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salicylic acid mediates oxidative injury and antioxidant enzymes in Oryza sativa japonica cultivars against quinclorac toxicity

2018全国植物生物学大会

作者： Lijing Liu Fathi-Mohamed Sonbol Bethany Huot YangnanGu John Withers MusokiMwimba Jian YaoSheng Yang He Xinnian Dong School of life and Science Shandong University

It is an apparent conundrum how plants evolved effector-triggered immunity(ETI),involvingprogrammed cell death(PCD),as a major defence mechanism against biotrophic pathogens,because ETI-associated PCD could leave them vulnerable to necrotrophic pathogens thatthrive on dead host ***,during ETI,the normally antagonistic defencehormones,salicylic acid(SA) and jasmonic acid(JA) associated with defence againstbiotrophs and necrotrophs respectively,both accumulate to high *** this study,wemade the surprising finding that JA is a positive regulator of RPS2-mediated *** of JA-responsive genes and de novo JA synthesis following SA accumulation isactivated through the SA receptors NPR3 and NPR4,instead of the JA receptor *** evidence that NPR3 and NPR4 may mediate this effect by promoting degradation ofthe JA transcriptional repressor *** unique interplay between SA and J A offers apossible explanation of how plants can mount defence against a biotrophic pathogen withoutbecoming vulnerable to necrotrophic pathogens.

关键词： salicylic acid Jasmonic acid NPR3 NPR4 JAZ ETI

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Salicylic acid mediates oxidative injury and antioxidant enz...

Effects of salicylic acid on Photosynthesis and Chlorophyll Fluorescence Characteristics of Fluecured Tobacco Leaf in Subdued Light

第十二届全国杂草科学大会

作者： Jian Wang Quyu Kong Chong Yang Rafaqat Ali Gill Jinwen Zhu Weijun Zhou College of Agriculture and Biotechnology Zhejiang University

The quinolinecarboxylic acid quinclorac is a new class of highly selective auxin herbicide and used by both,pre and post transplanting and direct-seeded *** the present study,different concentrations(0,0.1,0.25,1 g/L)of quinclorac were used in order to investigate the physio-chemical changes in two Oryza sativa japonica cultivars Zhejing 88 and Xiushui *** applied salicylic acid(SA)was pre-treated to regulate the oxidative damage caused by auxin *** showed that quinclorac induced a significant inhibition in growth parameters of two rice *** antioxidant enzymes activities in both cultivars were closely associated with quinclorac *** activities of POD,APX,SOD and GSTs were significantly increased,while CAT activity was reduced after quinclorac ***,GSH content was reduced and GSSG was increased in Zhejing 88but no significant change in Xiushui *** accumulation of MDA and ROS contents was elevated with the increasing concentrations of quinclorac as compared with untreated *** of SA significantly increased the plant biomass and the activity of antioxidant enzymes while reduced the MDA and ROS as compared to the quinclorac toxicity *** staining(NBT and DAB)and ultrastrucrural observations solidify our results that higher level of quinclorac(1g/L)significantly reduced the plant physio-chemical attributes as compared to control *** analyses verify that SA statistically alleviated the negative effects of quinclorac and also further improve the plant defense ***,according to these findings cultivar Xiushui 134 showed the higher tolerance to quinclorac than Zhejing 88 with respect to physio-histo-chemical parameters.

关键词： quinclorac salicylic acid rice antioxidant histochemical staining microscopic study

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Agricultural Science & Technology 2014年第1期15卷 33-38页

作者：王辉刘国顺云菲张军郭超超河南农业大学国家烟草栽培生理生化研究基地河南郑州450002

[Objective] This study aimed to test whether salicylic acid （SA） can im-prove the physiological functions of flue-cured tobacco under subdued light condition, and to determine the mechanism of its action. [Method] The tobacco plants under subdued light were foliar-sprayed with 100 mg/L of SA. Then, the physiological in-dices such as plant fresh weight and dry weight, chlorophyl content, photosynthetic parameters and chlorophyl fluorescence parameters were measured. SPSS17.0 and Excellwere adopted for variance analysis and significance test. [Result] The leaf photosynthetic rate （Pn）, stomatal conductance （Gs） and transpiration rate （Tr） of tobacco plants in subdued light were al decreased while the intercellular CO2 con-centration （Ci） was increased, suggesting that non-stomatal limitation led to the de-crease of Pn under weak light intensity stress. SA released the inhibition of tobacco plant growth in weak light, as it elevated the leaf photosynthetic rate, the maximum photochemical efficiency of PSⅡ, potential activity of PSⅡ, effective photochemical efficiency of PSⅡ and photochemical quenching coefficient in weak light significant-ly, and reduced the non-photochemical quenching coefficient. [Conclusion] SA has significant effects on the photosynthetic characteristics of flue-cured tobacco in weak light, and it can improve the synthesis or distribution of photosynthesis product, and the efficiency of light energy, conducive to plant growth and development.

