Prof.  Rajiv  Dutta
Shobhit University, Gangoh, Saharanpur,  India

Title: Calcium influx through peizo-channels at pollen tube tip membrane

Abstract:

The growing pollen tube needs higher calcium concentration inside pollen tube near tip. This result a continuous influx of calcium from the pollen tube tip region is essential for its polarized growth. The pulsating growth of pollen tube oscillates with the calcium and potassium ions transport though the pollen tube membrane. The various kind of spontaneous and pressure sensitive ion channels have been identified from the pollen grain membranes. These ion channels were specifically for calcium and potassium transportation. The spontaneous potassium channel at pollen grain having conductance of 67 and 72 pS at different external potassium concentrations and reversal potential was found to be -40mV and -120 mV, respectively. Whereas, the pressure activated potassium channel on pollen grain membrane is found to be activated when membrane was provided pressure of 10 kPa. The conductance of these channels was found to be 33 pS. The pressure activated voltage gated calcium channels with conductance of 15 pS were also found on pollen grain membrane. Both these stretched activated channels were blocked in presence of gadolinium chloride (GdCl2) and 1000 fold diluted crude venom from Grammostola spatulata. It was also observed that these membrane based channels were activated by positive as well as negative pressure exerted on the membrane.

Biography:

Prof. Dr. Rajiv Dutta a prolific researcher, an outstanding academician, and an able administrator is a Fellow of the Royal Society of Biology, London, and the Institute of Physics, London. Currently working as Dean (Research) and School of Bioengineering and Sciences (SBES) at Shobhit University, Gangoh, Dist.- Saharanpur, UP. He has earned M. Tech. in Biotechnology and Engineering from the Department of Chemical Engineering of IIT, Kharagpur, and a Ph.D. from BITS, Pilani and Post Graduate Diploma in Educational Administration. He was also a Research Faculty at the Department of Biological Sciences at Purdue University, West Lafayette, IN. He had received several awards including JCI Outstanding Young Person of India, ISBEM Dr. Ramesh Gulrajani Memorial Award 2006; Outstanding Researcher Award-2011 at Ion Channel Retreat, Vancouver; International Academic Excellence Award- 2021 by IIOR; Indo-Asian Education Excellence Award-2022 by IMRF, CV Raman Award-2023 for Outstanding Research by Institute of Researchers and the A P J Abdul Kalam Award-2023 by the Association of Researchers & Academicians (India). He is an Editorial Board Member or Reviewer for several journals including the American Journal of Plant Physiology, International Journal of Engineering, Physiology and Molecular Biology of Plants, Plant Cell Biotechnology and Molecular Biology, Journal of Eco-friendly Agriculture, Biomedical and Biotechnology Research Journal (BBRJ), Journal of Biotech Research (JBR), Research Journal of Pharmacy & Technology etc.