Gene Details:

• MSU gene ID: LOC_Os02g10800
• RAPdb gene ID: Os02g0202400
• Gene Symbol: OsBT1-1 OsBT1
• Genome: MSU7 ,  IRGSP-1.0
• Species: Oryza sativa

Functional Descriptions:

• The OsBT1 mutant showed a white-core endosperm and a significantly lower grain weight than the wild-type.
• The formation and development of compound starch granules in OsBT1 was obviously defective: the amyloplast was disintegrated at early developmental stages and the starch granules were disperse and not compound in the endosperm cells in the centre region of OsBT1 seeds.
• OsBT1 encodes an ADP-glucose transporter involved in starch synthesis and compound granule formation in rice endosperm.
• Furthermore, the expression of starch synthesis related genes was also altered in the OsBT1 mutant.
• These findings indicate that OsBT1 plays an important role in starch synthesis and the formation of compound starch granules.
• Map-based cloning of OsBT1 indicated that it encodes a putatively ADP-glucose transporter.
• Rice OsBT1 regulates seed dormancy through the glycometabolism pathway.

Function-related keywords:

• grain ,  development ,  starch ,  map-based-cloning ,  endosperm ,  transporter ,  grain-weight ,  seed ,  dormancy

Literature:

• Expression profiling of starch metabolism-related plastidic translocator genes in rice .  DOI:  10.1007/s00425-005-0128-5 ;  PMID:  16362329
• Analysis of the Rice ADP-Glucose Transporter (OsBT1) Indicates the Presence of Regulatory Processes in the Amyloplast Stroma That Control ADP-Glucose Flux into Starch .  DOI:  10.1104/pp.15.01911 ;  PMID:  26754668
• OsBT1 encodes an ADP-glucose transporter involved in starch synthesis and compound granule formation in rice endosperm .  DOI:  10.1038/srep40124 ;  PMID:  28054650
• Rice OsBT1 regulates seed dormancy through the glycometabolism pathway .  DOI:  10.1016/j.plaphy.2020.03.055 ;  PMID:  32289640
• Bin-based genome-wide association studies reveal superior alleles for improvement of appearance quality using a 4-way MAGIC population in rice .  DOI:  10.1016/j.jare.2020.08.001 ;  PMID:  33364055

Related News:

Gene Resources:

• NCBI ID: NM_001052765
• UniProt accessions:

Sequences: