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Ying Yong Sheng Tai Xue Bao

Title:		[Changes of phenols and lignin contents in alfalfa leaf damaged by Odontothrips loti]
Author(s):		Wang XS; Yang CL; Wang SS; Hu GX;
Address:
Journal Title:		Ying Yong Sheng Tai Xue Bao
Year:		2014
Volume:		25
Issue:		6
Page Number:		1688 - 1692
DOI:
ISSN/ISBN:		1001-9332 (Print) 1001-9332 (Linking)
Abstract:		"In order to investigate the changes of secondary metabolites content of alfalfa induced by thrips Odontothrips loti damaging, two alfalfa strains, one resistant to thrips (R-1) and the other susceptible to thrips (I-1) , were chosen to measure the phenols and lignin contents of alfalfa leaves under infestation with thrips at different densities (0, 1, 3, 5, 7 thrips x branch(-1), and 0 thrip x branch(-1) as control). After infestation 7 days, the polyphenols, tannin and condensed tannin contents increased in both leaves of R-l and I-i with the increasing thrips density, the simple phenols content had no significant difference, while the lignin content increased significantly compared with the control. After infestation 14 days, the polyphenols, tannin, condensed tannin and lignin contents in both leaves of R-1 and I-1 increased obviously with the increasing thrips density, while the simple phenols content had no significant difference. The lignin content increased significantly, and was significantly higher under 7 thrips x branch(-1) than under the control. After infestation 21 days, the polyphenols, tannin, and lignin contents in both leaves of R-1 and I-1 increased obviously with the increasing thrips density, and were the highest under 7 thrips x branch(-1). Simple phenols content of I-1 strain was increased significantly, but that of R-1 strain had no significant change. The condensed tannin content in both leaves of R-1 and I-1 was not obvious compared with the control. Phenols and lignin contents in R-1 and I-1 leaves increased obviously after thrips infestation, and the polyphenols, tannin and lignin contents increased faster in R-1 strain than in I-1 strain. Thrips infestation had inductive effects on phenols and lignin contents of alfalfa, which could be used to evaluate the resistance of alfalfa"
Keywords:		Animals *Herbivory Lignin/*chemistry Medicago sativa/*chemistry Phenols/*chemistry Plant Leaves/chemistry Tannins/chemistry *Thysanoptera;
Notes:		"MedlineWang, Xiao-Shan Yang, Cheng-Lin Wang, Sen-Shan Hu, Gui-Xin chi China 2014/09/17 Ying Yong Sheng Tai Xue Bao. 2014 Jun; 25(6):1688-92"