Bacillus cereus and application thereof to improve plant drought-resistant capability

A Bacillus cereus, ability technology, applied to a strain of Bacillus cereus and its application in improving plant drought resistance, can solve the problem of affecting plant water and nutrient absorption, reducing the diversity of community structure, and reducing the number of soil bacteria and other issues, to achieve the effect of excellent strain resources, improve drought resistance, and improve drought resistance

Active Publication Date: 2015-05-13
SHANDONG FOREST SCI RES INST
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AI Technical Summary

Problems solved by technology

However, in arid habitats, a large number of microorganisms cannot survive, resulting in a significant reduction in the number of soil bacteria and a significant decrease in the diversity of the community structure, thereby affecting the growth environment of the rhizosphere soil of plants, affecting the normal water and nutrient absorption of plants, and reducing the drought resistance of plants

Method used

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  • Bacillus cereus and application thereof to improve plant drought-resistant capability
  • Bacillus cereus and application thereof to improve plant drought-resistant capability
  • Bacillus cereus and application thereof to improve plant drought-resistant capability

Examples

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Embodiment 1

[0018] Example 1 screening can improve the strain of walnut drought resistance

[0019] The rhizosphere soil of relatively dry trees was collected, and bacterial isolates were isolated from various rhizosphere soils by gradient dilution method, and finally 359 strains of bacterial isolates were obtained. The isolated bacterial isolates were numbered after purification. Pick a single colony and transfer it to LB medium for storage on a slant. Four bacterial strains with better growth-promoting effect were obtained by the method of keeping green and increasing the weight of cotyledons of radish. Through further pot experiments of walnuts under different drought stresses, a bacterium suitable for application in arid habitats was finally determined, and its number was L90, and its characteristics were as follows:

[0020] Colony characteristics and cell morphology: L90 formed glossy white colonies after being cultured on LB plates for 24 hours, round and opaque; the surface was ...

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Abstract

The invention discloses a strain of bacillus cereus which is preserved in China General Microbiology Center of Committee for Culture Collection of Microorganisms since 31st December, 2014, and the preservation number is CGMCC No. 7069. The bacillus cereus L90 provided by the invention is capable of improving the drought resistant capability of juglans regia. Experiment research shows that after the bacillus cereus provided by the invention is inoculated to the surround of juglans regia roots and juglans regia is stressed by drought for a certain time, juglans regia is substantially improved in bacterial community structure diversity in rhizosphere soil compared with juglans regia inoculated with common growth-promoting bacteria, the leaf relative water content and the water utilization efficiency are improved, and the drought resistance of the plant is enhanced. Therefore, the bacillus cereus provided by the invention or a bacterium preparation by taking bacillus cereus as a raw material can be used as an inoculation agent and applied to drought environment, and the bacillus cereus provided by the invention helps to provides an excellent bacterial strain resource for improving the drought resistance of juglans regia.

Description

technical field [0001] The invention relates to a strain of Bacillus cereus and its application in improving plant drought resistance. Background technique [0002] The current global environmental changes have caused and will continue to cause a redistribution of global hydrothermal patterns, which will have a serious impact on plants worldwide. According to statistics, the area of ​​arid and semi-arid regions in the world accounts for about 35% of the land area. The arid and semi-arid regions in my country have a vast territory, involving 12 provinces, municipalities and autonomous regions in the northeast, northwest and north China, accounting for about 52.5% of the total area of ​​the country. %. The resulting land desertification has made my country one of the most serious desertification hazards in the world. The arid and barren mountainous areas are the most severely affected by drought. The survival rate of afforestation in these areas is low, and soil erosion is s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C12N1/20C09K17/00C12R1/085
Inventor 马海林邢尚军刘方春杜振宇马丙尧
Owner SHANDONG FOREST SCI RES INST
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