Dr. Yumei Dai
Chengdu Institute of Biology, Chinese Academy of Sciences
Address: No.93, Keyuan Nan Road, Chengdu, 610041, China.

Research Interests

Environmental Microbiology, Microbial Ecology, Food Safety, Bioengineering.


Ph.D in Microbiology
Shenyang Institute of Applies Ecology, Chinese Academy of Sciences

Professional Experience

2012-today Associate professor, Chengdu Institute of Biology, Chinese Academy of Sciences

2007-2011 Postdoctoral Research Associate, University of Massachusetts, Amherst, United States

2004-2007 Postdoctoral Research Associate, Institute of Plant Physiology & Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences

Teaching Experience
2011 Lectured on Food Safety-Antimicrobial Resistance & Typing Methods, Louisiana State University, United States.
2009 Lectured on Food Pathogen Salmonella, University of Massachusetts, Amherst, United States.

Honors & Distinctions

Visiting Scientist Scholarship (to the University of Exeter, United Kingdom), China Scholarship Council (2018). 

Interdisciplinary Postdoctoral Fellowship, Center of Excellence in Apoptosis Research, Pioneer Valley Life Sciences Institute, United States (2010).


Dai Y. *, Yang F., Zhang L., Xu Z., Fan X., Tian Y., Wang T. * (2020) Wheat-associated microbiota and their correlation with stripe rust reaction. Journal of Applied Microbiology, 28(2):544-555. (*corresponding Author)

Yang F., Zhang L., Wang D., Liu Y., Zhou M., Zhang G., Dai Y.*, Luo Y.* (2019) Isolation and identification of secondary metabolites of endophytic bacteria Pedobacter chitinilyticus CM134L-2T from wheat. Chinese Journal of Applied and Environmental Biology, published on line.

Zhang L., Gan L., Xu Z., Yang F., Li Y., Fan X., Liu X., Tian Y.*, Dai Y.* (2018) Pedobacter chitinilyticus sp. nov., a chitin-degrading bacterium isolated from the leaf tissues of wheat, International Journal of Systematic and Evolutionary Microbiology, 68(12):3713-3719.

Dai Y.*, Zhang L., Li Y., Li Y., Deng X., Wang T., Yang F., Tian Y., Li N., Zhou X., Liu X., Li W. (2018) Characterization of Trichococcus paludicola sp. nov., and Trichococcus alkaliphilus sp. nov. isolated from Qinghai-Tibetan plateau, China, by phenotypic and genomic analyses, International Journal of Systematic and Evolutionary Microbiology, 68: 99-105.

Li Y., Zhang L., Liu, L., Tian Y., Liu X., Li W., Dai Y.*(2017) Paludicola psychrotolerans gen. nov., sp. nov., a novel psychrotolerant chitinolytic anaerobe of the family Ruminococcaceae, International Journal of Systematic and Evolutionary Microbiology, 67: 4100-4103.

Dai Y*., Yan Z., Jia L., Zhang S., Gao L., Wei X., Mei Z., Liu X.(2016) The composition, localization and function of low-temperature-adapted microbial communities involved in methanogenic degradations of cellulose and chitin from Qinghai-Tibetan Plateau wetland soils. Journal of Applied Microbiology, 121:163-176.    (*corresponding Author)

Yao, M., Rui, J., Li, J., Dai, Y., Bai, Y., Heděnec, P., Wang, J., Zhang, S., Pei, K., Liu, C., Wang, Y., Zhili, H., Frouz, J. and Li, X. (2014) Rate-specific responses of prokaryotic diversity and structure to nitrogen deposition in the Leymus chinensis steppe. Soil Biology and Biochemistry 79: 81-90.

