Gene Details:

• Gene ID: HORVU.MOREX.r3.4HG0403620
• Gene Symbol: HvSUT1
• Gene Name: sucrose transporter 1
• Genome: MorexV3_pseudomolecules_assembly
• Species: Hordeum vulgare

Functional Descriptions:

• Down-regulation of the sucrose transporters HvSUT1 and HvSUT2 affects sucrose homeostasis along its delivery path in barley grains.
• Expression of HvSUT1 and HvSUT2 overlap temporally and spatially, suggesting concerted functions to regulate sucrose homeostasis. Using HvSUT2-RNAi plants, we found that grains were also deficient in HvSUT1 expression and seemingly sucrose-limited during mid-to-late grain filling.
• It was found that RNAi-mediated repression of HvSUT2 also resulted in down-regulation of HvSUT1 and led to accumulation of sucrose along the sucrose delivery route in the nucellar projection, the endosperm transfer cells, and the starchy endosperm, although grains become apparently sucrose-limited.
• Localization studies indicate that barley (Hordeum vulgare) sucrose transporter HvSUT1 functions in sucrose uptake into seeds during grain filling.
• The results suggest that both HvSUT2 and HvSUT1 control sucrose homeostasis during grain filling. Their deficiency affects maturation and certain biosynthetic pathways, and initiates sugar starvation-induced salvage of resources.

Function-related keywords:

• grain ,  grain-filling ,  homeostasis ,  transporter ,  endosperm ,  sugar ,  sucrose ,  sugar-homeostasis ,  sucrose-transporter

Literature:

• Down-regulation of the sucrose transporters HvSUT1 and HvSUT2 affects sucrose homeostasis along its delivery path in barley grains.   DOI:  10.1093/jxb/erx266 ;  PMID:  28981782
• Analysis of the transport activity of barley sucrose transporter HvSUT1.   DOI:  10.1093/pcp/pci182 ;  PMID:  16091371

Related News:

Gene Resources:

• NCBI ID: 123449566
• UniProt accessions: Q4A1H2

Orthologs:

Sequences: