Proceedings of the National Academy of Sciences of the United States of America

About the PNAS Member Editor
Name Schroeder, Julian I.
Location University of California, San Diego
Primary Field Plant Biology
Secondary Field Plant, Soil and Microbial Sciences
 Election Citation
Schroeder pioneered methods for studying plant ion channels. He identified and characterized the major classes of ion channels and described in molecular terms how they regulate closing and opening of stomata. He provided the first detailed description of an ABA signaling pathway and contributed to characterization of the ABA receptor.
 Research Interests
Julian Schroeder's research interests focus on elucidating signal transduction mechanisms and pathways that initiate and mediate resistance to environmental abiotic stresses in plants linked to water. Water-linked stresses have substantial negative impacts and reduce plant growth. His research has pioneered the characterization of plant ion channels and their regulation mechanisms with a focus on abiotic stress responses. Schroeder's research is elucidating the mechanisms mediating gas exchange regulation in plants by stomatal pores through which plants lose over 90% of their water via transpiration. Within this research Schroeder's laboratory has identified mechanisms, including ion channel regulation mechanisms mediating signaling by the plant stress hormone abscisic acid (ABA). His laboratory is characterizing signal transduction mechanisms in stomatal guard cells in response to drought-induced abscisic acid production and stomatal signaling in response to the continuing rise in atmospheric CO2. In other research Schroeder's laboratory identified the plant HKT transporters and showed how AtHKT1 in Arabidopsis protects plants from salinity stress. HKT transporter quantitative trait loci are being used by plant scientists and breeders to enhance salt tolerance of major staple crops, including rice and wheat. In other research Schroeder's laboratory has identified key mechanisms by which plants protect themselves from and accumulate heavy metals, which are important for future engineering of plants for bioremediation of contaminated soils and waters.

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