WRKY6 Antibody
Description
Definition and Target Specificity
The WRKY6 antibody is an immunological reagent designed to detect and quantify the WRKY6 protein, a member of the WRKY transcription factor family involved in stress responses, phosphate regulation, and hormone signaling . Key features include:
Functional Studies
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Phosphate Regulation: The antibody confirmed WRKY6's role in repressing PHO1 expression under low-phosphate conditions via ChIP assays, showing direct binding to W-box motifs in the PHO1 promoter .
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ABA Signaling: WRKY6 antibody usage revealed its role in ABA hypersensitivity during seed germination by regulating RAV1 expression and downstream genes (ABI3, ABI4, ABI5) .
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Arsenate Resistance: Demonstrated WRKY6-mediated repression of arsenate/phosphate transporters (PHT1;1) under arsenate stress, limiting arsenic uptake .
Technical Validation
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Specificity: Anti-WRKY6 antibody (AS111778, Agrisera) showed no cross-reactivity in wrky6 null mutants (wrky6-1, wrky6-2) and detected induced WRKY6 protein levels under ABA treatment .
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Sensitivity: Detected WRKY6 degradation via 26S proteasome under low-phosphate conditions, linking protein stability to environmental stress .
Mechanistic Insights
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DNA Binding: WRKY6 binds to W-box motifs in target promoters (e.g., PHO1, RAV1), validated by EMSA and ChIP-qPCR .
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Post-Translational Regulation: Low-phosphate conditions trigger 26S proteasome-mediated WRKY6 degradation, relieving PHO1 repression .
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Crosstalk with WRKY42: Both WRKY6 and WRKY42 redundantly regulate PHO1, but WRKY6 dominates ABA-dependent responses .
Phenotypic Correlations
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WRKY6-overexpressing lines exhibited stunted growth under low phosphate, mimicking pho1 mutants .
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wrky6 mutants showed ABA insensitivity, while overexpression lines displayed hypersensitivity .
Limitations and Future Directions
Product Specs
Target Background
- Positive Regulation of Senescence and Chlorophyll Degradation: WRKY6 positively regulates dark-induced senescence and chlorophyll degradation; RGA physically interacts with WRKY6. PMID: 29574486
- Restriction of Piriformospora indica Infection and Phosphate-Induced Root Development: WRKY6 restricts Piriformospora indica infection and phosphate-induced root development. PMID: 26718529
- Role in Abscisic Acid Signaling: The Arabidopsis WRKY6 transcription factor plays a significant role in abscisic acid signaling by directly down-regulating RAV1 expression. PMID: 26829043
- Downstream Effector of E-2-hexenal: WRKY40 and WRKY6 function downstream of the green leaf volatile E-2-hexenal, mediating its inhibitory effect on root elongation. PMID: 26243404
- Arsenate Response and Transposon Activation: WRKY6 is an arsenate-responsive transcription factor that regulates arsenate/phosphate transporter gene expression and restricts arsenate-induced transposon activation. PMID: 23922208
- Low Boron Conditions and Root Growth: WRKY6 is a low-boron-induced transcription factor essential for normal root growth under low-boron conditions. PMID: 20059736
