Identification of an ATP-Binding Cassette Transporter Implicated in Aluminum Tolerance in Wild Soybean ().

The toxicity of aluminum (Al) in acidic soil limits global crop yield. The ATP-binding cassette (ABC) transporter-like gene superfamily has functions and structures related to transportation, so it responds to aluminum stress in plants. In this study, one half-size ABC transporter gene was isolated from wild soybeans () and designated . By real-time qPCR, was identified as not specifically expressed in tissues. Phenotype identification of the overexpressed transgenic lines showed increased tolerance to aluminum. Furthermore, transgenic plants exhibited some resistance to aluminum treatment by ion translocation or changing root components. This work on the identified the molecular function, which provided useful information for understanding the gene function of the ABC family and the development of new aluminum-tolerant soybean germplasm.