Dr. Pranjib K. Chakrabarty has served ICAR in various capacities as Scientist (Plant Pathology), Principal Scientist (Biotechnology) and Head, (Division of Crop Improvement) at the Central Institute for Cotton Research (CICR) Nagpur and Assistant Director General (Plant Protection & Biosafety) at ICAR, Krishi Bhavan, New Delhi. Presently he is working as Member, ASRB, DARE,  Krishi Anusandhan Bhawan- I, New Delhi. First class throughout his academic career, Dr Chakrabarty visited USA four times and did pioneering research on molecular basis of plant-pathogen interaction and signal transduction of disease resistance for five years. He did his post-doctoral research at the University of Florida, Gainesville and at the University of Missouri-Columbia in Columbia, USA. He also visited 25 countries in Australia, Africa, Asia, Americas and Europe as visiting Scientists and presented number of research and policy papers related to Pant Protection. 
Key Research Achievements included a patent on ready-to-use PCR detection kit for detection of Xanthomonas malvacearum - a seed borne pathogen of cotton. He has developed molecular diagnostic tools for detection of all the major pathogens of cotton. He also developed CAPS Marker to differentiate Ramularia areola strains infecting diploid cotton from tetraploid cotton and a race 18-specific RFLP marker in Xanthomonas malvacearum. He has developed 6 gene constructs including 5 RNAi and a chitinase, (chi1) gene constructs for cotton transformation. Using them Dr Chakrabarty developed transgenic diploid cotton with enhanced expression of a unique class I chitinase gene showing delayed pathogenesis of foliar fungal pathogens of cotton and RNAi-mediated transgenic cotton tolerant to cotton leaf curl virus. 
He is recipient of a number of Academic and Professional awards and Fellowships, including KPV Menon Gold Medal 2005; 2015, MJ Narasimhan Research Award; Prof EJ Butler memorial award, Indian Mycological Society; INSA Visiting Scientist Fellowship; DBT Overseas Fellowship; UNDP Fellowship for Doctoral Research; Merit Fellowship for M.Sc (Agriculture), HPKVV, Palampur, H.P., India, 1980-1982. He is Fellow of a number of prestigious Professional Societies including, National Academy of Agricultural Sciences, Maharashtra Academy of Sciences; Phytopathological Society of India, Indian Society of Mycology and Plant Pathology; Mycological Society of India, etc. He is also an adjunct faculty of the University of Florida, USA. 
He published 73 gene sequences in GenBank. He is life member of 5 professional Societies and published 76 research papers in National and international Journals of repute, written 18 book chapters, 53 conference papers. He guided 12 MSc and PhD students.