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首页> 外文期刊>Canadian journal of microbiology >The effects of Pantoea sp strain Y4-4 on alfalfa in the remediation of heavy-metal-contaminated soil, and auxiliary impacts of plant residues on the remediation of saline-alkali soils
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The effects of Pantoea sp strain Y4-4 on alfalfa in the remediation of heavy-metal-contaminated soil, and auxiliary impacts of plant residues on the remediation of saline-alkali soils

机译：Pantoea SP菌株Y4-4对重金属污染土壤修复苜蓿的影响，植物残留对盐碱土壤修复的辅助影响

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摘要

The plant-growth-promoting rhizobacterium (PGPR) Y4-4 was isolated from plant rhizosphere soil and identified as Pantoea sp. by 16S rRNA sequence analysis. The effects of strain Y4-4 on alfalfa grown in heavy-metals-contaminated soil was investigated using a pot experiment. In a Cu-rich environment, the shoot dry mass and total dry mass of plants inoculated with strain Y4-4 increased by 22.6% and 21%, and Cu accumulation increased by 15%. In a Pb-Zn-rich environment, the shoot dry mass and total dry mass of plants inoculated with strain Y4-4 increased by 23.4% and 22%, and Zn accumulation increased by 30.3%. In addition, the salt tolerance and biomass of wheat seedlings could be improved by applying strain Y4-4 mixed with plant residue as a result of the Cu-rich plant residues providing copper nutrition to wheat. This study offers an efficient PGPR with strong salt tolerance and a safe strategy for the post-treatment of plant residue.
机译：植物生长促进的Rhizobacterium（PGPR）Y4-4与植物根际土壤分离，并鉴定为Pantoea Sp。 16S rRNA序列分析。 采用盆栽试验研究了在重金属污染土壤中种植的苜蓿菌株Y4-4的影响。 在富含Cu的环境中，接种菌株Y4-4的芽干肿块和植物的总干燥质量增加了22.6％和21％，Cu积累增加了15％。 在富含PB-Zn的环境中，接种菌株Y4-4的芽干料和植物的总干燥质量增加23.4％和22％，Zn积累增加了30.3％。 此外，由于Cu的植物残留物将与植物残留物混合的菌株Y4-4施用，可以提高小麦幼苗的耐盐性和生物质。 本研究提供了高效的PGPR，具有强大的耐盐性和植物残留后治疗后的安全策略。

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