Gene Details:

• MSU gene ID: LOC_Os02g49370
• RAPdb gene ID: Os02g0725700
• Gene Symbol: OsHAP3E LEC1 OsLEC1
• Genome: MSU7 ,  IRGSP-1.0
• Species: Oryza sativa

Functional Descriptions:

• The OsHAP3E-overexpressing plants showed various abnormal morphologies both in their vegetative and reproductive phases.
• The OsHAP3E-overexpressing plants were dwarf with erected leaves and similar to brassinosteroid mutants in the vegetative phase.
• Altogether, our loss-of-function and gain-of-function analyses suggest that OsHAP3E plays important pleiotropic roles in vegetative and reproductive development or basic cellular processes in rice.
• Aberrant vegetative and reproductive development by overexpression and lethality by silencing of OsHAP3E in rice.
• These phenotypes indicate association of OsHAP3E with determination of floral meristem identity.
• OsLEC1/OsHAP3E participates in the determination of meristem identity in both vegetative and reproductive developments of rice.
• OsLEC1 mutant seeds lost desiccation tolerance and triggered embryo greening at the early development stage.
• Our findings suggested that OsLEC1 acts as not only a central regulator of seed maturation but also an inhibitor of embryo greening during rice seed development.
• This study would provide new understanding for the OsLEC1 regulatory mechanisms on photosynthesis in the monocot seed development.
• Transcriptome analysis demonstrated that OsLEC1 mutation altered diverse hormonal pathways and stress response in seed maturation, and promoted a series of photosynthesis-related genes.
• Further, genome-wide identification of OsLEC1-binding sites demonstrated that OsLEC1 bound to genes involved in photosynthesis, photomorphogenesis, as well as abscisic acid (ABA) and gibberellin (GA) pathways, involved in seed maturation.

Function-related keywords:

• vegetative ,  dwarf ,  meristem ,  erect ,  floral-meristem ,  reproductive ,  brassinosteroid ,  floral ,  development ,  seed ,  photosynthesis ,  tolerance ,  gibberellin ,  stress ,  abscisic-acid ,  Gibberellin ,  seed-development ,  stress-response ,  embryo

Literature:

• Aberrant vegetative and reproductive development by overexpression and lethality by silencing of OsHAP3E in rice .  DOI:  10.1016/j.plantsci.2011.04.009 ;  PMID:  21683874
• Identification, characterization and interaction of HAP family genes in rice .  DOI:  10.1007/s00438-007-0312-3 ;  PMID:  18193457
• OsLEC1/OsHAP3E participates in the determination of meristem identity in both vegetative and reproductive developments of rice .  DOI:  10.1111/jipb.12025 ;  PMID:  23230849
• Rice LEAFY COTYLEDON1 Hinders Embryo Greening During the Seed Development .  DOI:  10.3389/fpls.2022.887980 ;  PMID:  35620685

Related News:

Gene Resources:

• NCBI ID: AB288036
• UniProt accessions:

Sequences: