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Plants are often unable to take into account the increase in yield and resistance to stress in the field farming environment.This experiment was applied to crops in the general environment and food safety microbes (Generally recognizedized as Safe (GRAS) microbial lactic acid bacteria Lactobacillus paracasei fermentation broth (No-2).And to detect its effect on adversity resistance, number of rhizosphere microbial population, pathogen resistance and crop growth.The results showed that No-2 could increase the activity of peroxidase (POD), the accumulation of hydrogen peroxide (H2O2), and increase the ion permeability on the cell membrane. The expression of LeOPR3, LeCOI1 and LeJAZ1 and LeJAZ1 and SA-related resistance marker gene LePR1 were detected by heat-No2, and the JA-related resistance marker LeOPR3, LeCOI1 and LeJAZ1 and SA-related resistance marker gene LePR1. In addition, No-2 can directly inhibit the growth and spore germination ability of pathogens such as Colletotrichum gloeosporioides, and enhance the resistance of tomato to C. gloeosporioides.The ability to enhance the tolerance of tomato seedlings to UV-C, high temperature and water stress can also help the roots of tomato roots to maintain the number of Bacillus thuringiensis (HS1) and B. amyloliquefaciens (HS3) populations.In field trials, it was found that No-2 alone could promote tomato plant height and leaf number, while Heat-No2 could only increase plant height. It is also possible to increase the number of rice, the length of rice stem and the number of rice stem, the number of flowers and fruits of yang melon and the yield of Annona fruit.However, the effect of No-2 on the field disease of Annona lucidum was not obvious, but it was not only possible to reduce the disease after mixing B. thuringiensis (HS1) and B. amyloliquefaciens (HS3) and calcium Maintain the ability to increase the yield of Sakya fruit.The results of the comprehensive appellations show that the lactic acid bacteria fermentation broth No-2 can induce the resistance gene expression by increasing the content of H2O2 and POD activity in the plant, increase the number of root microbial populations, and so on to protect the plant and raise the crop The dual goal of production.
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