A plant growth retardant
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Paclobutrazol

Item No. 18864

Product Insert (PDF)Safety Data Sheet (SDS) (PDF)
Technical Information
Formal Name
(αR,βR)-rel-β-[(4-chlorophenyl)methyl]-α-(1,1-dimethylethyl)-1H-1,2,4-triazole-1-ethanol
CAS Number
76738-62-0
Synonyms
  • PBZ
Molecular Formula
C15H20ClN3O
Formula Weight
293.8
Purity
≥95%
Formulation (Request formulation change)
A crystalline solid
Solubility(Learn about Variance in Solubility)
DMF: 10 mg/mlDMSO: 10 mg/mlEthanol: 10 mg/mlEthanol:PBS(pH 7.2) (1:1): 0.5 mg/ml
λmax
221 nm
SMILES
ClC1=CC=C(C[C@]([C@@H](O)C(C)(C)C)([H])N2N=CN=C2)C=C1
InChi Code
InChI=1S/C15H20ClN3O/c1-15(2,3)14(20)13(19-10-17-9-18-19)8-11-4-6-12(16)7-5-11/h4-7,9-10,13-14,20H,8H2,1-3H3/t13-,14+/m0/s1
InChi Key
RMOGWMIKYWRTKW-UONOGXRCSA-N
Shipping & Storage Information
Storage
-20°C
Shipping
Wet ice in continental US; may vary elsewhere
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    100 mg

    $36

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    Product Description

    Paclobutrazol (PBZ) is a triazole-containing plant growth retardant that is known to inhibit the biosynthesis of gibberellins.1,2 It also has antifungal activities.3 PBZ, which is transported acropetally in plants, can also suppress the synthesis of abscisic acid and induce chilling tolerance in plants.1,4,5 PBZ is typically used to support research on the role of gibberellins in plant biology.6,7 Formulations containing paclobutrazol have been used in the cotrol of fungi and the regulation of plant growth in agriculture.

    WARNING This product is not for human or veterinary use.

    References & Product Citations
    Product Description References

    1. Wang, S.Y., Sun, T., and Faust, M. Translocation of paclobutrazol, a gibberellin biosynthesis inhibitor, in apple seedlings. Plant Physiol. 82(1), 11-14 (1986).

    2. Rademacher, W. Growth retardants: Effects on gibberellin biosynthesis and other metabolic pathways. Annu. Rev. Plant Physiol. Plant Mol. Biol. 51, 501-531 (2000).

    3. Storey, G.K., and Gardner, W.A. Sensitivity of the entomogenous fungus Beauveria bassiana to selected plant growth regulators and spray additives. Appl. Environ. Microbiol. 52(1), 1-3 (2016).

    4. Norman, S.M., Bennett, R.D., Poling, S.M., et al. Paclobutrazol inhibits abscisic acid biosynthesis in Cercospora rosicola. Plant Physiol. 80(1), 122-125 (1986).

    5. Pinhero, R.G., Rao, M.V., Paliyath, G., et al. Changes in activities of antioxidant enzymes and their relationship to genetic and paclobutrazol-induced chilling tolerance of maize seedlings. Plant Physiol. 114(2), 695-704 (2016).

    6. Wang, G.L., Que, F., Xu, Z.S., et al. Exogenous gibberellin altered morphology, anatomic and transcriptional regulatory networks of hormones in carrot root and shoot. BMC Plant Biol. 15(1), (2015).

    7. Cho, S.H., Kang, K., Lee, S.H., et al. OsWOX3A is involved in negative feedback regulation of the gibberellic acid biosynthetic pathway in rice (Oryza sativa). J. Exp. Bot. erv559, 1-11 (2016).