Abstract：
:The applications of ZnO nanoparticles in agriculture have largely contributed to crop growth regulation, quality enhancement, and induction of stress tolerance, while the underlying mechanisms remain elusive. Herein, the involvement of melatonin synthesis and metabolism in the process of nano-ZnO induced drought tolerance was investigated in maize. Drought stress resulted in the changes of subcellular ultrastructure, the accumulation of malondialdehyde and osmolytes in leaf. The nano-ZnO (100 mg L-1) application promoted the melatonin synthesis and activated the antioxidant enzyme system, which alleviated drought-induced damage to mitochondria and chloroplast. These changes were associated with upregulation of the relative transcript abundance of Fe/MnSOD, Cu/Zn SOD, APX, CAT, TDC, SNAT, COMT, and ASMT induced by nano-ZnO application. It was suggested that modifications in endogenous melatonin synthesis were involved in the nano-ZnO induced drought tolerance in maize.
journal_name
Int J Mol Scijournal_title
International journal of molecular sciencesauthors
Sun L,Song F,Guo J,Zhu X,Liu S,Liu F,Li Xdoi
10.3390/ijms21030782subject
Has Abstractpub_date
2020-01-25 00:00:00issue
3issn
1422-0067pii
ijms21030782journal_volume
21pub_type
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