Stenotrophomonas and applications thereof

Abstract

The invention provides a strain of stenotrophomonas sp., which is named as stenotrophomonas F6, and has a preservation number of CGMCC No.6547. Two active algicidal substances, namely cyclo(glycine-proline) and hydroquinone, are separated from the metabolism products of the stenotrophomonas F6, and then the substances are purified and identified. The half effective concentration of the cyclo(glycine-proline) on inhibiting microcystis aeruginosa 9110 is 9.5 mg/L, and the cyclo(glycine-proline) has no inhibiting effect on synechococcus BN60. The half effective concentrations of hydroquinone on inhibiting microcystis aeruginosa 9110 and synechococcus BN60 are 0.96 mg/L and 5.6 mg/L. The stenotrophomonas F6 and the active algicidal substances (cyclo(glycine-proline) and hydroquinone) can be applied to the development and production of novel algicide, and finally are applied to the control of cyanobacterial bloom in fresh water.

Description

Technical field The present invention relates to microorganisms, in particular to a strain of Stenotrophomonas and its application. Background technique The frequent occurrence of cyanobacteria blooms due to the increasing eutrophication of water bodies has caused serious environmental and economic problems, and therefore has attracted widespread attention. In China, many freshwater lakes (such as Taihu Lake, Dianchi Lake, Chaohu Lake, etc.) are severely affected by cyanobacteria blooms. Therefore, it is very necessary to effectively control cyanobacteria blooms. At present, the methods of controlling cyanobacteria bloom mainly include physical methods, chemical methods and biological methods. The physical methods mainly include artificial fishing and mechanical algae removal. The chemical method mainly includes adding the algicide chemical substance copper sulfate, herbicide and so on. However, physical and chemical methods limit their effective use due to high cost, secon...

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Problems solved by technology

However, physical and chemical methods limit their effective use due to high cost, secondary pollution, and potential harm to freshwater ecosystems

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