Professor
Department of Biological Sciences
📍 Administrative Building - First Floor
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Research Interests
Genetics, Genomics, Systems Biology and Synthetic Biology of Plant Growth Promoting Bacterium
Research Interests:
1. Understanding the role of alternative sigma factors, anti-sigma factors and anti-anti sigma factors in the biology of Azospirillum brasilense
2. Deciphering biochemical nature and biosynthetic pathway of carotenoids of Azospirllum brasilense
3. Understanding and engineering carbon source utilization in Azospirillum brasilense for improved root colonization and plant growth promotion
4. Engineering carotenoid overproducing strains of Azospirillum brasilense for the heterologous production of high-value phytochemicals
2025 - 2027 : Vice President (Science Promotion), Indian National Science Academy (INSA), New Delhi
2025 - 2027 : Member, Council, Indian Academy of Science (IASc), Bengaluru
Since 2024 : Director, IISER Mohali
2022 - 2024 : Convener, Sectional Committee, Plant Sciences, Indian Academy of Science, Bengaluru
2023 - 2025 : Convener/ Member, Sectional Committee, General Biology, Indian National Science Academy
2021 - 2024 : Chairman, Plant Science Research Committee, CSIR, New Delhi
2021 - 2024 : Member, Court, University of Hyderabad
2021 - 2024 : Member, Governing Body, National Institute of Plant Genome Research (NIPGR)
2019 - 2022 : Member, Governing Body, NIPER, Raebareli
2018 - 2019 : Member, Council, National Academy of Sciences India (NASI), Prayagraj
2017 - 2019 : Member, Research Council, Agharkar Research Institute (DST), Pune
2017 - 2019 : Member, Research Council, CSIR-NIIST, Thiruvanantpuram
2016 - 2019 : Member, INSA Sectional Committee IX: Microbiology & Immunology
2016 : Member, CSIR Governing Body and CSIR Society
2019 - 2014 : Director, Institute of Science, Banaras Hindu University
2019 - 2023 : Coordinator, DST-SATHI, Banaras Hindu University
2019 - 2024 : Coordinator, BIRAC-BioNEST, Banaras Hindu University
2014 - 2019 : Director, Central Institute of Medicinal and Aromatic Plants (CSIR-CIMAP)
2017 - 2029 : Mission Director, CSIR Aroma Mission
2013 - 2014 : Coordinator, DBT-BHU Interdisciplinary School of Life Sciences, BHU, Varanasi
2008 - 2011 : Coordinator, Centre for Bioinformatics, BHU
2007 - 2010 : Coordinator, School of Biotechnology, BHU
2004 - 2018 : Professor, School of Biotechnology, Faculty of Science, BHU
2018 - 2014 : Senior Professor, School of Biotechnology, Faculty of Science, BHU
2002 - 2004 : Professor & Head, Dept of Biotechnology, D. D. U. University, Gorakhpur
1988 - 1990 : DAAD Post-Doctoral Fellow, Institute of Genetics, University of Bayreuth, Germany
1980 - 1984 : Ph. D. Department of Botany, Banaras Hindu University, Varanasi
1978 - 1980 : M.Sc. Department of Botany, Banaras Hindu University, Varanasi
1976 - 1978 : B.Sc. (Bot, Zool, Chem), Faculty of Science, Banaras Hindu University
2023 : Fulbright-Nehru International Education Administrators Seminar
2020 : J C Bose National Fellowship (SERB)
2020 : Fellow, Indian Academy of Science (IASc), Bangalore
2019 : UGC-BSR Mid-Career Award (UGC New Delhi)
2017 : NASI Lecture Award in the Field of Biodiversity (NASI, Allahabad)
2017 : Prof B. D. Tilak Memorial Lecture Award (INSA, New Delhi)
2016 : Prof R. N. Tandon Memorial Lecture Award (NASI, Allahabad)
2016 : CSIR Technology Award in Life Science
2015 : Fellow, Indian National Science Academy (INSA), New Delhi
2012 : Fellow, National Academy of Sciences India (NASI), Allahabad
2009 : Fellow, National Academy of Agricultural Sciences (NAAS), New Delhi
2006 : Fellow, Association of Microbiologists of India (AMI), New Delhi
Rai, S., Singh, V. S., Gupta, P. and Tripathi, A. K. (2024) Identification and functional characterization of a fructose-inducible phosphotransferase system in Azospirillum brasilense Sp7. Applied and Environmental Microbiology (ASM) doi: https://doi.org/10.1128/aem.