Dai Y., Toley B., Swoffold C., Forbes N.(2013)Construction of an inducible cell-communication system that amplifies Salmonella gene expression in tumor tissue. Biotechnology and Bioengineering, 110:1769-1781

Fan Y., Dai Y., Cheng Q., Zhang G., Zhang D., Fang P., Wu H., Bai L., Deng Z., Qin Z. (2012) A self-ligation method for PCR-sequencing the telomeres of Streptomyces and Mycobacterium linear replicons. Journal of Microbiological Methods, 90: 105-107

Dai Y., Yang Y., Fan Y., Shen M., Zhou M, Cai X. and Qin Z. (2012) Abundance of plasmids among Streptomyces strains from the Tibet plateau of China. Microbiology China, 39: 1636-1641

Zhou M., Dai Y., Zhong L., Qin Z. (2012) Replication and conjugation of Streptomyces small plasmid pDYM4. 3k. Acta Microbiologica Sinica, 52: 916-920

Dai Y., Normand M., Weiss J., Peleg M. (2010) Modeling of efficacy of triplet antimicrobial combinations: yeast suppression by lauric arginate, cinnamic acid, and sodium benzoate or potassium sorbate as a case study. Journal of Food Protection, 73: 515-523

Dai Y., McLandsborough L., Weiss J., Peleg M. (2010) Concentration and application order effects of sodium benzoate and eugenol mixtures on the growth inhibition of Saccharomyces cerevisiae and Zygosaccharomyces bailiiJournal of Food Science, 75: M482-488

Yang Y., Dai Y., Chen Z., Qin Z (2010) Cloning and analysis of the telomeres of five Streptomyces linear plasmids. Acta Microbiologica Sinica, 58(8):1008-103

Dai Y., Zhou M. and Qin Z. (2008) Detection of linear and circular plasmids among actinomycetes isolated from acid and alkaline soils. Acta Microbiologica Sinica, 48(2): 244-246

Xiong Z., Tang X., Dai Y., Zhang C., Zhang Z. and Xu L.(2006) Genetic Diversity of Frankia Strains in Alnus nepalensis Nodules in Yunnan Revealed by rep-PCR. Chinese Journal of Applied Ecology, 12(5): 623-627

Dai Y., Zhang C., Xiong Z and Zhang Z. (2005) Correlations between the ages of Alnus host species and the genetic diversities of associated endosymbiotic Frankia strains from nodules. Science in China Ser. C Life Sciences, 48 Supp. I: 76-81.

Dai Y., He X., Zhang C. and Zhang Z. (2004) Characterization of genetic diversity of Frankia strains in nodules of Alnus nepalensis (D. Don) from the Hengduan Mountains on the basis of PCR-RFLP analysis of the nifD-nifK IGS. Plant and Soil, 267: 207-212.

Dai Y., Cao J., Tang X. and Zhang C. (2004) Diversity of Frankia in nodules of Alnus Nepalensis in Gaoligong Mountains revealed by IGS PCR-RFLP analysis. Chinese Journal of Applied Ecology, 15(2): 186-190.

Dai Y., Han S., Tang X. and Zhang C. (2003) Genetic diversity of Frankia in nodules of Alnus in Changbai Mountain. Chinese Journal of Northeast Forestry University, 13(6): 6-8.

Tang X., Dai Y., Xiong Z. and Cao J. (2004) Genetic diversity analysis of Frankia strains in nodules of three Alnus species from Changbai Mountain by REP fingerprinting. Chinese Journal of Ecology, 23(4):68-71

Tang X., Dai Y., Xiong Z., Zhang Z. and Zhang C. (2003) Effect of natural stress on genetic diversity of Frankia in nodules of Alnus. Chinese Journal of Applied Ecology, 14(10): 1734 -1746.


Dai Y., Li Y., Yang F., Zhang L., Liu X. (2019) New chitinase P1724 and its application. Patent  No: 201710933796.X

Dai Y., Zhang L., Xu Z., Fan X. (2018) A wheat endophyte and its application. Patent Application No: 201811094464.8

Funded projects

Discovery and function study of microbial cold-adapted chitinases resources in Qinghai-Tibet Plateau. National Natural Science Foundation of China. 

