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Updated: Aug 4, 2025

Assaying Proteasomal Degradation in a Cell-free System in Plants
Published on: March 26, 2014
Role of ubiquitination in arsenic tolerance in plants
Jie Zhang1, Robert Wysocki2, Fangbai Li3
1Research Center for Environmental Membrane Biology and Department of Horticulture, Foshan University, Foshan, Guangdong 528000, China.
Abstract:
Arsenic (As) is harmful to all living organisms, including humans and plants. To limit As uptake and avoid its toxicity, plants employ systems that regulate the uptake of As from the soil and its translocation from roots to grains. Ubiquitination, a highly conserved post-translational modification (PTM) in all eukaryotes, plays crucial roles in modulating As detoxification mechanisms in budding yeast (Saccharomyces cerevisiae), but little is known about its roles in As tolerance and transport in plants. In this opinion article we review recent findings and suggest that ubiquitination plays a crucial role in regulating As transport in plants. We also propose ideas for future research to explore the importance of ubiquitination for enhancing As tolerance in crops.
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