Singh, D. N., Pandey, P., Singh, V. S., and Tripathi, A. K. (2024) Evidence for high-risk pollutants and emerging microbial contaminants at two major bathing ghats of the river Ganga using high-resolution mass spectrometry and metagenomics. Gene doi: 10.1016/j.gene.2024.148991
Tiwari, N. and Tripathi, A. K. (2024) Biosynthesis of carotenoids in Azospirillum brasilense Cd is mediated via squalene (C30) route. Biochemical Biophysical Research Communication. doi: 10.1016/j.bbrc.2024.150154.
Singh, V. S., Dubey, B. K., Rai, S., Singh S. P. and Tripathi, A. K (2022) Engineering D-glucose utilization in Azospirillum brasilense Sp7 promotes rice root colonization. Applied Microbiology & Biotechnology 106: 7891-7903 doi: 10.1007 s00253-022-12250-0.
Pandey, P., Dubey, A.P., Mishra, S., Singh, C., Singh, V. S. and Tripathi, A. K (2022) β-lactam resistance in Azospirillum baldaniorum Sp245 is mediated by lytic transglycosylase and β-lactamase, and regulated by a cascade of RpoE7→RpoH3 sigma factors. Journal of Bacteriology (ASM) doi.org/10.1128/jb.00010-22
Singh, V. S., Dubey, B. K., Pandey, P., Rai, S. and Tripathi, A. K (2021) Co-metabolism of ethanol in Azospirillum brasilense Sp7 is mediated by fructose and glycerol and regulated negatively by an alternative sigma factor RpoH2. Journal of Bacteriology (ASM) DOI:10.1128/JB.00269-21
Mishra, S., Pandey, P., Dubey, A. P, Zehra, A., Chanotiya, C. S., Tripathi, A. K. Mishra, M. N. (2020) Engineering a carotenoid-overproducing strain of Azospirillum brasilense for heterologous production of geraniol and amorphadiene Applied Environmental Microbiology (ASM) DOI: 10.1128/AEM.00414-20
Dubey, A. P., Pandey, P., Singh, V. S., Mishra, M. N., Singh, S., Mishra, R. and Tripathi, A. K. (2020) An ECF41 family σ factor controls motility and biogenesis of lateral flagella in Azospirillum brasilense Sp245. Journal of Bacteriology (ASM) DOI: 10.1128/JB.00231-20
Singh, V.S., Tripathi, P., Pandey, P., Singh, D.N., Dubey. B., Singh. C., Singh, S., Pandey, R., Tripathi, A.K. (2019) Dicarboxylate transporters of Azospirillum brasilense Sp7 play important role in the colonization of finger millet (Eleusine coracana) roots. Molecular Plant Microbe Interaction (APS) 32: 828-840
Rai, A.K., Singh, S., Dwivedi, S.K., Srivastava, A., Pandey, P., Kumar S., Singh, B. N. and Tripathi A. K. (2018) Expression of catalases in Azospirillum brasilense Sp7 is regulated by a network of OxyR and two RpoH paralogs including a regulatory cascade of RpoE1 and RpoH5. Applied Environmental Microbiology (ASM) doi: 10.1128/AEM.01787-18
Singh, V. S., Dubey, A. P., Gupta, A., Singh 1 ,S., Singh, B. N. and Tripathi , A. K. (2017) Regulation of a glycerol induced quinoprotein alcohol dehydrogenase by σ 54 and a LuxR-type regulator in Azospirillum brasilense Sp7 Journal of Bacteriology (ASM) doi:10.1128/JB.00035-17
Srivastava, A., Brilisauer , K., Rai, A. K., Ballal, A., Forchhammer, K. and Tripathi, A. K. (2016) Downregulation of the alternative sigma factor SigJ confers a photoprotective phenotype to Anabaena PCC 7120. Plant and Cell Physiology (JSPP) 58: 287-297
Rai, A.K., Dubey, A.P.,Kumar, S., Mishra, M. N., Dutta, D., Singh, B.N. and Tripathi, A. K. (2016) Carotenoid biosynthetic pathways are regulated by a network of multiple cascades of alternative sigma factors in Azospirillum brasilense Sp7. Journal of Bacteriology (ASM) 198:2955-2964
Gupta, N., Gupta,A., Kumar,S., Mishra,R., Singh, C. and Tripathi, A. K. (2014) Cross-talk between cognate and non-cognate RpoE sigma factors and Zn 2+- binding anti-sigma factors regulates photooxidative stress response in Azospirillum brasilense Anti-oxidants and Redox Signalling 20:42-59