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Ying Yong Sheng Tai Xue Bao

Title:		[Regulation effect of exogenous salicylic acid on weed suppression and molecular physiological characteristics of allelopathic rice]
Author(s):		Qiu L; Wang HB; Xiong J; Fang CX; Wu WX; He HB; Lin WX;
Address:		"Key Laboratory of Biopesticide and Chemical Biology of Education Ministry, Fujian Agriculture and Forestry University, Fuzhou 350002, China. ql01241031@126.com"
Journal Title:		Ying Yong Sheng Tai Xue Bao
Year:		2008
Volume:		19
Issue:		2
Page Number:		330 - 336
DOI:
ISSN/ISBN:		1001-9332 (Print) 1001-9332 (Linking)
Abstract:		"To investigate the feasibility of using exogenous salicylic acid (SA) to regulate the allelopathic weed suppression of rice, this paper studied the effects of different concentrations exogenous SA on the weed-suppression and physiological-biochemical characteristics of allelopathic rice PI312777, and the relative expression quantity of gene ZB8 in the rice by real time quantitative RT-PCR (FQ-PCR). The results showed that exogenous SA induced the enhancement of the allelopathic potential of donor rice in suppressing target weed plants, and this inducing effect was SA dose and treatment time dependent. After foliar spraying SA, the inhibitory effect of PI312777 on barnyardgrass increased significantly, and the root vigor and superoxide dismutase (SOD) and peroxidase (POD) activities of PI312777 increased, while its catalase (CAT) activity decreased. The reverse was true for the target weed barnyardgrass. At the same time, the phenylalanine ammonialyase (PAL) activity of PI312777 increased significantly, leading to an increase of the total content of phenols. Among the test concentrations of SA, 0.2 mmol x L(-1) had the best inducing effect, under which, the relative expression quantity of ZB8 increased first and decreased then, with a peak at 24 hours after treatment"
Keywords:		"Catalase/metabolism Echinochloa/drug effects/*growth & development Gene Expression Regulation, Plant/drug effects Herbicides/metabolism/pharmacology Oryza/genetics/*metabolism Peroxidase/metabolism Pheromones/metabolism/pharmacology Reverse Transcriptase;"
Notes:		"MedlineQiu, Long Wang, Hai-Bin Xiong, Jun Fang, Chang-Xun Wu, Wen-Xiang He, Hai-Bin Lin, Wen-Xiong chi English Abstract Research Support, Non-U.S. Gov't China 2008/05/10 Ying Yong Sheng Tai Xue Bao. 2008 Feb; 19(2):330-6"