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J Agric Food Chem

Title:		Nanoselenium Enhanced Wheat Resistance to Aphids by Regulating Biosynthesis of DIMBOA and Volatile Components
Author(s):		Zhou C; Li D; Shi X; Zhang J; An Q; Wu Y; Kang L; Li JQ; Pan C;
Address:		"Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, China Yuanmingyuan West Road 2, Beijing 100193, P. R. China"
Journal Title:		J Agric Food Chem
Year:		2021
Volume:		20211117
Issue:		47
Page Number:		14103 - 14114
DOI:		10.1021/acs.jafc.1c05617
ISSN/ISBN:		1520-5118 (Electronic) 0021-8561 (Linking)
Abstract:		"The mechanism of nanoselenium (nano-Se) improving the resistance induced by plant components to aphids is unclear. In this study, foliar sprayed nano-Se (5.0 mg/L) could significantly reduce the Sitobion avenae number (36%) compared with that in the control. Foliar application of nano-Se enhanced the antioxidant capacity by reducing malondialdehyde (MDA) and increasing GSH-Px, CAT, GSH, Pro, and VE concentrations in wheat seedlings. The phenylpropane pathway was activated by nano-Se biofortification, which increased apigenin and caffeic acid concentrations. The high-level expression of the related genes (TaBx1A, TaBx3A, TaBx4A, TaASMT2, and TaCOMT) induced the promotion of melatonin (88.6%) and 2,4-dihydroxy-7-methoxy-1,4-benzoxazin-3-one (DIMBOA) (64.3%). Different ratios of the secondary metabolites to nano-Se were taken to examine the effects on resistance of wheat to S. avenae. The results revealed that the combination of nano-Se and melatonin could achieve the best overall performance by reducing the S. avenae number by 52.2%. The study suggests that the coordinated applications of nano-Se and melatonin could more effectively improve the wheat resistance to aphids via the promotion of volatile organic compound synthesis and modulation in phenylpropane and indole metabolism pathways"
Keywords:		Animals *Aphids/genetics Benzoxazines Plant Leaves Triticum/genetics aphids metabolite pathway nanoselenium plant resistance wheat;
Notes:		"MedlineZhou, Chunran Li, Dong Shi, Xinlei Zhang, Jingbang An, Quanshun Wu, Yangliu Kang, Lu Li, Jia-Qi Pan, Canping eng 2021/11/18 J Agric Food Chem. 2021 Dec 1; 69(47):14103-14114. doi: 10.1021/acs.jafc.1c05617. Epub 2021 Nov 17"