Azamal Husen served as Professor and Head of the Department of Biology, University of Gondar, Ethiopia and is a Foreign Delegate at Wolaita Sodo University, Wolaita, Ethiopia. Previously, he was a Visiting Faculty of the Forest Research Institute, and the Doon College of Agriculture and Forest at Dehra Dun, India. Husen’s research and teaching experience of 20 years includes biogenic nanomaterial fabrication and application, plant responses to nanomaterials, plant adaptation to harsh environments at the physiological, biochemical, and molecular levels, herbal medicine, and clonal propagation for improvement of tree species. Dr Husen contributed to R&D projects of World Bank, ICAR, ICFRE, JBIC etc. He has >250 publications . He is Series Co-Editor of ‘Plant Biology, Sustainability and Climate Change’, Elsevier. Professor Altaf Ahmad is working in Plant Biotechnology in the Department of Botany, Aligarh Muslim University, Aligarh, India. Dr. Ahmad has 22 years of research experience and has more than 150 publications. Dr. Ahmad handled several research projects funded by various agencies like BBSRS-UK, DST, DBT, CSIR, UGC, CCRUM, ICAR, and INSA. He was a Visiting Scientist at the Virginia Polytechnic and State University, USA University of Freiburg, University of Aberdeen, and the University of Cologne. Based on his research contribution, Dr. Ahmad has been honored with the INSA Medal for Young Scientist (2003) and Professor LSS Kumar Memorial Award (2003) of Indian National Science Academy, Young Scientist Award (2005) of Council of Science & Technology, Govt. of Uttar Pradesh, and elected as Associate of National Academy of Agricultural Sciences