Elucidation of Arabidopsis cyclic nucleotide-gated channels contributing to heavy metal accumulation in plants
Ryoung Shin
RIKEN Center for Sustainable Resource Science, Japan
: J Plant Physiol Pathol
Abstract
Non-essential heavy metals and toxic concentrations of essential metals negatively affect various metabolic and cellular processes. Although only few studies have performed the regulation of heavy metals transport in plants, heavy metal ions are known to enter cells in a non-selective manner. Plant cyclic nucleotide-gated channels (CNGCs), a type of Ca2+-permeable-channel, have been suggested to be involved in transporting both essential and toxic heavy metal ions. To determine the candidates responsible for heavy metal ion transport, a series of Arabidopsis CNGC mutants were examined for their response to Pb2+ and Cd2+ ions. Results, based on the analysis of primary root length and ion content analysis verified that at least four AtCNGCs play roles in Pb2+ and/or Cd2+ accumulation in plants. These findings provide functional evidence which support the roles of these AtCNGCs in the uptake and transport of Pb2+ or Cd2+ ion in plants.
Biography
Ryoung Shin has completed his PhD at the age of 28 years from Korea University and Postdoctoral Studies from Donald Danforth Plant Science Center, USA. She is the Unit leader of RIKEN Center for Sustainable Resource Science. She has published more than 45 papers in reputed journals and has 7 patents and has been served the editorial board member of three journals including Scientific Reports.
E-mail: ryoung.shin@riken.jp
