Major latex-like proteins show pH dependency in their binding to hydrophobic organic pollutants

The Cucurbitaceae family accumulates hydrophobic organic pollutants in its aerial parts at high concentrations. Major latex-like proteins (MLPs) were identified in zucchini (Cucurbita pepo) as a transporting factor for hydrophobic organic pollutants. MLPs bind to hydrophobic organic pollutants in th...

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Bibliographic Details
Published in:Journal of Pesticide Science 2023-08, Vol.48 (3), p.71-77
Main Authors: Fujita, Kentaro, Sonoda, Chihiro, Chujo, Maho, Inui, Hideyuki
Format: Article
Language:eng ; jpn
Subjects:
Binding
Cucurbita pepo
Hydrophobicity
Latex
pH
Pollutants
Proteins
Xylem
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Summary:The Cucurbitaceae family accumulates hydrophobic organic pollutants in its aerial parts at high concentrations. Major latex-like proteins (MLPs) were identified in zucchini (Cucurbita pepo) as a transporting factor for hydrophobic organic pollutants. MLPs bind to hydrophobic organic pollutants in the roots, are secreted to xylem vessels as complexes, and are transported to the aerial parts. However, the suitable conditions for binding MLPs to hydrophobic organic pollutants remain elusive. In the present study, we show that MLPs bind to the hydrophobic organic pollutant pyrene with higher affinity under acidic conditions. Our results demonstrated that pH regulates the binding of MLPs to hydrophobic organic pollutants.
ISSN:1348-589X
1349-0923
DOI:10.1584/jpestics.D23-014