PMID- 15839575
OWN - NLM
STAT- MEDLINE
DCOM- 20050715
LR  - 20190917
IS  - 0730-7268 (Print)
IS  - 0730-7268 (Linking)
VI  - 24
IP  - 4
DP  - 2005 Apr
TI  - Influence of nutrient amendments on the phytoextraction of weathered 
      2,2-bis(p-chlorophenyl)-1,1-dichloroethylene by cucurbits.
PG  - 987-94
AB  - Field experiments were conducted to determine the impact of nutrient amendments 
      on the phytoextraction of weathered 2,2-bis(p-chlorophenyl)-1,1-dichloroethylene 
      (p,p '-DDE) by eight cultivars of cucurbits over a single growing season. Four 
      cultivars of Cucurbita pepo ssp pepo are accumulators and extract percent level 
      quantities of persistent organic pollutants (POPs), whereas C. pepo ssp ovifera 
      and Cucumis sativus are nonaccumulators. The nonamended accumulators 
      phytoextracted 1.0% of the p,p'-DDE and had a translocation factor of 0.44; 
      however, the nonaccumulators removed 0.16% of the contaminant and had a 
      translocation factor value of 0.09. The accumulators also had 3.8 times greater 
      inorganic element content than the nonaccumulators. Duplicate mounds of each 
      cultivar also received weekly nutrient amendments of phosphorus (400 mg/L 
      K2HPO4), nitrogen (200 mg/L KNO3), or nitrogen/phosphorus (400 mg/L K2HPO4, 200 
      mg/L KNO3); a minus phosphorus treatment involved a 1-L addition of 1 g/L AlSO4 
      to the soil before planting. When normalized to respective control values 
      (unamended vegetation), the root and stem p,p'-DDE bioconcentration factors (BCF) 
      of the accumulator cultivars were significantly greater than those of the 
      nonaccumulator cultivars under most nutrient regimes. The biomass of accumulator 
      cultivars decreased by up to 61% under certain nutrient regimes, resulting in 
      mixed effects on the amount of p,p'-DDE extracted. Treatment with N and P 
      increased nonaccumulator biomass by 40 to 100%, and increased p,p'-DDE extraction 
      from soil by 75%. Although generally assumed that fertilizer amendments will 
      enhance phytoremediation, as evidenced here by the nonaccumulators, additions of 
      macronutrients may reduce the phytoextraction of weathered POPs by C. pepo ssp 
      pepo. These findings support our hypothesis that the ability of C. pepo ssp pepo 
      to remove sequestered organic contaminants is governed by unique 
      nutrient-acquisition mechanisms.
FAU - White, Jason C
AU  - White JC
AD  - Department of Soil and Water, Connecticut Agricultural Experiment Station, New 
      Haven, Connecticut 06504, USA. jason.white@po.state.ct.us
FAU - Parrish, Zakia D
AU  - Parrish ZD
FAU - Isleyen, Mehmet
AU  - Isleyen M
FAU - Gent, Martin P N
AU  - Gent MP
FAU - Iannucci-Berger, William
AU  - Iannucci-Berger W
FAU - Eitzer, Brian D
AU  - Eitzer BD
FAU - Mattina, Maryjane Incorvia
AU  - Mattina MI
LA  - eng
PT  - Comparative Study
PT  - Journal Article
PT  - Research Support, U.S. Gov't, Non-P.H.S.
PL  - United States
TA  - Environ Toxicol Chem
JT  - Environmental toxicology and chemistry
JID - 8308958
RN  - 0 (Alum Compounds)
RN  - 0 (Fertilizers)
RN  - 0 (Inorganic Chemicals)
RN  - 0 (Organic Chemicals)
RN  - 0 (Soil)
RN  - 27YLU75U4W (Phosphorus)
RN  - 34S289N54E (aluminum sulfate)
RN  - 4M7FS82U08 (Dichlorodiphenyl Dichloroethylene)
RN  - N762921K75 (Nitrogen)
SB  - IM
MH  - Alum Compounds/pharmacology
MH  - Biomass
MH  - Cucumis sativus/chemistry/drug effects/growth & development
MH  - Cucurbita/chemistry/*drug effects/growth & development
MH  - Dichlorodiphenyl Dichloroethylene/*analysis/metabolism
MH  - Fertilizers
MH  - Inorganic Chemicals/analysis
MH  - Nitrogen/analysis/*pharmacology
MH  - Organic Chemicals/analysis
MH  - Phosphorus/analysis/*pharmacology
MH  - Plant Roots/chemistry/drug effects
MH  - Plant Stems/chemistry/drug effects
MH  - Seasons
MH  - Soil/analysis
MH  - Tissue Distribution
EDAT- 2005/04/21 09:00
MHDA- 2005/07/16 09:00
CRDT- 2005/04/21 09:00
PHST- 2005/04/21 09:00 [pubmed]
PHST- 2005/07/16 09:00 [medline]
PHST- 2005/04/21 09:00 [entrez]
AID - 10.1897/04-232r.1 [doi]
PST - ppublish
SO  - Environ Toxicol Chem. 2005 Apr;24(4):987-94. doi: 10.1897/04-232r.1.