Scientists reveal the molecular mechanism of salt mustard adapting to high-salt and low-phosphorus habitats

The researchers compared the similarities and differences between salt mustard and Arabidopsis phosphorus transporter (PHT) gene families in terms of gene copy number, gene structure, promoter elements, and expression patterns, and performed functional studies on the corresponding genes and promoters.

The study found that there are 7 tandem repeat genes encoding PHT1;3 in the salt mustard genome, and at least 6 genes are involved in phosphorus absorption.

Through further analysis, the researchers found that both EsPHT1;9 and AtPHT1;9 are involved in the transport of phosphorus from roots to stems, and under low phosphorus and salt stress, the total phosphorus and potassium content of the aerial parts are significantly positively correlated, suggesting phosphorus and potassium There is a co-transport mechanism.

The research results show that EsPHT1;3 gene duplication and the induced expression of multiple PHT genes under salt stress are important mechanisms for salt mustard to adapt to high-salt and low-phosphorus habitats, which provides theoretical support for the development and cultivation of salt-tolerant and low-phosphorus crop varieties And genetic resources.

Related paper information: org/10.