关键词： Flue-cured tobacco salicylic acid Subdued light Photosynthesis Chlorophyll fluorescence

Preparation and Quality Evaluation of salicylic acid Gel

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China Detergent & Cosmetics 2022年第3期7卷 71-76页

作者： Zheng Muchuang Lei Cuiting Huang Tanjie ChenChuwei Chen Shixin Guangdong North Indust Trial And Commercial Institutes of Green Skincare China Guangdong yalijie Fine Chemical Co. Ltd.China

Taking salicylic acid as the active ingredient and 10%sodium hydroxide aqueous solution as the neutralizer,the best matrix for preparing gel was screened,and the salicylic acid aqueous gel was *** properties,pH value and viscosity were determined,and the stability,antibacterial activity and irritation were *** experimental results showed that the best gel matrix was cellulose,which had the best stability,could increase the solubility of salicylic acid in gel preparations,solved the problem of easy precipitation of salicylic acid crystals,enhanced the antibacterial activity,and reduced irritation,providing a reference for the application of salicylic acid in cosmetics.

关键词： salicylic acid aqueous gel stability experiment bacteriostatic activity irritation

A Structure and Antioxidant Activity Study of Paracetamol and salicylic acid

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Pharmacology & Pharmacy 2014年第13期5卷 1185-1191页

作者： Rosivaldo SBorges Taina G.Barros Glaecia A.N.Pereira Joao Batista Jr Raimundo F.G.P.Beleza Filho Andrex A.S.Veiga Moises Hamoy Vanessa J.Mello Alberico B.Fda Silva Carlos A.L.Barros Nucleo de Estudos e Selecao de Moleculas Bioativas Instituto de Ciencias da SaudeUniversidade Federal do ParaBelemBrazil Laboratorio de Farmacologia e Toxicologia de Produtos Naturais Instituto de Ciencias da SaudeUniversidade Federal do ParaBelemBrazil Instituto de Quimica de Sao Carlos Universidade de Sao PauloSao CarlosBrazil

The paracetamol has more antioxidant properties than the salicylic acid on the several oxidative stress-forced models and one possible mechanism is due to electron or hydrogen transfer by the evaluated hydroxyl radicals. The antioxidant mechanism for the compounds studied here was performed by molecular modeling using quantum chemical calculations at the B3LYP level of theory. Our results show that the paracetamol has more antioxidant properties than the salicylic acid in experimental and theoretical studies. The theoretical mechanism show that the hydrogen transfer is more favorable than the electron transfer. From the study it was concluded that the electron abstraction for paracetamol is more favored than salicylic acid.

关键词： Paracetamol salicylic acid Phenol Derivatives NSAIDs Antioxidant

Induced Resistance of Tomato against Gray Mold (Botrytis cinerea) by salicylic acid (SA)

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Plant Diseases and Pests 2012年第2期3卷 60-63页

作者： Jia LIU College of Horticulture Jilin Agricultural University

[ Objective ] The paper was to explore the induced resistance of tomato against gray mold （Botrytis cinerea） by salicylic acid. [ Method ] SA was used as an inducer to treat tomato seedlings, the effects of SA on mycelial diameter and spore germination of B. cinerea were studied, and the changes of 4 defense enzyme activities containing catalase （CAT）, peroxidase （POD）, polyphenol oxidase （PPO） and phenylalanine ammonia lyase （PAL）, as well as malondialdehyde （MDA） content during the production process of induced resistance were also measured. [ Result] SA had no inhibitory effect against spore germination and myce- lial growth of B. cinerea within the concentration range, and the relative induced effect had different degrees of improvement after treatment. The induced effect was the best as B. cinerea was challenged to inoculate at the third day after using 150 mg/L SA in tomato plants, and the duration of resistance was 10 -15 d. After treated by SA, CAT, POD, PPO and PAL first increased and then decreased in systemic induced resistance against B. cinerea, which were significantly higher than control. Meanwhile, MDA content showed ascendant trend in wavy line form. [ Conclusion ] The use of SA within a certain concentration range is safe; CAT, POD, PPO and PAL activities have positive correlation with induced resistance against B. cinerea, the increase of MDA content also has close relationship with the imvrovement of disease resistance.

