耐农药土壤细菌对豇豆抗病、促生长及系统抗性的影响

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2021-12-07 DOI:10.3846/jeelm.2021.14429

A. Bandopadhyay, T. Roy, N. Das

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引用次数: 1

摘要

豇豆是一种一年生豆科植物，它患有由相位大磷虾引起的几种疾病症状。从农药污染的土壤中分离出的根际细菌，经爆破分析鉴定为蜡样芽孢杆菌、安全芽孢杆菌、东湖假单胞菌和铜绿假单胞菌，对灭多威、吡虫啉和多菌灵等至少0.1%的农药具有耐受性。铜绿假单胞菌对病原体的体外拮抗作用最大，达63%。所有根际细菌都被赋予了负责病原体控制和植物生长促进的属性。现场评估结果显示，铜绿假单胞菌对75%的疾病控制率最高，对长度、根瘤数、生物量或单株产量的提高率最高。所有根际细菌通过增加防御酶的产生，在用病原体激发的接种下诱导豇豆的系统抗性。最高的苯丙氨酸解氨酶活性在铜绿假单胞菌处理的植物中表达1.02μmol/ml/min，东湖假单胞菌的多酚氧化酶1.39μmol/ml//min，蜡样芽孢杆菌的几丁质酶0.745μmol/ml/min。根际细菌在农药和重金属污染的有毒环境中具有防治植物病害、促进生长和增强免疫力的前景。

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IMPACT OF PESTICIDE TOLERANT SOIL BACTERIA ON DISEASE CONTROL, PLANT GROWTH PROMOTION AND SYSTEMIC RESISTANCE IN COWPEA

Cowpea, an annual legume, suffers from several disease symptoms caused by Macrophomina phaseolina. Rhizobacteria isolated from pesticide infested soil, identified by blast analysis as Bacillus cereus, Bacillus safensis, Pseudomonas donghuensis and Pseudomonas aeruginosa ascertained tolerant to at least 0.1% pesticides viz. methomyl, imidacloprid and carbendazim. In vitro antagonism against pathogen exhibited maximum by P. aeruginosa 63%. All rhizobacteria were bestowed with attributes responsible for pathogen control and plant growth promotion. Field evaluation resulted highest 75% disease control, enhancement of length, nodule counts, biomass or yield per plant by P. aeruginosa. All rhizobacteria induced systemic resistance in cowpea under challenged inoculation with pathogen by augmenting defensive enzyme production. Highest Phenylalanine Ammonia Lyase activity was expressed in P. aeruginosa treated plants 1.02 μMoles/ml/min, Polyphenol Oxidase by P. donghuensis 1.39 μMoles/ml/min, Chitinase by B. cereus 0.745 μMoles/ml/min and 400 percent relative activity of Peroxidase by P. aeruginosa. The rhizobacteria were prospective for plant disease control, growth promotion and as immunity boosters in pesticide and heavy metal infested toxic environment.

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.