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首页> 外文期刊>Archives of microbiology >Molecular characterization of plant growth promoting rhizobacteria that enhance peroxidase and phenylalanine ammonia-lyase activities in chile (Capsicum annuum L.) and tomato (Lycopersicon esculentum Mill.).
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Molecular characterization of plant growth promoting rhizobacteria that enhance peroxidase and phenylalanine ammonia-lyase activities in chile (Capsicum annuum L.) and tomato (Lycopersicon esculentum Mill.).

机译：促进根际细菌生长的植物的分子特征，其增强了辣椒（辣椒）和番茄（番茄）的过氧化物酶和苯丙氨酸氨裂合酶的活性。

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Pythium and Phytophthora species are associated with damping-off diseases in vegetable nurseries and reduce seedling stand and yield. In this study, bacterial isolates were selected on the basis of in vitro antagonism potential to inhibit mycelial growth of damping-off pathogens along with plant growth properties for field assessment in wet and winter seasons. We demonstrate efficacy of bacterial isolates to protect chile and tomato plants under natural vegetable nursery and artificially created pathogen-infested (Pythium and Phytophthora spp.) nursery conditions. After 21 days of sowing, chile and tomato plants were harvested and analysed for peroxidase and phenylalanine ammonia-lyase activities. Pseudomonas sp. strains FQP PB-3, FQA PB-3 and GRP(3 )were most effective in increasing shoot length (P > 0.05%) in both artificial and natural field sites. For example, Pseudomonas sp. FQA PB-3 treatment increased shoot length by 40% in the artificial Pythium 4746 infested nursery site in chile plants in thewet season. The bacterial treatments significantly increased the activity of peroxidase and phenylalanine ammonia-lyase in chile and tomato plant tissues, which are well known as indicators of an active lignification process. Thus, we conclude that treatment with potential bacterial plant growth promoting agents help plants against pathogen invasion by modulating plant peroxidase and phenylalanine ammonia-lyase activities.
机译：腐霉菌和疫霉菌与蔬菜苗圃的减毒病有关，会降低幼苗的地位和产量。在这项研究中，细菌分离物的选择基于体外拮抗潜力，以抑制阻尼病原体的菌丝体生长以及植物生长特性，以便在潮湿和冬季进行田间评估。我们证明了细菌分离物在天然蔬菜苗圃和人工创建的病原体侵染（腐霉菌和疫霉菌）苗圃条件下保护辣椒和番茄植物的功效。播种21天后，收获智利和番茄植物，并分析其过氧化物酶和苯丙氨酸氨裂合酶的活性。假单胞菌FQP PB-3菌株，FQA PB-3和GRP（3）菌株在增加人工和自然田间茎长方面最有效（P> 0.05％）。例如，假单胞菌属。在湿季中，FQA PB-3处理在辣椒植物中受到人工腐霉4746侵染的苗圃中使苗长增加了40％。细菌处理显着提高了辣椒和番茄植物组织中的过氧化物酶和苯丙氨酸氨裂合酶的活性，众所周知，这是活跃的木质化过程的指标。因此，我们得出结论，用潜在的细菌植物生长促进剂进行处理可以通过调节植物过氧化物酶和苯丙氨酸氨裂合酶的活性来帮助植物抵抗病原体的入侵。

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