Gene Details:

• MSU gene ID: LOC_Os07g42490
• RAPdb gene ID: Os07g0616800
• Gene Symbol: RSUS3 SUS3 OsSUS3
• Genome: MSU7 ,  IRGSP-1.0
• Species: Oryza sativa

Functional Descriptions:

• Rice sucrose synthase 3 (RSUS3) is expressed predominantly in rice seed endosperm and is thought to play an important role in starch filling during the milky stage of rice seed ripening.
• It appears that RSus2 is a house-keeping gene, RSUS3 is highly specific to the grain, and the expression of RSus1 shows a tendency to complement that of RSUS3.
• SUS3 and SUS4 were predominantly expressed in the caryopsis, indicating potential roles in carbon allocation within the filling grain.
• In addition, we transformed the ‘Habataki’ SUS3 gene into ‘Nipponbare’, and the transformants obtained high-temperature tolerance.
• Therefore, we conclude that the causal gene underlying the QTL Apq1 is the thermo-responsive SUS3 allele, and the increase in SUS3 expression under high-temperature condition during ripening leads to high-temperature tolerance in rice.
• Among these, the temporal expression pattern of sucrose synthase 3 (SUS3) corresponded well with the high temperature-sensitive period during ripening, and expression of the ‘Habataki’ allele of SUS3 was increased under high-temperature condition.
• Distinct cellulose and callose accumulation for enhanced bioethanol production and biotic stress resistance in OsSUS3 transgenic rice.

Function-related keywords:

• seed ,  starch ,  endosperm ,  grain ,  tolerance ,  sucrose ,  resistance ,  stress ,  biotic-stress ,  cellulose ,  bioethanol ,  bioethanol-production

Literature:

• An expression analysis profile for the entire sucrose synthase gene family in rice .  DOI:  10.1016/j.plantsci.2008.02.009
• Complete structures of three rice sucrose synthase isogenes and differential regulation of their expressions .  DOI:  10.1271/bbb.60.233 ;  PMID:  9063969
• Single nucleotide polymorphisms and haplotype diversity in rice sucrose synthase 3 .  DOI:  10.1093/jhered/esr094 ;  PMID:  21914668
• AtCesA8-driven OsSUS3 expression leads to largely enhanced biomass saccharification and lodging resistance by distinctively altering lignocellulose features in rice .  DOI:  10.1186/s13068-017-0911-0 ;  PMID:  28932262
• Thermo-responsive allele of sucrose synthase 3 (Sus3) provides high-temperature tolerance during the ripening stage in rice (Oryza sativa L.) .  DOI:  10.1270/jsbbs.18007 ;  PMID:  30100800
• Distinct cellulose and callose accumulation for enhanced bioethanol production and biotic stress resistance in OsSUS3 transgenic rice .  DOI:  10.1016/j.carbpol.2019.115448 ;  PMID:  31952577

Related News:

Gene Resources:

• NCBI ID: AK100306
• UniProt accessions:

Sequences: