Secondary metabolites (SMs) are crucial for plant survival and adaptation and play multiple roles in mediating ecological interactions, such as defense and stress tolerance. Specialized transporters relocate SMs from synthesis sites to defense tissues or storage organs. The spatiotemporal distribution of defense-related SMs is a key determinant of plant fitness. However, the accumulation of anti-nutritional SMs in crop seeds or fruits may pose health risks to humans and livestock. Recent advances have highlighted the significant role of SM transporters in optimizing the allocation of metabolites. This review explores the transport mechanisms for both defense and anti-nutritional SMs, focusing on long-distance transporters that regulate source-sink dynamics and their potential implications in agricultural biotechnology. We highlight innovative approaches to manipulating transporter activities, ranging from multi-omics integration to precision engineering, and discuss how these tools can be used to design crops with enhanced defense capacity, increased levels of beneficial compounds, and more palatable seeds and fruits. We explore the technologies and frameworks for the discovery and characterization of long-distance transporters of SMs for crop improvement. Transporter-focused frameworks offer a promising solution to global agricultural challenges and present exciting opportunities for advancing crop improvement in the context of global food supply.
Details
Title
Transport of secondary metabolites in plants: Mechanistic insights and transporter engineering for crop improvement
Authors/Creators
Chunsheng Xiao - Murdoch University
Gaofeng Zhou - Murdoch University
Tianhua He - Murdoch University
Chengdao Li - Government of Western Australia
Publication Details
Plant communications, Vol.6(12), 101536
Publisher
Elsevier Inc. on behalf of CAS Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, and Chinese Society for Plant Biology.