Gene Details:

• MSU gene ID: LOC_Os04g08740
• RAPdb gene ID: Os04g0169100
• Gene Symbol: ETR2 Os-ERL1 OsETR2
• Genome: MSU7 ,  IRGSP-1.0
• Species: Oryza sativa

Functional Descriptions:

• The effective panicles and seed-setting rate were reduced in the ETR2-overexpressing plants, while thousand-seed weight was substantially enhanced in both the ETR2-RNAi plants and the ETR2 mutant compared with controls.
• Here, we characterized a subfamily II ethylene receptor, ETHYLENE RESPONSE2 (ETR2), in rice (Oryza sativa).
• Overexpression of ETR2 in transgenic rice plants reduced ethylene sensitivity and delayed floral transition.
• Conversely, RNA interference (RNAi) plants exhibited early flowering and the ETR2 T-DNA insertion mutant ETR2 showed enhanced ethylene sensitivity and early flowering.
• The ethylene receptor ETR2 delays floral transition and affects starch accumulation in rice.
• Cloning of a cDNA encoding an ETR2-like protein (Os-ERL1) from deep water rice (Oryza sativa L.) and increase in its mRNA level by submergence, ethylene, and gibberellin treatments.
• The GIGANTEA and TERMINAL FLOWER1/CENTRORADIALIS homolog (RCN1) that cause delayed flowering were upregulated in ETR2-overexpressing plants but downregulated in the ETR2 mutant.
• Thus, ETR2 may delay flowering and cause starch accumulation in stems by regulating downstream genes.
• Furthermore, the expression of two genes for ethylene signal transduction, ETR2 and EIN3, increased in these RNAi transgenic plants, whereas the expression of ERF3 was suppressed.
• A cDNA from deep water rice treated with ethylene, encoding an ethylene receptor homologous to Arabidopsis thaliana ETR2 and EIN4, was isolated using differential display and RACE techniques.
• The cDNA (2880 bp), corresponding to the Os-ERL1 gene (Oryza sativa ETHYLENE RESPONSE 2 like 1; GenBank accession number AB107219), contained an open reading frame of 2289 bp coding for 763 amino acids.
• The Os-ERL1 gene was up-regulated by flooding, and by treatment with ethylene and gibberellin.
• Starch granules accumulated in the internodes of the ETR2-overexpressing plants, but not in the ETR2 mutant.
• Furthermore, instead of the constitutive expression profile of OsERS1, OsETR2 is differentially expressed in seedlings of light/dark-grown conditions, submergence or exogenous ethylene treatments.
• Our results and others support the notion that OsERS1 and OsETR2 could have different roles during rice plant submergence.
• The Differentiated Localized Rice Ethylene Receptors OsERS1 and OsETR2 and their Potential Role during Submergence.
• OsERS1 and OsETR2 are major ethylene receptors in rice that have been reported to have different regulatory functions.
• Base on the results, we suggested that OsERS1 could be localized to plasma membranes, whereas OsETR2 could be localized to the endoplasmic reticulum.

Function-related keywords:

• panicle ,  ethylene ,  gibberellin ,  flower ,  stem ,  submergence ,  seed ,  starch ,  floral ,  seedlings ,  plasma-membrane

Literature:

• Identification and characterization of a novel water-deficit-suppressed gene OsARD encoding an aci-reductone-dioxygenase-like protein in rice .  DOI:  10.1016/j.gene.2005.07.017 ;  PMID:  16169685
• Cloning of a cDNA encoding an ETR2-like protein (Os-ERL1) from deep water rice (Oryza sativa L.) and increase in its mRNA level by submergence, ethylene, and gibberellin treatments .  DOI:  10.1093/jxb/erh110 ;  PMID:  15020633
• The ethylene receptor ETR2 delays floral transition and affects starch accumulation in rice .  DOI:  10.1105/tpc.108.065391 ;  PMID:  19417056
• The Differentiated Localized Rice Ethylene Receptors OsERS1 and OsETR2 and their Potential Role during Submergence .  DOI:  10.1080/15592324.2017.1356532 ;  PMID:  28758833

Related News:

Gene Resources:

• NCBI ID: AF420319
• UniProt accessions:

Sequences: