PMID- 31862647 OWN - NLM STAT- MEDLINE DCOM- 20200702 LR - 20200930 IS - 1618-1328 (Electronic) IS - 0176-1617 (Linking) VI - 245 DP - 2020 Feb TI - Factors regulating the differential uptake of persistent organic pollutants in cucurbits and non-cucurbits. PG - 153094 LID - S0176-1617(19)30223-8 [pii] LID - 10.1016/j.jplph.2019.153094 [doi] AB - Contamination with persistent organic pollutants (POPs) has become a worldwide concern owing to their the toxicity to humans and wildlife. Pumpkin, cucumber, and squash (Cucurbitaceae) accumulate POPs in their shoots in concentrations higher than those in non-cucurbits; to elucidate the underlying molecular mechanisms of this accumulation, POP transporters were analyzed in the xylem sap of cucurbits and non-cucurbits. The 17-kDa xylem sap proteins detected in all cucurbits but not in non-cucurbits readily bound polychlorinated biphenyl (PCB) in all tested cucurbits, except in cucumber and loofah, and to dieldrin in all tested cucurbits. Ten genes encoding major latex-like proteins (MLPs) responsible for the accumulation of PCBs in zucchini plants were cloned from cucurbits. Phylogenetic analysis using MLP sequences identified two separate clades, one containing Cucurbitaceae MLPs and the other containing those of non-cucurbit members. Recombinant MLPs bound PCB and dieldrin. Western blotting with anti-MLP antibodies identified translocatable and non-translocatable MLPs between root and stem xylem vessels. Translocation of MLPs from the root to stem xylem vessels and POP-binding ability of MLPs are important for selective accumulation of MLPs in cucurbits. This study provides basic knowledge about phytoremediation through overexpression of MLP genes and for breeding cucurbits that accumulate less contaminants. CI - Copyright (c) 2019 Elsevier GmbH. All rights reserved. FAU - Iwabuchi, Aya AU - Iwabuchi A AD - Graduate School of Agricultural Science, Kobe University, 1-1 Rokkodaicho, Nada-ku, Kobe, Hyogo 657-8501, Japan. FAU - Katte, Nonoka AU - Katte N AD - Faculty of Agriculture, Kobe University, 1-1 Rokkodaicho, Nada-ku, Kobe, Hyogo 657-8501, Japan. FAU - Suwa, Mizuki AU - Suwa M AD - Graduate School of Agricultural Science, Kobe University, 1-1 Rokkodaicho, Nada-ku, Kobe, Hyogo 657-8501, Japan. FAU - Goto, Junya AU - Goto J AD - Graduate School of Agricultural Science, Kobe University, 1-1 Rokkodaicho, Nada-ku, Kobe, Hyogo 657-8501, Japan. FAU - Inui, Hideyuki AU - Inui H AD - Graduate School of Agricultural Science, Kobe University, 1-1 Rokkodaicho, Nada-ku, Kobe, Hyogo 657-8501, Japan; Biosignal Research Center, Kobe University, 1-1 Rokkodaicho, Nada-ku, Kobe, Hyogo 657-8501, Japan. Electronic address: hinui@kobe-u.ac.jp. LA - eng PT - Journal Article DEP - 20191211 PL - Germany TA - J Plant Physiol JT - Journal of plant physiology JID - 9882059 RN - 0 (Environmental Pollutants) RN - 0 (Plant Proteins) RN - 0 (Soil Pollutants) RN - DFC2HB4I0K (Polychlorinated Biphenyls) SB - IM MH - Biodegradation, Environmental MH - Biological Transport/genetics/physiology MH - Cucurbitaceae/*metabolism MH - Environmental Pollutants/chemistry/metabolism MH - Gene Expression/genetics MH - Phylogeny MH - Plant Proteins/genetics/isolation & purification/*metabolism MH - Plant Roots/metabolism MH - Plants, Genetically Modified MH - Polychlorinated Biphenyls/metabolism MH - Protein Binding/genetics MH - Soil Pollutants/chemistry/*metabolism MH - Xylem/metabolism OTO - NOTNLM OT - Crop contamination OT - Cucurbitaceae OT - Major latex-like protein OT - Persistent organic pollutant OT - Polychlorinated biphenyl OT - Xylem sap protein COIS- Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. EDAT- 2019/12/22 06:00 MHDA- 2020/07/03 06:00 CRDT- 2019/12/22 06:00 PHST- 2019/08/25 00:00 [received] PHST- 2019/11/08 00:00 [revised] PHST- 2019/12/03 00:00 [accepted] PHST- 2019/12/22 06:00 [pubmed] PHST- 2020/07/03 06:00 [medline] PHST- 2019/12/22 06:00 [entrez] AID - S0176-1617(19)30223-8 [pii] AID - 10.1016/j.jplph.2019.153094 [doi] PST - ppublish SO - J Plant Physiol. 2020 Feb;245:153094. doi: 10.1016/j.jplph.2019.153094. Epub 2019 Dec 11.