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Decreased transpiration in poplar trees exposed to 2,4,6‐trinitrotoluene
Author(s) -
Thompson Phillip L.,
Ramer Liz A.,
Guffey Aaron P.,
Schnoor Jerald L.
Publication year - 1998
Publication title -
environmental toxicology and chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.1
H-Index - 171
eISSN - 1552-8618
pISSN - 0730-7268
DOI - 10.1002/etc.5620170519
Subject(s) - transpiration , trinitrotoluene , chlorosis , environmental science , abscission , chemistry , gravimetric analysis , horticulture , environmental chemistry , botany , explosive material , biology , photosynthesis , organic chemistry
This article discusses the effects of various concentrations of the explosive 2,4,6‐trinitrotoluene (TNT) on the transpiration of hybrid poplar trees growing in hydroponic media. Transpiration was measured daily by gravimetric means. The rapid removal of TNT from hydroponic solutions was a result of plant uptake and required a daily dosage of TNT to ensure a relatively constant exposure over time. Transpiration decreased with increasing TNT concentrations ≥5 mg/L. Decreases in transpiration were accompanied by leaf chlorosis and abscission. A comparison between a laboratory study and a pilot‐scale experiment showed good scale‐up potential.