Gene Details:

• MSU gene ID: LOC_Os02g19820
• RAPdb gene ID: Os02g0301100
• Gene Symbol: OsSWEET4
• Genome: MSU7 ,  IRGSP-1.0
• Species: Oryza sativa

Functional Descriptions:

• Mutants of both maize ZmSWEET4c and its rice ortholog OsSWEET4 are defective in seed filling, indicating that a lack of hexose transport at the BETL impairs further transfer of sugars imported from the maternal phloem.
• Genetic analyses showed that GFD1 might control grain-filling duration through OsSWEET4, adjust grain size with OsSUT2 and synergistically modulate grain number per panicle with both OsSUT2 and OsSWEET4.
• GFD1 protein was partially localized on the plasma membrane and in the Golgi apparatus, and was finally verified to interact with two sugar transporters, OsSWEET4 and OsSUT2.

Function-related keywords:

• seed ,  phloem ,  grain ,  grain-size ,  panicle ,  grain-number ,  sugar ,  plasma-membrane ,  grain-filling ,  sugar-transport

Literature:

• Seed filling in domesticated maize and rice depends on SWEET-mediated hexose transport .  DOI:  10.1038/ng.3422 ;  PMID:  26523777
• A heat stress responsive NAC transcription factor heterodimer plays key roles in rice grain filling .  DOI:  10.1093/jxb/erab027 ;  PMID:  33476364
• MATE transporter GFD1 cooperates with sugar transporters, mediates carbohydrate partitioning and controls grain-filling duration, grain size and number in rice .  DOI:  10.1111/pbi.13976 ;  PMID:  36495424

Related News:

Gene Resources:

• NCBI ID:
• UniProt accessions:

Sequences: