Two Half-Size ATP-Binding Cassette Transporters Are Implicated in Aluminum Tolerance in Soybean.

ABSTRACT: Aluminum (Al) toxicity severely restricts plant production in acidic soils. ATP-binding cassette (ABC) transporters participate in plant tolerance to various environmental stresses. However, ABC transporters implicated in soybean Al tolerance are still rare. Here, we functionally characterized two half-size ABC transporters (GmABCB48 and GmABCB52) in soybean. Expression analysis showed that GmABCB48 and GmABCB52 were induced only in the roots, especially in the root tips. Both GmABCB48 and GmABCB52 were localized at the plasma membrane. Overexpression of GmABCB48 or GmABCB52 in Arabidopsis reduced Al accumulation in roots and enhanced Al tolerance. However, expression of GmABCB48 or GmABCB52 in yeast cells did not affect Al uptake. Furthermo

SUBMITTER: Huang J 

PROVIDER: S-EPMC11476899 | biostudies-literature | 2024 Sep

REPOSITORIES: biostudies-literature