Screening and Identification of Soil Selenium-Enriched Strains and Application in .

Microorganisms

Engineering Research Center of Agricultural Microbiology Technology, Ministry of Education & Heilongjiang Provincial Key Laboratory of Ecological Restoration and Resource Utilization for Cold Region & Key Laboratory of Microbiology, College of Heilongjiang Province, School of Life Sciences, Heilongj

Published: June 2024


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Article Abstract

Selenium (Se) is an essential trace element for human physiological metabolism. The application of organic Se as a source to cultivate Se-rich plants for micronutrient supplementation has been receiving increasing attention. In our study, a bacterial strain named H1 was isolated from the soil in Heilongjiang Province, China, and under optimal culture conditions, the unit Se content could reach 3000 μg·g and its 16S ribosomal DNA sequence seemed to be a new molecular record of an species. After the domestication of Se tolerance and Se-rich experiments, H1 can be used as a Se source for cultivation of Se-rich . The results showed that soluble protein, soluble sugar, free amino acid and vitamin C contents in were notably increased by 28.7%, 21.8%, 32.5% and 39.2% under the treatment of Se concentration of 0.24 mg·kg, respectively. These findings enhance our understanding that H1 is more conducive to Se uptake and nutrient accumulation.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11205748PMC
http://dx.doi.org/10.3390/microorganisms12061136DOI Listing

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