During his post-doctoral years in the US, Chattopadhyay worked on the regulatory switch of seedling development in plant and propounded the theory that the first transcription factor of light signaling pathways which interacted with COP1 was HY5. Later, he studied the role of light in plant growth and development and its molecular basis. The team led by him was successful in synthesizing Z-box binding transcription factors such as ZBF1, ZBF2 and ZBF3 and regulatory proteins like SHW1 and EHY5, all of which have significant role in plant development from seedling stage to flowering. They have also been successful in demonstrating the correlation between Z-box binding factors and other transcription factors namely HY5, HYH, COP1 and SPA1. Their work has resulted in the generation of ZBF1 over-expresser transgenic tomato plants and investigations are on regarding the biotechnological potential of the findings in crop development. His studies have been documented by way of a number of articles and the online article repository of the Indian Academy of Sciences has listed 22 of them. He has mentored several doctoral scholars and has delivered invited or plenary speeches at seminars and conferences.
Awards and honors
Chattopadhyay, who holds the J. C. Bose National Fellowship of the Science and Engineering Research Board, received the Merit Award of Kalyani University in 1986 for academic excellence. The Department of Biotechnology of the Government of India awarded him the National Bioscience Award for Career Development, one of the highest Indian science awards in 2005. The National Academy of Sciences, India elected him as a fellow in 2006 and he became a member of Guha Research Conference in 2007, the same year as he received the Ramanna fellowship of the Department of Science and Technology. He received the elected fellowships of the two academies in 2009, those of the Indian Academy of Sciences and the Indian National Science Academy. A year later, the West Bengal Academy of Science and Technology elected him as a fellow.
Selected bibliography
Maurya JP, Sethi V, Gangappa SN, Gupta N, Chattopadhyay S. Interaction of MYC2 and GBF1 results in functional antagonism in blue light-mediated Arabidopsis seedling development. Plant J. 2015 Aug;83:439-50. https://doi.org/10.1111/tpj.12899
Abbas N, Maurya JP, Senapati D, Gangappa SN, Chattopadhyay S. Arabidopsis CAM7 and HY5 physically interact and directly bind to the HY5 promoter to regulate its expression and thereby promote photomorphogenesis. Plant Cell. 2014 Mar;26:1036-52. https://doi.org/10.1105/tpc.113.122515