Gene Details:

• MSU gene ID: LOC_Os04g21950
• RAPdb gene ID: Os04g0287400
• Gene Symbol: OsWRKY51
• Genome: MSU7 ,  IRGSP-1.0
• Species: Oryza sativa

Functional Descriptions:

• To address the cross-talk of GA and ABA signaling, we studied two rice WRKY genes (OsWRKY51 and OsWRKY71) that are ABA-inducible and GA-repressible in embryos and aleurone cells.
• In contrast, the third non-DNA-binding mutant enhances GA induction of Amy32b-GUS, by interfering with the binding of the wild-type OsWRKY71 or the OsWRKY71/OsWRKY51 repressing complex.
• Transgenic lines overexpressing OsWRKY51 showed growth retardation compared to WT plants.
• OsWRKY51 functions as a positive transcriptional regulator in defense signaling against Xanthomonas oryzae pv.
• To examine the role of OsWRKY51 in the defense response of rice, we generated OsWRKY51 overexpressing and underexpressing transgenic rice plants.
• Based on these results, we suggest that OsWRKY51 is a positive transcriptional regulator of defense signaling and has direct DNA binding ability to the promoter of OsPR10a, although it is reported to be a negative regulator in GA signaling.
• In contrast, transgenic lines underexpressing OsWRKY51 by RNA interference showed similar plant height with WT plants.
• Transient expression of OsWRKY51-green fluorescent protein fusion protein in rice protoplasts revealed that OsWRKY51 was localized in the nucleus.
• In the first transcriptional regulatory cascade, OsWRKY47 acted downstream of OsWRKY10 whereas OsWRKY51 acted upstream.
• Using transient dual-luciferase and yeast one-hybrid assays, IPA1 was found to directly activate the expression of OsWRKY51 and OsWRKY71, which would interfere with the binding affinity of GA-induced transcription factor OsGAMYB to inhibit the expression of -amylase genes.

Function-related keywords:

• ga ,  ABA ,  growth ,  defense ,  defense-response ,  height ,  plant-height ,  nucleus ,  GA ,  transcriptional-regulator ,  transcription-factor

Literature:

• Interactions of two abscisic-acid induced WRKY genes in repressing gibberellin signaling in aleurone cells .  DOI:  10.1111/j.1365-313X.2006.02694.x ;  PMID:  16623886
• The WRKY Gene Family in Rice (Oryza sativa) .  DOI:  10.1111/j.1744-7909.2007.00504.x
• Annotations and functional analyses of the rice WRKY gene superfamily reveal positive and negative regulators of abscisic acid signaling in aleurone cells .  DOI:  10.1104/pp.104.054312 ;  PMID:  15618416
• OsWRKY51, a rice transcription factor, functions as a positive regulator in defense response against Xanthomonas oryzae pv. oryzae .  DOI:  10.1007/s00299-016-2012-0 ;  PMID:  27300023
• WRKY10 transcriptional regulatory cascades in rice are involved in basal defense and Xa1-mediated resistance .  DOI:  10.1093/jxb/eraa135 ;  PMID:  32227093
• IPA1 Negatively Regulates Early Rice Seedling Development by Interfering with Starch Metabolism via the GA and WRKY Pathways .  DOI:  10.3390/ijms22126605 ;  PMID:  34203082

Related News:

Gene Resources:

• NCBI ID: BK005053
• UniProt accessions:

Sequences: