Gene Details:

• Gene ID: Zm00001eb288410
• Gene Symbol: CST1 ZmSWEET1b ZmSWEET13
• Gene Name: sugars will eventually be exported transporter1b
• Genome: Zm-B73-REFERENCE-NAM-5.0
• Species: Zea mays

Functional Descriptions:

• Map-based cloning of CST1 followed by confirmation with the clustered regularly interspaced short palindromic repeats (CRISPR)/ CRISPR associated protein 9 system identified the causal mutation in a Clade I Sugars Will Eventually be Exported Transporters (SWEET) family gene, which leads to the E81K mutation in the CST1 protein.
• CST1 encodes a functional glucose transporter expressed in subsidiary cells, and the E81K mutation strongly impairs the oligomerization and glucose transporter activity of CST1.
• A Subsidiary Cell-Localized Glucose Transporter Promotes Stomatal Conductance and Photosynthesis.
• CST1 expression is induced by carbon starvation and suppressed by photoassimilate accumulation.
• CST1 as a missing link in the feedback-regulation of stomatal movement and photosynthesis by photoassimilates in maize.
• Mutation of CST1 results in reduced stomatal opening, carbon starvation, and early senescence in leaves, suggesting that CST1 functions as a positive regulator of stomatal opening.
• ZmSWEET1b encodes a functional glucose transporter expressed in subsidiary cells; mutants result in reduced stomatal opening positive regulator of salt tolerance.

Function-related keywords:

• senescence ,  map-based-cloning ,  salt ,  photosynthesis ,  tolerance ,  salt-tolerance ,  transporter ,  stomatal

Literature:

• A Subsidiary Cell-Localized Glucose Transporter Promotes Stomatal Conductance and Photosynthesis.   DOI:  10.1105/tpc.18.00736 ;  PMID:  30996077

Related News:

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Gene Resources:

• NCBI ID: LOC100281296
• UniProt accessions: A0A1D6M4M7

Sequences:

Source: Genetic information comes from the article