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首页> 外文期刊>Journal of plant interactions >Association of some plant defense enzyme activities with systemic resistance to early leaf blight and leaf spot induced in tomato plants by azoxystrobin and Pseudomonas fluorescens
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Association of some plant defense enzyme activities with systemic resistance to early leaf blight and leaf spot induced in tomato plants by azoxystrobin and Pseudomonas fluorescens

机译：嘧菌酯和荧光假单胞菌诱导的某些植物防御酶活性与系统抗性对番茄植物早期叶枯病和叶斑的抗性

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Abstract Azoxystrobin at three different concentrations, namely, 31.25, 62.50 and 125 g a.i. ha?1 mancozeb (1 kg ha?1) and Pseudomonas fluorescens (10 kg ha?1) were evaluated for their efficacy in inducing defense enzymes in tomato against Alternaria solani and Septoria lycopersici. The activity of defense enzymes peroxidase (PO), polyphenol oxidase (PPO), phenylalanine ammonia lyase (PAL), β-1, 3 glucanase, chitinase, catalase and defense-inducing chemicals (total phenols) was found to be increased in azoxystrobin and P. fluorescens-treated tomato plants. The activity of these defense enzymes and chemicals was higher in azoxystrobin (125 g a.i. ha?1) and P. fluorescens-treated tomato plants challenge inoculated with the pathogens compared to other treatments. Increased expression of specific isoforms of PO and PPO was also observed due to ISR induction.
机译：摘要三种浓度的嘧菌酯分别为31.25、62.50和125 g a.i.评估了ha？1代森锰锌（1 kg ha？1）和荧光假单胞菌（10 kg ha？1）在诱导番茄中抗solternaria solani和Septoria lycopersici的防御酶中的功效。发现嘧菌酯和三羟色胺的活性增加了防御酶过氧化物酶（PO），多酚氧化酶（PPO），苯丙氨酸氨裂合酶（PAL），β-1、3葡聚糖酶，几丁质酶，过氧化氢酶和防御诱导化学物质（总酚）的活性。经过荧光假单胞菌处理的番茄植物。与其他处理方法相比，在天冬酰胺（125 g a.i. ha？1）和经荧光假单胞菌处理过的番茄植物中，这些防御酶和化学物质的活性更高。由于ISR诱导，还观察到PO和PPO的特定同工型的表达增加。

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