A strain of Micromonospora actinomycete, and applications thereof

A technology of micromonospora and actinomycetes, applied in the direction of application, bacteria, chemicals for biological control, etc.

Active Publication Date: 2017-09-15
XUZHOU NORMAL UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there is no report on the study of the rare actinomycetes of t

Method used

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  • A strain of Micromonospora actinomycete, and applications thereof
  • A strain of Micromonospora actinomycete, and applications thereof
  • A strain of Micromonospora actinomycete, and applications thereof

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Embodiment Construction

[0019] The present invention obtains a bacterial strain with strong salt-tolerant and life-promoting activity through the isolation of actinomycetes in the rhizosphere soil of the coastal zone and the screening of salt-tolerant and growth-promoting characteristics, and the serial number is RS019. Its taxonomic status was confirmed by morphological characteristics, physiological and biochemical, 16S rRNA gene sequencing and phylogenetic analysis. Through plate seed germination and pot experiment verification, adopt the actinomycete Micromonospora aurantiaca RS019 provided by the invention, have the ability to promote wheat seed germination and seedling growth under salt stress, significantly improve the adaptability under its salt stress, the The method can be fermented and used as bacterial fertilizer to improve the salt-tolerant ability of wheat and promote the planting of wheat in saline-alkali land.

[0020] The isolated strain is Micromonospora aurantiacus, code-named RS01...

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Abstract

The present invention discloses a strain of Micromonospora aurantiaca, wherein the Micromonospora aurantiaca has a code name of No.RS019, is preserved in Guangdong culture collection center, and has the preservation number of GDMCC 60177. According to the present invention, the separated and screened coastal zone soil Micromonospora aurantiaca RS019 can fix nitrogen fixation, can promote the production of plant growth hormone indole acetic acid (IAA), ammonia and the like, and can tolerate 5% NaCl; the seed germination rate of the wheat treated by the Micromonospora aurantiaca suspension can be significantly improved at the NaCl concentration of 100 mM, and after the wheat seedling is subjected to root-irrigation inoculation with the Micromonospora aurantiaca suspension, the salt disease symptoms can be significantly retarded and the biomass can be increased under the salt stress so as to promote the growth of the wheat, such that the Micromonospora aurantiaca can easily improve the salt tolerance of plants and reduce the use of chemical fertilizers.

Description

technical field [0001] The invention belongs to the research field of microbial fertilizer and crop adversity protection, and relates to a micromonospora actinomycete and its application. Background technique [0002] Soil salinization is one of the main abiotic stress factors threatening global agricultural production and crop yield. Currently, nearly 50% of the irrigated land in the world is threatened by salt stress to varying degrees. According to statistics, the area of ​​saline-alkali soil in the world accounts for about 7% of the total land area, and it has a tendency to increase year by year. The salinized soil area in my country is about 1.0×10 8 hm 2 , accounting for about 37% of the total land area. Soil salinization not only affects plant metabolism and photosynthesis, but also reduces plant intake of soil nutrients and trace elements. Previous studies have shown that NaCl is the most important component of salinized soil. Under its stress, plants will experi...

Claims

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Application Information

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IPC IPC(8): C12N1/20A01N63/00A01P21/00C12R1/04
CPCA01N63/00C12N1/205C12R2001/04
Inventor 秦盛白娟娈蒋继宏王田田邢珂丁鹏冯维维王玉陈攀
Owner XUZHOU NORMAL UNIVERSITY
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