Low-temperature-resistant growth-promoting synthetic bacterial community and application thereof

CN122326435APending Publication Date: 2026-07-03LANZHOU UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
LANZHOU UNIV
Filing Date
2026-04-17
Publication Date
2026-07-03

AI Technical Summary

Technical Problem

Leguminous forage grasses in high-altitude and cold regions lack highly efficient low-temperature resistant growth-promoting strains. Conventional growth-promoting bacteria show a significant decrease in growth and activity under low-temperature conditions, which affects forage grass growth.

Method used

A low-temperature resistant growth-promoting microbial community, including Rhizobium wenxiniae and Pseudomonas endophytica, was used to promote the growth of arrowhead peas in low-temperature environments through root irrigation or seed inoculation. This increased the content of JA and ABA, decreased the content of salicylic acid and cytokinin, and enhanced the cold resistance of the plants.

Benefits of technology

It significantly alleviates low-temperature stress, promotes the growth of arrowhead pea, increases plant biomass and photosynthetic parameters, enhances cold resistance, and has a synergistic effect superior to inoculation alone, providing a highly efficient low-temperature growth-promoting effect.

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Abstract

This application provides a low-temperature resistant, growth-promoting synthetic microbial community and its application. The synthetic microbial community includes rhizobia and pseudomonads, and the rhizobia are taxonomically named *Rhizobia* (…). Rhizobium Wenxinia The strain number is DTYPGPB01, and the preservation number is CGMCC No. 37201; the taxonomic name of the *Pseudomonas* species is *Pseudomonas* (…). Pseudomonas endophyticus The strain number is DTYPGPB02, and the preservation number is CGMCC No. 37202. This application demonstrates that root drenching inoculation significantly increased the contents of JA and ABA in the aboveground parts and roots. P <0.05%, while reducing the content of salicylic acid and cytokinin ( P <0.05), the same effect was also found in seed soaking inoculation, indicating that strains DTYPGPB01 and DTYPGPB02 have a synergistic effect in promoting growth at low temperatures and can significantly alleviate low temperature stress.
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