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首页> 外文期刊>International journal of soil science >Pisum sativum and Associated Plant Growth Promoting Rhizobacteria: Effect of Normal and Sewage Irrigation
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Pisum sativum and Associated Plant Growth Promoting Rhizobacteria: Effect of Normal and Sewage Irrigation

机译：豌豆（Pisum sativum）和相关植物生长促进根瘤菌：正常灌溉和污水灌溉的影响

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The rhizosphere or the zone of influence around roots harbour a multitude of microorganisms that are affected by both abiotic and biotic stresses. This study investigates the impact of sewage irrigation on culturable rhizobacterial communities of Pisum sativum L. The representative PGPR strains of Bacillus, Pseudomonas, Rhizobium and Azotobacter were tested for plant growth promoting activities and heavy metal tolerance pattern. Rhizobacterial strains isolated from sewage-irrigated soil were more tolerant to heavy metals. The test rhizobacterium Pseudomonas putida was both metal tolerant and efficient in producing PGP compounds like indole acetic acid, ammonia, siderophore and catalase, was subjected to seed germination test. Results confirmed that this bacterium had significant impact on stimulation of root and shoot growth. Our findings suggest that P. putida is a strong candidate for development as soil/seed inoculants to enhance crop yields where untreated sewage water is used in irrigation.
机译：根际周围的根际或影响区含有受非生物和生物胁迫影响的多种微生物。这项研究调查了污水灌溉对豌豆（Pisum sativum L）可培养根瘤菌群落的影响。测试了代表性的PGPR芽孢杆菌，假单胞菌，根瘤菌和固氮菌菌株对植物生长的促进作用和重金属耐受性模式。从污水灌溉土壤中分离出的根瘤菌菌株对重金属的耐受性更高。测试的恶臭假单胞菌对金属具有耐受性，并且在生产PGP化合物（如吲哚乙酸，氨水，铁载体和过氧化氢酶）方面均具有金属耐受性，并经过了种子发芽测试。结果证实该细菌对刺激根和芽生长具有显着影响。我们的发现表明，在未经处理的污水用于灌溉的情况下，恶臭假单胞菌可以作为土壤/种子接种剂来提高作物产量，因此很适合发展。

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