Developing chitinase-related strategies to prevent wheat fungal pathogen infection. Chengdu Science and Technology Huimin project.

Chitinolytic microbes in the Qinghai-Tibetan plateau and their antagonistic function to the plant pathogenic fungi. The Open Fund of the Key Laboratory of Environmental and Applied Microbiology, Chinese Academy of Science. 

Development and application of low-temperature-adapted microbial cellulase and chitinase. Science and Technology Project of Sichuan Province.

Enrichment of psychrophilic biogas-producing bacteria in the Tibet-Qinghai Plateau fens by solid surface adhesion, and the mechanism of their methane productivity at low temperatures. National Natural Science Foundation of China. 

Developing multi-functional microbial inocula to improve the performance of biogas fermentation at low temperatures. West Light Foundation of the Chinese Academy of Sciences. 

Amplified, persistent drug production in Salmonella enterica serovar Typhimurium as a delivery system for breast cancer therapy. 2010. Rays of Hope, United States. (co-PI) 


Li Y., Dai Y.*, A novel psychrotolerant chitinolytic anaerobe isolated from Qinghai-Tibetan Plateau and its molecular mechanisms in degradation of chitin. 2nd Global Soil Biodiversity Conference. Nanjing, People’s Republic of China, 2017, (oral).

Forbes N., Dai Y., Swoffold C., Toley B., Inducible Cell Communication Amplifies Salmonella Gene Expression In Tumor Tissue. AIChE Annual Meeting, Pittsburgh, PA, 2012, (oral).

Toley B., Dai Y., Forbes N. Micron-Scale Oxygen Delivery Prevents the Onset of Necrosis in Tumors. AACR Metastasis and the Tumor Microenvironment, Philadelphia, PA, 2010, (poster). 

Dai Y., Forbes N. Chemotherapy Molecule Delivered by Tumor-Targeted Salmonella enteric serovar Typhimurium under the Control of Integrated Modular AND Gate. AACR Molecular Targets and Cancer Therapeutics. Boston, MA, 2009, (poster). 

Dai Y., McLandsborough L, Weiss J, and Peleg M. Quantifying the Concentration and Application Order Effect of Sodium Benzoate and Eugenol Mixtures on the Growth Suppression and Retardation of Two Yeasts. 2009 IFT Annual Meeting & Food Expo. Anaheim, LA, 2009, (poster). 

Dai Y., Peleg M. and Weiss J. Modeling of Activity of Triple Combinations of Antimicrobials, Using Lauric Arginate, Cinnamic Acid, and Sodium Benzoate or Potassium Sorbate as a Case Study. 95th Annual meeting International Association for Food Protection. Columbus, OH, 2008. 

Dai Y., Peleg M. and Weiss J. Antimicrobial Activity of Triple Combinations of Lauric Arginate, Cinnamic Acid, and Sodium Benzoate or Potassium Sorbate against Spoilage Yeasts. 2008 IFT Annual Meeting & Food Expo. New Orleans, LA, 2008, (poster). 

Dai Y. and Weiss J. Antimicrobial Activity of Combinations of Saponin and Potassium Sorbate against Spoilage Yeasts. IFT Annual Meeting & Food Expo. New Orleans, LA 2008, (poster). 

Dai Y. Xiong Z. and Zhang C.G. Ecology and Co-Evolution between Alnus Species and Their Microsymbiont Frankia. Annual meeting of biological nitrogen fixation project supported by National Key Basic Research Support Foundation of China. Xiamen, People’s Republic of China, 2006. 

Dai Y. and Zhang C.G. Genetic Diversity of Frankia Strains in the Nodules from Alnus Species. Annual meeting of biological nitrogen fixation project supported by the National Key Basic Research Support Foundation of China. Beijing, People’s Republic of China, 2004.