Gene Details:

• MSU gene ID: LOC_Os08g04270
• RAPdb gene ID: Os08g0137100
• Gene Symbol: OsFIE2
• Genome: MSU7 ,  IRGSP-1.0
• Species: Oryza sativa

Functional Descriptions:

• Both the OsFIE2 and OsEZ11 genes are strongly expressed in leaf and stem compared to other tissues, including root, anther, ovary, and ovule.
• Involvement of rice Polycomb protein OsFIE2 in plant growth and seed size.
• Our results suggest that OsFIE2-polycomb complex positively regulates rice endosperm development and grain filling via a mechanism highly different from that in Arabidopsis.
• Genetic studies showed that a reduction of OsFIE2 expression led to smaller seeds, partially filled seeds, and partial loss of seed dormancy.
• Polycomb group gene OsFIE2 regulates rice (Oryza sativa) seed development and grain filling via a mechanism distinct from Arabidopsis.
• The H3K27me3 modification and gene expression in a key helix-loop-helix transcription factor is shown to be regulated by OsFIE2.
• Importantly, they produced bigger seed than the wild type, indicating that OsFIE2 may play an important role in seed size.
• Gene expression and proteomics analyses found that the starch synthesis rate limiting step enzyme and multiple storage proteins are down-regulated in OsFIE2 reduction lines.
• We further examined whether OsFIE2 interacted with OsEZ1 using a yeast two-hybrid system.
• In this study, the function of the rice fertilization-independent endosperm gene OsFIE2, which expresses a protein homologous to the Arabidopsis Polycomb protein FIE, was characterized.
• Polycomb Protein OsFIE2 Affects Plant Height and Grain Yield in Rice.
• Taken together, these results indicate that OsFIE2 plays an important role in the regulation of plant height and grain yield in rice.
• OsFIE2 is expressed in most tissues and the coded protein localizes in both nucleus and cytoplasm.
• The CRISPR/Cas9-derived mutant OsFIE2 exhibited impaired cellularization of the endosperm, which suggested that OsFIE2 is indispensable for early seed development as a positive regulator of cellularization.

Function-related keywords:

• anther ,  growth ,  endosperm ,  seed ,  transcription-factor ,  root ,  grain-filling ,  starch ,  grain ,  stem ,  leaf ,  seed-development ,  seed-size ,  dormancy ,  grain-yield ,  yield ,  cytoplasm ,  height ,  plant-height ,  nucleus ,  development

Literature:

• Involvement of rice Polycomb protein OsFIE2 in plant growth and seed size .  DOI:  10.1007/s11816-012-0229-0
• Expression, imprinting, and evolution of rice homologs of the polycomb group genes .  DOI:  10.1093/mp/ssp036 ;  PMID:  19825651
• Polycomb group gene OsFIE2 regulates rice (Oryza sativa) seed development and grain filling via a mechanism distinct from Arabidopsis .  DOI:  10.1371/journal.pgen.1003322 ;  PMID:  23505380
• Polycomb Protein OsFIE2 Affects Plant Height and Grain Yield in Rice .  DOI:  10.1371/journal.pone.0164748 ;  PMID:  27764161
• Functional divergence of two duplicated Fertilization Independent Endosperm genes in rice with respect to seed development .  DOI:  10.1111/tpj.14911 ;  PMID:  33463824

Related News:

Gene Resources:

• NCBI ID: AK111761
• UniProt accessions:

Sequences: