A strain of Bacillus siamensis DG-39, microbial agent and its application in inhibiting early bolting of Angelica sinensis

The Bacillus Siam DG-39 bacteria agent improves the endogenous melatonin of Angelica, reduces the abscisic acid and auxin content, promotes nitrogen circulation, and lowers the photoperiod gene expression, which solves the problem of Bacillus Siam failure to inhibit the early bolting of Angelica in the existing technology, and achieves efficient inhibition of bolting and quality improvement.

CN119979397BActive Publication Date: 2025-07-25GANSU ACAD OF SCI INST OF BIOLOGY
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Patent Information

Application Number
CN202510180350.9
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-02-19
Publication Date
2025-07-25
Estimated Expiration
2045-02-19

AI Technical Summary

Technical Problem

There is no effective Bacillus Siam in the prior art for inhibiting early bolting of Angelica, and pesticides and plant growth regulators have a negative impact on Angelica quality while reducing bolting rate.

Method used

Bacillus Siam DG-39 bacteria agent is used to increase the endogenous melatonin content of angelica, reduce the content of abscisic acid, auxin and gibberellin, promote nitrogen circulation and utilization, lower the expression of light cycle-related genes, inhibit early bolting of Angelica, and promote nitrogen absorption and utilization through nitrogen fixation, phosphorus-free and ferrite-producing properties, and eliminate phenoamines to promote bolting substances.

Benefits of technology

Significantly inhibit the early bolting of Angelica, improve the quality of Angelica, reduce the bolting rate, promote nitrogen circulation and utilization, change physiological and biochemical state, increase the content of endogenous melatonin, reduce hormone content, and regulate photoperiod-related gene expression.

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Abstract

The present invention belongs to the technical field of biological agents, and specifically relates to a Bacillus siamensis DG-39, a bacterial agent thereof, and their application in inhibiting the early bolting of Angelica sinensis. The Bacillus siamensis DG-39 and the bacterial agent containing Bacillus siamensis DG-39 of the present invention mainly inhibit the early bolting of Angelica sinensis by increasing the endogenous melatonin content of Angelica sinensis, decreasing the contents of abscisic acid, auxin and gibberellin, promoting the circulation and utilization of nitrogen, effectively changing the physiological and biochemical state of Angelica sinensis, and down-regulating the expression of photoperiod-related genes. At the same time, the Bacillus siamensis DG-39 bacterial agent of the present invention has the characteristics of nitrogen fixation, non-phosphate solubilization and siderophore production, and can promote the absorption and utilization of nitrogen by plants to avoid the promoting effect of excessive phosphorus on bolting; meanwhile, Bacillus siamensis DG-39 has strong laccase activity and can remove phenolic amine substances that promote bolting, which helps to reduce the bolting rate.
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