翻译：内生菌是一种定居在植物组织和器官中细菌或真菌5。有益的内生细菌可以参与植物各项生命活动具有调控植物激素水平及代谢、溶磷、抑菌甚至调控植物内部微生物群落结构和组成的多种功能6。植物内生细菌可以调控植物激素水平影响宿主健康。乙烯在调节植物生长时需求量少过量的乙烯会影响植物生长甚至死亡。多种内生细菌具有产ACC脱氨酶的功能可将乙烯合成前体ACC物质分解为α-丁酮酸和氨调控乙烯含量维持植物正常发育7

Endophytes are bacteria or fungi that inhabit plant tissues and organs. Beneficial endophytic bacteria can participate in various plant life activities, including regulating plant hormone levels and metabolism, solubilizing phosphorus, inhibiting bacteria, and even regulating the structure and composition of the plant's internal microbial community. Endophytic bacteria can regulate plant hormone levels and affect host health. Ethylene requires a small amount for regulating plant growth, and excessive ethylene can affect plant growth and even cause death. Many endophytic bacteria have the function of producing ACC deaminase, which can break down the precursor ACC substance of ethylene into α-ketobutyrate and ammonia, regulate ethylene content, and maintain normal plant development. Among them, Pseudomonas is widely distributed and accounts for up to 34% in soil bacteria. Pseudomonas can produce ACC deaminase, organic acids, and other products, improve soil microenvironment, promote root growth, increase yield, and have the advantage of strong colonization ability. Ma Hui and others found that Pseudomonas can affect the microbial community structure inside broad bean plants and increase the relative abundance of related microorganisms. Yang Yaru and others found that fluorescent Pseudomonas has good control effects on root-knot nematodes in peppers, and the yield is increased by more than 150%. It also has a significant effect on fruit type, VC, and soluble protein content. Zhao Qian and others found that acidophilic Korean Pseudomonas can regulate microbial diversity in continuous cropping soil and significantly increase the content of available phosphorus and potassium. Han Xiaobin found that P. gessardii has the ability to produce IAA and dissolve organic phosphorus, and it has outstanding control effects on tobacco black shank disease. Fei Shixuan and others isolated ACC deaminase-producing P. putida and P. fluorescens from jujube soil. Both strains have the ability to fix nitrogen, solubilize phosphorus, and produce IAA. Through re-inoculation experiments, it was shown that both strains can promote the growth and development of jujube plants. The above research results indicate that Pseudomonas can regulate soil microbial diversity, improve soil nutrient status, and increase crop yield and quality