectively alleviate the effects of drought stress on plants and reduce the harm.
Keywords
peach; amino acid; drought stress; osmotic; physiological index
Subject
Biology and Life Sciences, Horticulture
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
