Selenium-resistant strain Comamonas testosterone GX-A1 and application thereof

Abstract

The invention belongs to the technical field of microbiology, and particularly relates to a selenium-resistant strain Comamonas testosteroni GX-A1 and an application of the same. The taxonomic name of the selenium-resistant strain Comamonas testosterone GX-A1 is Comamonas testosterone; the selenium-resistant strain Comamonas testosterone GX-A1 is preserved in Guangdong Microbial Culture Collection Center on December 10, 2020, and the preservation number is GDMCC No.61357. The selenium-resistant strain Comamonas testosterone GX-A1 disclosed by the invention has the advantages that the removal rate of the selenium in the soil is up to 37.44% at most under the condition that the selenium concentration is 2000 mu g / mL. The result can provide strain resources for bioremediation of selenium-polluted areas and provide reference for development and utilization of selenium resources.

Description

technical field

[0001] The invention belongs to the technical field of microbiology, and in particular relates to a selenium-resistant bacterial strain Comamonas testosteroniGX-A1 and an application thereof. Background technique

[0002] Selenium is an essential trace element for the human body. Selenium deficiency will lead to an increase in the incidence of Keshan disease, cancer and cardiovascular diseases. Excessive selenium intake will cause hair loss and poisoning. Selenium mainly exists in four forms in nature, namely selenide (Se 2- ), elemental selenium (Se 0 ), selenite (SeO 3 2- ) and selenate (SeO 4 2- ), and the transformation of the valence state between various forms is closely related to microorganisms. The high-selenium environment is a potential source of selenium-tolerant microbial strains. Studies have shown that under high-selenium environmental stress, bacteria produce a stress response and convert highly toxic inorganic selenium into less toxic s...

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