关键词： Tomato Gray mold salicylic acid Mechanism of systemic resistance Systemic induced resistance China

Effects of Chitosan and salicylic acid on Cold Resistance of Litchi under Low Temperature

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Agricultural Science & Technology 2011年第1期12卷 26-29,32页

作者：朱广文周天姚石华中农业大学食品科技学院湖北武汉430070 广东石油化工学院化学与生命科学学院广东茂名525000

This paper focused on the effect of spraying chitosan and salicylic acid to Litchi under low temperature stress *** physiology and biochemistry of litchi were studied as *** showed that the appropriate concentration of chitosan and salicylic acid treatment could effectively reduce injury caused by low temperature to litchi,compared with water control,chlorophyll,proline,soluble protein content of litchi after treatment and the activity of protective enzyme increasing ***,the accumulation of resistance could significantly be ***,when 1 000 mg/L chitosan combined with 50 mg/L salicylic acid,the litchi acquired the best cold resistance capability.

关键词： Litchi salicylic acid Chitosan Cold resistance

Fast Counting Research of Escherichia coli in Water Based on salicylic acid Culture Solution by High Performance Liquid Chromatography

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Meteorological and Environmental Research 2013年第9期4卷 34-35,38页

作者： Wei Liang Zhaoyu Mo Baoying Lv Yanxian Nong Guilin Products Quality Supervision and Inspection Institute Environmental Protection Research Institute of Guangxi

[ Objective] Based on salicylic acid culture solution, high performance liquid chromatography （HPLC） was used to rapidly count E. coli in water. [Method] Because E. coli metabolism could produce polyatomic phenol （mainly 2, 5-dihydroxybenzoic acid） in salicylic acid culture solu- tion, and generated amount of polyatomic phenol was proportionate to the number of E. coli, we detected 2, 5-dihydroxybenzoic acid by HPLC. Through linear relationship, the number of E. co/i was calculated, realizing fast counting of E. coli, and detection time only needed 3 h. [ Result] Linearity range of the method detecting E. coli was 5 × 10^4 -5 × 10^10cells/ml, and the detection limit was 1 × 10^4 cells/ml. [ Conclusion] HPLC method realized rapid counting of E. coil Key words E. coli; Fast counting; HPLC; salicylic acid; China

关键词： E. cofi Fast counting HPLC salicylic acid China

Differential Display of Cotton cDNAs Expressed by salicylic acid Induction

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Tsinghua Science and Technology 2003年第4期8卷 498-501页

作者：李骥赵广荣刘进元 Department of Biological Sciences and Biotechnology Tsinghua University Beijing 100084 China

salicylic acid (SA) is very important in systemic acquired resistance and hypersensitive response in plant defense, and yet its role is not fully understood. This study seeks to clarify the mechanism of SA induced resistance in cotton. Total RNA was extracted from low gossypol cultivated cotton seedlings treated with exogenous SA and subjected to fluorescent differential display PCR (FDD PCR). Seven cDNA fragments were selected from the total ten differential bands. Comparison with Genbank database shows that all seven cDNA sequences are newly discovered in cotton. However, they share high amino acid identity to some registered cDNAs. Among them, three of the cDNAs could be predicted to encode basic chitinase, penicillin binding 6 b precursor and ATP dependent DNA helicase RecG, while the functions of the other four cDNAs are undetermined. Dot blot analysis demonstrates that the expression of five cDNAs in cotton seedlings is induced by SA, while SA induction has a negative effect on the transcript accumulation of the other two cDNAs (E13 and E14). Since SA was previously shown to enhance the resistance to cotton wilt disease, the finding of a basic chitinase gene in cotton expressed by SA induction will provide a new insight into induced disease resistance in cotton.

关键词： cotton cDNA salicylic acid induced expression fluorescent differential display PCR (FDD PCR)